JPH01281236A - Original transporting device - Google Patents

Abstract

PURPOSE:To improve the straight advance performance of an original by supporting the belt means of a transport means which endlessly travels between a paper feeding means and a paper discharge means by a roller means having the large diameters at the both edge than that of the center part. CONSTITUTION:When an original is inserted from an original insertion guide 7, said insertion is detected by an original actuator 10 and an inlet switch 11, and then feed rollers 12 and 13 collide the original onto aligning rollers 14 and 15 and arrange the original, and the original is transported on an original board 5 by a transport belt 16 laid between belt rollers 17 and 18 and a pressing roller 19, and collides with a stopper 20 and stops. After the copying operation, the stopper 20 retreats, and the original is discharged by the discharging rollers 21 and 22. In this case, the belt roller 17 on the paper feeding side is made of rubber, etc., and a large diameter part 65 is formed in the vicinity of the both edge parts, and since the roller 18 is a smooth roller made of aluminum, the original is positively pressed at the both edges of the transport belt 16, and the transport force is increased, and the straight advance performance is maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a document conveying device that is applied to, for example, a device that automatically sets a document on the document table of a copying machine.

[Technical Background of the Invention and Problems Therewith] Conventionally, the above-mentioned type of document conveying device is provided on the document table of a copying machine so as to be openable and closable or to be detachable, and includes a feeding means for feeding the supplied document; Aligning means for arranging and sending the originals fed by the feeding means, a conveying means for conveying the originals aligned by the aligning means to the document table, and a discharge means for discharging the originals conveyed by the conveying means. Equipped with ejection means, etc. However, when the resultant force of the document conveyance force by the conveyance means acts on the center, if the distribution of the resistance force acting on the document becomes uneven, this will generate a moment that rotates the document, and the direction of travel of the document will change. However, there is a problem in that the straight forward conveyance of the document is good, but the ability to stop the document at a predetermined position is poor. This problem is substantially the same even if the conveying force of the conveying means is uniformly distributed over the entire width.

[Object of the Invention] The present invention has been made based on the above-mentioned circumstances, and its purpose is to improve the straight-line conveyance of a document, and to
An object of the present invention is to provide a document conveying device that can improve the performance of conveying a document to a predetermined position and stopping the document.

[Summary of the Invention] In order to achieve the above object, the present invention provides a paper feeding means for feeding a document, a conveying means for conveying the document fed from the paper feeding means to a desired position, and a conveying means for conveying the document fed from the sheet feeding means to a desired position. a sheet discharging means for discharging the document conveyed to the desired position by the means, and the conveying means includes a belt means running endlessly between the sheet feeding means and the sheet discharging means; The apparatus is characterized in that it includes a roller means that is supported and run on the paper feeding means side and whose both ends have a larger diameter than the other parts.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 in Fig. 1 is a copying machine (image forming device).The copying machine 1 has a paper feed cassette 2 and a manual paper feed guide 3 on the lower right side, a copy paper output tray 4 on the lower left side, and a copy paper output tray 4 on the upper left side. There is a document table 5 in the center, an operation panel 6 on the front side of the top, a document insertion guide 7 on the right side of the top, and a document output tray 8 on the left side of the top.
are provided for each.

Further, on the document table 5, a document conveyance device 9 is provided which can be opened and closed to automatically set the document a on the document table 5.
As shown in FIG. 2, in this document conveying device 9, when a document a is inserted from the document insertion guide 7, the document detection actuator 10 and the artificial reed switch 11 detect the insertion of the document a. Then, based on this detection, the document a is aligned by being brought against the aligning rollers 14 and 15 by the feed rollers 12 and 13, and then sent to the conveyor belt 16 by the aligning rollers 14 and 15. The conveyor belt 16 is wound endlessly between belt rollers 17 and 18 and presser rollers 19, 19, and 19, and runs on the document table 5. Then, the document a sent by the aligning rollers 14 and 15 is conveyed onto the document table 5 by the conveyor belt 16, and is stopped by the stopper 20 and stopped at a predetermined position on the document table 5. Then, after the copying operation has been performed, the stopper 20 is retracted, and the document a is carried out from the document table 5 by the conveyor belt 16, and then transferred to the discharge roller 2.
1 and 22, the document is discharged onto the document discharge tray 8, and this discharge is confirmed by the document discharge detection actuator 23 and the exit reed switch 24. In addition,
25 and 26 are vapor guides.

