JPS60148848A - Transport apparatus - Google Patents

Abstract

PURPOSE:To facilitate replacement of transport belts by providing a transport belt of a transport unit which can be attached and detached by releasing the coupling of a transport unit and a paper discharge unit coupled to one another by coupling means. CONSTITUTION:A document transported by aligning rollers 14, 15 is carried in onto a document table by a transport belt 16, and discharged by discharge rollers 21, 22. A document transport apparatus is separated into a paper feed unit 49, a transport unit 50 and a paper discharge unit 51. If the transport belt 16 is contaminated, the paper feed unit 49, the transport unit 50 and the paper dischage unit 51 which are coupled to one another by a coupling frame are detached and the respective units are separated from one another, so that belt rollers 17, 18 are free.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a 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 its problems]

The above-mentioned type of conveyance device is equipped with a mechanism for energizing, supplying a document, a mechanism for feeding and ejecting the fed document to and from the document table using a conveyance belt, a mechanism for discharging and ejecting the fed and ejected document, etc. However, in the past, these mechanisms were supported by the same frame. Therefore, when replacing the conveyor belt, it is necessary to remove the belt roller around which the conveyor belt is hung, the fixing ring of this roller, and other attachments, resulting in poor workability.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and an object thereof is to provide a conveyance device in which the conveyance belt can be easily replaced.

[Summary of the invention]

In order to achieve the above object, the present invention provides a paper feeding unit that feeds one paper sheet, a transport unit that transports the paper sheet fed by this paper feeding unit onto a transport belt, and this transport unit. A paper discharge unit for discharging sheets conveyed by a paper sheet, and a coupling means for coupling these units, and when the coupling by the coupling means is released, the conveyance belt of the conveyance unit can be attached and detached. This is a characteristic feature.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 in FIG. 1 is a copying machine (image forming device), and the copying machine 1 has a paper feed cassette 2 and a manual paper feed guide 3 on the lower right side, and a copy paper output tray 4 on the lower left side. A document table 5 is provided at the center of the top, an operation panel 6 is provided on the front side of the top, a document insertion guide 7 is provided on the right side of the top, and a document discharge tray 8 is provided on the left side of the top.

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 lower feed rollers 12 and 13, and then sent to the conveyor belt 16 by the aligning row 214 and IS. . The conveyor belt 16 is wound endlessly between belt rollers 17, IB, and presser rollers 19, 19, and 19, and runs on the document table 5. Then, the document a sent by the aligning row 214.15 is carried 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 is performed, the stopper 2Q is retracted, and the document a is carried out from the document table 5 by the conveyor belt 16, and transferred to the carry-out roller 22.
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 paper 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 first gear 29 meshes with a third gear 32 rotatably attached to the shaft 31 of the upper aligning row 214, and this third gear 32 is fixed to the shaft 33 of the upper feed roller I2 and is one-way. It meshes with a fourth gear 35 having a built-in 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 fixed to the shaft 31 of the upper aligning roller 14, and is fixed to the fifth gear 39 having a built-in one-way clutch 38, and the shaft 40 of the belt roller 17 on the sheet feeding side, and operates the one-way clutch 4I. It meshes with a built-in sixth gear 42. Incidentally, the one-way clutches 34, 38, and 41 are well-known ones having a built-in roller inside the clutch.

Pulleys 45 and 46 are fixed to the shaft 43 of the belt roller 18 on the paper ejection side and the shaft 44 of the upper paper ejection roller 2I, and a transmission belt 47 is stretched between these pulleys 45 and 46. . As shown in FIG. 4, when the drive motor z7 reverses, the driving force is transmitted to the upper feed roller 12, and when the drive motor 27 rotates forward, the upper aligning row 214, the conveyor belt 1G, and the upper The driving force is transmitted to the paper transport row 221. In addition,
The pulse disk 36 rotates both when the drive motor 27 rotates forward and backward, and its pulses are supplied to a motor control printed wiring board (forward/reverse drive circuit) 48 . 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. The upper feed roller 12 is attached to these frames 53 and 54.
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, lower aligning rollers 15 are attached to the frames 53, 54 so as to be rotatable and biased upward via bushings 57, 57 and springs 58, 58 on the front and rear sides. The roller 7 is rotated in pressure contact with the lining roller 14. Further, a paper guide 25 for guiding the upper surface of the original document a is arranged between the upper and lower aligning rollers 14 and 15, and is supported by the frame 53 and the shaft 31 of the upper aligning roller I4. 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 paper feed side by a stay 59 on the frames 53 and 54, and the paper guide 26 is disposed below the paper guide 25. The sides are pivoted upwardly by springs 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 I5 is made of metal.

