JPS58147762A - Automatic correcting device of lateral shift of original paper of multi-copying machine - Google Patents

Abstract

PURPOSE:To generate no failure copy, by providing a lateral shift correcting means on an exclusive repeat carrying path of original paper, driving the lateral shift correcting means in accordance with a detecting signal from a lateral shift detecting means, and superposing photosensitive paper and original paper in a correct state. CONSTITUTION:In a multi-copying machine having an original paper repeat tranfer mechanism for copying plural sheets from one sheet of original paper, a lateral shift detecting means S consisting of a switch which is turned on and off in accordance with a position of the original paper is provided on a repeat carrying path 60 of separated original paper, and when a lateral shift is detected in the original paper in the course of repeat carrying, a lateral shift correcting means corrects it in accordance with its detecting signal. As for this lateral shift correcting means, an outside guide plate 85 of a repeat carrying path 61 is provided so that the position can be controlled, the left and right carrying path of the original paper is controlled, and the original paper is guided to the necessary direction and is corrected.

Description

[Detailed description of the invention] Technical description: This invention automatically overlaps manuscript paper and photosensitive paper for exposure, automatically separates them after exposure, and repeats the separation of manuscript paper as manuscript paper. In a multi-copy copier that makes multiple copies from one sheet of original paper by superimposing it with the next photosensitive paper and exposing it to light using a transport mechanism, the original paper is circulated by repeated transport and used for multi-copying. The present invention relates to a device that automatically corrects lateral deviation when

BACKGROUND ART Various types of multi-copy copiers as described above have already been provided. However, when manuscript paper is repeatedly conveyed for multi-copying by shuffling and circulating, the length of the circulation path in the manuscript paper repeat conveyance path increases. Due to minute differences in the position of the photosensitive paper in the width direction, resistance in the manuscript paper circulation path, etc., the manuscript paper may shift to one side of the paper that is curved in relation to the direction of travel, causing a lateral shift, and the next photosensitive paper The position of the circulated original paper does not match.

For example, Japanese Patent Application Laid-Open No. 5-117 discloses a system in which the above-mentioned deviation of the original paper in the tank is detected by a switch means, and the length of the original paper circulation path is automatically adjusted to correct the horizontal deviation of the original paper.
This is already known from the publication No. 6-24340. However, this device corrects the misalignment of the original paper by moving the exposure glass cylinder, so even if paper or horizontal scratches are detected,
The original paper in the T-groove, which is misaligned in the tank, overlaps the photosensitive paper and enters the exposure section, resulting in unsatisfactory or wasted copying immediately after horizontal scratches are detected.

The movement of the rounded glass cylinder used to correct horizontal misalignment simultaneously changes the orientation of the original paper that has shifted horizontally, as well as the overlapping photosensitive paper. In addition, during post-processing such as passing through the developing device, it is possible to cause problems such as catching 9, tearing, or jamming, and the means for separating the exposed manuscript paper from the photosensitive paper. Depending on the separation method, there is a possibility that the leading edge positions of the original paper and the photosensitive paper do not match, resulting in poor paper cutting and separation.

The glass cylinder that corrects the horizontal deviation of the original paper is located within the transport path of the original paper/photosensitive paper in the case of single copying, so horizontal deviation detection means are provided on both end faces of the glass cylinder, and the glass cylinder is In order to perform single copy by keeping it in the neutral position at all times, and tilting the axis line to the right or left depending on the horizontal scratches on the original paper during multi-copying, there are two horizontal scratch detection means, and the glass cylinder is tilted to the left or right. A drive means such as a solenoid for tilting each requires 2 ftA.

Purpose This invention provides a document paper tank deviation correction means provided in a document paper repeat-only transport path, and adjusts the original paper in response to a detection signal from a document paper tank deviation detection means located at the front in the document paper transport direction. It is an object of the present invention to provide an automatic document stack misalignment correction device for a multi-copying machine, which can move the documents to a position that corrects horizontal misalignment and eliminates the above-mentioned conventional drawbacks.

In addition, in the already known device, a switch for detecting the misalignment of the original paper in the tank is fixed at a fixed position on one side of the original paper circulation path, and the original paper insertion guide is fixed at a position common to each copy size. to guide the inserted manuscript paper.
Ru. However, if the copy size is small, the original paper and photosensitive paper may be exposed to light on one side of the machine width.
Therefore, exposure unevenness on the left and right sides is likely to occur. In order to avoid this drawback, most copiers usually have one size for each size.
It passes through the center of the width of the copying machine, and center threading requires two detection means for each size, and a size detection means is also required to activate the detection means according to the size, making the configuration significantly complicated. .

