JPS60113226A - Copying machine - Google Patents

Abstract

PURPOSE:To perform one-surface copy processing of both-surface originals automatically in a copy state wherein pages are put in order, and eliminate the need for post processing for page rearrangement by conveying the both-surface originals and transfer paper along a specific. CONSTITUTION:A copying machine is equipped with an automatic supply device which sends plural both-surface originals 34 set at a paper feed part 30 onto the platen 3 at an exposure part, sheet by sheet, successively from the lowermost sheet and returns them onto the uppermost sheet after exposure, an intermediate tray 19 which stores copied transfer paper 8a temporarily and refeeds them to a photosensitive body 5, etc. Then the machine performs 1st-cycle processing wherein the originals 34 at the paper feed part 30 are sent onto the platen to copy top pages of both-surface originals and returned to the paper feed part through recycle conveyance paths 45-47 and the paper 8a is sent into the tray 19. Then, the 2nd-cycle processing wherein the originals 34 returned in an inverted state are sent onto the platen 34 successively, white transfer paper 8 is sent for every other sheet of copied paper 8a discharged from the tray 19, and the reverse page of the both-surface original is copied on the white transfer paper to discharge the transfer paper is carried out to take a one-surface copy of a both- surface original.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a copying machine equipped with an automatic document feeder.

2. Description of the Related Art Conventionally, some copying apparatuses are equipped with an automatic document feeder in order to automate and facilitate document processing. This is the so-called ADF (Auto Doc-ument).
This is a device that automatically feeds a plurality of documents set in a paper feed section onto a contact glass one by one, and discharges the documents to a paper discharge tray after exposure processing is completed. In this case, in order to process thin originals, interrupt copy processing, etc., manual paper feeding can be performed instead of automatic paper feeding using the paper feeding unit. This is the so-called S.A.
D F (SemiAu7o D ocumer+t
It is a feeder function. In such an ADF, when a plurality of copies are requested, a sorter is connected to the copy paper ejection section, thereby making it possible to obtain a plurality of sorted copies.

On the other hand, as an automatic document feeder, it is not an ADF method,
In order to provide a sorter-like function and eliminate the need for a sorter even when copying multiple copies, the document is fed from the paper feeder onto the contact glass, exposed, and fed again through a loop-shaped conveyance path. Some have been returned to the paper department. This is the so-called RADF (Recirculati
ng Autc Docu-mar+t F eade
r) method.

In such a RADF system, if a reversing function is provided and the original is returned to the paper feed unit in an inverted state, it becomes possible to process five-sided originals and one-sided copies. That is, it is considered that the front page of the double-sided document is copied in the first reverse stitch, and the back page of the double-sided document is copied in the second reverse stitch. However, according to this method, when looking at the state of the ejected copy, it is found that the state of the ejected copy is 1°3.5. ..., (n-1), 2, 4. ...,
2n pages, the page order is irregular, and post-processing is required.

Purpose The present invention has been made in view of the above points, and provides a copying apparatus that can easily perform double-sided original to single-sided copy processing automatically and with the page order aligned without requiring post-processing. The purpose is to obtain.

composition An embodiment of the present invention will be described based on the drawings.

FIG. 1 schematically shows the overall configuration, which basically consists of a copying machine 1 capable of double-sided copying and an automatic document feeder 2.