Further, the drive system of the document conveying device 9 is configured as shown in FIG. That is, 27 is a drive motor capable of forward and reverse rotation, and a rotation shaft 28 of this drive motor 27 has a first
and the second gear 29, 30 are fixed. The two first gears mesh with a third gear 32 rotatably attached to the heel 31 of the upper aligning roller 14, and this third gear 32 is fixed to the shaft 33 of the upper feed roller 12. It meshes with a fourth gear 35 that incorporates a one-way clutch 34. The fourth gear 35 has a pulse disk 36
is attached so that the amount of rotation of the drive motor 27 is detected by a pulse detector 37 as the number of pulses. Note that since the pulse disk 36 is not connected to the one-way clutch 34, it rotates together with the fourth gear 35. On the other hand, the second gear 30 is connected to the upper aligning roller 1.
A fifth gear 39 is fixed to the support 31 of No. 4 and has a built-in one-way clutch 38, and a sixth gear 39 is fixed to the shaft 40 of the belt roller 17 on the sheet feeding side and has a built-in one-way clutch 41.
It meshes with the gear 42 of.

Note that the one-way clutches 34, 38, and 41 are well-known ones in which a roller is built into a metal ring shell. In addition, the foot 43 of the belt roller 18 on the paper ejection side and the upper paper ejection roller 2
Pulleys 45 and 46 are fixed to the shaft 44 of 1, and a transmission belt 47 is stretched between these pulleys 45 and 46. As shown in FIG. 4, when the drive motor 27 reverses, the driving force is transmitted to the upper feed roller 12, and when the drive motor 27 rotates forward, the upper aligning roller 14, the conveyor belt 16, and the upper The driving force is transmitted to the paper discharge roller 21. The pulse disk 36 rotates both when the drive motor 27 rotates in the forward direction and in the reverse direction, and its pulses are supplied to a motor control printed wiring board 48 (forward and reverse drive circuit). The motor control printed wiring board 48 is supplied with power and logic signals from the copying machine 1, and the output of the motor control printed wiring board 48 is supplied to the drive motor 27.

Further, as shown in FIG.
, and a stopper unit 52 (shown in FIG. 10).

The paper feeding unit 49 is constructed as shown in FIG. That is, 53 is a frame, and a frame 54 is attached to the rear side of this frame 53. These frames 53, 54 have upper feed rollers 12
The upper aligning roller 14 is connected to the bushings 55 and E-rings 56 on the front and rear sides.
It is rotatably mounted via... Further, the frames 53 and 54 are provided with lower aligning rollers 15.
is mounted on the floaton side and the rear side via bushings 57.57 and springs 58.58 so as to be freely rotatable and biased upward, and rotates while being pressed against the above-mentioned upper aligning roller 14. There is. Also,
A paper guide 25 for guiding the upper surface of the document a is arranged between the upper and lower aligning rollers 14 and 15, and is supported by a frame 53 and the shaft 31 of the upper aligning roller 14. Further, a paper guide 26 is disposed below the paper guide 25 for guiding the lower surface of the original document a, and the paper guide 26 is rotatably supported on the frame 53, 54 by the stay 59 on the paper feed side and on the paper discharge side. It is urged to rotate upward by a spring 60°60. Further, the lower feed roller 13 is rotatably supported by the paper guide 26, and rotates while being pressed against the upper feed roller 12 by rotational bias of the paper guide 26. Here, the upper feed roller (slip roller) 12 is made of a white rubber material, and the lower feed roller 13 is made of Delrin (trade name). Further, the upper aligning roller 14 is made of a rubber material, and the lower aligning roller 15 is made of metal.

Further, the frame 53 includes a document detection actuator 1.
0 and a reed switch 11 are attached to the frame 54, and a drive motor 27 is attached to the frame 54. As described above, the first and second gears 29° 30 are connected to the rotating shaft 28 of the drive motor 27, and the shaft 33 of the feed roller 12 is
A fourth gear 35 and a pulse disk 36 are connected to the shaft 31 of the aligning roller 14, and third and fifth gears 32°3 are connected to the shaft 31 of the aligning roller 14.
9 are attached to each. In addition, the above frame 5
3 is screwed to the frame 61 of the transport unit 50 via a connecting frame 62 on the front side and via a connecting frame 63 on the rear side.