In the embodiments shown below, improvements have been made so as to overcome the following drawbacks. A table 2 for inserting manuscript paper O is provided at the lower front of the main body. Continuous manuscript paper loading path 3 on almost the same surface as this table 2
However, the direction is formed within the main body l of the copying machine. In the manuscript paper transport path 3, a manuscript paper transport roller 4 and a pressure plate 5 which is firmly pressed so as to be in constant pressure contact with the roller 4 are inserted from above the table 2 and the manuscript paper 0 is inserted between them. The document is placed in the receiving position by rotating the roller 40 times, and is arranged to be conveyed to the rear of the document paper carrying path 3. After the roller 4 and the pressing plate 5 in the original paper carrying path 3, there is a manuscript paper carrying-in detection switch 8. 1 has fallen, and its detection terminal 6 is facing the manuscript paper loading path 3 〇Manuscript paper loading path 30 lower 1 The feeding means 7 is equipped with a paper feeding means 7 for feeding S-light mlPt-collection paper. Feed paper to the fixed position on P ν-ra 10
When the bottom plate 8& is lifted by the bias of the spring 9, the photosensitive paper P comes into contact with the paper feed roller 10KEE, and the same roller lO
Each time the photosensitive paper P in the paper feed cassette B is driven to rotate, the photosensitive paper P in the paper feed cassette B is fed and fed one by one starting from the top paper that is in pressure contact with the fourth paper 10.

Behind the original paper carrying path 3, the original paper O from the same carrying path 3 is placed.
It has a document paper receiving port 11a for receiving the photosensitive paper P, and a photosensitive paper receiving port ttb for receiving the photosensitive paper P from the paper feeding means 7,
A superimposed conveyance path 11 is provided for conveying original paper O and photosensitive paper P received through both reception openings 11a and llb in a vertically superimposed manner.

In the superimposed conveyance path 11, a conveyance p-roller 12 and a driven p-roller 13, which comes into contact with KFE when descending onto the same roller 12, receive original paper 0 and photosensitive paper P supplied through the two receivers 011a and llb. A receiver is provided for stacking and conveying. Further, behind the rollers 12' and 13, there is a superimposed conveyance path 11.
A tip alignment member 14 is provided that can freely move forward and backward.

Conveyance p of the original paper carry-in roller 4 and the superimposed conveyance path 11
- While the roller 12 is designed to rotate and be stopped when the motor lid is activated and stopped, the paper feed roller 1O is rotated by a motor (not shown) when the document paper carry-in detection switch S1 detects the detection operation. It is rotated once by the operation of the rotational force 5, and a sheet of optical paper r is fixedly fed so that its leading edge reaches the leading edge matching member 14. The leading edge alignment member 14 is moved into the superimposed conveyance path 11 at the same time as the paper feed roller 1'O is rotated by the operation of the one-rotation cam, and temporarily obstructs the advance of the original paper O and the photosensitive paper P. , their tips are aligned. The driven roller 13 is interlocked with the tip alignment member 14iC, and the member 14 is lowered to align the overlapping conveyance path 11.
When the original paper 0 and the photosensitive paper P are in a free state, they move upward and away from the transport p-ra 12, and the original paper 0 and the photosensitive paper P come into contact with the member 14 in a free state to align their leading edges.
After aligning the ends of the y, the paper is moved by the one-rotation cam and both sheets are 0. When the paper P is allowed to advance, it is moved downward and pressed against the conveyance roller 12, and the two superimposed sheets o and p whose leading edges have been aligned are conveyed to the rear of the superimposed conveyance path 11. Reference numeral 15 designates the center axis of vertical movement of the driven roller 13 (broom 2), and reference numeral 16 represents the center axis of vertical movement of the tip alignment member 14.

In the 11th section of the superimposed transport path 11, the original paper O to be superimposed and transported is
The exposure means 17, which receives the photosensitive paper P and exposes the image on the document paper 0 onto the photosensitive paper P, is rotatably held in the copying machine main body l. and a glass cylinder 19 in which an exposure lamp 18 is disposed in the inner space, and one drive roller 20 and w
Conveyor belt 25 stretched by several guide rollers 21, 22, 23, and 24 ICs, and superimposed conveyance W411
A receiving port 26 faces the rear of the paper receiving port 26, and the manuscript paper O and the photosensitive paper P received through the receiving port 26 are to be transported to the paper-cutting tray 2 in a superimposed state before being subjected to light exposure. ing.

The feeding port 27sK of the exposure means 17 is provided with a single-sided guide 2B following it in a downwardly convex curved state opposite to the conveying path for holding the original paper O and the photosensitive paper P between the cylinder 19 and the bell tray 25. At the same time, a pair of shift rollers 29 and 30 are provided at the rear end of the single-sided guide 28 to adjust the circumferential speed of the roller 29 on the side that scoops the original paper 0 to the conveyance *t of the original paper 0 and the photosensitive paper P in the exposure means 17. Same speed,
- The peripheral speed of the roller 30 on the side in contact with the optical paper PK is set higher than that, and both rollers 29 and 3G are connected to the single-sided guide 2.
The exposed manuscript paper 0 and the photosensitive paper P that are sent 9 while curving along the direction 8 are received, and the 1 manuscript paper O is transferred to the roller 29.
Thus, the receiver feeds out the paper at the feeding speed, whereas the photosensitive paper P is fed out at the same speed as the feeding speed by the roller 30, so that the photosensitive paper P is placed ahead of the original paper 0 by a certain distance.