First, in the copying machine 1, an original on a contact glass 3 serving as an exposure section is exposed by an optical system 4 to form a latent image on a photoreceptor 5, and this is developed. Then, the transfer paper 8 fed from the cassette 7 by the paper feed roller 6 is sent to the transfer section 10 at the right timing by the registration roller 9, and is transferred.
The fixing unit 11 fixes the image. A reversing device M12 that selectively operates is provided downstream of the fixing section 11. This reversing device 1
2 consists of a three-roller pair 13 and a reversing path 14 as is well known, and if the two upper rollers (displaceable in the direction of the arrow) of the three-roller pair 13 open the reversing path 14 as shown in the figure. The transfer paper 8 enters this reversing path 14 and is reversed and conveyed, but if the reversing path 14 is closed, the transfer paper 8 simply passes through without being reversed. A conveyance path 16 facing the ejection roller 15 side is provided at the rear stage of the reversing device 12, but a bypass conveyance path 17 directly connected to the registration roller 9 side is also provided, and the both-side conveyance path 16 and 17 are provided. A switching claw 18 for switching selection is provided. Also, conveyance path 1
An intermediate tray 19 is provided below the transport path 16, and a switching claw 20 for selectively switching between the discharge roller 15 side and the intermediate tray 19 side is provided on the right end side of the conveyance path 16. A paper ejection tray 21 is provided on the right side of the ejection roller 15. On the other hand, the intermediate tray 19 is used to re-feed the stored copied transfer sheets 8a starting from the lowest one with a paper feed roller 22, but although they are normally separated from each other, in special cases to be described later, An auxiliary paper feed roller 23 is also provided which can feed the uppermost transfer paper in contact with the upper transfer paper 8a.

On the other hand, the automatic document feeder 2 basically includes a paper feed section 30, a conveyor belt section 31, and a paper discharge tray 32 as a paper discharge section, and has an ADF function.

Furthermore, it also has RADF function and 5ADF function.

First, regarding the paper feed section 30, a paper feed tray 33 on which a plurality of original documents 34 can be stacked is provided.

When setting, the document 34 is positioned by adjusting the side guides and end plates according to the size of the document 34. A part of the paper feed tray 33 has a calling belt 35 that contacts the lowest document 34, and a calling roller 36 and an entrance gate plate 37 are provided on the leading edge side of the document. The originals 34 fed by the calling belt 35 and the calling roller 36 are sent to the separation rollers 38, and only the lowest original 34 is sent to the pinch rollers 39 by the separating and conveying action thereof. This pinch roller 39 feeds the original 34 onto the contact glass 3. Here, if the leading edge of the document is on this pinch roller 39
When the sensor 40 detects that the device is caught in the
The rotation of the document 8 is stopped, and the document 34 is moved by the pinch roller 39.

Next, a conveyor belt 41 constituting the conveyor belt section 31 is provided on the contact glass 3, and the document 34 fed by the pinch roller 39 is moved onto the contact glass 3 by the conveyor belt 41 to a predetermined exposure position. is transported and set to stop. Then, when the exposure process is completed, the sheet is discharged and conveyed rightward by the conveyor belt 41 again.

On the right side of this conveyor belt 41 is a discharge guide 42 that points towards the paper discharge tray 32. A discharge roller 43 is provided.

44 is a sensor that detects the ejection of the original 34 from above the contact glass 3.

Further, on the conveyance belt 41, a return conveyance path 47 is formed, which is composed of a return guide 45, return belts 46a to 46e, etc., and extends from the rear stage of the conveyance belt 41 toward the paper feed tray 33 side. Therefore, a switching claw 4 is provided after the conveyor belt 41 to selectively switch between the discharge roller 43 side and the return conveyance path 47 side.
8 is provided. Therefore, if the switching claw 48 is in the solid line position, the document 34 will move toward the discharge roller 43, but if it is in the broken line position, it will enter the return conveyance path 47.

Here, the discharge roller 43 is freely reversible and has a reversing function. That is, the document 34 is sent to the paper output tray 3 as usual.
It is also possible to eject paper onto 2.

After the trailing edge of the document 34 passes through the switching claw 48, it can be temporarily stopped, and then the discharge roller 43 is rotated in the reverse direction to send the document from the trailing edge side to the return roller 46a and, therefore, to the return conveyance path 47. That is, it is reversed in order to cancel the reversal function between the contact glass 3 and the return roller 46a in the return conveyance path 47. For this purpose, a single reversal guide 49 is provided.

Furthermore, with respect to the return conveyance path 47, a conveyance path 50 is formed from the return roller 46d portion toward the left end side of the contact glass 3 by a turn guide 51, and can be selectively switched to the return roller 46e side by a switching claw 52.

