JPH0121052B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an automatic juxtaposed original feeding apparatus that selectively feeds stacked juxtaposed originals onto a contact glass of a copying machine to make copies.

(Prior Art) Conventionally, as shown in FIG.
A single document such as a handprint is placed on the 02 by the addressee, and simultaneously placed between the drive roller 104 protruding from the side housing 103, guide rollers 105, 106, 107, and tension roller 108. An endless film 109 on which a plurality of titles to be copied are written is stretched, and the part adjacent to the through hole 102 is made into a transparent part 110, and the endless film 109 is controlled by a driving roller 104 so that a predetermined title is printed on the transparent part 110. The entire copy machine is placed on the contact glass of the copying machine, and the endless film 109 is sequentially stopped for the original set in the through hole 102, while several types of copy processing are performed on the original. In the past, original documents in the through hole 102 were replaced by hand and the same copying process was performed to create a slip. However, it was troublesome to change the endless film, and the number of documents to be sequentially placed in the through hole increased. Therefore, there are disadvantages in that manual work is long and tiring, resulting in a decrease in copying speed.

Also, IBM Technical Disclosure Bulletin,
Vol.14 No.9, February1972, p2786 [B65H3/
44], the paper feed rollers 23, 25, and 27 are fixed to one shaft, and when the common clutch is turned on, all the rollers rotate, and when the common clutch is turned off, all the rollers stop rotating, and the paper feed starts. A device in which the seat is selected by vertically moving a seat holder is known.

Furthermore, as shown in Japanese Patent Application Laid-open No. 54-67440, there is also known an apparatus in which the sheet to be supplied is selected by switching an electric switch between a plurality of sheet blocks. However, when feeding a plurality of sheets of different numbers at the same time, there is a problem in that there is no means to automatically control the sheet feeding.

(Purpose) The present invention uses a sensor to automatically control the clutch of the document feeding device to stop the rotation of the paper feed roller and stop the paper feeding when there are no more documents, even if the number of documents placed side by side is different. The purpose is to

(Structure) In order to achieve the above-mentioned object, the present invention includes a paper feed roller that sequentially takes out the stacked originals one by one on the original table, and a plurality of stacked originals that has a stopper that stops the originals at a predetermined position. A plurality of automatic feed devices are installed in parallel, and each of the automatic feed devices has a sensor that detects when a document is missing, and each paper feed roller and clutch are mounted coaxially. The connection of each clutch is independently controlled based on the output of the
It is characterized by being able to stop.

Hereinafter, a detailed explanation will be given based on the illustrated embodiment. In FIG. 2, A is an embodiment of the present invention, which is designed to be removably placed on the contact glass B ₁ of a well-known copying machine B, and A ₁ , A ₂
are automatic document feeders arranged in parallel at predetermined intervals;
In between, there are two master units _A3 and _A4 , which contain endless films with multiple titles written on them, arranged side by side. Next, the stacked document automatic feeder will be explained.