Further, the frame 53 includes a document detection actuator 1.
0 and the inlet reed switch 11 have been replaced, and a drive motor 22 is attached to the frame 54. As mentioned above, the rotation shaft 28 of the drive motor 27 has the first and second gears 29 , 30 , and the shaft 33 of the feed roller 12 .
- a fourth gear 35 and a pulse disk 36; - a third and a fifth gear 32. on the shaft 31 of the aligning roller 14;
39 are installed respectively. The frame 53 is connected to a frame 61 of the transport unit 50 via a connecting frame 62 on the front side, and a connecting frame 63 on the rear side.
As shown in FIG. 7, the above-mentioned feeding unit 50, which is fixed with screws through the frame 6, is provided with a belt roller 17 on the sheet feeding side between the rear side of the frame 6 and the front side connecting frame 62. is rotatably supported, and by releasing the screw fixation of the connecting frame 62.

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 sheet 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 and the belt roller 17.
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 12 as described above. On the other hand, the belt roller 18 on the paper discharge side is a smooth roller made of aluminum, and is elastically retracted toward the road 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 46 is attached to the front side of the shaft 43 of the belt row 218, and a transmission belt 47 for transmitting the driving force to the discharged sheet 221 is wrapped around the pulley 45. Further, a presser roller 19 made of Delrin is attached to the frame 61 via a plate spring 67, and presses 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 2θ is provided on the paper discharge side and rear side of the frame 61.
However, magnetic catches 70, 70 (shown in FIGS. 7 and 8) are attached to the front side.

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 row 221 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 in pressure contact with the upper paper discharge row 221. Furthermore, the frame 71 includes a document discharge detection actuator 23, an exit reed switch 24, and a paper guide 7 that guides the top surface of the document a.
4 is installed. Further, by releasing the screw fixation between the frame 71 and the frame 61 of the transport unit 50, the p transport unit 50 and the paper ejection unit 5z are separated, and the swing frame 64 on the front side is further removed. As a result, the front side of the belt roller 18 on the paper ejection side becomes free, and the conveyor belt 16 can be removed from the belt roller Z8.

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 portion 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, it is pushed upward by the leaf springs 7G+76, and the abutment 77 projects beyond the document table 5 to position the document a. Also, when paper is ejected,
The document table 5 is pushed downward by the solenoid 69.
It is designed to be evacuated from.

The document conveying device 9 in which each unit is configured in this way is
As shown in FIG. 11, the rear two frames 78 and 79 of the frame 61 of the transport unit 50 are attached,
These frames 78 and 79 are supported on the upper part of the copying machine 1 via hinges 130 and 80, so that they can be opened and closed. The neck, the drive motor 2 is on the frame 78.
A control printed wiring board (forward/reverse drive circuit) 48 and the like of No. 7 are attached, and are supplied with power and logic signals from the copying machine 1 via a connector 8Z and the like.

Next, the operation of the document conveying device 9 will be explained. In FIGS. 2 and 12, first, when the document a is guided by the document insertion guide 7 and pressed against the document feed roller 12.13, an entrance switch consisting of a reed switch 11 and a document detection actuator 10 is activated. 82 detects document a. This signal is sent to the main controller 83 of the copying machine I. 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 switches the forward/reverse drive circuit 4 of the original transport device 9.
Send a reverse signal to 8. The forward/reverse rotation drive circuit 48 rotates the drive motor 27 in the reverse direction based on this signal. This drive motor 27
As a result of the reverse rotation, only the document feed rollers 12 and 13 rotate, and the document a is fed until it hits the assigning rollers 14 and 15, and is aligned. At this time, the force of the lower feed roller 13 pushing 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 discharge rollers 21 and 22 rotate. Then, the document a is sent to the document table 5 by the aligning rollers 14, 15 and the conveyor belt 16, and is stopped while being pressed against the leading end double 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 and completing the setting of document a. It is also possible to use, for example, a white, soft, spongy roller instead of the conveyor belt Z6.

