JPH0212165A - Copying device - Google Patents

Abstract

PURPOSE:To automatically form a document for copying by recycling the document for copying formed from an original document so that many copies may be formed and re-forming the document for copying from the original document when the number of recycling times exceeds the specified times so that copying can be continued with the new document for copying. CONSTITUTION:The electrostatic latent image of a photosensitive body 5 is developed by a developing device 6 to be visible and said visible image is transferred on transfer paper under the operation of a transfer charger 7 at a transferring position. The document for copying formed from the original document is automatically recycled by a recycling system document processor 9, so that the copies can be formed. In such a case, when the number of copies goes to previously set one, the new document for copying is automatically formed from the original document or the document for copying which is in use and copying operation can be continuously performed with the new document for copying. Even in the case of repetitively forming very many copies, the new document for copying can be automatically formed before the document for copying can not be used because it is recycled to be wrinkled and stained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying apparatus having a document processing device capable of repeatedly circulating a document.

2. Description of the Related Art Copying machines equipped with a document processing device that repeatedly circulates documents in a recycling manner are already known as high-speed copying machines that perform large-volume copy processing.

In this type of copying apparatus, a copying process is performed by repeatedly conveying a document in circulation within a conveyance path using a recycling type document processing device.

The conventional copying apparatus described above has a problem in that the document is easily damaged because the document is repeatedly conveyed through the conveyance path within the document processing device many times. If a document is damaged, a process of removing the damaged document or a process of recreating the document becomes unnecessary.

It has already been proposed to make a copy of the original and send the copy to an original processing device for use as the original if damage to the original is to be avoided. Even when copying is performed using a copy original, if a large number of copies are made and the copy original is circulated within the document processing device many times, damage may occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a copying apparatus that can automatically recreate a copy document when a predetermined number of copies have been made when copying a copy document created from an original document.

The present invention solves the above-mentioned problems by, firstly, using a recycling-type original that sends the original from the original tray to the original reading position, reads the original, and then returns the original to the original tray after reading. In a copying apparatus that has a processing device and is configured to be able to switch and convey transferred copy paper between a paper output tray and the recycling-type document processing device, a large number of copies can be made by recycling a copy document created from an original document. This has been achieved by a copying apparatus which is characterized in that when the number of recycled copies exceeds a predetermined number of times, a copy document is recreated from the original document and the copying process is continued with a new copy document.

Second, the present invention solves the above-mentioned problem by having a recycling-type document processing device that feeds the document from the document tray to the document reading position, reads the document, and returns the read document to the document tray again. In a copying device configured to be able to switch and convey copy paper between a paper output tray and the recycling type document processing device, a large number of copies are made by recycling a copy document made from an original document, and the number of copies recycled is large. This was achieved by a copying apparatus characterized in that when a predetermined number of times is exceeded, a copy original is remade from the original copy and the copy process is continued with a new copy original.

According to the present invention, copies can be made by automatically circulating copy originals created from original originals using a recycling type original processing device, and when the number of copies reaches a predetermined number, automatically With the present invention, it is possible to create a new copy original from the original original or the copy original in use, and continue copying with the new copy original.With the present invention, there is no need to worry about damage to the original due to the large number of copies made. It is now possible to automatically create large numbers of copies.

According to the present invention, in a conveying device that conveys copy paper, a paper feeding device is provided with a plurality of paper feeding sections, and one of the paper feeding sections is specified,
The specified paper feed section stores paper for copy originals that is suitable for being circulated and conveyed many times as a document, and when creating a copy document, the paper feed section is automatically switched to the specified paper feed section, and paper for copy originals is stored. It is possible to transport the image using a transport device and make a copy.

Disaster relief■ The details of the present invention will be explained based on embodiments shown in the drawings.

In FIG. 1, a copying machine main body 1 is provided with an image forming device in a known manner, and in the image forming device, image information read from a document by an optical system 2 is charged by a charging charger 3 and then by an eraser 4. An electrostatic latent image is formed by being projected by the optical system 2 onto the photoreceptor 5 from which charges other than the required image area have been erased.