As shown in FIG. 7, in the conveying unit 50, a belt roller 17 on the sheet feeding side is rotatably supported between a rear side of a frame 61 and a front side connecting frame 62. By releasing the screw fixing, the paper feeding unit 49 and the conveying unit 50 are separated, and the front side of the belt roller 17 becomes free, so that the conveying belt 16 can be removed from the belt roller 17.

Further, as shown in FIG. 8, a belt roller 18 on the paper discharge side is rotatably supported on the frame 61 via a swing frame 64, which will be described later. The conveyor belt 16 is placed between the belt roller 17 of
are hung endlessly. The belt roller 17 on the paper feeding side is made of a rubber material, and has large diameter portions 65, 65 that are larger in diameter than other portions near both ends. Furthermore, the sixth gear 42 is attached to the rear side of the shaft 40 of the belt roller 17 as described above. On the other hand, the belt roller 18 on the paper ejection side is a smooth roller made of aluminum, and is elastically retracted to the road blade by a swing frame 64, 64 and a spring 66, 66, which are swingably attached to the frame 61. I'm starting to get it. A pulley 45 is attached to the front side of the shaft 43 of the belt roller 18 , and a transmission belt 47 for transmitting driving force to the paper ejection roller 21 is wrapped around the pulley 45 . Furthermore, a presser roller 19 made of Delrin is attached to the frame 61 via a leaf spring 67 to press the conveyor belt 16 against the document table 5. Furthermore, a pressing portion 68 is provided at the center of the paper ejection side of the frame 61 and is extruded from the lower part.
6 is guided while being pressed toward the stopper 20, so that no gap is created between the stopper 20 and the conveyor belt 16. Further, a solenoid 69 for driving the stopper 20 is provided on the paper discharge side and rear side of the frame 61.
However, there is a magnetic catch 70.70 (
Shown in FIGS. 7 and 8. ) is installed.

The paper discharge unit 51 is constructed as shown in FIG. That is, the frame 6 of the transport unit 50
A frame 71 is screwed to the paper ejection side of the printer 1, and paper ejection rollers 21 and 22 are rotatably attached to the frame 71 on the front side and the rear side. The upper paper discharge roller 21 is made of a rubber material, and a pulley 46 is attached to the front side of its shaft 44, and the transmission belt 47 is wrapped around the pulley 46. The lower paper ejecting roller 22 is made of metal and Delrin, and is mounted on the front and rear sides via bushings 72, 72 and springs 73, 73 so as to be freely rotatable and biased upward. It is adapted to rotate while being pressed against the upper paper ejection roller 21. Further, the frame 71 includes a document discharge detection actuator 23 and an exit reed switch 2.
4 and a paper guide 74 that guides the upper surface of the document a is attached. Furthermore, by releasing the screw fixation between the frame 71 and the frame 61 of the transport unit 50, the transport unit 50 and the paper ejection unit 51 can be separated, and by further removing the swing frame 64 on the front side, the paper ejection side can be separated. The front side of the belt roller 18 is free so that the conveyor belt 16 can be removed from the belt roller 18.

The stopper unit 52, as shown in FIG.
A stopper 20 for stopping the document a at a predetermined position on the document table 5 is attached to a scale section at the left end of the document table 5. That is, both the front side and the rear side of the stopper 20 are rotatably supported by hinges 75, 75.

Under normal conditions, the temporary springs 76 and 76 push the document a upward, causing the stopper 77 to protrude from the document table 5 and position the document a. Further, when the paper is ejected, the solenoid 69 pushes the paper downward and retreats from the document table 5.

The document conveying device 9 in which each unit is configured in this way is
As shown in FIG. 11, frames 78 and 79 are attached to the rear side of the frame 61 of the transport unit 50, and these frames 78 and 79 are supported on the upper part of the copying machine 1 via hinges 80 and 80. This allows it to be opened and closed freely.

Further, a printed wiring board (forward/reverse drive circuit) 48 for controlling the drive motor 27 is attached to the frame 78, and is supplied with power and logic signals from the copying machine 1 via a connector 81 and the like. ing.