Here, the conveyor belt I6 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 the conveyor belt 16 is approximately 1001
There is one. Further, the document a is conveyed with reference to the center, and the relationship between the document position when the document a hits the stopper 20 and the positions of the presser rollers I9 is as shown in FIG. The presser roller 19... is the conveyor belt 16
The document a is held down through the conveyor belt 1 to ensure stable conveyance.
It would be effective if a part of 6 was forcibly waved, and the 13th
As shown in the drawings and FIG. 14, the belt roller 17 on the sheet feeding side is provided with large diameter portions 6, 5, 65 approximately symmetrically with respect to the center. That is, for example, the outer diameter of the large diameter portion 65 is 25 mm with respect to the standard outer diameter of 25 mm of the paper feed side belt roller 17.
, 6tnm, and 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 in a portion 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. A' and A in the direction of movement of document a
’. This is substantially the same even if the conveying force is uniformly distributed over the entire width. However, in this implementation sequence, the 16th
As shown in the figure, since the conveying force is intentionally distributed at both ends away from the center, 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. Figure 17 shows the conveyor bell) 16
The wave of the bulge 85.85 appearing on the surface is seen from below, and since the belt roller I8 on the paper ejection side is smooth, the conveyor belt 16 becomes flat on the paper ejection side, and the stopper 20 and There are no gaps between the two, and there are no negative effects.

Note that although the document a is conveyed with reference to the center, if the conveyance reference is different, it is better to change the distribution of the large diameter portion 65° 65 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 three times over the entire area, the pressing is only possible at the portion 6.
8 is 1.5 mm, and this is the only gap of 1.5 rnm, and if the belt thickness of 0.5 ynm is subtracted, the gap becomes 1 mm. 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. In addition, although the pressing part 68 was provided in the center,
For example, a plurality of them may be provided at any location. In addition, even if it is appropriately placed at a location other than the vicinity of the stopper 20, it is effective to suppress vibrations and waving of the conveyor belt 16. Also,
As shown in FIG. 18, a roller 87 is rotatably attached to a fixed shaft 86 and the conveyor belt 16 is pressed.
If this is suppressed, there will be less friction with the conveyor belt 16, and this will be more effective. In this case, the presser roller I9 floats due to the leaf spring 67, and therefore cannot reliably suppress the conveyor belt 16.

Next, when the setting of the original a is completed as described above, a copying operation is performed, and when the copying operation is completed, the original 11 is ejected as follows. That is, solenoid 69
is driven, thereby the stopper 20 is retracted from the surface of the document table 5, and the document a can be transported. After a predetermined period of time, the drive motor 27 starts normal rotation, and the conveyor belt 16 rotates.
As a result, the document a is conveyed beyond the stopper 20, and then is discharged onto the document discharge tray 8 by the discharge rollers 21 and 22. Then, when the drive motor 27 rotates forward by a predetermined amount of rotation, the solenoid 69 becomes non-driven, and the stopper 2
0 returns to the original position. Further, when the drive motor 27 has rotated by a predetermined amount, the drive motor 27 is stopped, and the ejection of the document a 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, and detects 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 zK, and there is no need to install any additional electrical parts. Also,
Components that are additionally attached to the copying machine 1 include a stopper unit 52, a protective cover, a magnet, etc., and the attachment of all drive components is completed by attaching the document conveying device 9. Therefore, the document conveying device 9 can be easily added to the copying machine I later as an option.

Also, the feed roller 1 is driven by one drive motor 271C.
2, 1.9, to drive the aligning roller 14° 15, the conveyor belt 16, and the discharge roller 21° 22,
Lightly softened and easy to handle.

Furthermore, if the conveyor belt 16 becomes dirty or damaged, it will be necessary to replace the conveyor belt 16.
, the conveyance unit 50, and the paper ejection 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 roller 17°1
8 becomes free, so the i-looking belt 16 can be easily attached and detached.

ylyVI-ui"1g璋i1t,'≠Peach ruled Q When the print switch (shown in FIG. The main controller 83 is provided with a microcomputer, and its RAM contains various control flags as well as information about the previous copying operation. As shown in FIG. 19, this A flag is set to "0" when a copying operation using the document transport device 9 is performed, and the A flag is set to "0" to store the operation mode of the document transport device 9. Each bit is set to ``1'' when a strong copying operation is performed. Here - as shown in Figure 20,
The document conveying device 9 is installed to be openable and closable with respect to the copying machine 1, and is normally located at the solid line position, but can be opened to the dotted line position so that the user can directly set the document a on the document table 5. Whether the document conveying device 16 is closed or open is detected by the position switch 9o and sent to the main controller 83. Then, the document conveyance device 9 is open. In Ll, the A flag is reset to "0". In other words, a state in which the flag is "1" indicates that the document conveyance device 9 remains closed after a copying operation that does not use the document conveyance device 9 is performed. At this time, the document a from the previous copy still remains in the document total 5. Copying operations that do not use the document transport device 9 and are started by pressing the print switch 89 are accepted regardless of the flag, but copy operations that do not use the document transport device 9 and are started by inserting the document a into the document transport device 9 are accepted. This copying operation cannot be accepted when the document feeder 9 is open or when the open flag is "1". As a result, when the thick document a 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 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 is performed and before the document a is removed, a paper jam message is displayed and no copies are accepted.