The electrostatic latent image on the photoreceptor 5 is developed into a visible image by a developing device W6, and the visible image is transferred to a transfer paper under the action of a transfer charger 7 at a transfer position.

After the transfer, the photoreceptor 5 is cleaned of residual toner by a cleaning device 8, and the process from charging is repeated again.

A document processing device 9 is disposed above the copying machine main body 1 to convey the document to a reading position where it is read by an optical system 2. Inside the copying machine main body 1, transfer paper is transferred from a paper feeding device 10 to the transfer position and through the fixing device 11. Conveying device 13 that conveys to the paper output tray 12
is provided.

From the paper feeding device 10, the transfer paper is sent by a conveyance guide plate 14 and a feed roller 15, and is sent to a transfer position in time with the photoreceptor 5, where the visible image on the photoreceptor 5 is transferred, The transfer paper is sent to the fixing device 211 by the transport section 16, and the fixed transfer paper is discharged to the paper output tray 12 through the transport path 17. The paper feeding device has a plurality of units, for example two, so that transfer papers of different sizes or qualities can be switched and fed.
Two paper feed trays or cassettes 10a, 10b are provided.

The conveyance path 17 includes a main conveyance path 18 extending from the fixing device 11 to the paper discharge tray 12, and a first conveyance path provided in the middle of the main conveyance path 18.
It has a reversal conveyance path 20 and a return conveyance path 21 that branch at a branch position 19 and extend in opposite directions. Further, at a second branch position 22 of the main transport path 18, a connecting transport path 23 branching from the main transport path 18 is provided.

An intermediate tray 24 is provided at the exit of the return conveyance path 21. The transfer paper housed in the intermediate tray 24 is sent out from the stacked lower transfer paper by a pickup roller 25, is prevented from double feeding by a separation roller 26, is sent to the feed roller 15, and passes through the conveyance guide plate 14. It can be transported to the transfer position in synchronization with the photoreceptor 5.

In the case of double-sided copying, in which both the front and back sides of an original are copied, and in the case of composite copying, in which images of multiple originals are combined and copied, the image is transferred to the transfer paper once, and after it is fixed by the fixing device 11, it is transferred to the return conveyance path 21. The image is temporarily accommodated in the intermediate tray 24, and the visible image is transferred again at the transfer position. When returning to the intermediate tray 24, in the case of double-sided copying, -
By first being guided to the reversing conveyance path 20 and then being reversely guided to the return conveyance path 21, the sheet is conveyed at the transfer position so that the surface opposite to the first time faces the photoreceptor 5, and in the case of composite copying. is a direct return conveyance path 21 from the main conveyance path 18.
The photoreceptor 5 is guided to the transfer position and transported with the same surface as the previous one facing the photoreceptor 5.

The first branch position 19 of the main conveyance path 18 is formed, for example, as shown in FIG. 2, and is a branch point of a cross.

At the first branch position 19, a first roller 27 and a twentieth roller 28, which are pressed against each other, and a switching claw 29 are provided in order to feed the transfer paper sent through the main conveyance path 18. The first roller 27 and the twentieth roller 28 are rollers formed in a dumpling shape and having a plurality of roller pieces attached to a shaft at intervals. It has a plurality of roller pieces arranged between each roller piece of the first roller 27 and shifted in the axial direction of the first roller so as not to contact each roller piece of the first roller 27.
As shown in FIG. 2(A), the roller piece of the 30th roller 30, which is formed in the shape of a dumpling as in 7, enters between the roller pieces of the first roller 27 and blocks the reversing conveyance path 20, and 10
- A position away from the roller 27 and a position where the reversing conveyance path is opened. When the 30th roller 30 is in the position shown in FIG.
Send to 2. At this time, the switching claw 29 is switched to a position where it closes the return conveyance path 21 and guides the transfer paper along the main conveyance path 18.