The photosensitive paper P is fed out at a speed faster than the conveyance speed of the exposure means 17, but the shifter pair 29, 30 and the exposure means 1
7, the receiver is gradually tensioned from the curved state along the single-sided guide 28, thereby absorbing the speed difference between the insertion speed and the delivery speed. The roller 30 is a photosensitive paper P
The photosensitive paper P is rotated at the same WRm as one of the rollers 29 by moving a clutch (not shown) and disconnecting it from the drive system at or just before the time when the roller 29 is at its maximum tension. It is designed not to make you nervous.

A separation guide member 31 is provided on the sending side of the pair of smooth rollers 29 and 30, and together with the pair of rollers 29 and 30 and the single-sided guide 28, it forms a separation means 32 for separating the original paper 0 and the photosensitive paper P from each other. ing. Separation guide member 31
The paper is made of a disk, and a pair of smoothing rollers are installed on a part of its outer circumference.
9. The leading edge of the photosensitive paper P fed out in advance from 9.30 enters the folding part 3 in the direction of guiding the photosensitive paper P.
1a (Fig. 2), and by rotating clockwise with the leading edge of the photosensitive paper P engaged in the clamping portion 31&, the photosensitive paper P is moved between the pair of shifting rollers 29°30 The direction of the leading edge of the photosensitive paper P is reversed, for example, by nearly 180 degrees so that it gradually deviates from the natural outer drawing path of the original paper O that is fed out.

The separation guide member 31 is rotatably mounted on a rotating shaft 36 of a guide roller 35 disposed concentrically with the separating guide member 31, and is mounted on a rotating shaft (not shown) around which the one guide controller 35 rotates while the motor M is operating. The separation guide member 31 is forcibly rotated by the meshing of a partially notched driven gear integral with the separation guide member 31 with the drive gear on the rotation shaft (not shown). usually,
The notch of the driven gear faces the drive gear and is not rotated.
In addition, the clamping portion 311L is locked by the stopper 33 so as to be positioned on the leading edge path of the photosensitive paper P from the pair of shifting rollers 29 and 30.

The passive arm 33a of the stopper 33 is waiting at the entrance position of the clamping part 31m of the separation guide member 31, and the pair of shifting rollers 29, 30 are sent out to the clamping part 3.
When the passive arm 33g is pushed by the leading edge of the photosensitive paper P that is about to enter 1a, it rotates clockwise around the shaft 34 (see FIG. 1).

(FIG. 2), the separation guide member 31 is released from the engagement portion 31b and the member 31 is released from the lock. Further, when the separation guide member 31 is released from the stopper 33, it is rotated clockwise by the bias of a weight (not shown) provided on a part of the side surface, so that the driven gear meshes with the driving gear. Thereafter, while being forcibly rotated clockwise, the leading edge of the photosensitive paper P, which is being fed at a speed faster than the circumferential speed, is guided while being securely received in the clamping portion 31&, and is guided at a speed faster than the circumferential speed. The document paper 0 sent by quick coal is reliably prevented from getting into the clamping portion 31a.

Note that the photosensitive paper P is moved at different speeds due to the difference between the continuous layers fed out from the pair of shifting rollers 29 and 30 and the same speed of the separation guide member 31.
Separation guide member 31 and guide roller 3 are provided between them.
5, and has the effect of pushing the following original paper O out of the guide travel path of the photosensitive paper P by the separation guide member 31.

An intermediate feed roller 37 that is pressed against the outer periphery of the guide roller 35 is provided at the end point of the guide for the leading edge of the photosensitive paper by the insertion portion 31& of the separation guide member 31, that is, at the upper part of the member 31. Separate the photosensitive paper P that has reached between 37° and 37° and separate it into I! Feed the photosensitive paper to the conveyance path 38,
The separation guide member 31 separates I by rotating the remaining paper until the notch of the driven gear faces the drive gear again and the drive is cut off.
! - The clamping portion 31m is removed from the leading end of the photosensitive paper P entering the optical paper feeding path 38. Further, when the separation guide member 31 returns to the initial position where the drive is cut off, the stopper 33 engages with the engagement @31b of the separation guide member 31 due to its own weight or the backward movement of the spring. 31 is to be relocked.

