EP0221823A1 - Station d'exposition et appareil de reproduction d'originaux par diazocopie comportant ladite station - Google Patents

Station d'exposition et appareil de reproduction d'originaux par diazocopie comportant ladite station Download PDF

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Publication number
EP0221823A1
EP0221823A1 EP86420230A EP86420230A EP0221823A1 EP 0221823 A1 EP0221823 A1 EP 0221823A1 EP 86420230 A EP86420230 A EP 86420230A EP 86420230 A EP86420230 A EP 86420230A EP 0221823 A1 EP0221823 A1 EP 0221823A1
Authority
EP
European Patent Office
Prior art keywords
exposure
rollers
cylinder
belt
station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86420230A
Other languages
German (de)
English (en)
French (fr)
Inventor
Daniel Crosnier
Patrice Lepicard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Regma
Original Assignee
Regma
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Regma filed Critical Regma
Publication of EP0221823A1 publication Critical patent/EP0221823A1/fr
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D7/00—Gas processing apparatus

Definitions

  • the present invention relates to an exposure station for apparatus for reproducing originals by diazocopy, it also relates to an apparatus for reproduction by diazocopy which comprises such a station.
  • Apparatuses for reproducing originals by diazocopying generally comprise at least one exposure station in which the copy is exposed through the original to form a latent image on the copy and a development station in which the copy carrying the image latent undergoes processing so that the latent image becomes visible.
  • the copy and the original are driven around the exposure cylinder by at least one endless belt surrounding rollers, at least one of which is driven in rotation, the belt or belts enveloping part of the exposure cylinder.
  • the exposure cylinder and the rollers are all of parallel axes, these axes being perpendicular to the direction of movement of the copy and the original.
  • the exposure cylinder which is substantially transparent and provided internally with lamps, must be held in place and the rollers must be supported in rotation at their ends.
  • the exposure station is provided at its ends with removable flanges, which allow it to be fixed to the frame of the diazocopy machine and the rollers are supported at their ends by the flanges by means of bearings, bearings or bearings.
  • An object of the invention is an exposure station for a copy machine which is of a simplified design and thus inexpensive.
  • An exposure station has now been found for an apparatus for reproducing originals by diazocopying, said station comprising an exposure cylinder and means for driving the copy and the original around said cylinder, said means being constituted by at least one endless belt surrounding at least three rollers, at least one of which is rotated, said rollers being such that their axes are parallel and form the edges of a prism, said belt enveloping part of the surface of the exposure cylinder, the axis of which is parallel to the axes of the rollers, said exposure cylinder being placed in such a way that the part of the belt which envelops it is deflected towards the inside of the prism defined by the axes of the rollers, characterized in that the rollers are supported at their ends directly by support plates.
  • the rollers are supported at their ends directly by the support plates, that is to say without bearings, bearings or intermediate bearings. Certainly, it is not excluded to provide the ends of the rollers with rings of material having a low coefficient of friction.
  • the support plates are provided with semi-cylindrical bearing surfaces intended to receive the ends of the rollers, said bearing surfaces being arranged in such a way that the belt wrapping said rollers keeps the ends of the rollers in contact with said spans.
  • the exposure station is such that the exposure cylinder and the rollers located upstream and in downstream of it relative to the direction of movement of the belt are arranged in such a way that the exposure cylinder is in contact with each roller via the belt, the axis of the exposure cylinder being located inside the prism defined by the axes of the rollers and that the exposure cylinder is held in position directly by the belt.
  • the support plates have an access opening inside the exposure cylinder. This opening allows an easy change of the lamps located in the cylinder without dismantling it.
  • the support plates may further comprise means for holding the exposure lamps inside the exposure cylinder.
  • the ends of the rollers are effectively maintained in contact with the semi-cylindrical bearing surfaces of the support plates and, on the other hand, the exposure cylinder is held in position and, moreover, the mounting and disassembly of the rollers and the exposure cylinder are easy, it is advantageous for the belt to be elastic.
  • the support plates have a plane of symmetry containing the axis of the exposure cylinder.
  • the support plates are in this case identical and can be used interchangeably to support the right or left ends of the rollers, the right and the left being defined for an observer located above the station and watching the copy come out.
  • the exposure station object of the invention, is intended to equip a device for reproducing originals by diazocopy.
  • an apparatus for reproducing originals by diazocopy of modular design such an apparatus consisting of at least two modules, a first module containing the exposure station according to the present invention and a second module containing a development station.