Next, the operation of the document conveying device 9 will be explained. In FIGS. 2 and 12, first, when a document a is guided by the document insertion guide 7 and pressed against the document feed rollers 12 and 13, the document a is inserted into the document feed roller 12 and the document detection actuator 10. Switch 82 detects document a. This signal is sent to the main controller 83 of the copying machine 1. When the main controller 83 receives this signal, it starts a preparation operation for starting the copying operation of the copying machine 1. After a predetermined period of time, the main controller 83 sends a reverse rotation signal to the forward/reverse drive circuit 48 of the document conveying device 9. The forward/reverse rotation drive circuit 48 rotates the drive motor 27 in the reverse direction based on this signal. This drive motor 2
7 rotates only the document feed rollers 12 and 13, and the document a is fed until it hits the aligning rollers 14 and 15, and is aligned. At this time, the force of the lower feed roller 13 to push the upper feed roller 12 is set weak, and the upper feed roller 12 slips on the document a and causes friction, but the upper feed roller 12 is made of white rubber. Therefore, even if the document a is rubbed, it will not get dirty. Note that it is more effective if the lower feed roller 13 is made of white rubber.

Next, the main controller 63 of the copying machine 1 controls the pulse disk 3.
When the rotation amount detecting device 84 consisting of a pulse detector 6 and a pulse detector 37 detects that the drive motor 27 has rotated by a predetermined amount, the forward/reverse rotation control circuit 48 stops the reverse rotation of the drive motor 27 and causes the drive motor 27 to rotate forward after a predetermined period of time. send a signal to. This results in
The drive motor 27 changes from a reverse rotation state to a normal rotation state, and the aligning rollers 14 and 15, the conveyance belt 16, and the paper ejection rollers 21 and 22 rotate. Then, the document a is sent onto the document table 5 by the aligning rollers 14 and 15 and the conveyance belt 16, and is stopped with the leading end pressed against the stopper 20. When the drive motor 27 rotates forward by a predetermined amount of rotation, the main controller 83 issues a stop signal to the forward/reverse drive circuit 48, thereby stopping the drive motor 27.
The setting of document a is completed. Note that it is also possible to use, for example, a white, soft, spongy roller instead of the conveyor belt 16.

Here, the conveyor belt 16 has a polyester core coated with polyurethane to make the surface white, and
The outer surface is textured to obtain frictional force, and the conveyance force is generated by the weight of the conveyor belt 16 and a leaf spring 67 that pushes the presser rollers 19 provided inside the conveyor belt 16.
It is obtained from the elastic force of... In addition, the presser roller 19
The total force pressing down on the conveyor belt 16 is approximately 100g.
It becomes.

Further, the document a is conveyed with reference to the center, and the stopper 20
Document position and presser roller 19 when document a hits
The relationship between the positions of ... is as shown in FIG.

The presser rollers 19... hold the document a via the conveyor belt 16.
In order to further ensure this, it is effective to forcibly wave a part of the conveyor belt 16, as shown in FIGS. 13 and 14.
As shown in the figure, the belt roller 17 on the sheet feeding side is provided with large diameter portions 65, 65 approximately symmetrically with respect to the center.

That is, for example, the outer diameter of the large diameter portion 65 is 25°6I with respect to the standard outer diameter 25III11 of the paper feed side belt roller 17.
This large diameter portion 65 creates bulges 85 at both ends of the conveyor belt 16, which more actively presses both ends of the document a and increases the conveyance force. In this case, the document a can be conveyed more smoothly if the force component for conveying the document a is distributed at both ends rather than distributed near the center. That is, for example, as shown in FIG. 15, when the resultant force F of the conveyance force acts on the center, if the distribution of the resistance force acting on the document a becomes uneven, this will generate a moment that rotates the document a. The traveling direction A of document a is A" or A.

It shifts. This is substantially the same even if the conveying force is uniformly distributed over the entire width. However, in this embodiment, as shown in FIG. 16, the conveying force is intentionally distributed at both ends away from the center, so that the influence of the moment caused by the resistive force is unlikely to appear. Therefore, the document a is allowed to advance straighter than in the case where the conveying force is distributed in the center or uniformly across the entire width, and the performance of conveying the document a to a predetermined position and stopping it is improved. FIG. 17 shows the waves of the bulges 85 and 85 appearing on the surface of the conveyor belt 16 viewed from below, and since the belt roller 18 on the paper discharge side is smooth, the conveyor belt 16 is on the paper discharge side. becomes flat,
There is no gap between the stopper 20 and the stopper 20, and there is no adverse effect.

Note that although the document a is conveyed based on the center reference, if the conveyance reference is different, it is better to change the distribution of the large diameter portions 65 and 66 as appropriate.