Next, at the upper part of the return conveyance path 47, a manual feed port 54 is provided which is directed toward the return roller 46d by a manual feed guide 53. When the original 34 is manually inserted into the manual feed slot 54, the sensor 55 detects the insertion of the original, and the stop finger 56, which regulates the position of the leading edge of the original, is retracted and the upper pinch row is activated.

The roller 57 is displaced downward and comes into contact with the lower pinch roller 57, and its rotation sends the document 34 to the return roller 46d and the conveying path 50 side, so that it can be fed onto the contact glass 3. Such a manual paper feeding section 58 is provided so as to be selectable from the paper feeding section 30.

Note that 60 is a reader that reads data on a job sheet set on the paper feed tray 33 together with the original 34 .

According to such a configuration, in the automatic document feeder 2, the second
As schematically shown in the figure, various conveyance paths can be selectively formed. First, in FIG. 3(a), documents 34 set in the paper feed section 30 are transported one by one from the lowest one to the paper ejection tray 32 via a straight route from the contact glass 3 to the ejection roller 43. This path is referred to as an automatic document feed conveyance path (hereinafter referred to as the ADF conveyance path) 61.

In addition, (b) to (d) in the same figure show three types of recycling conveyance paths (
(hereinafter referred to as the RADF transport path). First, the same figure (b
), the documents 34 set in the paper feed section 30 are fed and conveyed one by one from the lowest one through the contact glass 3 → the return conveyance path 47, and the document 34 in the paper feed section 30 is transferred to the top; The -th RADF conveyance path 62 is shown. At this time,
The original 34 is returned to the paper feed section 3° in an inverted state by the reversing action of the return conveyance path 47. Next, in FIG. 3(c), the original 34 is once sent from the contact glass 3 to the ejection roller 43, and this ejection roller 43 is reversed to return the original 34 from the rear end side through the conveyance path 47 and back to the paper feed path 3o. 2RA
The DF transport path 63 is shown. That is, the reversing action in the -RADFIII feeding path 62 is canceled out by the discharge roller 43, and the document 34 is returned to the paper feeding section in its original state. In the same figure (d), the document 34 sent to the return conveyance path 47 by the second RADF conveyance path 47 method is turned in the conveyance path 50 to be re-fed onto the contact glass 3, and then the document 34 is fed back onto the contact glass 3.
It shows a third RADF conveyance path 64 that returns to the paper feed unit 30 along the same route as the RADF conveyance path 62.

There are various required copy processing modes as follows.

A1... Single-sided original - Single-sided copy (- copies) A2... Single-sided original - Single-sided copies (multiple copies) B1... Single-sided original - Double-sided copies (- copies) B2... Single-sided original - Double-sided copies (multiple copies) C1... Double-sided original - one-sided copy (- copies) C2... Double-sided original - one-sided copy (multiple copies) Dl... Double-sided original - double-sided copy (- part) B2... Double-sided original - double-sided copy (multiple copies) E ...Manual copying processing such as jam recovery, interrupt copying, etc.F...Copying processing of books or thick originals In this way,
There are various copy processing modes, which can be processed by selecting each of the transport paths described above. Here, the copy modes that can be processed in each transport path are shown.

[1] ADF transport path 61 use A1. Each mode processing of B1 [2] Each mode processing of C1, C2, Dl, B2 using the 1st-RADF conveyance path 62 [3] Second RA
DF conveyance path 63 use A2. B1. B2 mode processing [4] Using the third RADF transport path 64 Cx + C2, Dl, B2 mode processing Copy mode E is the 5ADF mode, and is generally used for jam recovery, interrupt copying, and copy processing of thin originals. etc., it is carried out in any mode from A1 to D2. Further, the processing in copy mode F will be explained separately.

As described above, the correspondence between each transport path and each copy mode is taken, but the processing operations are not necessarily the same, so the processing operations will be explained separately for each copy mode below.

A1...Single-sided original - one-sided copy (partial) mode ADF
It is processed by using the conveyance path 61 (see FIG. 2 (8)).