In the state shown in FIG. 2B in which the 30th roller 30 has moved away from the first roller 27, the transfer paper is
Due to the action of the roller 30, the transfer paper is guided to the reversing conveyance path 20, and is fed while being sandwiched between a pair of reversible conveyance rollers 31 that are in pressure contact with each other, and the trailing edge of the transfer paper leaves the 10th roller 27 and the 20th roller 28. After that, the reversible conveyance roller 31 is reversed, and the transfer pawl 29 is switched to the switching position where the main conveyance path 18 is opened and the return conveyance path 21 is closed, so that the transfer paper is transferred through the main conveyance path 18 in an inverted state. The paper is guided to the paper discharge tray 12 side. As a result, the transfer paper is reversed front to back and front to back and sent to the paper discharge tray 12.

When using the document processing device 9, normally, for page alignment,
Since the transfer paper needs to be sent to the paper discharge tray 12 with the copy side facing downward, it is guided to the -degree reversal conveyance path 20, reversed, and delivered to the paper discharge tray 12 at an IF.

From the state shown in FIG. 2B, the switching claw 28 closes the main conveyance path 18,
When the return conveyance path 21 is switched to the open position as shown in FIG. 2C, the transfer paper is guided to the reversible conveyance path 20 as in the case of FIG. The transfer paper is guided to a return conveyance path 21. In this case, the transfer paper is reversed front to back and front to back and placed on the intermediate tray 2.
This figure shows how the transfer paper is conveyed after the front side is copied in the case of double-sided copying.

At the position 30-ra 30 in FIG. 2A, the switching pawl 29
When only the transfer paper is switched to the position shown in FIG. This shows the transportation mode when multiple images are combined and copied on the same surface.

At the second branch position 22 of the main conveyance path 18, the connection conveyance path 23 branches as shown in FIG. A roller 33 is arranged to open the main conveyance path 18 and connect the connecting conveyance path 23.
The second switching position is switched between a first switching position where the main transport path 18 is closed and a second switching position where the connecting transport path 23 is opened.
A switching claw 34 is provided. As shown by the solid line in FIG. 3, when the second switching claw 34 is in the first switching position, the transfer paper is sent to the paper output tray 12, and when the second switching claw 34 is in the second switching position, the transfer paper is sent to the paper output tray 12. When the conveyance path 18 is closed, the transfer paper is sent to the connecting conveyance path 23. 40th La 32 and 50th La 3
Similarly to the tenth roller 27, the roller 3 can be formed as a dumpling roller.

Although the paper discharge tray 12 is simplified in the figure, it can be a shift tray that can collate copies by number of copies.

The document processing device 9 disposed on the copying machine main body 1 is formed as a recycling type document processing device (abbreviated as RDH).

In FIG. 4, the RDH 9 is provided with a first document tray 35. As shown in FIG. The original is placed in the first original tray 35 with the image side to be copied facing down! ! The document is placed one by one from below by the paper feed roller 36 driven by the operation of the first clutch 65. The original sent from the first original tray 35 is moved to a predetermined position on the contact glass 40 of the copying machine main body 1 by a transport drive roller 37 driven by a first drive motor 66 and a transport belt 39 wrapped around the transport roller 38. sent to the reading position. At the reading position, the scanner 41 of the optical system 2 exposes the light.

The original after exposure reading is sent to a horizontal conveyance path 44 through a return path 43 formed by a branch claw 42 . In the horizontal conveyance path 44, the document is fed by a first feed roller 45 and a second feed roller 46 driven by a second drive motor 67.

The terminal end of the horizontal conveyance path 44 is curved into a U-shape, and the document in the horizontal conveyance path 44 is reversed and sent to the second document tray 47 .

A third document tray 48 is arranged below the second document tray 47, and the end of the connecting conveyance path 23 of the conveyance device 13 is placed at the entrance of the third document tray 48, and the transfer paper from the main conveyance path is connected to the entrance of the third document tray 48. The documents are arranged so that they are turned over so that the copy side faces downward and are fed onto the third document tray 4.

A branch path 49 is provided in the middle of the horizontal transport path 44 to circulate and transport the original in the same state as the first one above the first original tray 35, and a second branch claw 50 is a solid line that guides the original to the second original tray. It is arranged so as to be able to switch between the switching position shown in FIG.

Normally, the original document 51 is set on the first document tray 35 with the document surface facing down.