At the rear of the separated photosensitive paper conveyance path 38, there is a normal photosensitive paper conveyance path 40 to the developing means 3g and an octopus 1 discharge conveyance path 4 to the outside of the machine.
1 is branched, and a paper path switching member 42 is provided at the branch portion to selectively connect any one of the transport paths 40 and 41 to the photosensitive paper transport path 3B after separation. Reference numerals 43 and 44 denote a pair of conveyance rollers provided in the photosensitive paper conveyance path 38 after separation, 48 a pair of conveyance rollers in the II paper discharge conveyance path 41 that shares the roller 43, and 46 and 47 a conveyance belt 25 of the exposure means 17. The conveyance roller 6 in the shared normal photosensitive paper conveyance path 40 is in pressure contact with the guide portion of the belt 25 formed by the guide roaches 24 and 23. clam! Preferential paper delivery #4! A manual photosensitive paper transport path 4B is provided from outside the machine to the normal photosensitive paper transport path 4o, and the roller 45 is also used as a manual photosensitive paper transport path 4o.

The developing means 39 is located at the rear part K [<
Photosensitive paper carrying-in path 49, developing roller 5o, and photosensitive paper carrying-out path I
Fi 51, a developing roller 5 and a developing solution tank 52.
g&wI of felt, etc. located above and rotated counterclockwise, the lower end of which is immersed in the developer in the developer tank 52;
w) The developing solution is applied to the surface of the material 53, and the photosensitive paper 0 conveyed from the carry-in path 49 to the carry-out path 51 is pressed by the flexible pressure blade 54 and comes into contact with the photosensitive paper 0. develop. 55#i developer amount regulating blade! 5
6 and 57 are a pair of photosensitive paper carrying-in rollers, and 58 and 59 are a pair of photosensitive paper carrying-out rollers (FIG. 1).

On the other hand, the lower tank of the separation guide member 310 is provided with a separated original paper transport path 60 that is continuous from the 29.30 parts of the shifted four-ra pair, and at the rear thereof, the original paper repeater to the original paper transport path 3 is provided. The conveyance IPi 61 and the 2-discharge 1 conveyance path 62 to the outside of the machine are formed in a branched manner, and at the branched portion, either of the above-mentioned conveyance paths 61.6'2 is connected to the separated original paper fine conveyance path 60. A two-way switching member 63 for selectively connecting the two channels is provided. 64 is a knurling roller which is auxiliary 0-
A gap of about IM is formed between the roller 65 and the roller 64.
The p-roller 6 is attached to the drive roller 66 provided at both ends of the rotating shaft.
The roller 68 is rotated together with the roller 64, and the leading edge of the document paper 0 separated from the photosensitive paper P is brought into contact with the driven roller 67 provided with pressure on both sides of the rotating shaft of the roller 64. The separated original paper 0 is reliably guided to the separated original paper transport path 60. 68.
69 is a pair of conveyance rollers in the document paper conveyance path 60 after separation;
is a conveyance reeler in the paper discharge conveyance path 62. Also, 7
72 is a paper discharge tray for the separated original paper, and 73 is a paper discharge tray for the non-separated original paper 0 and the photosensitive paper P.

In the above configuration, a post-separation photosensitive paper detection switch S is provided on the post-separation photosensitive paper transport path 38, and a post-separation original paper detection switch 8 is provided on the post-separation original paper transport path 60. The switches S and B are any suitable known switches, such as an ultrasonic switch or a mechanical switch, which can detect the passage of the photosensitive paper P or original paper 0 in each transport path 38.60. A sensor is used, and the first . A detection switch S is connected to each solenoid (not shown) for actuating each second passage switching member 42.63.

The first path switching member 42 operates normally only when the detection switch B detects the separated photosensitive paper P, the detection switch B detects the separated original paper 0, and a continuous copy signal is input by turning on the multi-copy switch. When the second path switching member 63 is switched to the photosensitive paper transport path 40 side and to the original paper repeat transport path 6111, continuous copying is performed by the original paper repeat mechanism, so that the original paper O and the photosensitive paper P are not separated. 11, enters one of the separated document paper conveyance path 60 and the separated photosensitive paper conveyance path 38 and activates each of the detection switches S.
, S, if only one of them is detected, switch the path switching member on the conveyance path side where the switch that activated the detection is installed to the paper discharge conveyance path side, and remove the non-separation related to the detection. The original paper O and the photosensitive paper P in this state are to be ejected from the machine.

The first passage switching member 42 and the second passage switching member 63 are
The I-1 passage switching member 42, which is supported to rotate together with each support shaft 74, 75 which is rotatably held on the side plate frame (not shown), 74 in the counterclockwise direction, and is switched from the first paper discharge conveyance path it @ shown by the solid line in FIG. That's what I do.

When the second path switching member 63Fi and its operating solenoid are activated, the switch is made from the second paper discharge conveyance path 62 side shown in solid line in FIG. They are returned to their positions and are waiting.