Further, as shown in FIGS. 13 and 14, a part of the frame 61 that supports the conveyance unit 50 is provided with a pressing part 68 that pushes the conveyor belt 16 downward. Since the document is pressed and guided reliably, no gap is created between the stopper 20 and the conveyor belt 16 through which the document a can pass. That is, for example, although the distance between the frame 61 and the original platen 5 is 3■ over the entire area, the pressing is only at the part 6.
8 has 1.5■, and only this is a gap of 1.5m+a, and if the belt thickness of 0.5nun is subtracted, the gap is 1mm. As a result, even if the conveyor belt 16 vibrates in waves, the gap will not become too large and the function of the stopper 20 will not be impaired. Although the pressing portion 68 is provided at the center, for example, a plurality of pressing portions may be provided at any desired location. Furthermore, even if the conveyor belt 16 is placed at a location other than the vicinity of the stopper 20, the
It is effective in suppressing vibration and waving. Also, instead of the pressing part 68, as shown in FIG.
If the rollers 87 are rotatably attached to the rollers 87 to restrain the conveyor belt 16, friction with the conveyor belt 15 is reduced.
more effective. In this case, the presser roller 19 floats due to the leaf spring 67, and therefore cannot reliably suppress the conveyor belt 16.

Next, when the setting of the document a is completed as described above, a copying operation is performed, and when the copying operation is completed, the document ejecting operation is performed as follows. That is, the solenoid 69 is driven, thereby the stopper 20 is retracted from the document table 5, and the conveyance of the document a becomes "i1". After a predetermined time, the drive motor 27 starts normal rotation, and the conveyor belt 16 rotate,
As a result, the document a is conveyed beyond the stopper 20, and is then discharged onto the document discharge tray 8 by discharge rollers 21 and 22. Then, when the drive motor 27 rotates by a predetermined rotation amount i, the solenoid 69 becomes non-driven, and the stopper 20 returns to its original position. Furthermore, when the drive motor 27 has rotated a predetermined amount of rotation, the drive motor 27 is stopped, and the document a
The discharge is completed. Note that the exit switch 88 is for detecting a paper jam, and determines the presence or absence of the document a at a predetermined timing to detect the presence or absence of a paper jam.

In the document conveying device 9 as described above, the drive motor 27, solenoid 69, etc. are all housed within the device, so when installing it to the copying machine 1, the copying machine 1
Only one connector 81. is required for electrical connection with the copying machine 1, and there is no need to attach any additional electrical parts to the copying machine 1. Additionally, parts additionally attached to the copying machine 1 include a stopper unit 5.
2. The accent protection cover, magnets, etc., and the installation of all driving parts is completed by installing the document conveying device 9. Therefore, the document conveying device 9 can be easily added to the copying machine 1 later as an option.

Also, the feed roller 12 is driven by one drive motor 27.
．． 13, aligning rollers 14, 15, conveyor belt 1
6 and the discharge rollers 21 and 22, the weight can be reduced and handling is easy.

Furthermore, if the conveyor belt 16 becomes dirty or damaged, the h1 conveyor belt 16 will need to be replaced.
, the conveying unit 50, and the paper ejecting unit 51 are connected by screws and a connecting frame 62, and when they are removed, each unit becomes separate, and at the same time the belt rollers 17, 1
8 becomes free, the conveyor belt 16 can be easily attached and detached.

Next, a case where the document transport device 9 is not used will be explained.
Control is such that when eight print switches (shown in FIG. 1) of the copying machine 1 are pressed, the document conveying device 9 is not driven and only the copying operation is performed. That is, the main controller 83 is provided with a microcomputer, and its RAM is provided with an A flag for storing the operation mode of the previous copying operation as well as various control flags. As shown in FIG. 19, this person flag is set to "0" when a copying operation using the document transport device 9 is performed, and to "1" when a copying operation is performed without using the document transport device 9. be done. Here, as shown in FIG. 20, the document conveyance device 9 is installed so as to be openable and closable relative to the copying machine 1, and is normally located at the solid line position so that the user can directly set the document a on the document table 5. It can be opened to the dashed line position. Whether the document feeder 16 is closed or open is detected by the position switch 90 and sent to the main controller 83 .