First, a plurality of originals 34 are set on the paper feed tray 33 with the originals facing down in page order. In this case, if several groups of documents with different processing contents are to be processed consecutively at once, a job sheet containing data of the work contents is inserted into the group separation section, and the data is transferred to the reader 60. It reads and gives commands such as enlargement/reduction copying, partial copying/multiple copying, etc. to the copying machine 1, etc., and operates accordingly. When the copying operation is started, the first job sheet set at the lowest position is fed from the paper feed section 30, simply conveyed over the contact glass 3, and ejected onto the paper ejection tray 32. (Job data may be read during this transport). Next, the lowest original document 34 is fed from the paper feeding section 30 and conveyed and set at a predetermined position on the contact glass 3 by the conveyance belt 41. After exposure processing is performed by the optical system 4, the paper is discharged onto the paper discharge tray 32 by the discharge roller 43 through the discharge guide 42. The same operation is repeated, and when the next job sheet appears, the work content is changed according to the data,
The next document group is processed in the same way. and,
When it is detected that the document 34 on the paper feed tray 33 is no longer present, a command is issued to finish the series of copy operations, and the copy operation is completed (first, a job sheet for finishing the job is placed at the bottom of the document). (It may be set in advance and stopped upon detection.) The original 34 is ejected to the ejection tray 32 in the same state as that set on the paper feed tray 33. On the other hand, the copying machine 1 also performs a normal copying operation in this mode, and the transfer paper 8 is discharged onto the paper discharge tray 21 in page order with the copy side facing down. That is, A, DF processing is performed.

Now, consider a case where a transfer paper jam occurs in the copying machine 1 in this processing mode. In this case, first, the apparatus is stopped and jam processing is performed to remove the jammed paper. At this time, the document corresponding to the jammed transfer paper, the next document, etc.
Since about three originals have already been fed from the paper feed tray 33, it is necessary to re-feed these two or three originals related to the jam. Therefore, for these jam-related documents, interrupt copy processing is performed using the 5AI)F function.

That is, the processing is performed using the single manual paper feeding section 58. First, the original 34 is inserted through the manual feed slot 54 with the original side facing up. At this time, the pinch rollers 57 are separated from each other at the top and bottom, and the leading ends of the pinch rollers 57 are regulated by the stop fingers 56 that protrude into the conveyance path.

When the sensor 55 detects the insertion of the document, an interrupt is generated and the A1 mode (the same applies to other modes) is interrupted, the top and bottom of the pinch roller 57 contact and rotate, and the stop finger 56 is retracted. The original 34 is sent toward the return roller 45d. Here, the switching claw 52
is at the solid line position, and the original 34 is sent to the conveyance path 50 by the return roller 46d and is rotated until it reaches the contact glass 3.
Head up. Thereupon, it is conveyed and set at a predetermined position on the contact glass 3 by the conveyor belt 41, and subjected to exposure processing to make a copy. When the copying is completed, the paper is moved to the paper discharge tray 32 along the ADF transport path 61, and when the processing by the 5ADF function is completed, the interrupt is canceled and the A1 processing mode is restarted.

Jam recovery is performed in this way, and the page order of the original 34 and the transfer paper 8 on the paper discharge tray 32.degree. 21 is not disturbed.

On the other hand, even if a document jam occurs in the automatic document feeder 2, the jammed document is first removed. At this time, if the jam position is the pre-exposure position, no copy has been made for the jammed original, so the jammed original can be
Interrupt copy processing is performed by the ADF function (E-mote), and then the A1 processing mode is restarted. Furthermore, if the jam position is the post-exposure position, a document corresponding to this jammed document has already been created, so the removed jammed document is returned to the paper output tray 32, but it has progressed to the contact glass 3, etc. Perform interrupt copy processing for the next document and restart A] processing mode.

A2... Single-sided original - single-sided copy (multiple copies) mode Processed by the second RADF transport path 63 (see FIG. 2(c)).

The basic copy operation is an A1 one-sided original - one-sided copy (
The exposed document 34 is sent to the ejection roller 43, but due to the reversal of the ejection roller 43, it passes through the return conveyance path 47 and reaches the uppermost document on the paper feed tray 33. returned in its original condition.