The originals are fed one by one by the paper feed roller 36, exposed on the contact glass 40 by the scanner 41, passed through the return path 43, and sent to the first original tray 35 by the second branch claw 50 from the horizontal transport path 44. It will be done. In this case, the first document tray 35 serves as both a paper feed tray and a paper discharge tray, and can automatically feed the returned document again. This allows copies to be made while circulating the original.

This is the same as in the past, and some originals may be damaged during repeated circulation. In order to avoid this, in the present invention, after exposure, the original document is sent to the second document tray 47 by the horizontal conveyance path 44, and can be stored therein.

Do the same for the second and subsequent original manuscripts.
The document is stored in the document tray 47.

On the other hand, the transfer paper on which a copy has been made from the original document by image formation and transfer passes from the main conveyance path 18 of the conveyance device 13 to the connection conveyance path 23 that branches off at the second branch position 22, and is copied to the third document tray 48. It can be fed face down, stored and used as a document.

When making a second copy of the same document, the copy process is performed using the transfer paper 52 housed in the third document tray 48 as the document, without using the original document. The transfer paper in this case is called a copy original 52.

In order to make a copy of a double-sided original, the original after the front side has been exposed is once sent to the horizontal transport path 44, and the trailing edge of the original is sent to the return path 4.
9, before reaching the first feed roller 45, the first sensor 53
, for example, when detected by a switch, then the branch claw 4
2 to the position shown by the chain line in FIG. 4 by the action of a solenoid (not shown), the first feed reroller 45 is reversed, the document is guided by the guide plate 56, and sent to the reversing path 54.
By reversing the reversing roller 55 provided at 4 and driven by the third drive motor 68, the original is sent directly from the reversing path 54 through the guide plate 57 onto the contact glass 40. The document is thereby sent with its back side facing down, and is sent to a predetermined reading device by the conveyor belt 39, which is rotated in reverse by the reverse rotation drive of the first drive motor 66.

The operation of the device according to the present invention will be explained.

Normally, in the control device, it is determined whether the document is manually fed or automatically processed by RDH according to the flow shown in FIG. copies are made. Details are omitted.

When using RDH, the number of copies is read and it is determined whether the number is three or more.

Although it is possible for the operator to specify whether to create multiple copies by circulating the original original or by creating a copy original using a key, etc., it is also possible to specify by keys etc. in advance. When the number of copies is to be made, for example, three or less, the original original is used, and when the number of copies is more than three, it is possible to automatically switch to making copies using the copy original. An example of presetting the number of copies to be used will be described.

The number of copies to be made can be selected based on the efficiency of working time when making copies and the probability of damage and staining of the original original. 3 pieces is 1
I just gave one example.

When the number of copies is three or less, the copy original creation flag is cleared and copies are created using the original original. At this time, the original document is sent from the first document tray 35 as described above and circulated to the first document tray 35 by the second branch claw 50 from the middle of the horizontal conveyance roller 44 .

When the number of copies exceeds three, a copy original creation flag is set.

When it is determined by subroutine 5UBIIO shown in FIG. 6 that the copy original creation flag is set,
It is determined whether there is a copy document on the third document tray 4, that is, in the intermediate document tray. In other words, the second sensor 5
8, it is determined whether or not a signal indicating that a copy document is present in the third document tray is output.

A copy original is set on the third original tray on the 4th, and the first
Until it is detected that there are no originals on the original tray 35, the copying process is performed using the original original on the first original tray 35 according to the main routine. In this case, the original document after being exposed by the scanner 41 is sent to and stored in the second document tray 47. When a copy original is set on the third original tray 48 and there are no originals on the first original tray 35, the copy original selection flag is set.

When starting the copying process, whether the number of copies is 3 or less or more than 3, the copy creation mode is determined by subroutine 5UB170 in FIG. 16 and subroutine 5UB180 in FIG. , composite copy, or double-sided copy.

When it is determined that it is a normal one-sided copy, normal copying is performed by a main routine (not shown).

When creating a copy original, if necessary, if it is determined that the copy original creation flag is ON by subroutine 5UB120 shown in FIG. 7, the first feeding tray selection flag is set and the transfer paper is loaded. Paper is fed from the first feeding tray.