Then, when the document conveyance device 9 is open, the A flag is reset to "0". In other words, the A flag is "1"
The state indicates that the document conveying device 9 remains closed after a copying operation that does not use the document conveying device 9 is performed. At this time, the document a from the previous copy still remains on the document table 5. Copying operations that do not use the document transport device 9 and are started by pressing the Prince switch 89 are accepted regardless of the A flag, but copy operations using the document transport device 9 that are started by inserting the document a into the document transport device 9 are accepted. This copying operation cannot be accepted when the document conveyance device 9 is open and when the A flag is "1". As a result, when a thick original fia such as a book remains on the document table 5, the operation of the document conveyance device 9 is prohibited because the document conveyance device 9 is open. Further, when the thin document a remains on the document table 5, the A flag is set to "1", so the operation of the document conveying device 9 is prohibited. For example, if a document a is inserted into the document feeder 9 after a copying operation that does not use the document feeder 9 and before the document a is removed, a paper jam is displayed and no copies are accepted.

Next, a procedure for attaching the document conveying device 9 to the copying machine 1 will be explained. First, as shown in FIG. 21, the document presser 91 is pulled upward and removed from the copying machine 1. Next, the scale 92 and glass holder 93 that hold down the document table (glass plate) 5 are removed. Next, carefully remove the document table 5 and temporarily store it on a flat place. Next, Cushion 94
Remove. Further, the seal 96 attached to the cover 95 is removed, and the original table 97 and blind 98 are also removed.

Next, as shown in FIG. 22, tap screws 100, 100° 100.100 (
Only one is shown. ), slide the document transport device 9 in the direction of the arrow, and tighten the screws. Next, as shown in FIG. 22, the magnet 102 is attached to the square groove 101 on the back surface of the top cover 95 by peeling off the protective paper. Then,
Remove the cover mounting screws 103 as shown in FIG. 24, and remove the cover 104 shown in FIG. 25.

Next, insert the connector 81 as shown in FIG.
0, the angle regulating plate 105 shown in FIG. 27 is attached as shown in FIGS. 28 and 29.

Next, as shown in FIG. 30, the document conveying device 9 is opened, and the first blinds 106 shown in FIG. 31 are fitted into the blind holes 107 in the order of arrows ■■ as shown in FIG. 32. Next, the document conveying device 9 is closed, and the second blind 108 shown in FIG. 33 is moved as shown in FIG. 34.
Insert in the order of the arrows ■■. Then, the cover 104 is attached.

Next, as shown in FIG. 35, stopper hinges 75, 75 are attached to the pins 109, 109 at both ends of the stopper 20 at the same hole positions as the scale. Next, the document table (glass plate) 5 is attached as shown in FIGS. 36 and 37. At this time, the gap S between the stopper 20 and the document table 5
is set to 0.3 to 0.5■. Further, a glass presser 93 is attached to the same hole position as shown in FIG. 38. Next, the screw 109 of the original table 97 is attached to the position (screw attachment hole) where the sticker 96 was pasted. Next, document insertion guide 7
screw to the same position as the original table 97. Next, as shown in FIGS. 39 and 40, an exit seal 113 made of Mylar 111 coated with an adhesive 112 is applied to the window 110 on the paper ejection side of the stopper 20, and the document ejection tray 8 is fitted into the window 110. It's crowded.

Next, adjustment of the document conveyance device 9 will be explained.

First, the height adjustment is performed by opening the cover 11 as shown in FIG.
4, 115, and close the document conveying device 9. Then,
As shown in FIG. 42, loosen the screws 116, hold the frame 119, and tighten only the screws 116. Next, hold down the frame 120 portion, tighten the screws 118, and then tighten the screws 117. At this time, as shown in FIG. 43, it is confirmed that the spacers 121 and 122 are in contact with the document table 5. Next, as shown in FIGS. 44 and 45, loosen the screws 124 of the bracket 123 of the magnetic catch 70, 70, and remove the frame 1.
25, 126, and tighten the screws 124 with the magnetic catch 70 in contact with the screw 127 and the spacers 122, 122 or document table 5.

Next, to adjust the position of the tip of the stopper 20, as shown in FIG. 46, prepare an original ia by drawing a parallel line on the tip. Then, two to three copies of the original document a are made by hitting the stopper 20 without any gaps. When the copy paper P is in the state shown in FIG. 47(1), the front holder 128 and the rear holder 129 are moved in the R direction (rightward) by the amount of deviation in FIG. 48. When the copy paper P is in the state shown in FIG. 47(2), the holders 128 and 129 are moved in the L direction (leftward) by the amount of deviation. When the copy paper P is in the state shown in FIG. 47 (3), move the holder 129 in the R direction by Xff11m,
Or move the holder 128 in the L direction.

