AU491663B2 - Sorting device - Google Patents

Description

16.96774 The invention relates to a device for the assorted for collection of sheets, comprisinlg a numiber of bins, means whereby transporting the sheets to be assorted along a track, the bins are situated along this track, and guide comnponents movement of which can selectively be brought into the track of sheet into the sheets to be assorted, in order to transport a the pertaining bin. Such a device is known from the U.S.A. patent

specification 3,467,371. In this known device the guide compon- which have been ents are formed by mainly small triangular plates when the shaft fixed on a shaft rotatable between -two positions. protrude is in the position whereby the small trianguilar plates this with one point into the track of movement of the sheets, into the causes the sheet to be guided off and to be transported bin by means of a roll. in order that the transport of the take place in sheets from the track of movement to the bins will and the a reliable way, it is necessary that the guide canponents More- bins are precisely positioned with regard to each other. the per- over, the construction of the guide ccemponents and of rather taining rolls is rather complicated, which results into difficult assembly. In one broad form the invention comprises a device

for the collation of sheets, camprising a number of bins, means said for transporting the sheets to be collated along a track, which bins being situated along this track, and guide camponents the can be brought selectively into the track of movement of bin, sheets in order to transport a sheet into its respective with characterized in that each of a number of bins is provided the bin, one of the guide cmponents which is an integral part of whereby each bin can be moved between two positions, a first

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76.967/74 position in which the guide component protrudes in the track of movement of the sheets, and a second position in which the guide component is situated out of the track of movement of the sheets. Preferably the means for transporting the sheets comprise a suction box in which a pressure below ambient press- ure can be maintained, and a number of mutually parallel endless belts which can move round this suction box, whereby at least in the track parts where bins are situated and at the height of the

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interspaces between the belts openings are made in the under- lying wall or walls of the suction box. of the invention a

sheet reversing device is installed in the track of transport of the sheets at the height of the transition from the rising part into the descending part. Thus it is achieved that

sheets are always deposited in a bin with the same side up- wards, without regard to the fact whether the bin forms part of the first group or of the second group. Generally sorting devices are coupled to copying apparatus, e.g. electrophotographic copying apparatus, whereby copies of the same original can be made quickly and with a defined constant frequency, whereas the changing from one original to another takes a time which lasts longer than the time passing away between the production of two successive copies of the same original. In the sorting device disclosed in the said U.S.P. either every copy of the same original is transported into another bin, or all copies whether or not of the same original are transported into the same bin. Nevertheless in certain circumstances it is desir-

able to collect all copies of the same original in the same bin, but to collect the copies of other originals in other bins. Irl ctk r em~ o jrien+ Therefore of the invention to IId-te the sheets to bel are

introduced in succession into the track of movement.-a d two 6ira MneM9 sberS successive sheets af the same group if a pre- determined short time passes away between the introduction of said sheets into the track of movement, and two successive

76.967 /74 sheets are a member of different groups and form the last respectively the first sheet of said groups if a longer time than said predetermined time passes away between the intro- duction of these sheets into the track of movement, and where- in the above mentioned sorting method can be achieved.

ACLorcJ.I'nq Iq in-thrttmUeans aiA-trovided to select one out of two sorting methods, a first method wherein all sheets of the same group are transported into the same bin and every group of sheets is transported into another bin, and a second method wherein each nth sheet of every group is transported into the nth bin,

the changing from one bin to the next bin in the first sort- ing method being caused by the longer time lapse between the last sheet of the one group and the first sheet of the next group.- In this way it is achieved that the control system

of the sorting device is greatly independent on the copying apparatus coupled to it, whereby the electric connection be- tween both apparatus can be restricted, thereby making pos- sible a more flexible use of the sorting device. other characteristics and advantages of the inven- tion will become clear from the following description, whereby reference is made to the enclosed drawings. In these drawings: Figure I is a front view of the sorting device according to the invention, Figure 2 is a schematic perspective rear view of the sorting device, Figure 3 is a section of a part of the sorting device according to the line III-III in Figure 1,

76.967 /74 Figure 4 is a section of a part of the sorting device according to the line IV-IV in Figure 3, Figure 5 is a view of a suction plate in the trans- port device of the sheets to be assorted, Figure 6 is a side view of a number of bins or

receiving trays and of the suspension of these receiving trays in the sorting device, Figure 7 is an upper view of a cam to be used for commanding the movement of the receiving trays, Figure 8 is a side view of the same cam, Figure 9 is a perspective front view of a part of the suspension construction of the receiving trays, Figure 10 is a view of the suspension of a number of receiving trays, Figure 11 is a side view of a number of receiving

trays having a modified construction of suspension with regard to Figure 6, Figure 12 is an illustration of the electric circuit

for controlling the operation of the stepping motors, Figure 13 is an illustration of the electric circuit of the signal generator of the signal COPIE, Figure 14 is an illustration of the electric circuit of the signal generator of the signals DOORSRT and RESET, Figure 15 is an illustration of the electric circuit of the signal generator of the signal EINDST, Figure 16 is an illustration of the electric circuit

of the signal generator of the signals A and B, Figure 17 is an illustration of the electric circuit

of the signal generator of the signal MMV, Figure 18 is an illustration of the electric circuit

76.967 /74 of the signal generator of the signal PRT, Figure 19 is an illustration of the electric control circuit, Figure 20 is a diagrammatic illustration of the signal values versus time in case of sorting method A,. Figure 21 is a diagrammatic illustration of the signal values versus time in case of sorting method B, Figure 22 is a diagrammatic illustration of the signal values versus time in case of sorting method B com- bined with sorting-up, Figure 23a is a diagrammatic illustration of the signal values versus time in case of sorting method B whereby fifteen copies have been made of the first original, and Figures 23b and c are diagrammatic illustrations of the signal values versus time during resetting of the sorting device. The sorting device according to the invention mainly consists, as represented in the Figures 1 and 2, of a device 10 for transporting the sheets to be assorted, for in- stance copies, two sorting boxes 11 and 12, installed at either side of the transport device 10, in which boxes the receiving trays still to be described are installed, whereby the whole consisting of the transport device 10 and the sort- ing boxes 11 and 12 is sustained by a support 20. This sort- ing device can be used in combination with a copying device, for instance an electrophotographic copying device, as described in the Dutch patent application 72 05491 and 72 14704, but also as loose unit. The support 20 consists of a vertical rectangular profile 21, which rests on an underframe 23 consisting of

76. 967 t74 which swing- three horizontal profiles 24, 25 'and 26, under the upper part wheels 27, 28 and 29 are installed. Against is mounted& of the profile 21 a connection-constructionl 22 which is con~isting for instance of a u-shaped profile 30, and on fixed against the profile 21 with its body plate, by means of weld- which on its open side a plate 100 is fixed of the transport ing, which plate 100 forms part of the frame profile device 10. On the open extremities of the U-shaped plates 31 are installed. 3 and The transport device 10 (see also the Figures plate 100, 4) consists of a frame which is formed by the and 102, in which forms the rear wall, two side walls '101 by means the rear edges of which screw holes 140 are made, with the of which the sidc wallis 101 and 102 are connected formed by a rear wall 100, and a fro'nt plate 103, which is *a the f lange metal plate~, bsn-. in U- shape, which is fixer: against the side walls 101. and 102. To-,'arcls the front thB two plates sir&iwalls 101 anO 1PI z-re lengthened by means of front wall 104 and 105, bent in L;-shape, against which the front wall 106 of the transport device 10 is fixed, in which a covering 106 the operation panel 107 is installed. Further 110 are plate 108, an upper plate 109 and a bottom plate 100 respect- fixed between the front wall and the rear wall ively 1 03. The plates 101, 102, 109 and 110 build up a space shape, and 120 which in cross-section has a parallel piped 103, which is laterally closed off by the plates 100 and 114 are whereby in their corners rolls 111, 112, 113 and znd 103. rotatably installed in bearings in the plates 100 extremity of Further a rope pulley 116 is fixed on the rear

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the shaft 115 of the roll 114 which rope pulley is connected via a rope 117 with a rope pulley 118 which is fixed on the shaft of an electromotor 119 which is placed in the above- mentioned space 120. Round the rolls 111, 112, 113, 114 a number of relatively narrow endless belts 121, for instance- six belts, are arranged which extend on the one part outside of the space 120 and almost over the outside of the plates 101, 109 and 102, and on the other part in the space 120 and along the inner side of the plate 110. As according to a description still to follow an underpressure must be prevalent in the space 120 during the operation of the apparatus, measures have been taken in order that a minimum quantity of air can flow inwards via the con- nection places between the plates by which the space 120 is formed. Thus, as appears from Figure 4, the upper extremity of the plate 101 is bent rectangularly, as well as the left extremity of the plate 109, whereby at the height of the point dowiponent+ of intersection of these two extremities a closing~ergam 122, for instance consisting of a foam rubber strip, is installed.

A closing~rga;5 123 is also installed at the height of the bent right extremity of the plate 109 and the bent upper edge of the plate 102. The lower edges of the plates.101 respect- ively 102 are also bent and further partially extend behind the rolls 114 respectively 113, while the bottom plate 110 has a bent right extremity edge which extends almost as far as the height of the lower edge of the plate 102, so that

between these only a slit is left through which the belts 121 canl pass. In the plates 101, 102 and 109 a number of groove- like openings 124 are made, as represented in Figure 5 for

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76.967 /7 between the plate 102, namely at the height of the interspace on the the belts 121. Further, glide plates 125 are fixed keep the p lates 101, 102 behind the belts, in order to 109 and 102 friction of the belts 121 over the plates 101. as low as possible. 127 Within the space 120 two ventilators 126 and outside of are installed of which the blowing opening ends certain the 'space 120, which ventilators can maintain a air stream underpressure within the space 120, so that an directed inwards takes place via the grooves 124. on each extremity of the shaft 115 of the roll 114 a plate 128 is installed rotatably, which-plates are connected two consoles with each other by means of a plate 129, on which installed in 130 are fixed in which a shaft 131 is rotatably which has a bearings, on the shaft 131 a roll 132 is fixed, at the height number of rope grooves, while in the roll 114 rope grooves of the interspaces between the belts 121 also a number of are formed. Round the two rolls 114 and 132 endless ropes 133 are installed. in the free extremity of at which least one of the plates 128 a screw 134 is installed, that the roll can be screwed against the frame plate 100, so to the 132 can be fixed in different positions with regard roll 114 by rotation round the shaft 115. Further a guide plate 135 is fixed between the and out- frame plates 100 and 103 opposite to the plate 109 as side of the belts 121. The transport device operates follows. When the motor 119 is switched on, the belts 121 114, while as well as the ropes 133, are driven via the roll an under- when the ventilators 126 and 127 are switched on, pressure is created within the space 1.20. When now a sheet,

76.967 t74 such as a copy, is supplied to the transport device, as schematically indicated by the arrow A, this sheet is initially carried onwards by the ropes 133 and is subsequently sucked against the belts 121 by the underpressure which is prevalent within the space 120. The sheet is further carried onwards by the belts 121. and except for some cases which will be explained afterwards, in the description of the operation of the complete sorting device, is bent off at the height of the roll 111 via the plate 135 and is guided over the plate 109. At the height of the roll 112 the sheet comes loose from the belts, because here there is no suction, and the sheet arrives into a reversi.ng device,- which will be described below in a more detailed way. When the sheet leaves the reversing device, it is anew sucked against the belts 121 and is returned downwards over the plate 102 until maximally almost at the height of the lower edge of the plate 102 it is removed from the belts, as will be described further. At either side of the transport device 10 the left sorting box 11 is installed opposite to the plate 101 and the right sorting box 12 opposite to the plate 102. The left sorting box 11 consists of a frame which is built up of two vertical L-shaped profiles 200 and 201 of which -the upper extremities and lower extremities are connected with each other by means of T-shaped profiles 202 respectively 203 which in the embodiment represented are built up of two L- shaped profiles welded against each othe r. in a position vertical on the plane determined by the profiles 200, 201, 202 and 203 two L-shaped profiles 204 and 205 are welded against the T-shaped profile 202 and two L-shaped profiles 206 and 207 against the T-shaped profile 203. The profiles