In FIG. 3, reference numeral 1 denotes a document mounting table having guide frames 1a on both sides, on which documents such as handprints are piled up.
There is a through hole 1b in the middle part of the bottom of the auxiliary roller 2.
The upper part of the press roller 5 protrudes slightly, and a pressing roller 5 whose upper end is pivotally connected to the tip of an arm 4 whose upper end is pivotally connected to the frame 3 is placed on the upper part by its own weight. Reference numeral 6 denotes an actuator for detecting a document, whose middle part is pivotally mounted, and the right end protrudes above the through hole 1b when there is no document to be deposited.
The light shielding piece 6a at the left end is lowered to block light between the photo sensors 7. Original table 1
A paper feed roller 8 is disposed at the lower end of the paper feed roller 8, a separation roller 9 is disposed above the paper feed roller 8, a document guide 10 with a small friction coefficient is disposed in front of the paper feed roller 8, and a paper feed roller 8 is disposed at the upper part of the paper feed roller 8.
The tip of the document holding arm 11, which is rotatably supported on a shaft, is located near the tip of the document guide 10 to prevent the tip of the document from lifting up due to curling or the like. 12
is a clutch mechanism for driving the paper feed roller 8. 2
As shown in FIGS. 4 and 5, the paper feed roller 8 is attached to a rotating shaft 13 together with a spring clutch 14. Normally, the spring clutch 14 rotates the paper feeding roller 8 together with the rotating shaft 13, and the spring clutch Only when the solenoid 15 of the spring clutch 14 is turned on, the clutch lever 16 rotates and engages the sleeve 14a of the spring clutch 14, and the rotation shaft 1
It has become free for 3. Since its configuration is well known, the explanation will be omitted. The two sets of auxiliary rollers 2 are rotatably connected to a fixed shaft 17, and are interlocked with the paper feed roller 8 via a belt 16 so that they rotate as the paper feed roller 8 rotates. The separation roller 9 is attached to each paper feed roller 8 as shown in FIG.
The shaft 9a is pressed forward at an angle θ with respect to the perpendicular line of the center of the rotating shaft 13, and the shaft 9a fits into the long groove 18 of the substrate so that it can slide in the direction of the arrow.
A lever 1 is connected to the end of the shaft 9a via a one-way clutch.
9 is provided and pulled counterclockwise by a spring 20, and the upper slope 19a of the lever 19 is in contact with the stop pin 21. Therefore, when the document is fed between the paper feed roller 8 and the separation roller 9, the separation roller 9 moves slightly upward in the direction of the arrow in the long groove 18.
The upper slope 19a moves along the stop pin 21, and the lever 19 rotates slightly counterclockwise. At this time, the separation roller 9 does not rotate due to the one-way clutch. When the document passes, the separation roller 9 moves down by the thickness of the document, and at this time the lever 19 moves to the upper slope 1.
The separation roller 9 rotates clockwise due to the contact between the stop pin 21 and the separation roller 9, and the separation roller 9 also rotates clockwise as a unit due to the one-way clutch. Therefore, the separation roller 9 rotates slightly each time a document passes, and the outer periphery of the separation roller 9, which is made of a rubber elastic material, does not wear locally, and its durability is improved.

FIG. 7 shows another embodiment of the separation roller, in which the shaft 22a of the separation roller 22 is pivotally connected to the tip of a link 24 whose intermediate portion is pivotally connected by a pin 23, and the link 24 is pulled counterclockwise by a spring 25. Paper feed roller 8
is in pressure contact with. A lever 26 is provided on the shaft 22a of the separation roller 22 via a one-way clutch.
A diagonal groove 26a extending upward to the left is formed in the upper part thereof, into which a guide pin 27 is fitted. Therefore, when the document is fed between the paper feed roller 8 and the separation roller 22, the separation roller 22 rises slightly, and the lever 26 also rises together, causing the diagonal groove 26a to come into contact with the guide pin 27 and move slightly counterclockwise. Rotate to. At this time, the separation roller 22 does not rotate due to the one-way clutch. When the document passes, the separation roller 22 is lowered by the thickness of the document, and at this time the lever 26 is rotated clockwise, and the separation roller 22 is also rotated clockwise together by the one-way clutch. Therefore, the separation roller 22 rotates slightly each time a document passes.

FIG. 8 shows a device that simultaneously adjusts the widths of each pair of guide frames 1a of the two document placement tables 1 mentioned above.
9, and is engaged with a pinion 30 that is pivotally connected to a shaft fixed at the center of both document mounting tables 1. Therefore, when the width of the pair of guide frames 1a is adjusted by sliding one of the guide frames 1a of one of the two document placement tables 1, the width of the pair of guide frames 1a is adjusted.
The pair of guide frames 1a are also automatically adjusted to have similar widths. The aforementioned paper feed roller 8
Conveyance rollers 31 and 32 are disposed in front of the conveyance rollers 31 and 32, and a turn roller 33 is disposed in front of the conveyance rollers 31 and 32. A photo sensor 3 is disposed on the side of the conveyance path in front of the turn roller 33.
4, a jam detection sensor 36 is provided at the middle side of the guide plate 35 of the turn roller 33. An endless belt 37 is disposed following the turn roller 33, a drive roller 38 is disposed in front, and one end of a document stopper 39 is pivotally attached to the lower part of the tip. They are starting to touch each other. 40, 41, 42, 43 are paper ejection rollers, 44
is a paper ejection tray and 45 is a paper ejection guide.