Therefore, regarding the original 34 returned to the paper feed tray 33,
By repeating the above-described operations for the required number of copies, the required number of copies can be obtained on the paper discharge tray 21. In other words, for processing in the single-sided original-single-sided copy (multiple copies) mode, it is possible to use the ADF@feed path 61 and use a sorter instead of the paper output tray 21 to eject the sorted sheets. Processing using the RADF conveyance path 63 eliminates the need for a sorter.

Here, in the copying operation, a job sheet on which work content data such as the required number of copies is written is set at the lowest (or highest) of the originals 34 on the paper feed tray 33. The presence of such a job sheet allows the user to know the number of times the document 34 has been recycled, making it easy to carry out recycling operations. In this regard, the conventional method uses a mechanical partition plate, but it is much more complicated than the job sheet method.

Note that when a document is generated, interrupt copy processing is performed using the 5ADF function (E processing mode) in the same way as in the A1 processing mode, but the original 34 is transferred onto the paper feed tray 33 by the second RADF transport path 63. will be returned to.

B1... Single-sided original - double-sided copy (partial) mode 2nd RA
Processing is performed by using the DF transport path 63 (see FIG. 2(c)).

First, the originals 34 are placed on the paper feed tray 33 in page order, and the originals 34 are sequentially fed and conveyed onto the contact glass 3 to perform the copying operation. The exposure operation is performed only on the original, the even-numbered original is fed blankly and only the front side copy is made, and the original 34 is returned to the paper feed tray 33 in its original state by the second RADF II feeding path 63.

At this time, the transfer sheet 8a on which the front surface has been copied is reversed by the reversing action of the reversing device 12, and is discharged onto the intermediate tray 19 with the copy surface facing upward. Such odd-numbered page front side copying (even-numbered page blank feeding) operation is performed for the original 34 set on the paper feed tray 33 as a first round process.

When the first round processing is completed, the documents 34 are returned to the paper feed tray 33 in their original state, so the second round processing is performed on these documents 34 again using the second RADF transport path 63. . In this second round processing, contrary to the first round processing, a copying operation such as exposure is performed for the odd-numbered pages of the original (I), and a copying operation is performed only for the even-numbered original page. At this time, the transfer paper 8a on which the front side has been copied is fed from the intermediate tray 19, and even-numbered page-back side copies are made. In other words, by combining the first round of odd-numbered pages - front side copy (even-numbered pages skip-feeding) and the second-round process of even-numbered pages - back-side copy (odd-numbered pages skipped),
This completes double-sided copying. The transfer paper 8 on which the double-sided copy has been made is directed toward the paper ejection side without being reversed by the reversing device i12, and is ejected onto the paper ejection tray 21 with the front copy side facing down, so that the pages are in order. .

Incidentally, the processing of single-sided original to double-sided copy is performed by repeating the front side copy of odd numbered pages and the back side copy of even numbered pages by using the ADF conveyance path 61 or the second RADF conveyance path 63.
This can also be done by just copying the data. but,
In this method, when copying even-numbered pages to the back side,
It is necessary to wait until the transfer paper 8a on which the front side has been copied is reversed by the reversing device 12 and re-fed via the intermediate tray 19, resulting in a large time loss. In this regard, according to the method of the present embodiment described above, although the first and second rounds of processing are required, idle feeding can be performed at high speed, and the transfer paper 8
Since there is no loss in paper refeed timing on the side, the front side copy operation and the back side copy operation can be performed successively, and double-sided copies can be made in a short time.

By the way, if a jam occurs during the single-sided original - double-sided copy (partial) mode processing, first of all, if the jam occurs during the first round of processing, the front side copy (single-sided copy) creation operation is performed, and the B2 single-sided original - Processed in the same way as in single-sided copy (multiple copies) mode.