One tray or cassette among the plurality of paper feed trays or cassettes provided in the paper feed device 10, the first paper feed tray 10a in this embodiment, is suitable for copy originals that can withstand the process of making multiple copies. For example, the copying machine should set paper that is stronger than normal copy paper, and the copying machine will preferentially use this first paper when creating copies.
The configuration is such that a feed tray is selected and transfer paper is fed from the first feed tray.

When the copy document creation flag is set and there is no document in the intermediate document tray, that is, the third document tray 48, a copy document creation process begins, and the transfer paper on which the image of the original document is transferred from the photoreceptor 4 at the transfer position is transferred. 1st after establishment
The document travels straight through the branch point Wt 9, is guided by the second switching claw 34 to the connected conveyance roller 23 at the second branch point Wt 9, and is stored in the third document tray 48 as a copy document. 1st
The copying process continues until all original documents placed in the document tray 35 are copied.

When a copy original is set on the intermediate original tray 48 and the third sensor 59 of the first original tray 35 determines that there are no original originals on the first original tray 35, a copy original selection flag is set (sixth figure).

In the process of creating a copy original, copying from the original original is continued unless it is determined in subroutine 5UB130 shown in FIG. 8 that a jam has occurred, and the original original after copying is stored in the second original tray 47.

When copying an original document, the number of copied documents is determined by a paper feed counter, for example, the fourth sensor 6, when the document is fed from the first document tray 35.
0 is detected, and the number of paper feeds is added to the original sheet number counter m. Determine whether there is a document in the first document tray 35 by subroutine 5UB150 shown in FIG.
When all the original documents have been fed from the first document tray 35 and the third sensor 59 detects that there are no documents left, the final count m is stored in the document number memory m' and the document number counter m is set to 0. set and transfer permission flag a from the third document tray 48 to the first document tray 35
Set. On the other hand, by subroutine 5UB150,
When it is determined that there is no document in the first document tray 35, it is determined whether it is okay to feed the paper, that is, it is determined whether the conveyance permission flag a is set, and when a command indicating that it is OK to feed the paper is issued. feeds paper.

That is, when it is determined by subroutine 5UB151 in FIG. The document is sent onto the first document tray 35. When the paper is fed, subroutine 5UBI50 determines whether the number of fed sheets m matches the number of stored original documents, that is, the number of original documents memory m', and if they match, it is determined that the feeding has ended. If they do not match, the fifth sensor 61 detects the feeding of each sheet and adds 1 to the original sheet number counter m to continue feeding the original.

Further, when it is determined by the subroutine SOB 152 in FIG. 12 that the conveyance permission flag a is set, it is determined whether the conveyance has been completed, and the subroutine 5UB15 is executed.
0, it is determined that the number of sheets of the copy original to be transported is the same as the original number memory m', that is, when it is determined that the transport has ended, the transport permission flag is cleared.

When the copy document creation is completed and the copy document selection flag is set in FIG. 6, the subroutine 5UB140 shown in FIG. continues to make copies, and when the 1-cycle copying operation ends, it means that all originals have been copied, so subtract 1 from the number of copies n and determine whether the number of copies has reached 30. .

On the other hand, the subroutine 5UB160 shown in FIG. 13 determines whether the copy original creation flag is ON or not, and if the copy original creation flag is set according to the subroutine 5UB100 shown in FIG. 5, the original size is read by a sensor etc. , also reads the copy paper size, determines whether the original size and copy size, for example, the transfer paper size, are the same, and if they are different, calculates the magnification, and if they are equal, the magnification data is handled according to the order of the original without changing the magnification. For example, as shown in Figure 14, an area is reserved in the RAM area for each order of originals, and in that memory, the copy size and the magnification that makes the copy original size constant according to the original size are stored respectively. . Then, a copy original is created in the same size.

Normally, copy originals are created on paper of the same size, so if the original originals have different sizes, the magnification is calculated according to the difference in size of each original, and the copy original creation process is performed as images with different magnifications. A copy document of the same size is created.

When creating a copy manuscript, the subroutine SU shown in FIG.
The subroutine SOB 1 shown in FIG.
When it is determined in step 80 that the document is not a double-sided document, a copy document is created from the original document through normal copying processing according to the main routine.