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76.967 t74 again connected 204 and 206 respectively 205 and 207 are 208 respect- with each. other by vertical L-shaped profiles and/e respectivelyiqn= iLvely 209,. while the profiles 204 horizontal L-shaped and 207 are connected with each other by extremities of the profiles 210 and 211. Against the free a protection plate 212 profiles 204 up to and including 207 bent in U-shape is fixed. in a The frame of the sorting box 11 is connected 22. For that hinging way with the connection construction the flange plates purpose two consoles 213 are fixed against support a hinge pin of the profile 30, which consoles each the profiles 202 and 203 214, while in the rear extremity of pins 214 fit. in holes are made into which the pertaining the frame of the the active position of the 'sorting device closed position, whereby sorting box 11 is in a position, the 200, 201, 202 and 203, the plane, determined by the profiles 101 a locking organ lies in parallel to the plate4461 whereby to lock the sorting (not represented) is installed in order sorting box 11 can be box in this position. in Figure 3 the the elimination turned away clockwise, in order to facilitate sheets. in the sort- of any troubles in the transport of the trays 215 are ing box 11 a numiber of horizontal receiving a horizontal plane installed, which are mainly movable in tray consists of a between two positions. Each receiving 216, a vertical prfie bent in U-shape, with a bottom plate 218. The bottom plate front wall 217 and a vertical rear wall laterally has two 216 has a mainly rectangular shape and the removal of assorted recesses 219 and 220, which facilitate sheets. in the For reinforcement profiles 221 are formed

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76.967 174 on the front- bottom plate which profiles are perpendicular the profiles 221 and rear-wall 217 and 218, while between 222 are made. The and in parallel to these oblong openings purpose of these will be described below. a scraping Against the vertical front wall 217 profile 224, k 223 is fixed, which comprises a U-shaped on the vertical with which the scrapingkerha4, 223 is clamped front wall 217. one of the U-legs of the profile 224 is the full lengthened at the other side of the body piece over a flange 225, and over length of the scrapingkorian 223 with knives 226 are formed at the length of the profile scraping knives mainly consist certain mutual distances, which scraping on the profile in the of small plates formed perpendicularly which one side coincides form of oblique-angled triangles of profile 224. In the case with the body piece of the U-shaped of the scraping knives of the left sorting box the free angle 226 is directed downwards. comporen- scraping Zrgvn 223 a Against each extremity of the for instance in that this small triangular plate 227 is fixed, C~OiPOrleW a whole with the scraping/e*1 n 223, or by plate 227 forms one a scrapingor-g 223 accord- fixing such a plate 227 against the To that side of each small ing to one of the known technics. the scrapingke*g"a 223 plate 227 which is turned away from of which the receiving tray a pin 228 is formed, with the aid with the frame of the sort- can be connected in a hinging way description. ing box, according to below more detailed the receiving Over the vertical rear edge 218 of a clamping a U-shaped profile 229 is fixed-in or, ponenlf- tray tray 215 also the scrapingkerj4a 223 in way, which profile is shorter than the free side of the the embodiment represented. Against

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76. 967 174 profile 229 two triangular consoles 230 are formed in the centre and in the lengthened part of the u-legs of the profile, which consoles face each other and of which the sides directed towards each other are provided with recesses, lying opposite to each other, into which the shaft ends of a small roll 231 can be taken up. This small roll 231 may cooperate with a cam disk, with which the receiving tray 215 can be moved be- tween two positions according to below more detailed description. Near each extremity of the profile 229 and on the side turned away from the receiving tray a console 232 is formed, Vnereby the two consoles 232 of a 'same profile 229 have planes which are directed towards each other. on each

of these planes a pin 233 :Ls formed with which the receiving tray 215 can be connected in a hinging way with the frame of the sorting box 11. In the represented embodiment of the receiving tray 215 the tray itself is made of metal, such as aluminium, while the scraping/eL--4 223 and the profile 229, are manu-

factured of plastic, for Instance by means of injection moulding. However, the tray 215 and the profiles 223 and 229 can also be made completely of metal, but according to an other embodiment the receiving tray 215 and the profiles 223 and 229 are manufactured as one plastic whole, for instance by means of injection moulding. in this case the body pieces of the profiles 223 and 229 form one whole with the vertical edges 217 respectively 2f8. As already said, the receiving trays 215 are pro- vided with oblong grooves 222 which for the various receiving trays 215 in the sorting box are lying above each other.

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76.967 174 Through each pair of grooves 222 lying above each other a rod 280 is inserted, wh1-ich. extends almost over the full height of the sorting box. in principle each rod can be smooth, but as represented in Figure 1 and 6, preferably rods are used which have a saw-toothed edge at the side directed towards the plate 101, whereby the smallest sections coincide each time with the bottom plate 216 of the receiving trays 215. The upper extremities of the rods 280 are connected with each other by means of a rod 281, which freely rests on the profiles 204 and 205, so that the whole consisting of the rods 280 and the rod 281 can easily be displaced into perpendicular direction with regard to the edges 217 and 218. The- lower extremities

of the rods 280 may also be connected with each other by means of a relatively heavy rod 282, so that the rods can be dis- placed less easily. During the operation of the apparatus the rods 280 are adjusted in such a way that the distances between the rods 280 and the front edge 217 are slightly greater than the length of the sheets to be laid down in the receiving trays. By means of the rods 280 it is attained that the leading edges of the sheets laid down in a receiving tray 215 can almost lie in register, and not criss-cross on each other. For suspending the receiving trays in a hinging way in the sorting box the link 240, represented in Figure 9, is used. The link 240 consists of an oblong body piece 241, which is provided with an oblong groove 242, which extends in the lower part of the link. Against the upper extremity of the body piece a bush 243 is formed, which is provided with a central hole 244. Against the lower extremity of the body

piece a troughlike addition 245 is formed, of which the edges

76.967 /74 end almost at the height of the lower extremity of the groove 242, and of which the trough has a semicircular section. From the lower extremity of the bush 243 a flange 246 extends which flange is also connected with the body piece 241 up to the upper extremity of groove 242 and which ends almost at the height of the upper edge of the troughlike addition 245. In the flanges of the profiles 200, 201, 208 and 209, which flanges are perpendicular on the plate 101, a number of holes are made, which lie above each other and at even distances from each other. in these holes pins are installed in a clamping way, for instance solid pins which fit into the holes with a clamp fitting, but preferably tightening pins are used which with a clamp fitting are installed in the holes in the 6f +he pro-files flanges4,200, 201, 208 and 209, whereby the protruding parts of the pins protrude inwards and towards each other near the profiles 200 and 201, and protrude outwards and away from each other near the profiles 208 and 209. on the protruding

parts of each pin a link 240 with the hole 244 is shoven,

whereby the hole 244 shows a slide-fitting with regard to the pin, so that the links 240 can rotate round the pins, whereby the body piece 241 lies against the profile flanges. Further the holes in the flanges of the profiles are made in such a way, that each time four holes lie in a plane. In

the troughlike additions 245 of four links suspended planularly the pins 228 and 233 of a receiving tray are installed, whereby for hooking such a pin into the trough the flange 246 must be bent sidewards. W~hen the flange 246 is released, this arrives into a position above the troughlike addition 245, so that the pins 228 and 233 cannot suddenly come loose from the links 240.,

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in this way fifteen receiving trays are installed in the left sorting box, which are all positioned horizontally and above each other, and whereby the scraping/0*an of each receiving tray lies opposite to the plate 101, and the scrap- ing knives lie opposite to the interspaces between the belts 1.21.. By the oscillating suspension of the receiving trays, and while there are no external forces, all receiving trays will occupy a position of rest, namely the lowest position, which is chosen in such a way, that the points of the scraping knives 226 lie at a distance from the belts. in the space between the plate 212 and the profiles 229 of the receiving trays 215 a vertical shaft 250 is installed, which at its low er side is rotatably mounted in a

cross connection between the profiles 206 and 207 and at its upper side is rotatably mounted in a cross connection between the profiles 208 and 209. The upper side of the shaft 250 is coupled with the drive shaft of an electromotor, for in- stance a step motor. On the shaft 250 a number of cams 251 are shoven, as represented in Figure 7 and 8. Each cam 251 consists of a bush 252 with a central bole 253, with which the cam can be shoven over the shaft 250. On the bush a cam disc 254 is formed, which cam disc has a profile as represented in Figure 7, this means that over half of the circumference no cam disc is present, while from the extremity 255 the cam disc has a diameter which gradually increases over a half of the circumference. on the

upper side of each bush 252 a pin 256 is formed, and-in the

lower side of each bush 252 a cylindrical recess 257 with the same diameter as the pin 256 is formed. The pin 256 and1

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76.967 /74 the recess 257 lie on shaft planes which include an angle of for instance 150. The cams 251 are shoven over the shaft 250 in such a way that each recess 257 of each cam shoves over the pin 256 of the nearest,(aewe cam, so that two

successive cams are turned over the above-mentioned angle of- 150. Thereby the dimensions of the bushes 252 are chosen in such a way, that the cam discs 254 lie opposite to the small rolls 231. However, at the height of the lowest receiving tray no cam is installed, but for instance only a distance bush, as-will become clear afterwards in the description of the operation. The different dimensions are chosen in such a way

that upon a rotation of the shaft 250 into the direction of the arrow B in Figure 3 a cam disc first comes into contact with the pertaining small roll 231 with the part 255 with the smallest diameter. Upon further rotation the cam disc will push against the roll concerned, so that the receiving tray moves into the direction of the plate 101. When part of the cam disc 254 which has the greatest diameter, pushes against the roll 231, the receiving tray will have been displaced so far into the direction of the plate 101, that the points of the scraping knive extend between the belts 121. in Figure 11 an other embodiment of the suspensions of the receiving trays 215 is represented. In this embodi-

ment both the front vertical edge 217 and the rear vertical edge 218 of the receiving tray is at either extremity pro-

vided with a plate 275, on which at its lower side a hori- zontal plane 276 is formed. A roll 277, being freely rotat-

ably installed in each plate 275, is arranged in such a way,

that this can cooperate with the plane 276 of the plate 275

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which belongs to the nearest upper receiving tray. in the

extremities of the vertical rear edge 218 also springs 278 are fixed, of which the other extreiities are connected with the profiles 208 and 209 so that the receiving trays are always pulled to the left in Figure 11. The operation of the transport device 10 together with the left sorting box is as follows. When the sorting run starts, the camn shaft 250 is turned in such a way that

the lowest but one receiving tray 215 is displaced as far as possible into the direction of the plate 101. As already said, the lowest receiving tray cannot be displaced and moreover the tray, as represented in Figure 4, may be firmly installed in the frame. When now via the ropes 133 and the belts 121 a sheet is supplied, this sheet will be loosened from the belts 121 by the points of the scraping knives 226 of the lowest but one receiving tray, which points protrude between the belts 121, and will be guided off in such a way that the sheet will be transported into the lowest receiving tray. If

the following sheet has to be deposited into the lowest but one tray, the shaft 250 is turned over an angle of for in- stance 150, as a result of which the cam disc of the lowest but one receiving tray no more cooperates with the roll of the pertaining receiving tray, which returns to its rest

position, whereby the points of the scraping knives lie at a distance from the belts, while the lowest but two receiving tray is now displaced as far as possible into the direction of the plate 101 by its cam, so that the points of the scrap- ing knives 226 protrude between the belts 121, so that a copy sheet supplied via the transport device 10 is now deposited into the lowest but one tray. if the following sheet has to

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be deposited into the lowest but two receiving tray, the shaft 250 is anew turned over 150, etc. When at a certain moment it is necessary to deposit the following sheet again into the lowest tray, the shaft 250 is turned so far that again the zero position described above is reached, and the run can start once more. As appears from Figure 1, sixteen receiving trays are represented in the left sorting box, whereby the lowest receiving tray is not provided with a scraping while

the upper receiving tray is not active as such, but only serves to make it possible to transport a copy sheet into the highest but one receiving tray. The same applies if receiving

trays according to Figure 11, are used. When more than fifteen sorting trays are necessary, the right sorting box 12 is available for that purpose. The

sorting box 12 only differs in a few details from the sorting box 11, and only these details will be described below where- by for the same parts the same references will be used. The description of the operation of the transport device 10 already mentioned, that when a sheet arrives at the height of the roll 112, it is further transported to a sheet reversing device. This is necessary because otherwise the sheet would be laid down with the wrong side upwards into the receiving trays of the sorting box 12. The sheet reversing device 260 consists of a guide 1--261, mounted under an angle of for instance 500 with regard to the horizontal, for instance a thin metal plate or Corn Poner1T- a grate. This guide"esaft 261 is fixed against the profile