On the other hand, if the jam occurs during the second round of making back-side copies, 2 to 3 copies will be useless whether it is a transfer paper jam or a document jam, so the original will be 4 to 3 copies. I have to refeed 6 sheets and then clean them in the evening. this is,
This is because a processing operation is being performed for a specific transfer sheet 8a that has been fed from the intermediate tray 19 and whose front side has been copied, and if a jam occurs, it is necessary to start over from the front side copy side. After removing jammed paper, you can see the number of jammed copies.
The originals 34 on the top 3 are sequentially fed through the second RADF transport path 63, and the jam-related originals are called onto the storage glass 3, and the jam recovery operation is performed on 4 to 6 originals. First, the odd-numbered pages of the original are subjected to exposure processing, and the cassette 7
Make a front copy on the newly fed transfer paper 8,
After the transfer paper 8 on which the front side has been copied is reversed by the reversing device 12, it is sent to the registration rollers 9 through the bypass conveyance path 17 by the switching claw 18. Then, the even-numbered original pages that are called up next are subjected to exposure processing, and the back side copy is performed on the transfer paper that is re-fed by the registration roller 9 to complete a double-sided copy and the paper is discharged to the four paper discharge trays 21. In other words, 2
The copy process was in progress, and the copy operation was being performed every other document, with even-numbered pages - reverse side copy and odd-numbered pages skipped forwarding.

The recovery process when a jam occurs is to complete double-sided copying through a continuous operation of odd-numbered pages - front side copying → even-numbered pages - backside copying.
This is done for the educational level. Then, when the recovery process is completed, the second round process of making a back side copy on the subsequent transfer sheet in the intermediate tray 19 is restarted. Therefore, in the jam recovery process, the double-sided copying process is immediately performed and the paper is ejected onto the paper ejection tray 21 regardless of the subsequent transfer paper whose front side has been copied remaining in the intermediate tray 19, so that the page order may be out of order. It is possible to perform jam recovery without any problems.

In the above explanation, the bypass conveyance path 17 is used for jam recovery, but the transfer paper whose front surface has been copied is once discharged to the uppermost position on the intermediate tray 19, and the auxiliary paper feed roller 23 is operated to move this transfer paper. It is also possible to immediately send the image to the registration rollers 9 and use it for back side copying. Therefore, the bypass conveyance path 17 and the auxiliary paper feed roller 23
It is sufficient to selectively provide only one of them.

Incidentally, the single-sided original/double-sided copy (partial) mode processing can also be performed using the ADF transport path 61. In the copying operation, the first round processing and the second round processing are performed in the same way as in the case described above, but the document 34 discharged to the paper output tray 32 after the first reverse processing is completed is manually transferred to the paper feed tray 33. The second round of processing is performed by resetting the data.

B2... Single-sided original - double-sided copy (multiple copies) mode Processed using the second RADF transport path 63 (see FIG. 2(c)).

The processing operation is performed by repeating the first reverse processing and second round processing of the single-sided original/double-sided copy (partial) mode described in B1 for the required number of copies.

Recovery when a jam occurs is performed in the same way.

C1...Double-sided original - Single-sided copy (partial) mode No.-R
It is processed by using the ADF 1133 [62 (see FIG. 2(b)) or the third RADF conveyance path 64 (see FIG. 2(d)).

C11...Processing using the -th RADF transport path 62 First, a plurality of double-sided originals are set on the paper feed tray 33 in page order with the front page facing down. Then, these manuscripts are
ADFIf! The sheets are sequentially sent onto the contact glass 3 through the feed path 62 for copy processing, and then returned to the paper feed tray 33. At this time, since the back page of the double-sided document does not appear on the contact glass 3, only the front page is copied. Therefore, on the copying machine 1 side, after the transfer paper on which the front page has been copied is discharged to the intermediate tray 19, the transfer paper that does not involve a copying operation is fed from the cassette 7 as a blank transfer paper.

The paper is discharged to the intermediate tray 19. In other words, the intermediate tray 19
Transfer paper with the front page copied and blank transfer paper are alternately discharged one by one onto the top. In this way, only the front page copying of the double-sided original is performed as the first round process.

When the first reversing process is completed, all the documents are returned to the paper feed tray 33 in an inverted state, that is, with the back page facing down. Therefore, these documents are sequentially fed onto the contact glass 3, and the back page of the double-sided document is copied as a second round process. At this time.