  • Such a reproduction apparatus may also include, in addition, a module for supplying copy paper.
  • the exposure station (1) comprises, inside a bodywork (3) fixed to a frame. support (not shown): - a substantially transparent exposure cylinder (2) made of a material such as glass or a plastic material, inside which three exposure lamps (4) are placed, - drive means (5) for the copy and the original around the exposure cylinder (2).
  • the drive means (5) for the copy and the original around the exposure cylinder (2) consist of at least one endless belt (6) surrounding, according to the embodiment shown, four rollers (7 , 8, 9, 10), and enveloping part of the surface of the exposure cylinder (2). At least one of the rollers, for example the roller (10) is rotated, the other rollers (7, 8, 9) spinning wildly, and the exposure cylinder (2) spinning freely.
  • the roller (10) can be rotated by an electric motor directly or by means of a transmission, for example by toothed belt.
  • the axes of the rollers (7, 8, 9, 10) and of the exposure cylinder (2) are parallel, the axes of the rollers (7, 8, 9, 10) form the edges of a prism and the cylinder of exhibition (2) is placed so that the part of the belt (6) which envelops it is deflected towards the inside of the prism defined by the axes of the rollers (7, 8, 9, 10).
  • the belt (6) is in contact on one of its faces with the surface of the rollers (7, 8, 9, 10), the other face of the belt (6) being in contact with the surface of the cylinder d exhibition (2).
  • the original superimposed on the copy are introduced at F1 between the moving belt (6) and the exposure cylinder (2), travel around the exposure cylinder (2) under the effect of the movement of the belt (6) and emerge at F2 between the exposure cylinder (2) and the belt (6).
  • the contact pressure between the belt (6) and the exposure cylinder (2) is sufficient for the assembly formed by the original and the superposed copy to be driven by the belt (6), the cylinder exposure (2) being rotated.
  • rollers (7, 8, 9, 10) are supported at their ends directly by support plates (11), fixed to the frame by suitable means, such as fixing lugs (12).
  • Such a support plate (11) is shown in FIG. 2.
  • the support plates (11) are provided with semi-cylindrical bearing surfaces (13, 14, 15, 16, 17) intended to receive the ends of the rollers (7, 8, 9, 10).
  • the semi-cylindrical surfaces (13, 14, 16, 17) are arranged in such a way that the belt enveloping the rollers (7, 8, 9, 10) holds the ends of the rollers in contact with the semi-cylindrical bearing surfaces.
  • the support plates can be made of metal such as aluminum or an aluminum alloy, they can preferably be made of plastic.
  • the material chosen to make the support plates will be sufficiently resistant, so that the support plates do not deform, will have a low coefficient of friction, so that the ends of the rollers easily rotate on the semi-cylindrical bearings, and will be of preferably moldable.
  • Plastics such as polyacetals, polyamides, polyesters, polyphenylene oxides, loaded or not, are particularly suitable.
  • the ends of the rollers (7, 8, 9, 10) are supported directly by the support plates (11) without the use of bearings, bearings or intermediate bearings.
  • the ends of the rolls of end pieces (18) can be provided, as shown in FIG. 3, for example in polyamide, comprising a groove (19) in which is housed a ring (20), for example in polytetrafluoroethylene.
  • the ring (20) turns freely relative to the end piece (18) on the one hand, and relative to the semi-cylindrical bearing surface of the support plate (11), on the other hand.
  • the exposure station, object of the invention does not include any particular means for holding the exposure cylinder in place.
  • the exposure cylinder (2) and the rollers located upstream, roller (10), and downstream, roller (7), of the exposure cylinder (2), relative to the direction of movement of the belt (6), are arranged in such a way that the exposure cylinder (2) is in contact at (21) and (22) with each roller (10) and (7) via the belt (6 ).
  • the axis of the exposure cylinder being, of course, located inside the prism defined by the axes of the rollers.
  • the exposure cylinder (2) is held in position directly by the belt, pressing against the rollers (10) and (7).
  • This mode of construction of the exposure station is particularly interesting for dismantling and reassembling the rollers and the exposure cylinder. Indeed, it suffices to remove a roller by translation along its axis so that the exposure cylinder, the other rollers, and the belt can be removed easily.
  • the support plates (11) also have an opening (23) for access to the interior of the exposure cylinder (2), this opening (23) makes it possible to change a defective lamp (4) without dismantling the cylinder. exhibition (2).
  • the support plates (11) also comprise means for holding the exposure lamps (4) inside the exposure cylinder (2 ).
  • These means can be, as shown, formed by C-shaped structures (24) whose elasticity allows on the one hand to introduce the lamp (4) through the opening of the C and on the other hand to keep it in place by a spring effect.
  • C-shaped structures are located in the thickness of the support plate (11) and extend inside the opening (23).
  • the C structures can be obtained directly during the molding of the support plate (11), they can also be produced independently with a material different from that constituting the support plates and having good elastic properties and can be fixed, for example by screwing to the support plates.