Next, a procedure for attaching the document conveying device 9 to the copying machine IK 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 9
Remove 4. In addition, the seal 96 attached to the cover 95 is removed, and the document tray 97 and blind 98 are removed.
Also remove 9.

Next, as shown in FIG. 22, tap screws 100° are inserted into the screw holes 99, 99, 99, 99 on the upper rear side of the copying machine 1, as shown in FIG.
o and Z o o (only one is shown), shift the document conveying device 9 in the direction of the arrow, and screw it in place. Next, as shown in FIG. 22, the top cover 95 is
Peel off the security paper and attach the magnet 102 to the square cover 101 on the back side of the holder. Next, remove the cover mounting screws 1θ3 as shown in Fig. 24, and remove the cover 1 as shown in Fig. 25.
Remove 04. Next, insert the connector 81 as shown in FIG. 26, close the document feeder 9, and attach the angle regulating plate 10 shown in FIG. 27 to the hinge 80.80.
5't-1 Attach as shown in Figures 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 102 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 bins 109, 109 at both ends of the stopper 20 at the same hole positions as the scales. Next, when attaching the document table (glass plate) 5 as shown in FIGS. 36 and 37, the gap 8 between the stopper 20 and the document table 5 is set to 0.3 to 0.5 mm. Further, a glass presser 93 is attached to the same hole position as shown in FIG. 38. Then,
Attach the screw 779 of the original table 97 to the position where the sticker 96 was pasted (screw attachment hole). Next, place the document insertion guide 7 on the document table.

Screw it in the same position as 97. Next, as shown in FIGS. 39 and 40, the window 1 on the paper discharge side of the stopper 20 is opened.
An exit seal 113 made of Mylar 111 coated with an adhesive 112 is applied to 10, and the document ejection tray 8 is fitted into the window 110.

Next, adjustment of the document conveyance device 9 will be explained. First of all,
The height adjustment is performed using the covers 114 and 1 as shown in FIG.
15 and close the document conveying device 9. Next, the 42nd
As shown in the figure, loosen the screws 116... and
Hold part 19 and tighten only screw 116. Next, hold down the frame 120 part, tighten the screw 118, and then tighten the screw 1.
Tighten 17. 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, the bracket 123 of the magnetic catch 70.
Loosen the screws 124... respectively, push down the frame 125°126, and then the magnetic catch 70
7 and the spacers J 22 and 122 are on the document table 5.
Tighten the screws 124 while making contact with the screws 124.

Next, to adjust the position of the tip of the stopper 20, as shown in FIG. 46, a document is prepared by drawing a parallel line at the tip. Then, two to three copies of the original document a are made by hitting the stopper 20 without any gaps. Copy paper P is the fourth
In the state shown in Figure 7fil, in Figure 148, rotate the front holder 128 and rear holder 129 by the amount of deviation.
direction (rightward). The copy paper P is shown in Figure 47 (2
), move the holders 128 and 129 to L by the amount of deviation.
direction (leftward). Copy paper P is shown in Figure 47 (3
), move the holder 129 in the R direction by xmn,
Or move the holder 128 in the L direction. Copy paper P
When is in the state shown in Figure 47 (4), only Xu holder 129
in the L direction, or move the holder 128 in the R direction.

Next, adjust the position of the stopper solenoid 20 with cover '14rllB? (Remove (see FIG. 41)), set the document conveyance device 9 to the check mode, and use the thick paper document a to check whether the document a comes out smoothly.

If the document a does not come out (if the solenoid 69 does 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 13
If it does not pull even if it is within the width X of the groove 131 in No. 3,
Loosen the screws 133 and tighten them at the position where the stopper 20 is pulled. Finally, the covers 114 and 115 are attached.

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.
! l ), as shown in Fig. 853, move the document insertion guide 7 to the front side by Tmm. Conversely, the rear side (R side) with respect to the center of copy paper P
If KX is too close, move the document insertion guide 7 to the rear side by Hmm. .

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 to 0.5
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, fix the bracket 135 with the paper feed side push screw 136,
Also, the transmission belt 47 is removed from the pulleys 45 and 46. - 10,000, the connecting frame 62 is as shown in FIG.
Remove screws 137, 138, 139, 140 and pull it out to the front side as shown in Figure 60.