Next, the master unit shown in FIGS. 9 to 13 will be explained. 50 is a box-shaped case, and a transparent plate 51 is fixed to the bottom. 52
is an endless master film, on the inner surface of which various titles 52a corresponding to a plurality of types of slips are printed sequentially in the rotating direction, transparent parts 52b are formed in the parts of the slip where variable information is required, and the other parts are white. It is printed. Guide rollers 53, 54, 55, and 56 are arranged at the four internal corners of the case 50.
Master film 5 stretched on the guide roller
2, the drive shaft 57 is fitted into the vertical guide groove 75a of the side plate 75 from above and held in place by the split pin 49, and the pressure roller 58 is fitted into the horizontal guide groove 75b of the side plate 75. The guide roller 53 is fixed in place with screws and presses against the master film 52, and a tension spring 59 is tensioned on the guide roller 53. 60 is a motor fixed to the side plate 75, a gear 61 on the motor output shaft and a gear 62 on the drive shaft 57 mesh with each other, and a brake drum 63 is fixed on the motor shaft protruding on the opposite side from the motor output shaft. A brake band 64 is stretched around the outer periphery with a spring 65. A stopper angle 66 is provided near the guide roller 55, and the end surface of the master film 52 comes into contact with it to prevent it from bending inward. A photo sensor 67 is disposed downstream thereof, through which a mark 52c for determining a stop position formed on one end of the master film 52 passes. The mark 52c has two or three lengths, and determines the home position (start position) and the reset position for skipping unnecessary titles 52a. Detection of this reset position by the photo sensor 67 can be arbitrarily selected using a changeover switch or the like. Reference numeral 70 is a display sheet displaying fluctuation information, and a thin display film such as white vinyl chloride is laminated on the information writing side of a rectangular substrate made of magnetic rubber, and is inserted into the upper insertion hole 50 of the case 50.
d, descends along the guide groove 71, is bent horizontally along the lower curved guide 72, and is located above the master film 52 between the guide rollers 55 and 56. At the top of this horizontally bent display sheet, a holding plate 73 made of magnetic material is attached to a side plate 75.
Since the horizontal portion of the display sheet 70 is attracted to the holding plate 73 by its magnetic force, the horizontal portion of the display sheet 70 is prevented from coming into contact with the master film 52.
74 is a connector for electrical system connection.

Next, the effect will be explained. When the copying machine B is powered on, the master films 52 of the two unit masters A ₃ and A ₄ stop at the home position, and the first title 52 a is placed on the transparent plate 5 of the case 50 .
1 is located at the top. Further, the solenoid 15 of the clutch mechanism 12 is turned on, and the paper feed roller 8 and the rotating shaft 13 are free. On the other hand, various handprints are piled up one after another from below on the document mounting tables 1 of the two sets of automatic document feeders A ₁ and A ₂ . or,
The display sheet 70 containing the fluctuation information is displayed in the case 50.
Insert it through the insertion hole 50d.

Next, when the print button of copying machine B is turned on, the motors (not shown) of the automatic document feeders A ₁ and A ₂ rotate, and the solenoid 15 is turned off at a predetermined timing, so that the paper feed roller 8 The auxiliary roller 2 rotates, and the auxiliary roller 2 reliably feeds the lowest document between the paper feed roller 8 and the separation roller 9. The separation roller 9 rotates slightly each time the original passes through this gap. Approximately 1/4 rotation for 50 originals. Next, when the tip is bitten by the conveyance rollers 31 and 32 and reaches the position of the photo sensor 34, the solenoid 15 is activated by the detection signal from the photo sensor.
Since this is set to ON, feeding of the next original will be stopped. Since everything other than the feed roller 8 and the auxiliary roller 2 rotates in conjunction with the motor, the original is then conveyed by the turn roller 33 and the endless belt 37, and placed on the contact glass B ₁ of the copying machine B with the original display side facing down. When the document is placed and comes in front of the stopper 39, the motor is turned off, and in substantially the same way, the stopper 39 comes into contact with the endless belt 37 by turning on a solenoid (not shown), and the document hits the stopper 39 and stops. After that, the endless belt 37 continues to move for a short time due to the inertia of the motor, during which time the skew of the document is corrected. Next, copy machine B
exposure is started. When the first exposure is completed, the master film 52 is advanced to the next title 52a and stopped, and exposure is performed. In this way, various titles 52a are copied to a specific document, and several types of necessary slips are automatically copied.
During this time, when copying a slip that requires fluctuation information, the master film 52 is placed on the horizontal portion of the display sheet 70.
The transparent part 52b of the master film 52 is positioned to copy the fluctuation information written on the display sheet 70, and when copying a slip that does not require fluctuation information, the white part of the master film 52 is located in the horizontal part of the display sheet 70, and the fluctuation information is copied. is set not to be copied. At this time, the master film 52 does not come into contact with the horizontal portion of the display sheet 70. When the desired number of copies are completed, the master film 52 is reset and returns to the home position, the solenoid of the stopper 39 is de-energized and released, the motor is turned on, and the original is ejected by the ejecting rollers 40, 41, 42, and 43. Guide 4
5 and is discharged onto the paper discharge tray 44. The solenoid 15 is turned off in parallel with paper ejection, and the above operation is repeated until there are no more originals left.