  • the belt (6) can be of a width substantially greater than the useful width of the exposure station, it is not, of course, outside the scope of the invention, by using a plurality of belts arranged side by side according to the useful width of the exhibition station.
  • the belt (6) is made of a material, generally woven, usually used in diazocopy machines. Preferably the belt is elastic.
  • the support plates (11) admit a plane of symmetry S which contains the axis of the exposure cylinder (2).
  • This embodiment allows the same support plate to be used to support the ends of the rollers on each side of the exposure station.
  • the semi-cylindrical bearing surface (15) does not receive the end of a roller.
  • the exposure cylinder (2) being of large diameter, since it allows to house three lamps (4), four rollers (7, 8, 9, 10) are necessary to support the belt (6).
  • the rollers (8) and (9) can be replaced by a single roller whose end will be supported by the semi-cylindrical bearing (15).
  • FIG. 4 A device for reproducing originals comprising such an exposure station is shown in FIG. 4.
  • the device shown is of a modular embodiment. It comprises a module for supplying copy paper (46), a module (33) containing an exposure station, according to the invention, and a module (25) containing a development station.
  • the copy paper feed module (46) has substantially the shape of a rectangular box (29) provided with an opening, closed by a pivoting cover (26), for placing one or more rollers (27) copy paper in the housing (29).
  • the rollers (27) can rotate freely on themselves under the effect of the traction of the copy paper (28), and are for example, placed on a cradle (45) formed by two cylindrical rods parallel to the axis of the roller (27) and provided with means for immobilizing the roller (27) in translation.
  • the upper surface of the housing (29) has a copy paper exit slot (30) and a wire cutter (31).
  • the module (33) containing the exposure station comprises, in a housing (34), substantially parallelepiped, provided with an opening (35), an exposure station (1), object of the present invention, similar to that described above and shown in Figure 1, but which has only one lamp (4) inside the exposure cylinder (2).
  • the endless belt (6) envelops only three rollers (7, 10, 32), the ends of the roller (32) being supported by the semi-cylindrical bearing (15) of the support plates (11), the scopes (14) and (16) not being used.
  • the module (25) containing the development station consists of a housing (36), substantially parallelepipedal, provided with an opening (37) and essentially contains means for driving the copy and means for revealing the image. latent carried by the copy.
  • the means for driving the copy can be formed by a cylinder (38) animated by a rotational movement which cooperates with a fixed mat (39), stretched between two attachment zones, and which envelops part of the surface. of the cylinder (38), the copy moving under the effect of the rotation between the cylinder (38) and the mat (39).
  • the means for revealing the latent image carried by the copy can be constituted by a development chamber (40) swept by ammoniacal vapors intended to reveal the latent image, the area (41) of the carpet (39) located at the right of the chamber (40) is of course provided with openings allowing the passage of ammonia vapors up to the sensitive diazo layer of the copy.
  • the development station also comprises downstream of the development chamber (40), a chamber (42) for degassing the copy by suction, the zone (43) of the mat (39 ) located to the right of room (42) will of course be provided with openings.
  • the development station may also, upstream of the development chamber (40) include a zone (44) for preheating the copy.
  • the operator pulls the end of the copy paper (28) and places the original to be reproduced above it. It engages the assembly constituted by the original and the copy paper superimposed according to the arrow F1 between the endless belt (6) and the exposure cylinder (2). When moving this assembly around the exposure cylinder (2) the latent image is formed on the copy and the assembly leaves the exposure station in the vicinity of the roller (7).
  • the operator grasps the front edge of the copy, which leaves according to arrow F2, to separate it from the original, which leaves the exposure station according to arrow F3 and which is received on the upper surface of the case (29 ) of paper feed module. It engages the copy according to arrow F4 between the mat (39) and the cylinder (38) of the development module (25).
  • the reproduction apparatus has been shown in FIG. 4 with the module containing the development station placed above the module containing the exposure station, these two modules can of course be placed side by side .
  • the exposure station according to the invention is of a simplified construction and design which significantly reduce the costs of manufacturing and maintenance of a reproduction machine by diazocopie comprising such an exposure station.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Projection-Type Copiers In General (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
EP86420230A 1985-09-16 1986-09-11 Station d'exposition et appareil de reproduction d'originaux par diazocopie comportant ladite station Withdrawn EP0221823A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8513856 1985-09-16
FR8513856A FR2587507B1 (fr) 1985-09-16 1985-09-16 Station d'exposition et appareil de reproduction d'originaux par diazocopie comportant ladite station