When the copy paper P is in the state shown in FIG. 47 (4), Xl0ff
Move the holder 129 in the L direction by i, or move the holder 12
Move 8 in the R direction.

Next, adjust the position of the stopper solenoid 20 by removing the covers 114 and 115 (see Figure 41), setting the document feeder 9 to check mode, and using thick paper document a to check whether document a comes out smoothly. Check whether If the document a does not come out (if the six solenoids do not pull), check whether the width y of the solenoid actuator 130 is within the width X of the groove 131 of the holder 133, as shown in FIGS. 49 and 50. do. If not, loosen the screws 132 shown in Fig. 51 and adjust. The width y of the actuator 130 is the width y of the holder 133
If it does not pull even if it is within the width of the groove, press 13
3. Loosen and tighten at the position where the stopper 20 is pulled. Finally, attach the covers 114° and 115.

Next, to center the document a, first set the document a with a line drawn in the center on the document insertion guide 7 and copy it.

Then, as shown in FIG. 52, the line copy of the document a is on the front side (F side)
If the original insertion guide 7 is X1lffl closer to , as shown in FIG. 53, the document insertion guide 7 is moved toward the front side by x/'2a11. Conversely, the rear side (
If the document insertion guide 7 is
Move it to the rear by 2+ug.

Next, to adjust the position of the original platen (glass plate) 5 and the stopper 20, first loosen the screws that hold the glass presser 93, and then use a feeler gauge or the like to adjust the position between the stopper 20 and the original. The gap S with the stand 5 is 0.3~0.5m
Adjust to 1i. In this case, when the stopper 20 is lowered, the stopper 20 and the document table 5 should not be separated from each other. Then, tighten the screw of the glass presser 93.

Next, to replace the conveyor belt 16, first, as shown in FIG. 55, the covers 114 and 115 are removed, and then, as shown in FIG. 56, the paper ejection unit 51 and the front connecting frame 62 are removed. That is, as shown in FIG. 57, the paper discharge unit 51 is pulled out to the paper discharge side by removing the screws 134, 134. At this time, as shown in FIG. 58, the bracket 135 is fixed with the paper feeding side push screw 136, and the transmission belt 47 is removed from the pulleys 45, 46. On the other hand, as shown in FIG.
Pull it out toward the front as shown. At this time, the collar 141 and bearing 142 are removed. Also, remove the connector 143 of the inlet reed switch 11 (. When assembling, temporarily tighten screws 137, 138, 139, 140, then tighten screws 139□ 138, 137° 140 in that order. , as shown in FIG. 61, remove the conveyor belt 16 by pulling it toward the front side from the belt rollers 17 and 18.The assembly is performed in reverse order.

Next, the hinges 80, 80 supporting the rear side of the document conveying device 9 as shown in FIG. 62 are always biased in the open direction as shown in FIG. 63. As shown in FIG. 64, when the document feeder 9 is opened to the maximum (75'), the relationship is (moment in the falling direction due to the own weight of the document feeder 9) < (moment in the opening (direction) due to the support spring). from the open state (10° to 75°) of the document feeder 9.
°). Furthermore, when the document transport device 9 is closed as shown in FIG. Due to the relationship (moment), the document conveyance device 9 is held in a closed state (9 degrees or less (closed angle due to its own weight)). Note that if the opening/closing of the document feeder 9 is too light and the closing angle due to its own weight is 10" or more, screws 144, 144 (63rd
(Fig.) and adjust the closing angle due to its own weight to 9" or less. Also, if the document feeder 9 is difficult to open and close and does not close, or if the angle of inclination due to its own weight is less than 9", the document feeder 9 If it does not fall down, loosen the screws 144, 144 (Fig. 63) and adjust the angle of fall to 9'' or less.