202 of the sorting box 12, and further rests on the upper plate 262 of the sorting box 12. The dimensions of the plate

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are greater than the greatest dimensions of a sheet to be assorted. The operation of the reversing device 260 is as follows. When a copy sheet has arrived at the height of the roll 112, it cannot follow the rather sharp bend which the belts make at this place, and it will be further transported almost horizontally, until its leading edge pushes against Comiporient the guidefke~gaii 261. Here this leading edge will be guided upwards, and the sheet will be pushed further upwards along ccmponient the guide/Qg. This is continued, until the rear edge also comes loose from the roll 112, whereby as a result of the speed and the gravity the sheet is brought slightly further COrnPOrieAit on the guide/lew_9ea, and will fully rest on this. Subsequent- ComnOenlt ly the sheet glides downwards along the guide jGraft 261, until the edge which has be en trailing so far, is sucked on through the openings in the plate 102 and against the belts 121 and is now taken along by the belts, whereby the further transport is identical to the transport along the plate 101. An other constructive difference between the left and right sorting box lies in the installation of the scrap- ing organs which indeed are identical for the two sorting boxes but which in the right sorting box have their points directed upwards, as represented in Figure 10. This has for consequence that when a receiving tray has been fully dis- placed into the direction of the plate 102, the sheets are deposited into this tray, and not in the nearest lower tray, as in the left sorting box. Further the upper receiving tray

fails in the right sorting box, while in the embodiment re- presented the lowest receiving tray is fixed in a position whereby the scraping knives protrude between the transport belts 121, so that all sheets which have not been deposited

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76.9671l74 Into one of the preceding trays, are collected here. on the operation panel 107 four switches 181, 182, 183 and 184 are provided, the uppermost switch 181 being the main switch of the sorting device. In this sorting device the sheets can be sorted according to two systems or sorting methods whereas an addi- tional feature~ is formed by the so-called sorting-up. According to the first sorting method, called method A, each copy of the same original is transported into the same bin, i.e. each copy of the first original into the first bin, each copy of the second original into the second bin, etc. consequently the cam shaft only has to be turned over an angle of 150 so as to bring the next bin in the receiving position, if in the disclosed embodiment the original is ex- changed. The sorting device operates according to this method A if switch 182 has been actuated. According to the second sorting method, called method B, the copies of one original are distributed over 1 the first bins of the sorting device, whereas the "n copies of each following original are likewise distributed over the same first 'In"bins of the sorting device, and this method is maintained until the switch 184 is actuated. Con-

sequently in the embodiment represented the cam shaft has to be turned over an angle of 15 0 after each copy, and has to return to its starting position after copy "nn. The sorting device operates according to this method B if switch 183 has been actuated. upon transporting the copies of the first set of originals according to method A or B, for instance into the first "n"U bins, it is possible to sorting-up by actuating

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switch 184, %,hereby the bin is used as first bin for

the following copies. This method is especially useful if

for instance copies of a first set of originals are sorted in accordance with method B, and the copies of a second set of originals has to be sorted in accordance with the same method, because it is not necessary to remove from the bins the copies of the first set of originals, which are already sorted. In the following description of the control system device of the sorting device, it is assumed that the sorting and has thirty bins, i.e. fifteen in the left sorting box is fifteen in the right sorting box. Further each cam shaft of this assumed to be driven by a stepping motor. The shaft step. stepping motor is turned over an angle of 15 0 by each This stepping motor is of the type having six rotor and eight stator stator windings, each pair of diametrically opposed windings being connected in series. When the stator windings rotor are consecutively actuated in the right sequence, the will turn over an angle of 150 at each actuating impulse. wind- Therefore it is necessary to actuate each pair of stator ings separately and in the right sequence. In case of two sorting boxes it is undesirable that stepping motors are actuated at the same time. In a both two sorting device having two sorting boxes and therefore eight stepping motors, it is therefore necessary that the pairs of stator windings are actuated at the right moment windings and in the right sequence, i.e. each pair of stator wind- has its own actuation circuit. in Figure 12 the stator 301B, ings of the left stepping motor are designated 301A, 301C and 301D respectively, and those of the right stepping

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76.967/74 motor 302A, 302B, 302C and 302D respectively- for in- one terminal of each winding is connected

stance to the terminal 40V of a DCpotential source, where- is connected to an as the other terminal of each winding that a winding has to be activating circuit, which, in case of the other terminal energized, accomplishes the connection OV of the DC-source. of said winding to the terminal a first transistor Each activating circuit comprises is of the npn-type, 303, which In the described embodiment to the terminal OV and the emitter of which being connected the respective winding 303. the collector to the terminal of 303 is via a resistor 304 or 302. The base of the transistor second transistor 305, the connected to the collector of a being connected to the emitter of said second transistor and the base of said terminal +5V of a DCpotential source, being connected via a re- second transistor on the one side,* on the other side via a sistor 306 to the terminal +5V and control device or converter *resistor 307 to the output of a 308. is connected to in this way each activating circuit 308. As will be described another output of the converter signal of the converter is later,* each output potential or or if no winding has high, i.e. is +SV, in the rest position hereafter will be designed to be energized, wich situation signals of the converter by indicating that each of the output 301A, 301B, 301C, 301D, 302A, is one. In this way the windings are connected to the outputs 302B, 302C and 302D respectively of the converter 308. A, B, C, D, E, F, G and H respectively winding 301A If one of the windings, for instance of the relevant output has to be energized, the signal level

24 2491.SSS

76.967 174

output 308A, must be- of the converter, in this case of the output will become 0 V. comne zero, i.e. the voltage in this in more detail How and when this happens will be described circuit will hereinafter. The operation of the activating 301A, but the same be described with relation to the winding applies for the other windings. 308 becomes zero As the output 308A of the converter 305A, which was the potential of the base of the transistor lower value, so that the originally +5v, will decrease to a whereupon the poten- transistor 305A will become conductive, which was initially tial of the base of the transistor 303A, the transistor zero, will increase until a value, whereby winding 301A is connect- 303A becomes conductive, whereby the and thus will be ed to the terminal 0 V of the DC-source, motor over one step energized, thereby turning the stepping or 150 different The task of the control circuit of the SM indicating activating circuits is to combine a signal to be energized and a which one of the stepping motors has the energizing of signal SM-PULS which is responsible for this combination into a this stepping motor, and to convert the converter 308. signal zero in one of the outputs of converter Therefore the control circuit, the cited and eight outputs, 308 being a part of which, has two inputs 30811 of the con- i.e. the outputs 308A up to and including input 309 is con- verter 308. one of the inputs, i.e. the SM, which signal nected to a signal generator of the signal to be used, and is is "zero" if the left stepping motor has to be-used. The other "one" if the right stepping motor has of the signal input 310 is connected to a signal generator

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76. 967 /74 SM-PULS, which signal is changing from "one" to "zero", every The time a winding of a stepping motor has to be energized. signal generators of the signals SM and SM-PULS will be described in more detail in the following description. The control circuit comprises the converter 308, a-

counter 311 and a monostable multivibrator 312. In the dis- formed closed embodiment this monostable multivibrator 312 is for by an integrated circuit of the type TTL-74123 as sold instance by Texas Instruments, the pulse width of which can which be controlled by choosing the appropriate RC-values, The may be connected externally to the integrated circuit. via a pins 2 and 3 of the integrated circuit are connected the resistor to the terminal +5V of the DC-source, whereas the pins 14, 15 and 16 are connected to a RC-circuit defining or if the width of the pulse generated in the output e- pin 4,

signal in the pin 1 changes from one to zero. The pin 1 cor- to the responds to the input 312A and this one is connected so that each time the signal SM-PULS is changing input 310, to from one to zero, the signal in the pin 4 corresponding width be- the output 312B becomes temporarily zero, the pulse ing defined by the external RC-circuit. The counter 311 of the disclosed embodiment is

formed by an integrated circuit TTL-7473 as sold by Texas

Instruments, the pins 12 and 5 of which being interconnected,

so as to form a digital ring counter having four bits, cor-

responding to the number of pairs of windings of each stepping motor.

In fact the counter 311 is formed by two JK-flipflops

with forced input, the Qi-input of the first JK-flipflop being connected to the T-input of the second JK-flipflop. Further

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76. 967 174

the J, K and S-inputs of each JK-flipf lop are connected via a resistor to the terminal +5V of the DC-source, so that a signal is present in those inputs. in this way it is

achieved that every time the signal in the T-input of the first flipf lop is changing from one to zero, the signal in the output 01 is inverted (the Q2-output is not used). If the signal 01 was originally one, it becomes zero, whereby the signal in the T-input of the second flipf lop is changed from one to zero, thereby inverting the output signal 03. (The Q4-output is not used). The T-iLnput of the first flip-

flop corresponds to the input 311A, whereas the outputs 01 and Q3 correspond to the outputs 311B and 311C respectively. The input 311A is connected to the input 310, which is con- nected to the signal generator of the signal SM-PULS. Starting from the situation that the output signals 311B and 311C are one, the following situations are obtained subsequently, each time the input signal 311A is changing from one to zero, wherein 'In"is the number indicating the times that the input signal 311A has been changed from one to zero. n 311B 311C 0 one+ one 1 zero zero

2 one zero

3 zero one 4 one one

It must be noted that the changing from zero to one of the input signal 311A has no influence on the output signals 311B and 311C. in the disclosed embodiment the converter 308 is

27 491663

76. 967 174 formed by an integrated circuit TTL-7442 as sold by Texas which Instruments, which is in fact a BCD-to-decimal decoder is used here in a special way. The converter 7442 has four inputs, corresponding to the pins 15, 14, 13 and 12 respectively and eight outputs pins QO, Ql, Q2, Q3, Q4, Q5, Q6 and Q7 corresponding to the 1, 2, 3, 4, 5, 6, 7 and 9 respectively. In the disclosed to the inputs circuit the inputs 11 12' 14 and 18 correspond the outputs 308N, 308M, 308K and 308L respectively, whereas 308A up Q0 up to and including Q7 correspond to the outputs to and including 308H respectively. converter is as follows: The function table of the L K M 0 A B C D E F G H

L B H H H H H H L L L L H L H H B H H H L L L H R L H H H H H L L H L H H H L H H H H L L H H

H1 L L H H H H L H H H L EE H H L H H L R L H LB L B H H L B

L H H H H H H HERE H L

H H R H H7 H H H H

As already mentioned, the outputs 308A up to and of including 308H are connected to the respective windings zero, the stepping motors, and if one output signal becomes energized. The input 308L is the corresponding winding is of the monostable multivibrator connected to the output 312B from the function table no one 312, and as it becomes clear

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76.967 /74 of-the outputs 30aA up to and including 308H can become zero as long as the output of the monostable multivibrator 312 is one, i.e. as long as the signal SM-PtJLS in the input 310 is not changing from one to zero. As soon as the signal 514-PULS is changing from one to zero, the output 312B becomes terrpor arily zero, and one of the outputs 308A up to and including 308H1 may become zero dependent on the other input signals 308K, 308F4 and 308N. The input 308K is connected to the input 309 which is connected to the signal generator of the signal SM, which signal being zero if the left stepping motor has to be used; and being one if the right stepping motor has to be used. Prom the function table it becomes clear that if the input signal 308L is zero and the input signal 308K Is zero, only the output signals 30aA up to and including 308D can become zero, and therefore only the windings of the left stepping motor can be energized, whereas if the input signal 308L is zero and the input signal 308K is one, only the output signals 308E up to and including 30811 can become zero, and therefore only the windings of the right stepping motor can be energized. Which one of the windings of the groups 30aA up to and including 308D or 308E up to and including 30811 is energized is dependent on the input signals 30814 and 308N, which are connected to the outputs 311B and 311C respectively of the counter 311. if the function tables of the converter 308 and of the counter 311 are combined, it becomes clear that when the signal SM is zero and therefore also the input signal 308K, and when the signal SM-PULS is for the first time changed from one to zero, the output signal 30aA becomes zero. At

29 2491663

76. 967 t7 one to zero, the second changing of the signal SM-PULS from same~ is true the output signal 308B becomes zero etc. The SM is one. it for the right stepping motor if the signal the input 309 must be noted that in the connection between device 313, and the input 308K there is provided a delaying of the signals such as a RC-circuit, whereby the changings the input 308K. SM are transmitted with some retardation to Hereafter it will be described how the different control circuit, signals, that are important for the specific are generated and which meaning they have. On the profile 203 there is provided a light of the source, see Figure 4, whereas against the anderside 291 which is profile 202 there is provided a photoresistor 225 of the influenced by the light source 290. The flanges 3, so that bins are provided with recesses 292, see Figure and the photo- the light path between the light source 290 whatever being resistor 291 is not interrupted by the bins, the position of the latter. and The light path between the light source 290 a copy which is the photoresistor 291 can be interrupted by sorting box. transported into one of the bins of the left sorting box, The same construction is repeated in the right and a photo- wherein there are provided a light source 293 being resistor 294, the light path between said elements into one of the interrupted only wOhen a copy is transported photoresistors bins of the right sorting box. Each of the 321 and 322 291 and 294 is connected in series to a resistor between zero respectively, thus forming a potential divider of the base of and 5V (see Figure 13), whereby the potential The a transistor 323 and 324 respectively is controlled.