In the subroutine 5UB120 shown in FIG. 7, when a paper feed tray is specifically selected, copying is performed on the selected copy document paper fed from the selected paper feed tray. The created copy document is guided to the connecting conveyance path 23 at the second branch point 22 of the conveyance path 17 of the conveyance device 13 of the copying machine main body, and is accommodated in the third document tray 48 of the RDH 9 . When the copy document creation process is completed, a copy creation mode flag is set in subroutine 5UB160.

If the copy original is a composite copy, subroutine SUB
At step 170, it is first determined that the first original document, that is, the first side is to be copied, and the conveyance flag b to the main body intermediate tray 24 is set, and copy processing is performed. The copy document created from the first original document is stored in the intermediate tray 24 through the return conveyance path 21 at the first branch point 19 of the conveyance path 17 of the conveyance device 13 of the copying machine main body, and the conveyance flag b is cleared. Next, it is determined that the second original document is a copy on the second side, and the conveyance flag C to the third document tray 48 is set.
Copy processing is performed on the copy original supplied by the second
A copy of the original document is made and transported to the third document tray 48 through the connecting transport path 23 in the second branching and turning.

When the composite copy original is stored in the third original tray 4, the conveyance flag C is cleared.

When copying double-sided originals, subroutine 5 shown in FIG.
The UB 180 first determines whether or not it is a front side copy, and if it is a front side copy, normal copying processing is performed as is, and the document is conveyed to and stored in the third document tray 48. When the conveyance of the front side copy to the third document tray 48 is completed, the conveyance flag C is cleared.

If it is determined that the copy is not a front copy but a back copy, the original is reversed. That is, the original document after making a front side copy sent by the conveyance heald section 39 is transferred to the branch claw 4.
2 to the horizontal conveyance path 44, and after the trailing edge of the original document being sent by the first feed roller 45 driven by the third motor 67 is detected by the first sensor 53, the second drive is performed after a certain period of time. The first feed reroller 45 is reversely driven by the reverse rotation of the motor 67, and the original document is reversely fed with the branch claw 42 switched to the position shown by the broken line by the action of a solenoid (not shown). The original manuscript is the third
The original document is sent to the reversing path 54 by the reversing roller 55 driven by the drive motor 68, and after a predetermined time, the reversing roller 55 is reversed by the reversing drive of the third drive motor 68, and the original document is turned over from the reversing path 54. The contact glass 40 is sent to a predetermined position on the contact glass 40 by the transport heald 44, which is being rotated in reverse by the reverse rotation drive of the first drive motor 66, and then stopped.

After this document reversal process is completed, the original document is copied, and the back side of the document is copied.

When the back side copying is completed, the copy original whose back side has been copied is stored in the third document tray 48 in the same manner as described above.

When the conveyance of the back side copy to the third document tray 4 is completed, the conveyance flag C is cleared.

In this way, the front and back copy originals of a plurality of original originals are stacked on the third original tray 48 in the order of the front side copy original, the back side copy original, the front side copy original, and the back side copy original, as shown in FIG.

Creating double-sided copies from single-sided copied originals is extremely time-efficient when a large number of copies are required. Note that after copying is completed, the copied original becomes unnecessary.

As another example, only the front side of the original document is first copied, and the front side copy document is stored in the third document tray 48,
Next, a back copy document is created using the reversed original document, and the back copy document is transferred to the third document tray 48.
It is also possible to store the front side of the original on top of the original.

Further, the copy document itself can be formed as a front and back copy.

When the copy document creation process is finished and the copy creation mode flag is set, subroutine 5UT31 in FIG.
Copy magnification calculation for calling up the magnification data for each document No. and document Nα stored in 62, reading the size of the copy document, and returning the image size to the image size of the document from the stored image information. Perform (copy original size) XI/(magnification data), select copy paper of the same size as the original, and start copying. At this time, the subroutine SUB 1 B shown in FIG.
2, it is determined whether the copy is a double-sided original. In the case of composite copying, the copy is made based on a copy original that has already undergone composite copying, so it can be processed in the same way as simple one-sided copying.