In order to automatically correct the horizontal scratches that occur during the circulation transfer of the original paper O in multi-copying, first, a paper horizontal scratch detecting means S is sent to the original paper transport path formed by the separated original paper transport path 60. It is located. In principle, the lateral shift detecting means S can be formed by arranging a set of switches 8Xt8Y, which are turned on and off depending on the position of the original paper, as shown in FIG. 3, for example. Each of these switches sx, sy is set so that one side is at the outer permissible limit position with respect to one side edge of each size manuscript paper 0, which is positioned by a one-sided guide by a fixed manuscript paper positioning guide 76, with one side being at the outer permissible limit position based on the appropriate position. The other is located in the inner tolerance limit position, and the switch S! is located in the outer tolerance limit position, respectively. operates when its position JCJilX paper 0 is present, and the switch S! is in the inner tolerance limit position! is designed to operate when there is no original paper 0 at that position.

As a result, one edge of the original paper O is connected to both switches SX and S.
! If it goes outside the permissible limit range between
When X operates and comes off inward again, switch S! operates to detect horizontal scratches on document paper 0.

However, this method for detecting paper stack scuffs is the same as the known method described above, and for example, in a copying machine up to A3 size horizontal passing, four types of original paper such as A311141A41B5 can be detected.
If we consider that the document paper O is passed horizontally, there is no problem because A3 size manuscript paper O is passed at the center of the machine width #1, but B5 size etc. is passed in a state closer to one side and is not exposed to light. Therefore, the above-mentioned exposure unevenness occurs.

This exposure unevenness is caused by the characteristics of the exposure lamp.
Although many devices have been proposed to reduce exposure unevenness, the usual method is to pass each size of document paper O1 through the center (FIG. 4). In center threading, as is clear from the fourth mark, the edge position on one side of the document sheet 0 at which inspection scratches should be detected differs depending on its size. S.A.
3. .

s 14 t t S14 BT SM419SA4
戈Barrowt*Bmgm is placed (FIG. 4). The document paper positioning guide 76 is designed to align the document paper 0 according to its size.
It is provided so as to be movable in the X direction. The manuscript paper size is
Each size detection switch 5A8815B4B+
81158, which is opposed to the magnet foot attached to the document alignment guide 76, is automatically detected by operating, and the lateral shift detection switches 8A31, 808.81158 are automatically detected according to the detected size. ...8 B @ t +
A necessary set of S■ is to be enabled. In this case, in addition to a large number of switches, special means for detecting the document paper size is required. Therefore, when the original paper size is limited to A3, B41A41B5, for example, the first detection switch 8 a is placed at the left edge position of the BS size original paper, and the second detection switch sb is placed at the right edge position of the A4 size original paper. In addition, B4 size manuscript paper left side position 1F [#! 13 detection switch 8o + 4th detection switch Sa located at the right edge position of A3 size document paper, one 11 detection switch for each document paper size as shown in FIG.
1+ detection switches are sequentially arranged on the left and right edges of the small-sized manuscript paper. This is a trap, number 4
It uses half the number of detection switches as in the case shown in the figure, and does not require any special means for detecting the document paper size, such as detecting the document paper size in conjunction with the document paper alignment guide as described above. , it is possible to detect horizontal scratches on manuscript paper of various sizes.

That is, the operation status of the switch in each case where the original paper of each size is shifted to the right side or the left side is as shown in the table below.

As a result, only switch Sm operates, or switch 8
Only in the specific case where a + S b T S c work together, the original paper is biased to the left;
If there is no operating switch, or switches 8 & 1sb operate together, or all switches operate, the manuscript paper will be biased to the right.
Four switches 8 a HS b +8c + S(l
As shown in FIG. 6, the original paper alignment guide 76, which can detect all the right and horizontal scratches on the manuscript paper of each size, is a plate with one end fastened 78. A size signal pin 81 is provided with a spring 79 and is attached to a position corresponding to the size of the photosensitive paper P stored in the cassette 8 on a cassette lid 80 provided in the paper feed cassette 8.
6, the plate spring 79 is brought into contact with the plate spring 79 from the right side in FIG. 6, and is positioned at a predetermined position corresponding to the document paper size via the paper feed cassette 8 which is selectively used depending on the document paper size. That's what I do. The size signal bin 81 is
While the upper end of the leaf spring 79 is formed in a round shape, the leaf spring 79 is formed in such a manner that a piece 79 & for getting over the round upper end of the pin 81 is curved upward on the side opposite to the abutting edge against the pin 81. When the leaf spring 79 is moved to the right side with the leaf spring 79 located on the left side of the pin 81, the leaf spring 79 rides over the pin 81 to the right side due to the spring action due to the override piece 79 & trap, and the leaf spring 79 moves over the pin 81 to the right side. When the guide 76 is moved to the left while being on the right side of the pin 81, the leaf spring 79 comes into contact with the pin 81 to position the guide flow.