4iaa a

76. 967 174

transistors 323 and 324 are of the npn-type and their CIx-0or5 ttsareconnected to the terminal +5V of a Dc-source. if a copy sheet has to be transported into one of the bins of the left sorting box, this copy sheet will light source interrupt temporarily the light path between the the resist- 290 and the photoresistor 291, thereby increasing of the ance of the photoresistor 291 and also the potential con- base of the transistor 323 so that the latter becomes into ductive. As soon as the copy sheet is fully transported again the the bin, the beam from light source 290 reaches of the photoresistor 291,- thereby decreasing the resistance transistor, latter and also the potential of the base of the again. The so that the transistor 323 becomes non conductive a bin of the same is true if a copy sheet is transported into the right sorting box, the beam of light normally activating conduct- photoresistor 294 being interrupted, thereby making ive the transistor 324 for the time of the interruption. as The signal emitted by the transistor 323 as well as input the signal emitted by the transistor 324 are used The signals of a Schmitt-trigger 325 with inverted output. one each input of the schmitt-trigger becomes temp~orarily in time a copy is transported into one of the bins, either and this the left sorting box, or in the right sorting box,* inverted signal is inverted by the Schmitt-trigger into an pulse having straight sides. The output of the Schmitt-

trigger 325 is connected to the input of a gate 326 having one input, whereby the signal is again inverted. Therefore 326 in the rest position the output signal of the inverter one of is zero, whereas each time a copy is transported into the bins, the output of the inverter 326 becomes temporarily

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76.967 /74 one (positive pulse with rectangular sides). The output of

the inverter 326 corresponds to the signalk~eci'. Via a resistor 327 the output of the Schmitt-trigger 325 is also connected to the base of a-transistor 328, which resistor 327 via a capacitor 329 is also connected to the terminal +5V of the DC-source. The collector of the trans-

istor 328 is also connected to the terminal +5V, whereas the emitter is connected to a circuit, which will not be described in more detail, but which, if the transistor 328 becomes non conductive, switches off the copying apparatus coupled to the sorting device. In the rest position, i.e. if no copies are trans- ported into the bins both electrodes of the capacitor 329 have a potential of +5V. Consequently the transistor 328 is con- ductive. Normally the pulse width of the output of the Schmitt-trigger 325 is so narrow that the RC-circuit formed-

by the resistor 327 and the capacitor 329 has no function. However, if a copy sheet interrupts the light path between the light sources 290 or 293 and one of the photoresistors 291 or 294 during a longer time, because it is jammned, the potential of the output of the Schmitt-trigger 325 is zero during a longer time, whereby the capacitor 329 will be charged via the resistor 327 and therefore the potential of the base of the transistor 328 decreases and the transistor becomes non conductive. By this the further transport of sheets to the sorting device is interrupted, e.g. by switch- ing of f the copying apparatus coupled to the sorting device. The signals DOORSRT (sorting-up) and RESET are generated both by actuating switch 184, the first signal by actuating shortly e.g. no longer than one second, switch 184,

32 349t663

76. 967 t74. the second signal by actuating for a time longer than one second, switch 184. one of the in the rest position open contacts of switch 184 (see Figure 14) is connected to the terminal 0 V of the DC-source, the second contact being con-_ nected to the terminal +5V via a first resistor 331 and a second resistor 332. The input of a Schmitt-trigger 333 is connected to the connection line between the resistors 331 and 332, the output signal of said trigger corresponding to the signal DOORSRT. The output of the Schmitt-trigger 333

is also connected to the input of an inverter 334, the output signal of which therefore corresponds to the signal The operation is as follows: In the rest position the input of the Schmitt-trigger 333 is one, and therefore its output signal is zero. By closing switch 184 the potential of the input is decreased

till zero, thereby generating a positive pulse in the output, the pulse width being dependent on the time that the switch 184 is closed. This pulse is the signal DOORSRT and inverted it is the signal DOORSR1T. The output of the Schmitt-trigger 333 is connected

to a terminal of a capacitor 337 via a resistor 336, the other terminal of which capacitor being connected to the terminal of the DC-source. Besides the output of the Schmitt- trigger is also connected to the base of a transistor 338, the collector of which being connected to the terminal +5V and the emitter to the signal line of the signal RESET. As will be-

come clear from the following description, the signal RESET is only used as inverted signal, and therefore the emitter of the transistor 338 is connected to the input of an inverter 339, the output signal of which corresponds to the signal

33 34916063

76.967 /74 RESET. in the re-st Position the switch 184 is open and that the output signal of the Schmitt-trigger is zero, so 184 is the capacitor 337 is charged. As soon as the switch becomes one, closed, the output signal of the Schmitt-trigger the resistor 336, and the capacitor 337 starts to 1--erha via of the transistor thereby increasing tChe potential of the base the. 338. If the switch 184 is opened again very quickly, capacitor is not enough discharged to make the transistor for a longer 338 conductive. However, if the switch is closed 338 can time, the potential at the base of the transistor conductive, increase sufficiently so that the latter be6comes signal of i e. the emitter signal becomes one, or the output the inverter 339 becomes zero. This is the signal RESET. bins Each cam shaft controlling the movement of the a recess is coupled to a stepping motor and is provided with the cam shaft which in a defined orientation or position of The de- actuates a micro-switch having two change-contacts. in such a way fined position of the left cam shaft is chosen in the sorting that in this position a copy sheet transported left, device will be received by the undermost bin of the to the ex- sorting box, i.e. the lowest but one bin is moved treme right position. In the right sorting box the position to is chosen in such a way that the uppermost bin is moved the extreme left position. The left cam shaft cooperates with a micro-switch COM rAvO 11 the term- 341 having a/kethel contact which is connected to 341A inal 0 V of the DC-source and to two change-contacts 346S and 341B. The contact 341A is connected to the input terminal of a RS-flipf lop 346 via a resistor 342 and to the

34. 3491.663

76.967 174

via a resistor 343. The contact 341B is connected to the input 346R of the flipf lop 346 via a resistor 344 and to the terminal +5V via a resistor 345. The flipflop 346 is in the known manner composed of two NAN~D gates 347 and 348 hav- ing each two inputs, the output of the NAIAD gate 347 being connected to one of the inputs of the NAND gate 348 and vice- versa. The output signal 3460 of the flipflop 346 becomes one if the input signal 346R becomes zero and remains one until the input signal 346S of the flipf lop 346 becoms zero, whereby the output signal 3460 becomes zero. As long as the recess in the cam shaft does not cooperate with the micro-switch 341 the conitact 341B is closed, the input signal 346R of the flipf lop 346 being low or zero, and the input signal 346S being high or one. As soon as the recess in the cam shaft cooperates with the micro- switch 341, i.e. the left cam shaft is in the end position, the input signal 346S of the flipf lop 346 becomes low or zero, whereas the input signal 346R becomes high or one. As long

as the left cam shaft is not in the end position, the output signal 3460 of the flipf lop 346 is one. As soon as the left cam shaft reaches the end position the output signal 3460 of the flipflop 346 becomes zero and remains zero until the left cam shaft leaves the end position. The right cam shaft cooperates with a micro-switch 351 having a mother contact and two change-contacts 351A and 351B, the contact 351B being closed when the recess does not cooperate with the micro-switch 351. Further the micro-switch 351 is in the same way as the micro-switch 341 connected to a RS-flipflop 356 via re- sistors 352, 353, 354 and 355 said flipflop comprising two

4j9 1,66 3

76.967 /74 except that the NAND gates 357, 358 having each two inputs* and the contact contact 351A is connected to the input 356S flipf lop 356. 351B is connected to the input 356R of the the flipf lop 356 This means that the output signal 356Q of in the end position, becomes one when the right cam shaft is is not in the end and becomes zero when the right cam shaft position. to The output 356Q of the flipf lop 356 is connected inputs, the other in- one input of a NAND gate 361 having two of the signal SM. put being connected to the signal generator when the left As already mentioned, the signal SM is zero the right stepping stepping motor is activated,* and one when motor is activated. Therefore the output signal of the NANYD is gate 361 becomes only 2;ero when the right stepping motor the end pos3ition. activated and the right cam shaft is in to The output 346Q of the flipf lop 346 is connected inputs, the other in- one input of a NAIMD gate 362 having two NAND gate 361. The put being connected to the output of the to one terminal of a output of the NAND gate 362 is connected being connected to capacitor 363, the other terminal of which to the terminal a Schmitt-trigger 364 and via a resistor 365 0 V of the DC-source. The operation is as follows: signal Starting from the situation that the output input signal of the NAND gate 362 is one and becomes zero, the negative pulse, of the Schmitt-trigger 364 becomes a sharp the Schmitt-trigger which, has no effect. The output signal of 364 remains one. if the output signal becomes again one the a positive input signal of the Schmitt-trigger 364 becomes into a sharp pulse which is converted by the Schmitt-trigger

4916 63

76.967 174 This signal is the signal EIbNDST- rectangular negative pulse. becomes clear that it is important to Prom the foregoing it gate 362 is changing know when the output signal of the NIAND motor is in operation, from zero to one. If the left stepping the output signal of the the signal SM is zero, and therefore signal 3560 of the NIAND gate 361 is one, whether the output as the left cam shaft flipf lop 356 is zero or one. As long signal 3460 of the. is not in the end position, the output output signal of the flipflop 346 is one, and therefore the shaft reaches the end NAN~D gate 362 is zero. As the left cam the flipf lop 346 becomes position, the output signal 3460 of of the NAN~D gate 362 zero, and therefore the output signal becomes one. the If the right stepping motor becomes operative, clear from the signal SM becomes one, and, as will become cam shaft is not in the following description, since the left be rotated anymore, end position at that moment, and cannot 346 is one. As long as the output signal 3460 of the flipflOp position the output the right cam shaft is not in the end and therefore the out- signal 3560 of the flipf lop 356 is zero and the output signal put signal of the NAND gate 361 is one right cam shaft reaches of the NAND gate 362 is zero. As the becomes one, whereby the end position, the output signal 356Q becomes zero and the the output signal of the NAND gate 361 one. output signal of the NAND gate 362 becomes is only it must be noted that the signal EINDST or the right cam shaft generated at the moment that the left during the time reaches its end position and is not maintained this position. that the respective cam shafts are in 182 (sorting The switches 183 (sorting method B) and

76.967 /74

method A) are mechanically interconnected, in such a way that by actuating switch 183 switch 182 is opened and vice-versa.