For one-sided copying, subroutine 5UB16 in Figure 15
In the second copy creation step, copy creation processing is performed normally.

In the case of double-sided copying, subroutine 5UB1 in Figure 19
In B2, it is determined whether the original is a double-sided original or not, and if it is a single-sided original, once copying of one of the single-sided originals, that is, the front side, is completed, the copy paper is stored in the intermediate tray 24 in an inverted state at the first branch point 19. , a copy of the next single-sided original, that is, a back-sided original, is copied onto the copy paper sent out from the intermediate tray 24. The copy paper that has been subjected to double-sided copying is discharged to the output tray. By repeating this process, a predetermined number of double-sided copies are made. That is, one-sided → double-sided copy processing is performed.

In the subroutine SUB l82 of FIG. 19, it is determined whether the original is a double-sided original, and if it is a double-sided original, it is determined whether the copied original is single-sided or not. Make a double-sided copy. If the original to be copied is double-sided, a copy of the front side is first made, and the front side copy is stored in the intermediate tray 24 in an inverted state at the first branch point 19.Then, the original to be copied is reversed, and then the original is transferred from the intermediate tray 24. The back side of the fed copy paper is copied. The copy paper that has been copied on both sides is ejected to the ejection tray. By repeating this process, a predetermined number of double-sided copies are made. In other words, double-sided → double-sided copy processing is performed.

To create a copy from a copy original, a subroutine SUB 140 shown in FIG. It is determined whether the number of times or more has been reached. This predetermined number of times is set based on the number of times that the copy document can be used.

When the number of copy cycles n exceeds 30, it means that the usage limit of the copied original has been reached. Therefore, you will have to recreate the copy original, but if there are only a few remaining copies,
You can continue copying and do not need to create a new copy. This way, copying can be completed in a shorter time. In this example, 3 sheets is set as the delimiter for whether or not to re-create the copied original. Determine whether the number of copies remaining is 3 or more. If it is 3 or less, continue making copies until the copy is completed. If the number of copies remaining exceeds 3, there is a risk that the copied document may be damaged. , set the original creation flag and create the copy original again. The copy original is created in the same manner as described above.

The current copy document discharge flag is set, the used copy document is discharged to the second document tray 47, the copy document discharge flag is cleared, a new copy document creation process is performed, and the copy document creation flag is cleared.

It is also possible to manually put the ejected copy original into the paper ejection tray 12 and use it as a copy. It should be noted that the used copy original is automatically switched and branched from the horizontal transport path 44 to the transport path to the second original tray 47, and an extension formed as an extension of the horizontal transport path 44, for example, as shown by the chain line. It can also be formed so as to be guided to the paper discharge tray 12 through the conveyance path 44a.

After the copy original is created, the copy original creation flag is cleared, and copy creation is continued using the new copy original as described above. It is not necessary if there are less than 30 copies, but there are 3 more copies left.
If the number of copies is 0 or more, for example, if the total number of copies is 60 or more, the subroutine SUB 140 re-creates the copy original as necessary to create the remaining copies.

The copy document can be recreated by moving the original document in the second document tray 47 to the first document tray 35;
There is a method of creating a copy from the copy manuscript currently in use.

If a jam occurs during copying due to the copy original, the jam is detected by the actions of the first sensor 53, second sensor 5, sixth sensor 62, eighth sensor 64, etc., and the subroutine 5UB130 shown in FIG. A jam display is displayed, and the number of copied originals in which the jam occurred is memorized and notified. If a jammed original is removed and the copied original cannot be used anymore, it is necessary to create a copy of the original. When the copy key is pressed in the jam-cleared state, a copy original creation flag is set, a copy original is created in the above-described manner, and the copy original creation flag is cleared.

For example, if a jam occurs when making the fifth copy, it will remember that the copy original that caused the jam is the fifth copy, and
When the copy key is pressed, a copy original creation flag is set and a copy original creation process is performed. That is, after clearing the jam, all copy documents on the first document tray 35 are transferred to the second document tray 35.
It is sent onto the original document in the document tray 47. That is, all the copied documents are temporarily stored in the second document tray 47.