Publications (1)

Publication Number Publication Date
EP0221823A1 true EP0221823A1 (fr) 1987-05-13

Family

ID=9323029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86420230A Withdrawn EP0221823A1 (fr) 1985-09-16 1986-09-11 Station d'exposition et appareil de reproduction d'originaux par diazocopie comportant ladite station

Country Status (9)

Country Link
EP (1) EP0221823A1 (da)
JP (1) JPS62115143A (da)
KR (1) KR870003405A (da)
AU (1) AU6263586A (da)
DK (1) DK440186A (da)
ES (1) ES2000896A6 (da)
FI (1) FI863710A7 (da)
FR (1) FR2587507B1 (da)
PT (1) PT83370A (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2015231494A1 (en) 2014-03-17 2016-09-01 MLS ACQ, Inc. D/B/A MAX Analyical Technologies Process and system for rapid sample analysis

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB768658A (en) * 1953-05-06 1957-02-20 Engelhard Ind Ltd Photographic contact printing and developing apparatus
US3229608A (en) * 1964-01-03 1966-01-18 Donald F Staub Printing and developing machine
US3272108A (en) * 1963-03-30 1966-09-13 Minolta Camera Kk Positive picture copier
FR2126020A5 (da) * 1971-02-19 1972-09-29 Dietzgen Corp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5428493Y2 (da) * 1975-07-31 1979-09-12

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB768658A (en) * 1953-05-06 1957-02-20 Engelhard Ind Ltd Photographic contact printing and developing apparatus
US3272108A (en) * 1963-03-30 1966-09-13 Minolta Camera Kk Positive picture copier
US3229608A (en) * 1964-01-03 1966-01-18 Donald F Staub Printing and developing machine
FR2126020A5 (da) * 1971-02-19 1972-09-29 Dietzgen Corp

Also Published As

Publication number Publication date
DK440186A (da) 1987-03-17
DK440186D0 (da) 1986-09-15
PT83370A (pt) 1987-05-06
AU6263586A (en) 1987-03-19
JPS62115143A (ja) 1987-05-26
FI863710A0 (fi) 1986-09-12
FR2587507A1 (fr) 1987-03-20
KR870003405A (ko) 1987-04-17
FI863710A7 (fi) 1987-03-17
ES2000896A6 (es) 1988-03-16
FR2587507B1 (fr) 1987-12-11

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