[Effects of the Invention] As explained above, according to the present invention, the straight forward conveyance of the document is improved, and therefore, the ability to convey the document to a predetermined position and stop it can be improved, and other excellent effects are achieved. play.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view showing a copying machine with an original transport device, FIG. 2 is a sectional view schematically showing the original transport device, and FIG. 3 is a diagram showing the original transport device. FIG. 4 is a block diagram showing the driving force transmission system and control system, FIG. 5 is a sectional view showing the document conveying device, and FIG.
The figure is an exploded perspective view showing the paper feeding unit, Figure 7 is an exploded perspective view showing a part of the transport unit, Figure 8 is an exploded perspective view showing the transport unit, and Figure 9 is an exploded perspective view showing the paper ejection unit. , FIG. 10 is an exploded perspective view showing the stopper unit, FIG. 11 is an exploded perspective view showing the support structure of the document conveyance device, FIG. 12 is a block diagram of the copying machine and the document conveyance device, and FIG.
Figure 3 is a diagram showing the relationship between the presser roller and the document position.
15 and 16 are action explanatory diagrams, FIG. 17 is a perspective view of the conveyor belt, FIG. 18 is a front view showing another embodiment of the pressing means, and FIG. 19 is a sectional view of the document conveying device. The figure is a flowchart, Figure 20 is a side view showing the copying machine and document feeder, Figure 21 is an exploded perspective view of the upper part of the copier, and Figure 22 is a perspective view showing the state when the document feeder is attached to the copier. 23 is a side view, FIG. 24 is a bottom view of the document conveyance device, FIG. 25 is a perspective view of the copying machine and document conveyance device, FIG. 26 is a diagram showing the connection of the connector, and FIG.
The figure is a perspective view showing the angle regulating plate, FIG. 28 is a front view showing the hinge, FIG. 29 is a cross-sectional view, FIG. Figure 32 is a perspective view showing the procedure for installing the first blind, Figure 33 is a perspective view showing the second blind, and Figure 34 is a diagram showing the procedure for installing the second blind. 35 is an exploded perspective view showing the document conveying device and its accessories, FIGS. 36 and 37 are sectional views showing the document table and the stopper, and FIG. 38 is a cross section showing the document table and glass holder. 39 is a side view showing the paper ejection side of the copying machine and the document conveying device, FIG. 40 is a view showing the window portion, and FIG.
FIG. 1 is a diagram showing a state in which the document conveyance device is opened, FIG. 42 is a perspective view showing a state in which the cover of the document conveyance device is removed,
FIG. 43 is a side view showing the spacer portion, FIG. 44 is a perspective view showing the magnetic catch portion of the document conveying device, and FIG.
Figure 5 is also a side sectional view, Figure 46 is a plan view showing the document used for adjusting the position of the tip of the stopper, and Figure 47 (1).
(2) (3) (4) are also plan views showing the copy paper, Figure 48 is a perspective view for explaining the adjustment of the stopper, Figure 49 is a perspective view showing the holder, and Figure 50 is the stopper portion. 51 is a plan view showing the solenoid portion, FIG. 52 is a plan view showing a document used for document centering, FIG. 53 is a plan view for explaining document centering, and FIG. 54 is a plan view showing the document centering. Figure 55 is a bottom view of the document feeder, Figure 56 is a perspective view of the inside of the document feeder on the front side, and Figure 57 is with the cover of the document feeder removed. A perspective view showing the state;
Figure 58 is a front view, Figure 59 is a perspective view of the front side, Figure 60 is an exploded view of the connecting frame, and Figure 6 is a front view.
Figure 1 is a perspective view showing the state in which the conveyor belt is removed;
63 is a perspective view showing the hinge, FIG. 64 is a side view showing the document feeding device in an open state, and FIG. 65 is a perspective view of the document feeding device with the cover removed. FIG. 3 is a perspective view showing the front side with the cover removed. a... Original, 5... Document table, 9... Document conveyance device, 12... Upper feed roller, 13... Lower feed roller, 14... Upper aligning roller, 15
. . . Upper aligning roller, 16 . Roller, 27... drive motor. Applicant's Representative Patent Attorney Takehiko Suzue Figure 4 Figure 5 Figure 6 Figure 10 Figure 11 Figure 20 Figure 12 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 22 Figure 24 Fig. 29 Fig. 27 Fig. 30 Fig. 34 Fig. 36 Fig. 38 Fig. 39 Fig. 40 Fig. 45 Fig. 44 Fig. 46 Fig. 47 Fig. 51 Fig. 49] 3] Fig. 53 Fig. 54 Figure 55 Figure 56 Figure 61

Claims (1)

[Scope of Claims] A paper feeding means for feeding a document; a conveying means for conveying the document fed from the paper feeding means to a desired position; and a document conveyed to the desired position by the conveying means. and a paper ejecting means for ejecting the paper, and the conveying means includes a belt means running endlessly between the paper feeding means and the paper ejecting means, and the belt means is supported on the paper feeding means side. What is claimed is: 1. A document conveying device comprising roller means for causing the document to travel, and having both ends thereof a larger diameter than the other portions.