The transfer paper is fed from the intermediate tray 19, and the transfer paper on which the front page has been copied is fed without any copying operation and is ejected to the paper ejection tray 21, and then the blank paper that is fed next. The back page of the double-sided document is copied onto the transfer paper, and the paper is discharged onto the paper discharge tray 21. Note that the transfer paper is reversed by the reversing device 12 and discharged with the copy side facing down, so that the paper is discharged in page order.

In addition, in the first round of processing, only the copied transfer paper of the front page of the double-sided document is discharged to the intermediate tray 19, and in the second round of processing, after the blank feed of the transfer paper from the intermediate tray 19 is discharged, a blank sheet is discharged from the cassette 7. The back page of the double-sided document may be copied by feeding transfer paper.

In any case, in the process of double-sided original to single-sided copying, the front page of the double-sided original is copied and ejected to the paper output tray 21 in the first round of processing, and the back page of the double-sided original is copied in the second round of processing. This can also be done by discharging the sheets to the paper discharge tray 21, but in this case the sheets are divided into a front page copy group and a back page copy group, and the pages must be arranged in page order later. In this respect, according to the method of this embodiment, it is possible to perform a double-sided document-to-single-sided copy process without requiring page order alignment later.

C12...Processing using the third RADF transport path 64 First, a plurality of double-sided originals are set on the paper feed tray 33 in page order with the front page facing down. Then, the lowest original is fed onto the contact glass 3, and the front page of the double-sided original is copied. The copied transfer paper 8 is reversed by a reversing device 12 and discharged onto a paper discharge tray 21 with the copy side facing down. On the other hand, the double-sided original on the contact glass 3 is sent to the ejection roller 43, reversed by the reverse rotation, sent to the return conveyance path 47, and then turned in the conveyance path 50 so that the back side is facing down and placed on the contact glass 3. Reset to . Therefore, the back page of the double-sided document is copied, and the copied transfer paper 8 is reversed by a reversing device 12 and discharged onto a paper discharge tray 21.

The original 34 passes through the return conveyance path 47 and is returned onto the paper feed tray 33 in the same state as before. This operation, that is, front page copy → back page copy operation, is performed for each double-sided original.

By the way, when a transfer paper jam occurs, take out the jammed original and set it again at the lowest position on the paper feed tray 33.
Resume operation. In addition, if the front page copy is valid,
Copying of the back side of a double-sided document may be performed using the 5ADF function (E processing mode). Also, when a document jam occurs, if the front page copy is not completed, the document is reset to the lowest position on the paper feed tray 33 and the operation is restarted, but if the front page copy is completed, the double-sided document is 5 copies of the back side
Processed by ADF function.

C2...Double-sided original - Single-sided copy (multiple copies) mode -
RADF transport path 62 (see Figure 2(b)) or third RA
C21 processed by using the DF transport path 64 (see FIG. 2(d))...process C1 by using the RADF transport path 62
This is performed by repeating the first round processing and second round processing shown in the 1 processing mode for the required number of copies.

C22...Processing using the third RADF II transmission path 64 This is performed by repeating the operation shown in the C12 processing mode for the required number of copies.

Dl...Double-sided original - double-sided copy (partial) mode No.-R
ADF conveyance path 62 (see Fig. 2(b)) or third RAD
It is processed by using the F conveyance path 64 (see FIG. 2(d)).

Dll...-Processing using the RADF transport path 62 First, a plurality of double-sided originals are set on the paper feed tray 33 in page order with the front page facing down. Then, these manuscripts are
The ADF transport path 62 sequentially transports the sheets onto the contact glass 3 for front page copy processing. The original is returned onto the paper feed tray 33 in an inverted state, and the transfer paper on which the front page has been copied is discharged to the intermediate tray 19 with the copy side facing up. In this way, the first round processing is performed.

When the first round of processing is completed, all the documents have been returned onto the paper feed tray 33 with the back pages facing down. Therefore, these documents are sequentially fed onto the contact glass 3, and the back page of the double-sided document is copied as a second round process. At this time, the transfer paper is re-fed from the intermediate tray 19 and copying is performed on the back side, thus completing a double-sided copy. The transfer paper on which the double-sided copy has been made is discharged onto the paper discharge tray 21 without being reversed, and the pages are arranged in page order.