The contact 183B of switch 183 (see Figure 16) is connected to the terminal 0 V, whereas the other contact 183C is con- nected to the terminal +5V via resistors 371 and 372 and to a Schmitt-trigger 373 via resistor 371. The contacts of switch

183 are closed if the latter is actuated, i.e. if sorting I '2. method B is chosen, and opened if switchk4 is actuated,. i.e. if sorting method A is chosen. If sorting method A is chosen, the input signal of

the Schmitt-trigger has a potential of +5V or is one, and therefore its output signal is zero, corresponding to the signal B, being identical to the signal A. If sorting method

B is chosen, the contacts of switch 183 are closed and there- fore the potential of the input of the Schmitt-trigger 373 is reduced and becomes the value zero, thereby r-:ndering its out- put signal one, corresponding to the signal 3, being identical A. to the signal The signal B is inverted by means of a NAND gate 374 having one input and the output signal of this gate corresponds to the signal A. The signals A and COPIE are combined to a signal MMV by means of an electric circuit shown in Figure 17. The main component of the generator of the signal MMV is formed by a retriggable monostable multivibrator 376, which in the disclosed embodiment is formed by an integrated circuit of the type TTL 74123 as sold by Texas Instruments. The inputs 376A and B corresponding to the pins 8 and 9 of the integrated circuit are connected to the terminal 0 V of the DC-source, the input 376C corresponding to the pin is connected to the generator of the signal COPIE (see

38 491663

76.967 /74 to the pin 11 to Figure 13) and the input 376D corresponding to sorting method the generator of the signal A corresponding

A (see Figure 16). If.sorting method B is chosen the input signal 376D 376G of the is always zero, so that also the output signal

multivibrator is always zero. 376D If sorting method A is chosen the input signal

is always one, so that every time a signal COPIE is present becomes a rect- in the input 376C, the output signal 376G the in- angular pulse. The external RC-circuit connected to is now chosen puts 376E and F of the monostable multivibrator are repeated with a in such a way, that if the signals COPIE has not been zero sufficient frequency, the output signal 376G as long as at the moment the next signal COPIE appears, i.e. frequency in the signals COPIE are generated with a sufficient one. the input 376C, the output signal 376G remains The external RC-circuit is adapted to the type of and in case of a apparatus feeding the sheets to be sorted the copying rate i.e. the copying apparatus, it is defined by can be produced in number of copies of the same original that

one minute. In case of e.g. a copying apparatus having a every signal COPIE the copying rate of 60 copies/minute, at bit longer than one multivibrator generates a pulse lasting a choosing second. From the foregoing it becomes clear that by is always zero, the sorting method B the output signal 376G output signal 376G whereas by choosing sorting method A, the are transported is one as long as copies of the same original

to the sorting device. The output signal 376G is the signal

MMV. operation The last external signal necessary for the

39 491663

76.967 /74 of the sorting device is the signal PRT, or the inversed signal PRT. The main component of the generator of the signal -is _PRTLi formed by a monostable multivibrator 381 (see Figure 18) which, in the described embodiment is formed by an inte-

grated circuit of the type TTL 74121 as sold by Texas instruments, the inputs 381A and B corresponding to the pins 3 and 4 being connected to the output of the generator of the signal A. The input 381C corresponding to the pin 5 of the integrated circuit is connected to the terminal +5V via a resistor 382, and to the terminal 0 V via the normally closed contacts of the porint swit.ch 386 of the copying apparatus coupled to the sorting device. Therefore the input signal 381C is normally zero. As long as sorting method A is chosen,

the output signal 381D -corresponding to pin 1 of the multi- vibrator is one, wha tever being the input signal 381C. The output 381D is connected to a capacitor 383, Which is also

connected to the input of a Schmitt-trigger 384 having an inverted output and via a resistor 385 to the terminal 0 V. As long as the output signal 381D is one, the output signal of the Schmitt-trigger 384 is also one. If sorting method B is chosen and the print knob of the copying apparatus is actuated, the contacts of the print knob 386 are opened and the input signal 381C becomes one, whereby the output signal 381D temporarily becomes zero (the pulse width is controlled by an external RC-circuit). As soon

as the output signal 381D3 again becomes one, a positive pulse is formed in the input of the Schmitt-trigger, the output signal of which becomes temporarily zero (see also Figure The output signal of the Schmitt-trigger is the signal PRT,

76.967 /74 knob is i.e. the signal is high or one as long as the print if sorting not actuated, and becomes temporarily low or zero The output method B is chosen and the print knob is actuated. of the Schmitt-trigger 384 is connected to an inverter or

NAND gate 387, the output signal of which consequently cor-

responds to the signal PRT. COPIE, The above described generators of the signals and MMV are forming DOORSRT, RESET, PRT or PRT, EIbiDST, B, A control circuit the external signals which are used in the

which will now be described in greater detail. is The control circuit (see Figure 19) actually which can be built up out of a number of signal generators, SMA, SMB, SM-PtJLS, formed by NAND gates as for the signals by flipflops as for TP or TP, f4ST, RGH, RTL, INS, 15ST and BO, oscillator for the signals Q10, SM, Q12, Q13 and TS-, by an Q1, Q3, 05 and Q7, the signal US-, by a counter for the signals Q8 and by a by a memory device for the signals Q2, 04, Q6 and signal gener- comparative circuit for the signal VGL. These ators will now be described. The oscillator 391 is formed by a Schmitt-trigger The input 392b 392 having two inputs and an inverted output. a capa- of the Schmitt-trigger is connected to the earth-via 394, which citor 393, and to the output via a potentiometer Dc-source via output is connected to the terminal +5V of the a resistor 395. As The operation of the oscillator is as follows: 392, long as the input signal 392a of the Schmitt-trigger BO, is zero, which is connected to the generator of the signal one, thereby the output signal of the gate 392 is high or charging the capacitor 393, whereby the input signal 392b

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76.967 /74

becomes high or one.- the output As soon as the signal BO becomes one, thereby discharging the signal of the gate 392 becomes zero, signal 392b becomes zero, capacitor 393, whereupon the input one, whereupon the whereby the output signal becomes again the input signal 392b be- capacitor 393 is charged agrain and potentiometer the pulse comes one again. By adjusting the As soon as the width of the oscillator can be controlled. oscillator is blocked. The signal BO becomes zero again, the oscillator generates the signal oSC. counter- 401 is in the disclosed embodiment the the typb TTL 7493 as sold formed by an integrated circuit of is actually composed of by Texas Inst.-umfents, which circuit being connected to four T-flipflops, the Ql-output thereof is formed having the T2-input, whereby a binary counter sixteen positions. Since the T-Input is an inverted input, the counter

reacts on the descending edge of a pulse. The counter can be inputs S2 and S4 which are actuated and reset by means of the As long as the interconnected in the disclosed embodiment. counter 401 is able to input signals S2 and S4 are zero, the signals S2 and S4 be- count pulses, but as soon as the input blocked until these input come one, the counter is reset and signals become zero again. The function table is as follows:

76.967 /74

Pulse N~o. Q a 0 0 0 0 0 1 0 0 0 1 0 10 0 2 3 110 0

4 0 0

8 0 0 01

12 0 0 11

13 1 0 11

14 0 1 11

1 1 11 generator The input s S2 and S4 are connected to the to the of the signal RTL, whereas the input Ti is connected generator of the signal TP. 402 in the disclosed embodiment the memory device type TTL 7475 as is formed by an integrated circuit of the com~posed of four sold by Texas instruments, which circuit is connected to flipflops, the inputs Dl, D2, D3 and D4 being of the counter. the outputs Qi, Q3, 05 and Q7 respectively The inputs Ti and T2 of the trigger are connected to the generator of the signal RGH. The operation is such that as long as the input output Q2n+1 of signals Ti and T2 are one, the signal in the output signal O~n the memory 402 corresponds to the inverted also after of the counter. This information remains present, and the outputs the output signals Ti and T2 have become zero, the information of Q2n+l of the memory device 402 adapt again signals Ti and the counter 401, at the moment that the input

43 491.663

76.967 /74 if at that moment the counter is reset, T2.become one again. then the memory device is also reset. circuit In the disclosed embodiment the comparative OR 405, 406 and 403 is formed by four exclusive 49F gates 404, 405a, 406a and- 407, having each two inputs, the inputs 404a, being 407a of the gates 404, 405, 406 and 407 respectively respectively of connected to the outputs Q1, Q3, 05 and 07 406b, and 407b. to the counter 401 and the inputs 404b, 405b, of the memory the outputs Q2, Q4, Q6 and Q8 respectively 407 device 402. The outputs of the gates 404, 405, 406 and of a NAND) gate 408. The out- are connected to the four inputs OR if the two input put signal of each exclusive o? gate is one is one and the signals are diffc-ent, i.e. one input signal are equal, other zero, and zero if the two input signals either both one or both zero. 408 is Because the output signal of the NAND) gate its output signal only zero if the four input signals are one, Q3, 05 and 07 becomes only zero if the output signals Ql, 02, Q4, 06 and respectively correspond to the output signals Q8 respectively. In each other situation the output signal of the NAN) of tha NAND gate 408 is one. The output signal gate 408 corresponds to the signal VGL. The outputs Q1, Q3, 05 and 07 of the counter 401 NAN]) gate 409 are connected respectively to the inputs of a NAN]) gate 409 having four inputs. The output signal of the 401 cor- is one as long as the output signals of the counter zero as soon respond to a number under fifteen, and becomes one, i.e. the as each output signal Ql, 03, 05 and 07 becomes signal of the binary number fifteen is formed. The output NAN]) gate 409 corresponds to the signal 15 ST.

44 4491.63

76.967 /74

The outputs Q3, Q5 and Q7 of the counter 401 are gate 410 connected respectively to three inputs of a NAND to the having four inputs, the fourth input being connected left stepping generator of the signal SM. As long as the making the motor is activated the signal SM is zero, thereby output signal of the gate 410 one. However, as soon as the signals 03, right stepping motor is activated and the output number 14, the and Q7 of the counter 401 form the binary The output signal output signal of the gate 410 becomes zero. 4T. of the gate 410 corresponds to the signal The three inputs of a NAND gate 411 are connected generator of the to the generator of the signal T-S, to the A respectively. signal NM' and to the generator of the signal zero if all The output signal of the NAND gate 411 is only A has been its input signals are one, i.e. if sorting method as long-as selected and the signal MM'? is one, which happens and these copies are transported into the sorting device, The output copies are not transported into the last bin. signal SMA. signal of the HAND gate 411 corresponds to the The three inputs of a HAND gate 412 are connected generator of the to the generator of the signal COP IE, to the 14S respectively. signal B and to the generator of the signal then zero if The output signal of the HAND gate 412 is only is transported its three input signals are one, i.e. if a copy into the sorting device, sorting method B has been selected, the last bin. and the said copy will not be transported into to the The output signal of the HAND gate 412 corresponds signal SMB. The three inputs of a NAND gate 413 are connected the signal SMA, to the output of the NAND gate 411 generating

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76.967 174 SMB to the output of the NAND gate 412 generating the signal signal and to the output of the oscillator generating the US-C respectively. Because AZB, one of the signals SM'A or

'§Fm is one. in case the oscillator is not actuated the signal

050C is also one. The gate 413 then only reacts on the signal -9 IA if sorting method B is selected and only on the signal is SdME if sorting method A is selected. Since the oscillator only operative at a moment that there are no copies trans- SMA ported into the sorting device, and therefore the signals and SMB are both one, the gate 413 only reacts on the signal of the oscillator. The output signal of the gate 413 cor- responds to the signal SM-PULS. The three inputs of a NAND gate 414 are connected to the output of the WAND gate 413 generating the signal SM- PilLS, to the output of the NAND) gate 409 generating the signal and to the output Q12 of a flipf lop 423 respectively. if The signal SM-PULS is only inverted by the XAM] gate 414 the two other input signals are one, i.e. the signal SM-PULS is blocked if the counter 401 has reached the number fifteen or if the signal PRT has not been followed by a signal EINDST. The output signal of the gate 414 corresponds to the signal TP. The output of the gate 414 is connected to the input of an inverter 415, the output signal of which corresponds to the signal TP, which signal is used as input signal of the counter 401. The RS flipflops used are of the type composed of two NAND) gates, having each at least two inputs, one of these inputs of the first gate being connected to the output of the second gate and vice versa. With this type of flipflops the

input signals of the two NAN]) gates may not be zero at the

46 491.66

76.967 174 contained in one same time, since otherwise the information output signals become of the outputs gets lost, because both signals of the flipflops one. In the rest position the input are normally one. of two NAND In case such a flipflop is compgosed signal of the first gates having each two inputs, the output signal of the second N~AND gate will become one and the output of the free input of the NANID gate zero, if the input signal and this situation will first NAND gate is temporarily zero, of the free input of the be maintained until the input signal the reversed situa- second NqAND gate becomes zero, whereupon has or both NAND gates tion occurs. In case one NAN~D gate output signal of the one have more than one free input, the its free input signals NAND gate will become one, if one of of the free input signals become zero, and again zero, if one of the other NAND gate becomes zero. RS flipflops in the control circuit there are five formed by two NsAND gates of this type. The flipf lop 416 is The input 417a of the 417 and 418 having each two inputs. output of a NAND gate 419 NAND gate 417 is connected to the to the generator of the the input 419a of which is connected motor is signal SM This signal is zero if the left stepping motor is activated. activated and one if the right stepping connected to the generator The input 419b of the gate 419 is of the signal DOORSRT. 419 is zero if The output signal of the NAND gate are one, i.e. if the the input signals 419a and 419b both and the signal DOOP.SRT is right stepping motor is activated the output signal of the present. In all other situations that the output signal NAND gate 419 is one. This means