The leaf spring 79 is attached to the mounting board 82 to which it is fastened 78.
, insert the elongated hole 82a and guide screw 8 for fi80.
3, the bent piece 82b of the board 82 is attached so that the position can be adjusted.
and the bent piece 76 of the guide 76 corresponding to the support part of the board 82
The alignment with the photosensitive paper P contained in the cartridge set 8 can be finely adjusted by means of an adjustment screw 84 connecting the &.

On the other hand, when the horizontal deviation of the original paper 0 is detected, the original paper stack misalignment correction means is a curved original paper repeat conveyance path that serves as a dedicated Libby F transport path for circulating the original paper 0 during multi-copying. It is provided as an outer guide plate 85 of the path 61 so that its position can be adjusted (FIGS. 1 and 2), and guides the original paper O in the necessary direction for horizontal misalignment correction by adjusting the left and right conveyance path of the original paper O. I'm trying to make it possible. Guide plate 85
The transparent material is a translucent acrylic family, as shown in Figure 2.

Figure 7! As shown in FIG. 8, a guide mounting plate S9 is provided at the center of a unit base plate 87 in a document paper repeat conveyance unit 86, and is pivoted by a vertical shaft 88. .

Attach the upper edge of the outer guide plate 89a to the outer guide plate 89a with the screw 90, and then attach the outer guide plate 85 to the 9th part about the shaft 8B.

As shown in FIG. 11, a spring 91 is applied to one end of the first mounting plate 89 to urge it clockwise, so that the guide plate 85 comes into contact with a stopper 92 on the mounting plate 89. It is designed to always take a tilted posture as shown in the figure. 4-1 on one outer surface of the frame 93 located on both sides of the unit 86. A guide plate operating lever 95 whose upper end is pivotally connected to a shaft 94, and an operating solenoid 96 for the lever 95.
A lever 95 is provided, the operating end 95 of which faces the inside of the frame through the window 99 of the frame 93, and a mounting plate 89.
The solenoid 96 engages with a five-piece pin 97 provided on one side and protrudes outward from the window 98 of the unit side plate 100.
When the pin 971 is activated, the arrow Y in Figures 9 and 10
direction, and move the GCD plate 85 against the spring 91 to the 11th position.
It is made to rotate to an inclination posture opposite to that shown in FIGS.

Guide plate 85Fi, in the shafted state as shown in Fig. 9, the first
As shown in Figure 3, for the original paper O being conveyed in the two directions of arrows, the conveyance path on the left side of Figure 913 is also
The conveyance path on the right side of the figure is in a position slightly larger, and the original paper O is advanced in the direction of arrow 2'. Accordingly, the original paper 0 is transferred to the original paper repeat conveyance path 61.
When passing, you will be guided to the left (right side in the diagram) in the direction of travel. In the tilted state as shown in Figure 11,
Contrary to the above, the manuscript paper of: guides it to the right side (left side in the figure) in the direction of travel ◇ At this point, the guide plate 85ij always maintains the inclination shape 114 in Figure 9.
Therefore, if document paper 0 is biased to the right in the direction of travel, solenoid 96
If the guide plate 85 is left as shown in FIG. 9 without being activated, it is possible to guide the original paper 0 to the left side in the direction of travel and correct the horizontal deviation of the original paper O to the right side. In other cases, operate the solenoid 96 to set the guide plate 85 to the state shown in FIG. By shifting the original paper conveyed in this state to the right side in the direction of rapid movement and detecting it as a scratch on the right side, the solenoid 96 is activated to move the guide plate 85 to the 9th position. By returning to the state shown in the figure and correcting the lateral deviation to the right, the lateral deviation of the document sheet 0 to the left can be corrected.

As a result, the guide plate 85 resists the activation of the solenoid 96 and rotates to the state shown in FIG. In other cases, it is sufficient to turn off the solenoid 96 so that the state shown in Fig. #9 is restored by the urging of the spring 91, and by simply controlling one solenoid 96 on and off, It is possible to correct horizontal displacement of the original paper O in both the left and right directions.

Such on/off control of the solenoid 96 is performed, for example, in the 14th Fj! This is done using an electric circuit as shown in J.

In FIG. 14, ten circuits 101 include a first circuit 101 for detecting scratches in the original stack. Second. Third. 4th each detection switch 8
Detection signal B + G e from a, 5bt8o+8d
A + D ft is received, and when only the operation signal B of switch 8a is received, which corresponds to the case where the original paper O is horizontally shifted to the left as explained in the table above, and when switch Sa+8b+
When receiving operation signals B and 0°A from Sc at the same time,
Each is pressurized to output an output Qt-Qt. These outputs Qx+Q* are given to the OR gate 102 and OR
The gate 102 outputs an operation signal when receiving any of the outputs QseQ, and operates the flip/70 tube circuit 10.
For both OP terminals of No. 3, via the OR delay circuit 104,
Also, input it as is to the D terminal, and flip 7.
In the 0-tub circuit 103, as shown in the operation diagram in Figure @15, the OR gate output signal delayed by the time constant t1 by the 0/R delay circuit 104 from the input to the D terminal is input to both OP terminals. From this point on, document paper 0 is on its repeat conveyance path 6.
After the switch S1 detects that the 111 paper has entered the paper entry path 3 after 11, the strict detection is completed and the 01 m
9#fi until a pulse signal is applied to the terminal
Apply force to make transistor TR conductive, and solenoid 9
I'm trying to turn on 6.