At this time, the collar 141 and bearing 142 are removed. Also, disconnect the connector 143 of the inlet reed switch 11. In addition, when assembling, use screws 1, 37.1F11j,
1: Temporarily fasten 19.140, then screw 139. I38
, 137, and 140 in this order. Then, as shown in FIG. 61, the conveyor belt 16 is removed from the belt row 217.18 while being pulled toward the front side. Note that assembly is performed in reverse order.

Next, as shown in FIG. 62, the hinges 80, 80 supporting the rear side of the document conveying device 9 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 following relationship is established: , the document feeder 9 is in the open state (io°~75
°). Furthermore, when the document transport device 9 is closed as shown in FIG. moment), the document conveyance device 9 is held in a closed state (9 degrees or less (closed angle due to its own weight)). If the opening/closing of the document conveying device 9 is too light and the closing angle due to its own weight is 10 degrees or more, tighten the screws 244, 144 (FIG. 63) to adjust the closing angle due to its own weight to 9 degrees or less. In addition, when the document feeder 9 is difficult to open and close and the document feeder 9 does not close, the screws 144, 144 (FIG. 63) [Effects of the Invention] As explained above, according to the present invention, there is a paper feed unit that feeds paper sheets, and a paper feed unit that feeds paper sheets. A conveyance unit that conveys leaves by a conveyance belt, a paper discharge unit that discharges paper sheets conveyed by this conveyance unit, and a coupling means for coupling each of these units, and the coupling by the coupling means is provided. When released, the conveyor belt of the conveyor unit is configured to be removable, which provides excellent effects such as easy replacement of the conveyor belt.

[Brief explanation of drawings]

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. 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; 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 implementation of the pressing means, and FIG. 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. FIG. 32 is a perspective view showing the procedure for installing the first blind; FIG. 33 is a perspective view showing the second blind; FIG. 34 is a diagram showing the procedure for installing the second blind. , FIG. 35 is an exploded perspective view showing the document conveying device and its accessories, FIGS. 36 and 37 are sectional views showing a portion of the document table and the stopper, and FIG. 38 is a sectional view showing the document table and the glass holder. Fig. 39 is a side view showing the paper ejection side of the copying machine and document transport device, Fig. 40 is a view showing the window portion, Fig. 41 is a view showing the document transport device in an open state, and Fig. 42 is a view showing the document transport device. 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; FIG. 45 is a side sectional view; FIG. 46 is a perspective view showing the device with the cover removed; The figure is a plan view showing the document used for adjusting the position of the tip of the stopper, and Figure 47 (1
1+21 +31 (41 is also a plan view showing the copy paper, FIG. 48 is a perspective view for explaining the adjustment of the stopper, FIG. 49 is a perspective view showing the holder, and FIG. 50 is a sectional view showing a part of the stopper, Fig. 51 is a plan view showing the solenoid part, 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 of the document table and stopper. 55 is a bottom view of the document conveying device, FIG. 56 is a perspective view showing the inside of the document conveying device on the front side,
FIG. 57 is a perspective view showing the document feeder with the cover removed, FIG. 58 is a front view, FIG. 59 is a perspective view of the front side, FIG. 60 is an exploded view of the connecting frame, and FIG. 62 is a perspective view showing the document conveying device with the cover removed; FIG. 63 is a perspective view showing the hinge; FIG.
65 is a side view showing the document conveying device in an open state, and FIG. 65 is a perspective view showing the front side of the document conveying device with the cover removed. a... Document, 9... Document transport device, 16... Transport belt, 49... Paper feeding unit, 50... Transport unit, 51... Paper ejection unit, 62... Connecting frame . Applicant's Representative Patent Attorney Takehiko Suzue 15 Figure 16 Figure 17 Figure 18 Figure 25 Figure 29 Figure 27 Figure 28 Figure 24 Figure 1 Figure 26, Figure 30 106 Figure 32 07 Figure 34 Figure 36 Figure 38 Figure 46 Figure 47 Figure 51 Figure 31 Figure 49 31 Commissioner of the Japan Patent Office Kazuo Wakasugi 1. Indication of the case Patent application No. 1656/1989 2, Name of the invention Conveying device 3, Person making the amendment Relationship to the case Patent applicant (307 Tokyo Shibaura Electric Co., Ltd. 4, Agent 6, Amended specification Full text 7. Clearance of amendment details! (No change in content)

Claims (1)

[Claims] A paper feed unit that feeds paper sheets, a transport unit that transports the paper sheets fed by this paper feed unit using a transport belt, and a paper discharge unit that discharges the paper sheets transported by this transport unit. unit and a coupling means for coupling these units, and when the coupling by the coupling means is released, the conveyance belt of the conveyance unit becomes detachable. Conveyance device with + sign.