47 491.6 63

76. 967 t74 of flipflop 416 becomes zero if the right stepping motor is activated and the signal DOORSRT is present. The input 418b of the gate 418 is connected to the generator of the signal RESET. The operation of the flipf lop 416 is as follows. Hereby is started from the situation that the sorting device is completely reset, i.e. the signal RESET has be come temnpor- arily zero, and therefore the output signal 010 is one. As long as the left stepping motor is activated, i.e. the right sorting box is not used, the output signal Q10 remains one, whether or not the switch sorting-up has been used. As soon as the right sori~ing box-is used and there- fore the signal SM becomes one, the flipf lop 416 can be reset by means of the signal DOORSRT, whereby the output signal 010 becomes zero until the-signal RESET becomes temporarily zero again. The resetting of the flipflop 416 is obtained by means of the signal RESET, which is generated by actuating for a longer time the switch sorting-up. During setting of the flipf lop 416, the signal DOORSRT is generated firstly, whereby

In case the right stepping motor is activated the flipflop 416 is reset, thereby making the signal 010 zero, and thereupon the signal RESET is generated whereby the signal 010 becomes one again, whatever being the input signal 417a of the gate 417. The flipflop 420 is formed by two NAND gates 421

and 422 having each three inputs. The output Qll of the flipf lop 420 is formed by the

output of the NAND gate 421, the inputs 421a and 421b thereof forming the set-inputs. The input 421a is connected to the output 010 of the flipf lop, 416, whereby the flipf lop 420 is

48 4491,663

76.967 /74 is reset. The input set via this input if the flipflop 416 the NAND gate 409 generat- 421b is connected to the output of flipflop 420 is set via this ing the signal.15ST, whereby the zero. The input 422b of the input if the signal 15ST becomes of the signal PRT, gate 422 is connected to the generator input if the print whereby the flipflop 420 is reset via this to the sorting device knob of the copying apparatus coupled to the output Q14 is actuated. The input 422c is connected RST, whereby the of the flipflop 429, generating the signal if the flipflop 429 is flipflop 420 is reset via this input corresponds set. The output signal Qll of the flipflop 420 in the setposition the to the signal SM, or in other words and in the resetposition right stepping motor is activated the left stepping motor is activated. gates 424 The flipflop 423 is formed by two NAND

and 425 having each two inputs. The output Q12 of the flip-

the NAND gate 425, the flop 423 is formed by the output of The input 425b is input 425b thereof being the set input. EINDST, whereby the connected to the generator of the signal temporarily becomes zero. flipflop 423 is set if this signal input The input 424a of the gate 424 is the reset signal- PT, whereby and is connected to the generator of the the print knob of the the flipflop 423 is reset each time sorting device is actuated. copying apparatus coupled to the gates 427 The flipflop 426 is formed by two NAND

and 428 having each two inputs. The output Q13 of the flip- of the NAND gate 428, the flop 426 corresponds to the output set input which is connected input 428b thereof forming the The flipflop 426 to the output of the comparative circuit. becomes zero, or is set each time the signal VL temporarily

76.967 t74

in other words each time the binary number of the counter corresponds to the binary number of the memory device.

The input 427a of the gate 427 is the reset input

of the flipflop 426 and is connected to the generator of the

signal PRT, the flipflop 426 being reset each time the print

knob of the copying apparatus coupled to the sorting device

is actuated.

The flipflop 429 is formed by two NAND gates 430

and 431 the NAND gate 430 having two inputs and the NAND gate

431 having three inputs. The output Q14 of the flipflop 429

corresponds to the output of the NAND gate 430, the input

430a thereof being the reset input. This input 430a is con-

nected to the generator of the signal ET=lDST, the flipflop 429

being reset each tire the signal EINDST becomes zero. The

input 431b of the NAND gate 431 is connected to the output of

a NAND gate 432 g:..nerating the signal the flipflop 429

being set via tb input each time the signal NS becomes zero, i.e. each time thie binary number in the memory device 402 corresponds to zero and the signal PRT becomes one which is equal to actuating the already mentioned print knob. The in- put 431c of the NAND gate 431 is connected to the generator of the signal RESET, the flipflop 429 being set via this in-

put if the signal RESET becomes zero. The output signal Q14 of the flipflop 429 corresponds to the signal RST. The outputs Q2, Q4, Q6 and Q8 of the memory device 402 are connected respectively to the four inputs of a NAN] gate 432 having five inputs, the fifth input being connected to the generator of the signal PRT. As long as the signal PRT

is zero, the output signal of the NAND gate 432 is one. If

the signal PRT becomes one as a result of the actuating of

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76. 967 t74

the print knob of the copying apparatus coupled to the sort- ing device, and the signals 02, Q4, Q6 and Q8 of the memory device 402 correspond to the binary number zero, the output signal of the NANlD gate 432 becomes zero. The output signal of the NA.ND gate 432 corresponds to the signal S.

The three inputs of a NAN'D gate 433 are connected to the output of the NA~ND gate 409 generating the signal to the output of the flipf lop 429 generating the signal RST and to the output of the flipf lop 426 generating the signal 013 respectively. The output signal of the NAN~D gate 433 is only zero, if its three input signals are one, iLe. the LI-o' counter] 4O contains a binary number under-fifteen, the flip- flop 429 is reset which means that the signal EINDST has been generated, and the flipf lop 426 is set which means that the binary number of the counter corresponds to the binary number of the memory device. The output signal of the NAND gate 433 corresponds to the signal BO. The two inputs of a NAN~D gate 434 are connected to the generator of the signal OORSRT and to the output of the flipf lop 429, generating the signal RST respectively. The

output signal of the NAND gate 434 is only zero if its two input signals are one i.e. the switch sorting up.is not act- uated and the flipf lop 429 is reset which means that the signal EINMST is generated. The output signal of the NAN~D gate 434 corresponds to the signal R(M. Since the leading or increasing edge of this signal is used, it is important to know when the signal RGH is chang- ing from zero to one. Starting from the above mentioned situation this happens if the signal DOORSRT is generated, or the signal 1ESET is generated, or the signal NS is generated.

491.663

76. 967 174 The three inputs of a NAN:D gate 435 are connected RST, to the output of the flipflop 429 generating the signal of to the generator of the signal EInDST and to the generator

the signal PRT respectively. The output signal of the NAND

only zero if its three input signals are one, i .e. gate 435 is the flipf lop 429 is reset which means that the signal EI.DST

has been generated, the signal EIINDST is not or no more zero

and the print knob is not actuated. The output signal of the

NANDfl gate 435 corresponds to the signal RTL. For a good understanding of the operation of the

control circuit according to Figure 19 reference is made to from Figures 20 upi to and including 23., wherein the changing

one to zero or vice versa of each signal that is important

in the control circuit of Figure 19, is represented as a

function of the time and as a function of external signals.

on the left side of each of the Figures 20 up to and including 23 the distinct signals are indicated, the first seven being In external signals for the control circuit of Figure 19.

the Figures 20-23 the various external actions are indicated being by means of a vertical line, the nature of these actions described above the Figures. it must be noted that the horizontal axis is no real time axis, but only an approach, whereas at defined positions the horizontal axis is interrupted in order to indicate an undefined time lapse. In Figure 20 the operation of the control circuit of Figure 19 is schematically represented in case sorting method

A has been selected. Hereby is started from the situation

that the sorting device is in the zero position, i.e. the cam

shaft of the left sorting box is in the end position, or in

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76. 967 t74 into the the position wherein the first copy is transported 402 and the first bin, and the counter 401, the memory device In the control counter 311 are set on the binary number zero. the values circuit represented in Figure 19 the signals have RESET". How represented in Figure 20 at the height of ONA the follow- this situation is achieved will become clear from ing description. By actuating the print knob of the copying apparatus change since by coupled to the sorting device, no signal will As soon selecting sorting method A the signal PRT is blocked. and is as the first copy arrives into the sorting device box, a signal deposited into the first bin of the left sorting COPIE is generated.This signal COPIE generates a signal whereby the with greater pulse width, i.e. the signal W IV, a result of output signal of the gate 411 becomes zero, as and the output which the output signal of gate 413 becomes one signal of the gate 414 zero. if more than one copy of the be in the same original are produced, the second copy will the signal sorting device and generate a signal COPIE before Thereby the signal MMV is extended, ioMV is changed to zero. the first the situation generated after the appearance of MMfV is one, the signal COPIE being maintained, i.e. the signal signal 'TP zero. signal SM-PULS one, the signal S!UA zero and the In. the diagram of Figure 20 it is supposed that Upon three copies of the same original have to be produced. copy, the generating the signal COPIE of the third and last lapse signal NMV is changed from one to zero after a defined the signal SM- of time, whereupon the signal S14A becomes one, PULS zero and the signal P one. The changing to zero of the over one step, signal SM-PULS causes the stepping motor to turn

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76. 9671t74 or in other words the next copy will be transported into the second bin. The changing to one of the signal TP causes the output signal Qi of the counter 401 to change to one. Since the binary number present in counter 401 is now differ- ent from the binary number in the memory device 402 the out- put signal of the comparative circuit becomes one. When hereafter a second original is put in the copying machine coupled to the sorting device and the print knob is actuated, nothing will change until again the first copy arrives into the sorting device and generates a signal COPIE. This causes the same changes of signals as in the case of the first original, i.e. the signal 124V becomes one, the signal SiiA becomes zero, the signal SM-PULS becomes one and the signal TP becomes zero. After the last: copy of the second original is deposited into the sorti~g device, the above cited signals are inverted, as a result of which the stepping motor is turned over one step-and in the counter 401 the binary number two is set. At the next original the above mentioned operation is repeated, the stepping motor being turned over one step and in the counter 401 there is added one. This operation is

continued in the same way until the fifteenth original. When

the last copy of the fifteenth original is deposited into the

fifteenth and so last bin of the left sorting box, and after the signal MMV has become zero, the number fifteen will be set in the counter 401, whereby the output signal of the gate 409 becomes zero. As a result thereof the output signal of the gate 433 or the signal BO becomes one, because the oscillator becomes operative. The oscillator pulses OSC are transmitted to the left stepping motor via the gate 413, whereby initially

491663 5"4

7 6. 967 /74 in order to the left cam shaft is turned over a few steps, the out- free the transport path for the next copies. Since the inputs of the put of the gate 409 is connected to one of Qll of this gate 421 of the flipflop 420 the output signal SM becomes flipflop becomes one or in other words the signal connect- one. Since a delaying device is incorporated in the 420 and the ion line between the output Qll of the flipflop after the decoder 308, the right stepping motor is actuated steps. left stepping motor has still made a number of At the same time as the signal 15ST becomes zero, pulse is not the gate 414 is blocked, so that the oscillator stepping motor now transmitted to the counter 401. The right of the right will start operation and will turn the cam shaft wherein the sorting box until the latter reaches the position of the right next copy will be transported into the first bin of the right cam sorting box, or the so-called end position whereby the shaft. Thereby the signal EINDST is generated reset the output signal of the gate 435 becomes one, which signal of the counter 401, in consequence whereof the output signal of the comparative circuit becomes zero and the output

gate 409 becomes one, by which the output signal of the gate

433 becomes zero and the oscillator is blocked whereas the

gate 414 is activated. When now copies of a sixteenth original

are transported into the sorting device, the operation will be first and the same as described above with respect to the in this way second original. A special situation occurs if which corresponds is operated until the twentyninth original, the right sorting to the fourteenth original to be sorted in

box. After the transporting of the last copy of the

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76.967 /74

twentyninth original the signal MMV has become zero and the counter 401 is set to the number fourteen, and because the signal SM is one, the output signal of the gate 410 becomes zero, whereby the gate 411 as well as the gate 412 is blocke d, as a result of which it is not possible to generate a signal SM-PULS. All copies of any next original will now be trans- ported into the last and fifteenth bin of the right sorting box. in Figure 21 the operation of the circuit of Figure 19 is schematically represented in case sorting method B has been chosen. once again is started from the situation that the sorting device is completely reset, i.e. the cam shaft of the left sorting box is in the end position or in other words

in the position wherein the next copy will be transported into the first bin, and the -counter 401, the memory device 402 as well as the counter 311 are set on the binary number zero. In the electric circuit represented in Figure 19 the signals have the values represented in Figure 21 at the height of "NA RESET". How this situation is reached will be described hereinafter. At the actuation of the print knob the signal PRT will be generated since the sorting method B has been selected. As a result the output Q12 of flipf lop 423 becomes zero and the output of the gate 432 becomes also zero because the memory device is set on the binary number zero and therefore its four output signals are one. The output signal Q13 does not become zero because the output signal of the comp~arative circuit is zero at that moment. As the signal NS becomes zero, the signal RST becomes also zero whereby the signal BO becomes one and the oscillator is started. As a result the left stepping-motor