This causes the solenoid 96 to switch to the switch 8a.

When BbeBoeBl detects a horizontal scratch on the original paper 0 to the left, it is activated from immediately before the detected original paper 0 passes through the original paper repeat conveyance path 61 until after a certain period of time, and the guide plate 85 Keep it in the state shown in Figure 11,
It is possible to reliably correct horizontal scratches on original paper 0. The solenoid 96 may end its operation immediately after the original paper O has passed through the original paper repeat conveyance path 61f, and the on/off time of the solenoid 96 can be arbitrarily set by various means. The middle part of FIG. 15 shows the length of the manuscript paper.

The guide plate 85 is placed in a conveyance path dedicated to repeating manuscript paper, and is always kept in the tilted position shown in FIG.
During single copying where original paper 0 is not repeatedly conveyed, it does not cast any shadow on photosensitive paper P.
Regardless of whether it is a single copy or a multi-copy, it exists independently of the photosensitive paper path and has no influence.

In order for the horizontal deviation correction operation of the original paper 0 by the guide plate 85 to be performed accurately in accordance with the actual lateral deviation state of the original paper 0, w, 1/f4 paper O lateral deviation detection means S to detect the lateral deviation of the original paper and
It is preferable to set the position immediately before the guide plate 85 installation part. The guide plate 85 is transparent or semi-transparent as described above, so that during multi-copying, the guide plate 85 can prevent the document paper 0 from being repeatedly conveyed through the window 1 provided at the front of the machine body L.
Since it can be viewed from the outside through 05, it has the effect of giving a sense of security to the user and visually observing the state of misalignment of the document sheets. In addition, the entrance to the exposure means 17 by repeated conveyance of the manuscript paper is set at the same position as the manuscript paper entrance from outside the machine body 1, and the manuscript paper insertion guide part 106 is integrated with the lower edge of the guide plate 85. The guide plate 85 can also be used as a document paper insertion guide, and the document paper carry-in roller 4 and switch S1 can also be used for single copying and multi-copying, which simplifies the structure. ing.

The manuscript paper feed roller 4 is made of flexible material.7) 4-
The manuscript paper O entering the manuscript paper entry path 3 is
Regardless of whether it is manually loaded or beat-transported, it is transported in the direction of arrow W in FIG. 16 to perform exposure in single copy or multi-copy.

In the case of multi-copy, original paper 0 is on repeat conveyance path 6.
1, the direction of movement can be changed from arrow 2 to 2' by the guide plate 85 in the normal tilted position shown in FIG. 9, as in the case of FIG.
As shown in the figure, once the original paper is caught between the paper feed roller 4 and the press plate 5, it is conveyed in the direction of arrow W, and at the time it is caught, the leading edge of the paper is at the leading side corner 0' position. has been moved from its initial position by a dimension a. Thereafter, the original paper oFi conveyed by the rollers 4, whose direction of travel is changed by the guide plate 86, is moved in parallel in the direction of the arrow W, and the leading side angle 0' is changed by the dimension α. While maintaining the displaced position, as shown in Fig. 17, insert the tip alignment member 1.
Contact 4 first. At this time, the position of the manuscript paper 0 at the part that is bitten by p-24 is moved by a dimension β in the opposite direction to the movement of the leading side corner O' by the dimension α with respect to the initial position. are doing.

When the original paper 0 is further conveyed in the direction of the arrow W in this state, the advancement of the leading side angle 0' is blocked by the member 14, but the advancement of the trailing side angle σ on the opposite side is not prevented. However, the document paper loading p-ra 4°, which has a weak feeder and a soft roller,
As a result of slipping of the original paper 0 on the corner O1 side and exerting a feeding function on the corner edge side, the original paper 0 is bitten by the row 24 at the side edge of the corner 0' side. In the state of rotating in the direction of arrow V in Fig. 18 about the X part, the leading side angle 0' changes from the position shown in Figs. 16 to 18 by α+β=r.
The distal end of the divided member 1 is moved along the member 14 as shown in Fig. 19 while horizontally rubbing, and the diagonal posture with respect to the conveying direction is at a position where the whole is moved by the dimension β (Fig. 17) from the initial position. This final amount of movement is the actual amount of correction of the lateral deviation of the document sheet 0 by the guide plate 85, and the direction of correction is opposite to that in the case of using only the guide plate 85. Even when the guide plate 85 is in the tilted position shown in FIG. 11, the principle remains the same, and the direction of correction is reversed.