Next, by starting copy manuscript creation, the original manuscript is
Under the count by the seventh sensor 63, all
The copy document is sent to the document tray 35, and at this time, the copy document remains accommodated in the second document tray 47. 1st original tray 3
The first four original documents of No. 5 original documents are returned to the second document tray 47 as they are, and are stacked on top of the copy document. The above copy manuscript is created using the fifth original manuscript. The completed copy original is stored on the third original tray 48.

There is no need to create a copy manuscript from the 6th page onwards, so the first page
The original document on the document tray 35 passes over the contact glass and is stored on the second document tray 47 above the copy document. When all the original originals are stored in the second original tray 47 and a copy original 11& is created to replace the jammed and unusable copy original 11, the mode returns to the copy creation mode and the remade fifth sheet is placed in the third original tray 48. The copied original is sent to the first original tray 35 , and then the copied original below the original original on the second original tray 47 is sent onto the first original tray 35 .

All copy originals are stored in the first original tray 35, and copying is resumed.

When a jam occurs, a copy of the jammed original is automatically created as described above, whereas an operator creates the original original for the jammed copy of the original through the contact glass 40.
After setting the copy on the top of the page and pressing the copy button, the copy is stored in the third document tray 48, and then the copy is stored in the third document tray 48.
It is also possible to accommodate the copy document on the top of the first document tray 35. At this time, it is also possible to make a necessary number of copies and store one of them in the third document tray 48. The original document on the contact glass is displayed so that the operator can remove it.

According to the present invention, even when a large number of copies are repeatedly made, a new copy original can be automatically created before the copy original becomes wrinkled or dirty due to recycling and becomes unusable. , even if a large number of copies were made, the original manuscript would be remade before it was damaged, resulting in clear copies.

Furthermore, by using paper that is stronger than normal copy paper as a copy document, it has become possible to extend the life of the document.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic diagram of the copying apparatus according to the present invention, and FIG. 2 is a schematic diagram showing the structure of the first branch point of the copy paper conveyance path.
A), (B), and (C) are diagrams showing different states of the feeding path and the switching position of the switching claw, respectively. Figure 3 is a schematic diagram of the structure of the second branch point. Figure 4 is a diagram of the recycled document processing device. , Figure 5~
Figures 13 and 15 to 17 and 19 are flowcharts showing the subroutines for copy original creation and copy creation, Figure 14 is a diagram showing the relationship between original size and magnification data, and Figure 18 is for double-sided copying. FIG. 3 is a diagram illustrating an example of the arrangement of copied originals on a first original tray; 1...Copy machine main body 9...Document processing device lO・
... Paper feeding device 12 ... Paper ejection tray 13 ... Conveyance device 23 ... Connection conveyance path (1 other person) Fig. 8 Horizontal 111i'Fir flag Old figure

Claims (1)

[Claims] (1) It has a recycling-type document processing device that sends the document from the document tray to the document reading position, reads the document, and returns the read document to the document tray again, and transfers the copy paper after transfer to the paper output tray and the recycling-type document processing device. In a copying device that is configured to be able to switch between a document processing device and a document processing device, a large number of copies are made by recycling copies made from an original document, and when the number of copies recycled exceeds a certain number of times, the number of copies becomes larger than the original document. A copying apparatus characterized in that a copy original is remade and copying processing is continued using a new copy original. (2) It has a recycling-type document processing device that sends the document from the document tray to the document reading position, reads the document, and returns the read document to the document tray again, and transfers the copy paper after copying to the paper output tray and the recycling-type document processing device. In a copying device that is configured to be able to be switched and conveyed with a document processing device, a large number of copies are made by recycling the copy document created from the original document, and when the number of copies recycled exceeds a certain number of times, the copy document is A copying apparatus characterized in that a copy original is recreated and the copying process is continued using a new copy original. (3) Specify in advance a paper feed device that stores a specific paper suitable for the copy document, automatically select the specific paper feed device when creating the copy document, and copy the document using the paper stored in that paper feed device. 3. The copying apparatus according to claim 1, wherein the copying apparatus creates a copying apparatus.