9L 6 6 3

76.967 /74 starts turning. But the signals SM-PULS are not transmitted to the counter 401, because the gate 414 is blocked since the signal Q12 is zero. As soon as the left cam shaft has reached its end position the signal EINDST is generated whereby the flipflop 429 is reset and therefore the signal RST becomes one again, thereby stopping the oscillator and resetting the flip- flop 423 thus making the signal Q12 one which opens the gate 414. This all happens within the time needed to make the first copy, so that still no signal COPIE has been generated. As thereupon the first copy is transported into the first bin a signal COPIE is generated and since sorting method B has been selected, the signal SMB becomes zero, whereas signal SM-PULS becomes one and the signal TP zero. As soon as

the first copy is completely in the bin the cited signals are inverted, whereby the stepping motor turns over one step and the counter 401 is set on the binary number one. The next

copy will be transported into the second bin. Because the

counter 401 is set on the number one, the number of the counter 401 is different from the number of the memory device 402, whereby the signal VGL becomes one. At the transporting of

the second copy into the second bin the above cited operation is repeated, the counter being set to two and the signal VGL being unchanged. This is repeated until the fifteenth copy, in case so much copies are made, whereupon the counter is set to the binary number fifteen whereby the signal 15ST becomes zero and the signal BO one, thus starting the oscillator. At

the same time as the oscillator is started the gate 414 is blocked because the signal 15ST has become zero, whereas the signal SM becomes one because the input signal 421b of the flipflop 420 becomes one. Since the signal SM is transmitted

57 491663

76.967174 with delaying time to the converter 308, the first oscillator pulses will be transmitted to the stepping motor of the left cam shaft, whereby the latter still will turn over a few steps and will stop in a non active position at which moment the right stepping motor is activated, because the signal SM has become one, whereupon this motor turns over a number of steps until the right cam shaft reaches the end position. By reach- ing the end position the signal EINDST is generated, whereby the output signal of the gate 435 becomes one and the counter 401 is reset. Thereby the signal 15ST becomes again one and the oscillator stops. The sixteenth copy will now be trans- ported into the first bin of the right sorting box. After the twentyninth copy Is transported into the twentyn inth bin, in case so much copies are made, the counter 401 reaches the number fourteen and because the right stepping motor is acti- vated the signal SM is one, whereby the signal 1T~ becomes zero thus blocking the gates 411 and 412. The thirtieth copy is nevertheless transported into the thirtieth bin, but the right cam shaft cannot be rotated further because the signal SMB remains always one. All the next copies so will be trans- ported into the thirtieth bin. When thereupon a new original is put in the copying apparatus and the print knob is actuated and it is supposed that seven copies of the first original have been made, we have the situation as represented in Figure 21 left with respect to "print 2nd original". By actuating the print knob the -signal PRT is generated again, whereby the signal SM be- comes zero, the signal Q12 becomes zero thus blocking the gate 414, the signal Q13 becomes zero because the signal VG__ is one and whereby the signal RT becomes zero because the signal fS

58 5491663

76.967 /74 has become zero. The signal BO becomes one and the oscillator starts operation. The pulses of the oscillator are transmitted to the left stepping motor, but not to the counter 401. At the

same time the counter 401 is reset via the gate 435 by the signal PRT, whereas by the changing to zero of the signal RST the output signals of the memory device are adapted to the output signals of the counter 401, i.e. the memory device is reset. The left cam shaft continues turning until it reaches

the end position, generating the signal EINDST, whereby the signal RST via flipflop 429 becomes one again and the signal Q12 via flipflop 423 becomes also one, thereby opening the gate 414. At the same time the signal EINDST adopts the signals PRT and RST with respect to gate 435. Now the sorting

device is again in the situation wherein the next copy will be transported into the first bin of the left sorting box. The subsequent operation is completely identical as described with respect to the assortment of the copies of the first original. In Figure 22 the operation of the control circuit of Figure 19 is schematically represented for the case that sort- ing method B has been selected, and that seven copies have been made of a defined number of originals and are assorted according to method B, and whereupon the knob "sorting-up" is actuated in order to make every time five copies of a next set of originals and to assort these copies according to method B. By actuating the knob "sorting-up" the signal DOORSRT is generated whereby the signal RGH becomes one whereby the memory device 402 adopts the situation of the counter 401 and the signal VGL becomes zero. The signals have then the values

59 49L663

76,967 /74 represented in Figure 22 left with respect to "PRINT 10 ORIG". As the print knob of the copying apparatus then is actuated the signal FRO is generated whereby the signal RTL becomes one, the signal Q12 zero and the signal Q13 zero, because the output signal of the comparative circuit is one. Since the memory device 402 is not reset, the signal UiS does not become zero. Because the signal 012 becomes zero the gate 414 is blocked, whereas the oscillator is started because the output signalQ013 becomes zero, the pulses of which oscil- lator are transmitted to the left stepping motor, but not to the counter 401. The left cam shaft continues turning until it reaches its end position, at which moment the signal EINDST is generated whereby the output signal Q12 becomes one again and the gate 414 is opened. The oscillator continues operation and its pulses are now transmitted to the stepping motor as well as to the counter 401. As soon as the counter 401 reaches the number cor- responding to the number of the memory device 402 the signal VGL becomes zero whereby the signal Q13 becomes one again and the oscillator is stopped. Because the memory device is set to the number seven, as cited above, the counter also reaches the number seven and the stepping motor is turned till the position wherein the next copy will be transported into the eighth bin. It must be noted that all this happens in the time before the first copy has left the copying apparatus. When thereupon the first copy is transported into the eighth bin the operation is further identical as described with re- spect to Figure 21, with the difference that the counter starts counting from seven and not from zero. When the second original is put into the copying apparatus the operation remains almost

491.663

76.967 /74 to Figure 21, with the identical as described with respect turned till the posi- difference that the stepping motor is into the eighth bin. tion wherein the copy is transported described here The operation at sorting up had been have been made of the by way of example in case seven copies than fifteen copies have first set of originals. In case more the operation is been made of the first set of originals, up the signal SM has slightly different because at sorting is generated, the become one and if now the signal DOORSRT zero whereby the signal output signal of the gate 419 becomes Qll remains one whatever 010 becomes also zero and the signal 420. being the/ signals 422b and 422c of the flipflop copies A special case is also present when fifteen method B has been are made of the first original, sorting the copying selected and the second original is put into of the circuit of apparatus. For this case the operation in Figure 23a. Because Figure 19 is schematically represented original, the signal fifteen copies have been made of the first reset (see Figure SM has become one and the counter has been When now the print 21 at the height of the fifteenth copy). zero, whereby the gate knob is actuated the signal 012 becomes thus making the 414 is blocked, the signal NS becomes zero zero. So the left signal RST zero, and the signal SM becomes the left cam stepping motor is actuated again and because the oscillator is shaft is stopped in an undefined position, until the end position started and the left cam shaft turned is reached as is reached. In this way the same situation height of "PRINT 2e described with respect to Figure 21 at the are deposited, ORIG". When thereupon the first and next copies respect to the the operation is in no way different with

76. 967/74 operation described with respect to Figure 21. In the Figures 23b and 23c at least the operation of the circuit is represented in case the sorting device is reset, in Figure 23b in case the first seven bins have been used and in Figure 23c in case the first twentyone bins have been used. Hereby it is unimportant whether these situations are obtained via sorting method A or via sorting method B.

In case the first seven bins have been used the signals have

the values represented in.Figure 23b. By actuating the knob

reset, the signal DOORSRT is initially generated. Thereby

the output signal of the gate 434 becomes one, whereas this signal DOORSRT does not influence the output signal of the

gate 419 because the signal SM is zero. In that the output

signal of the gate 434 becomes one the memory device 402 is

caused to open whereby the number set in the counter 401 is

adopted by the memory device 402. Thereupon the signal RESET

is generated, whereby the output signal of the flipflop 429 becomes zero, i.e. the output signal of the gate 434 remains one and that of the gate 435 becomes one, whereby the counter

401 is reset and the memory device 402 adopts the situation

of the counter. At the same time the output signal of the

gate 433 becomes one thereby starting the oscillator, the pulses of which being transmitted to the left stepping motor

via the gate 413 and to the counter 401 via the gates 414

and 415, the counter being however in the non active state.

The left stepping motor continues turning until the associated

cam shaft reaches its end position. At that moment the flip-

flop 429 is reset, whereby the signal RST becomes one again,

thus making the output signals of the gates 434, 435 and 433

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76.967/74 zero again, and stopping the oscillator. By the resetting the at the same time of the counter and of the memory device, zero output signal of the comparative circuit becomes also again. In case twenty-one bins have been used, as repre- sented in Figure 23c, the operation principally is identical, output with this difference that the changing to zero of the signal of the flipflop 429 resets the flipflop 416 thereby making the signal SM zero. As soon as the signal RESET has been generated, i.e. before the oscillator is started, the left stepping motor is actuated again. From the above it becomes clear that always in the situation is achieved represented as start position Figure In case of twenty-one bins, the signal DOORSRT is initially generated, as already mentioned. Because at that moment the signal SM is one and therefore the right stepping motor is activated the output signal of the gate 419 becomes 416. zero and therefore also the output signal of the flipflop signal When thereupon the signal RESET is generated, the output of the flipflop 416 becomes one again. At that moment the become flipflop 420 can be reset again i.e. the signal SM can zero. It is clear, that the invention is not restricted to the embodiment described and represented here, but that numerous modifications can be made, without deviating from the idea of the invention. Thus the receiving trays can be

constructed in an other way, as well as the reversing mechanism 260. Further it is possible to couple more sorting devices, in for instance by also installing the lowest receiving tray

76.967 174 way, and by installing a the right sorting box in a movable which mechanism again a transport mechanism below this, to type is joined. Further following sorting device of the same trays are installed it 'is not necessary, that the receiving for instance receiving trays horizontally. More particularly installed under an angle with regard to the horizontal may be compon e,~f-s and the transport mechanism used, whereby the scraping~orgaaGs near the upper extremities. for the sheets are situated on and scope of the invention are Also other arrangements within the possible. the signal Further it is possible to modify of the signal EINST. genratrsfor instance the generator generator, a reflective In another enibodilnent of this signal cam shaft, instead of or white surface is provided on each light source and a photo- the above mentioned recess, and a the cam shaft, whereby transistor are provided opposite to its end position the light every time the cam shaft reaches onto the phototransistor, from the light source is reflected can for- exam~ple by which becomes conductive. This signal into a signal FINDST. means of a Scbhitt-trigger be modified in Figure 15 the Additionally it may be noted that gate 361 is not necessary, signal SM as an input signal of the shaft which can be because there is always only one cam is generated, this signal turned, so that if a signal INDST cam shaft which is at that must be generated by means of the moment operative. DOORSRT In another modified embodiment the signal of two separate switches, and RESET can be generated by means with respect to and not by means of one switch as described Figure 14.

491.663

76.967 174 Further it is possible to connect the on/off switch RESET is of the sorting device to a circuit, whereby a signal may be generated every time the device is switched on. This the only method by which the device can be reset. Finally it is also possible to provide one more device external switch at every actuation of which the sorting can be shifted over one bin, i.e. the activated stepping motor turns over one step. Such a circuit may be identical 325 of to the circuit comprising the elements 321, 323 and by a switch. Figure 13, the photoresistor 291 being replaced The output signal of the gate 325 may be named the signal gatek43 in STAP, which can be used as a fourth input of the Figure 19.