As shown in Fig. 14, the copies are reduced so that two sheets can fit into A5 size, and since there is a perforation in the center, this can be cut out to make A6 size, which is the slip size.

When there is no original on the original platen 1, the upper end of the original detection actuator rotates upward, shielding the photo sensor 7 from light and detecting that there is no original.
After the final document has been ejected, the power is turned off and the entire operation is stopped.

In addition, if you are using two sets and only one side runs out of originals, the solenoid will keep the clutch mechanism on that side turned on due to detection by the actuator, and the paper feed roller will not rotate, and the clutch mechanism on the other side will not rotate. Only the paper feed roller rotates and the predetermined operation is repeated. It is desirable to set the rotation time of the paper feed roller to the minimum necessary time from the viewpoint of improving durability and preventing continuous feeding of the next document. That's it. Therefore, the time it takes for the document to reach the conveyance rollers varies depending on the type of document, curl, etc., so if you set the rotation time of the feed roller uniformly, the document may not reach the conveyance rollers and may fail to feed, or conversely, the document may not reach the conveyance rollers, resulting in poor paper feeding or small-sized documents. In the case of originals, problems with continuous paper feeding occur.

(Effects) According to the present invention, a plurality of stacked document automatic feeders are provided on the document table, which includes a paper feed roller that sequentially takes out the stacked documents one by one, and which has a stopper that stops the documents at a predetermined position. A plurality of stacked document automatic feeding devices installed in parallel each have a sensor that detects when a document is missing, each of which has a paper feed roller and a clutch installed coaxially, and feeds a document based on the output of each sensor. Since the connection of each clutch can be controlled independently, and each paper feed roller can be rotated and stopped independently, even if the number of documents placed side by side is different, when the document runs out, the sensor will automatically start the document feed roller. This has the practical effect of being able to stop the rotation of the paper feeding roller by controlling the clutch of the feeding device.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional device, and FIG. 2 is a perspective view of an embodiment of the device of the present invention installed in a copying machine.
Figure 3 is a partially cutaway front view of the stacked document automatic feeder shown in Figure 2, Figure 4 is an enlarged front sectional view of the paper feed roller and auxiliary roller part of Figure 3, and Figure 5 is the paper feed roller part. 6 is a front view of the first embodiment of the separation roller section, FIG. 7 is a front view of the second embodiment of the separation roller section, and FIG. 8 is a plan view of the document placement drive mechanism. Figure 9 is a front sectional view of the master unit, Figure 10 is a side view of Figure 9, Figure 11 is a perspective view of the endless film used in the master unit, and Figure 12 is a perspective view of the endless film used in the master unit.
13 is a front view of the display sheet, FIG. 13 is a perspective view of the end of the drive shaft of the endless film, and FIG. 14 is a plan view of copy paper copied by the apparatus of the present invention. A ₁ , A ₂ ... stacked document automatic feeder, 1 ... document mounting table, 8 ... paper feed roller, 13 ... rotary shaft,
14...Spring clutch, 15...Solenoid.

Claims (1)

[Claims] 1 A paper feed roller that takes out the stacked originals one by one is arranged on the original table, and a plurality of automatic stacked original feeding devices each having a stopper that stops the originals at a predetermined position are arranged in parallel, Each automatic document feeder has a sensor that detects when a document is missing, and each paper feed roller and clutch are mounted on the same axis, and each clutch is independently connected or disconnected based on the output of each sensor. This is an automatic juxtaposition document feeding device which is capable of independently rotating and stopping each paper feed roller under control.