What needs to be noted here is the distance from the document paper carry-in roller 4 to the leading edge alignment member 14. If this distance is small, the manuscript paper 0 conveyed in an oblique position toward the member 14 will be
When the leading side corner 0' comes into contact with the member 14, it moves along the member 14 in the opposite direction to the above, and the oblique posture of the manuscript paper 0 becomes even greater, or in a certain positional relationship,
Since the position of the original paper 0 may not change even if the guide plate 85 is moved, the positional relationship between the roller 4 and the member 14 must be set appropriately.

However, the guide plate 85 causes the sideways scratches on the original paper 0.
The correction of the oblique posture for the object can be omitted as long as the amount of correction for - times is made thinner and smaller, and there is no problem with side effects, and it can also be performed by other means.

Effects According to the present invention, the document paper lateral shift correction means is provided in the document paper repeat-only conveyance path, and the document paper stack lateral shift correction means is located in front of the document paper stack shift correction means in the document paper conveyance direction. In response to the detection signal from
Horizontal scratches are corrected when the original paper is repeatedly transported for multi-copying, and it is always superimposed on the optical paper in the proper position for exposure, resulting in unsatisfactory copies or wasted copies. The paper does not slip, and the original paper and the photosensitive paper can be easily separated after exposure under good conditions. Further, the horizontal scratch correction effect of the original paper does not affect the photosensitive paper, and the photosensitive paper does not become caught, torn, or clogged during transportation or development after exposure.

Furthermore, since the document stack thread correction means is provided in the original paper repeat exclusive transport path that is unrelated to single copying, the document stack thread correction means is always guided so as to cause the original paper to shift horizontally to one side. Since the correcting means necessary for correcting the horizontal deviation of the original paper can be operated in one direction, the original paper tank scratch detection means and the original paper tank deviation correction means can be driven. The means are reduced by half compared to the already known ones.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a copying machine showing one embodiment, FIG. 2 is an enlarged sectional view of the main parts, and FIGS. 3 and 4 are plan views showing an example of a basic document paper machine and a detection means. , FIG. 5 is a plan view showing an example of a particularly improved document paper tank scratch detection means, FIG. 6 is an oblique view of the document paper positioning guide, and FIGS. 7 and 8.
The figure is a perspective view showing the whole and part of the original paper repeater transport unit (having the original paper tank misalignment correction means and its driving means), FIG. 10 is a plan view and a side view showing the normal state S of the original paper tank misalignment correction means and its driving means, and FIG.
FIG.
FIG. 3 is a plan view showing the state of document paper conveyance direction control by the document paper tank misalignment correction means, FIG. 14 is an operation control circuit for the drive means for correcting the document stack deviation by the document paper tank deviation detection means, and FIG. Operation diagram of the control circuit in Fig. 14, 16th
FIGS. 19A and 19B are plan views showing the state of correcting the oblique posture of the original paper loaded with the original paper tank misalignment correction means. 0... Manuscript paper, P... Photosensitive paper, 17... Side light means, 60... Original paper transport path after separation, 61... Original paper repeat transport path (manuscript paper repeat dedicated transport path) , 85...Outer guide plate (manuscript paper stack scuff correction means), 9
6... Solenoid (driving means), 91... Spring applicant Minolta Camera Co., Ltd. Figure 5 Figure 7 Figure 8々 Figure 10 Figure 9 Figure B Figure μ Figure R

Claims (3)

[Claims] (1) In a multi-copy copier that has a manuscript paper repeat transport mechanism for making multiple copies from a single manuscript paper, the machine is located at the 1% repeat-only transport of the manuscript paper, and the manuscript paper that is repeatedly transported is A document paper tray misalignment correcting means is movably provided so as to guide the document paper in a required direction, and a document paper tray slip is located in front of the document paper tray misalignment correction means in the document paper conveying direction to detect horizontal misalignment of the document paper. The present invention is characterized by comprising: a detection means; and a drive means for changing the position of the original paper stack correction means in response to a detection signal from the original paper deviation detection means so as to correct horizontal deviation of the original paper. Automatic document paper tank scratch correction device for multi-copy copiers (2) The document paper type of the multi-copy copier according to claim 1, wherein the document paper tank misalignment correcting means is biased toward a position that guides the document paper so as to cause the document paper to slip to one side in the tank. Automatic scratch correction device (3) Claim II in which the document paper tank shift hydraulic pressure means is a curved guide plate provided on the outside of the curved portion of the document paper repeat exclusive conveyance path! IXJ11 is an automatic document paper tray misalignment correction device for a multi-copy copier described in Section 2.