76.967 174

follows: The claims defining the invention are as comprisinlg a 1. Device for the collation of sheets, sheets to be collated number of bins, means for transporting the along this track, and along a track, said bins being situated selectively into the guide comnponents which can be brought to transport a sheet track of movement of the sheets in order in that each of a number into its respective bin, characterized components which is of bins is provided with one of the guide bin can be moved an integral part of the bin, whereby each in which the guide between two positions, a first position of the sheets, and component protrudes in the track of movement is situated out a second position in which the guide component of the track of movement of the sheets. in 2. Device according to claim 1, characterized the sheet is deposited that when a bin is in the first position, of movement of the in the preceding bin, seen in the direction sheet. in Device according to claim 1, characterized the sheet is deposited that when a bin is in the first position, into this bin. 4. Device according to any one of the preceding position of each bin claims, characterized in that the second within the field of is the only stable condition of equilibrium movement of the bin. in Device according to claim 4, characterized wheels which that each bin is provided with freely rotatable support the next higher bin. in 6. Device according to claim 4, characterized by means of links that each bin is connected with a frame with the bin and which on the one part are hingedly connected

66 66491.663

76.967 /74 the frame. on the other part are hingedly connected with 7. Device according to any one of the preceding the sheets form an claims wherein the means for transporting part, and endless track with a rising part and a descending one group with the bins the bins are installed in two groups, the rising part at least partially above each other lies beside group with the bins of the track of transport and the second beside the descending at least partially above each other lies

part of the track of transport. in 8. Device according to claim 7, characterized of a vertical rising that the track of transport is built up vertical descending part, a substantially horizontal part, a part. part and a substantially horizontal return 9. Device according to claim 7 or 8, characterized sheets comprise a in that the means for transporting the be maintained, and suction box, in which an underpressure can which can move a number of mutually parallel endless belts, in the track parts round this suction box whereby at least of the interspaces where bins are situated and at the height underlying wall or between the belts openings are made in the

walls of the suction box. to 9, Device according to any one of the claims 7 at the height of wherein in the transport track of the sheets descending part a the transition from the rising part into the

sheet reversing device is installed. 11. Device according to claim 10, characterized in between the that the transport track makes a sharp bent component is transition part and the descending part, a guide part, which installed in the lengthened part of the transition

component is installed obliquely with regard to the horizontal,

67 491663

76.967 /74 and in that at the height of this sharp bent no suction force acts on the sheet being transported. 12. Device according to any one of the preceding claims, wherein the sheets are introduced in succession into of the track of movementl two successive sheets being members the same group if a predetermined short time elapses between the and two introduction of said sheets into the track of movement; forming successive sheets being members of different groups and the last and first sheet respectfully of said groups if a longer time than said predetermined time elapses between the intro- duction of these sheets into the track of movement, character- ized in that means are provided to select one of two sorting methods, a first method wherein all sheets of the same group is are transported into the same bin and every group of sheets each transported into another. bin, and a second method wherein th bin, the n sheet of every group is transported into the n changing franom one bin to the next bin in the first sorting method being caused by the longer time lapse between the last sheet of the one group and the first sheet of the next group. 13. Device according to claim 12, wherein the guide of components are controlled by a stepping motor, at every step a said stepping motor one guide component being brought into non-operative condition and the next guide component being brought into its operative condition and wherein the device by further is provided with a first signal generator controlled a switch, whereby the sorting method selected can be chosen,

49t663

76.967 /74 which signal generator has two outputs in the first output the first of which a signal being generated if via the switch of sorting method has been chosen and in the second output second which a signal being generated if via the switch the in sorting method has been chosen, a second signal generator time the output of which a signal pulse being generated every sorting a sheet is transported into one of the bins of the to the device, a third signal generator which is connected output first output of the first signal generator and to the third of the second signal generator in the output of which time a signal generator a signal pulse being generated every and signal pulse is generated in the second signal generator if l1 signal is generated in the first output of the first the signal generator which signal pulse lasts longer than successive time passing away between the introduction of two passing sheets of the same group but shorter than the time one group away between the introduction of the last sheet of gener- and the first sheet of the next group, a fourth signal signal gener- ator connected to the second output of the first in the ator and to the output of the second signal generator pulse being output of which fourth signal generator a signal second out- generated every time a signal is generated in the- is put of the first signal generator and a signal pulse a fifth generated in the output of the second signal generator, the first signal generator connected to the first output of signal gener- signal generator and to the output of the third a signal ator in the output of which fifth signal generator the first pulse being generated if a signal is generated in pulse is output of the first signal generator and a signal and that generated in the output of the third signal generator

69 491663

Claims (1)

1. 76.967/74 the outputs of the fourth and of the fifth signal generator are connected to the stepping motor in such a way that the stepping motor turns over one step at every signal pulse generated in one of the outputs of the fourth or the fifth signal generator. 14. Device according to claim 13, characterized in that a counter is provided the input of which being connected to the outputs of the fourth and of the fifth signal generator which counter counts the pulses generated in one of these out- puts, in the outputs of which counter signals being generated, each different combination of which representing another number and the actual combination corresponding to a number which is equal to the serial nuxnber of the bin into which the last sheet has been transported. Device according to claim 14, characterized in that a number of outputs of the counter is connected to a sixth signal generator in the output of which a signal is generated if the combination of the signals in the outputs of the counter corresponds to the number which is equal to the serial number of the last but one bin of the sorting device, the output of the sixth signal generator being connected to the fourth and to the fifth signal generator whereby these signal generators are blocked if a signal is generated in the output of the sixth signal generator. 16. Device according to claim 14 or 15, character- ized in that the counter is a ring counter. 17. Device according to one of the claims 14-16, characterized in that there is also provided a seventh signal generator connected to reset means, by actuation of which the sorting device is reset to the starting condition, in the

   76.967 /74 generator a signal pulse being output of which seventh signal reset means, further an generated upon actuation of said output of which a signal pulse eighth signal generator in the the guide-qra6 pertaining being generated at the moment that the transport track of the to the first bin is brought into which is connected to one sheets, and a ninth signal generator generator, in the output of the outputs of the first signal a signal pulse being generated of which ninth signal generator second sorting method are if signals corresponding to the first signal tg Z 1dand a generated in the outputs of the that a new group of sheets signal pulse is generated indicating device; the outputs of will be introduced into the sorting to the reset input of said signal generators being connected is reset to zero if a signal the counter, whereby the counter outputs. pulse is generated in one of the 17, characterized in 18. Device according to claim that a new group of sheets that the signal pulse indicating device is generated by will be introduced into the sorting copying apparatus coupled to actuation of the print knob of a the sorting device. in 19. Device according to claim 17, characterized group of sheets that the signal pulse indicating that a new device is generated as a will be introduced into the sorting than the time passing result of a time lapse lasting longer successive sheets of the away between the introduction of two same group. 17-19, Device according togone of the claims generator characterized in that further a tenth and an eleventh in each output of which are provided having each two inputs, if a signal or a signal signal generators a signal is generated

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   76.967 /74 generated in the first input, which output signal pulse is pulse is generated in the remains until a signal or a signal

   second)^L1tP the first input of the tenth signal generator ninth signal generator, being connected to the output of the being con- the first input of the eleventh signal generator signal generator and the nected to the output of the seventh eleventh signal gener- second inputs of the tenth and of the of the eighth signal gener- ator being connected to the output input, in the output ator, and an oscillator having a control of which oscillator a first constant signal is generated if no and signal pulses signal is generated in the control input, genera±ted in the control are generated as long as a signal is to the outputs of input, the control input being connected generator, and the output the tenth and of the eleventh signal the stepping motor and of the oscillator being connected to

   to the input of the counter. Device according to claim 20, characterized in 21. of the fifth signal gener- that the outputs of the fourth and to the input of the ator and of the oscillator are connected a control input, which counter via a switching element having generated by switching element transmits the signal pulses is generated in the said signal generator as long as no signal

   control input, this control input being connected to the out-

   put of the tenth signal generator. 22. Device according to/one of the claims 12-21, a first group wherein the bins are divided into two groups, to the bins of and a second group, the guide organs pertaining motor, the first group being controlled by a first stepping by a second and those of the second group being controlled two stepping motors stepping motor, characterized in that the

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   76.967 174 and of the fifth are connected to the outputs of the fourth via a selection circuit signal generator and of the oscillator indicating which which is controlled by a signal generator group of bins is used. in 23. Device according to claim 22, characterized which is con- that a twelfth signal generator is provided, the output of which nected to the outputs of the counter, in if the combin- twelfth signal generator a signal is generated counter corresponds to ation of signals in the outputs of the of the last bin a number which is equal to the serial number generator having of the first group, and a thirteenth signal is generated if a two inputs, in the output of which a signal in the first signal or signal pulse is or has been generated signal or signal pulse input, which signal is lasting until a input being con- is generated in the second input, the second of the ninth signal nected to the outputs of the eleventh and to the output of generator and the first input being connected the the signal generator, and that the output of input thirteenth signal generator is connected to the control of the switching ele- of the oscillator, to the control input stepping motors, the ment and to the selection circuit of the being energized if stepping motor of the first group of bins motor of the second no signal is generated, and the stepping is generated. group of bins being energized if a signal each 24. Device according to claim 23, wherein of energizing windings stepping motor is provided with a number the right sequence which must be energized subsequently and in characterized in that to turn the motor over subsequent steps, connected to a the windings of the first stepping motor are and the windings first group of outputs of the selection circuit

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   76 967 /74 second group of the second stepping motor are connected to a the output of the of outputs of the selection circuit, that a first input of thirteenth signal generator is connected to only can be the selection circuit, whereby a signal pulse group if no signal generated in one of the outputs of the first pulse only can is generated in said first input, and a signal group if a be generated in one of the outputs of the second the outputs of signal is generated in said first input, that generator and the fourth signal generator, of the fifth signal of a second binary of the oscillator are connected to the input circuit, where- counter and to a second input of the selection of the outputs by a signal pulse only can be generated in one of the selection circuit if a signal is generated in the binary counter second input, and that the outputs of the second circuit, are connected to respective inputs of the selection into a and the signals of the second counter are converted of one of the signal pulse transmitted to one of the windings in the stepping motors in dependence on the signals generated first and the second input of the selection circuit. Device according to claim 24, characterized in -thi rtee,-+^ that the output of thelfarth signal generatorr connected to the element. selection circuit via a signal pulse-width lengthening 26. Device according to claim 24 or 25, wherein character- every stepping motor is provided with four windings, a BCD-to- ized in that the selection circuit is formed by to the decimal decimal converter, the windings being connected to and including outputs corresponding to the numbers zero up seven. in 27. Device according to claim 12, characterized

   74 491663

   76.967 /74' a switching that sorting-up means are provided", comprising reset to a starting member whereby the sorting device can be used is the first bin condition wherein the first bin not yet to be used in the following sorting operation.oran according to claim 27 a~adone of the 28. Device signal gener- claims 13-21, characterized in that a fourteenth the switching member of ator is provided which is connected to i a signal the sorting-up means, by actuation of whichkqQa fourteenth signal pulse is generated in the output of said to the outputs of generator, further a memory device connected the memory device the first counter and having a reset input, counter if a signal is adopting the signal combination of said input is connected generated in the reset input, which reset fourteenth signal to the outputs of the seventh and of the to the outputs of generator, a comparative -circuit connected in the output of the first counter and of the memory device, as long as which comparative circuit a signal is generated the counter corres- the signal combination in the outputs of of the memory ponds to the signal combination in the outputs connected to the out- device, and a fifteenth signal generator outputkta the ninth put of the comparative circuit and to the fifteenth signal signal generator, in the output of which output of the com- generator a signal is generated if in the which signal is stopped parative circuit-a signal is generated, a signal pulse if in the output of the ninth signal generator signal generator is generated, the output of the fifteenth being connected to the input of the oscillator. in 29. Device according to claim 28, characterized connected to the that a sixteenth signal generator is provided output of the ninth outputs of the memory device and to the

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   76.967 /74 signal generator, in the output of which sixteenth signal of generator a signal pulse is generated if the combination to signals in the outputs of the memory device corresponds gener- the number zero and in the output of the ninth signal sixteenth ator a signal pulse is generated, the output of the of the signal generator being connected to the first

   eleventh signal generator. Device according toLone of the claims 22-29, is pro- characterized in that a seventeenth signal generator is vided having two inputs, in the output of which a signal

   generated if a signal or signal pulse is or has been generated a signal in the first input, which signal is maintained until the first or signal pulse is generated in the second input, signal input being connected to the output of the seventh signal generator and the second input being connected to a and of the generator combining the signals of the thirteenth pulse if fourteenth signal generator and generating a signal pulse. both signal generators produce a signal or a signal

   DATED this THIRTIETH day of DECEMBER, 1974

   OCE-VAN DER GRINTEN N.V.

   Patent Attorneys for the Applicant SPRUSON FERGUSON

   491663

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