Note that when a jam occurs, the same procedure as shown in the B1 processing mode can be performed, but for jam-related documents, 2 to 3
One piece is enough.

B12...Processing using the third RADF transport path 64 First, a plurality of double-sided originals are set on the paper feed tray 33 in page order with the front page facing down. Then, the lowest document is fed onto the contact glass 3, and the front page of the double-sided document is copied as a front page.

The copied transfer paper is reversed using the reversing bag @ 12 and sent to the intermediate tray 19 with the copy side facing up, and then the registration roller 9
The paper is re-fed to the side (the bypass conveyance path 17 may be used). On the other hand, the double-sided document on the contact glass 3 is sent to the ejection roller 43/\, reversed by its reverse rotation, sent to the return conveyance path 47, and further turned in the conveyance path 50 so that the back page side is facing down and contacted. Reset on glass 3.

Therefore, a copy of the back page of the double-sided original is made as a back copy onto a transfer sheet whose front side has been copied, which is re-fed by the registration roller 9, thereby completing a double-sided copy.

The transfer sheet on which the double-sided copy has been made is ejected to the ejection tray 21 as it is without being reversed. This kind of behavior,
In other words, the operation of front page - front side copy -> back page -> back side copy is performed for each double-sided document.

Note that when a jam occurs, the document is set at the lowest position on the paper feed tray 33, and copying is restarted from the front page of the document.

D2...Double-sided original - double-sided copy (multiple copies) mode No.
RADF transport path 62 (see Figure 2(b)) or third RA
Processing is performed by using the DF transport path 64 (see FIG. 2 (L3)).

D21... Processing D using the -th RADF conveyance path 62
The first round processing and the second round processing shown in No. 11 processing mode are performed by repeating the necessary number of copies.

D22...Processing using the third RADF conveyance path 64-
This is performed by repeating the operation shown in the Dx2 processing mode for the required number of copies.

E...5 ADF processing mode As mentioned above, this is performed as jam recovery during processing in each mode, and after copy processing, the paper is transported along the respective transport path and used for recycling copying work, etc. . Note that during interruption copying not related to jam recovery, the paper is ejected to the paper ejection tray 32 along the ADF conveyance path 61. In addition, even if other mode processing is being performed, this processing mode interrupts that processing and is performed preferentially.

F: Copy processing mode for books or thick originals, that is, copy processing for originals for which the automatic document feeder 2 cannot be used, but the automatic document feeder 2 has a pivot point on the back side, Since the contact glass 3 can be opened, the automatic document feeder 2 is opened, the document is directly set on the contact glass 3, and copies are made. At this time, the conveyor belt 41 may be used as a pressure plate and laid down on the document.

Effects Since the present invention is configured as described above, it is possible to perform a double-sided document-to-single-sided copying process automatically and with the pages aligned in the order of the pages, thereby eliminating the need for post-processing for page alignment.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view, and FIGS. 2(a) to 2(d) are explanations schematically showing various conveyance paths. 2. Automatic document feeder, 3. Contact glass (exposure section), 5. Photoreceptor, 8 Transferable paper, 19. Intermediate tray, 30. Paper feed section, 34. Original, 62. ... No.-RADF conveyance route (recycling conveyance route) Applicant Rico Co., Ltd. -

Claims (1)

[Claims] A document automatic machine having a recycling conveyance path that feeds a plurality of documents set in a paper feed section one by one from the bottom to an exposure section, and returns them in an inverted state to the top of the document in the paper feed section after exposure processing. A feeding device and an intermediate tray that can temporarily store copied transfer paper and refeed it to the photoconductor are provided, and double-sided originals set in the paper feeding unit are sequentially fed to the exposure unit to produce double-sided originals. A first round process of copying the front page, storing the copied transfer paper in the intermediate tray, and returning the double-sided original after exposure processing from the exposure unit to the paper feed unit via the recycling conveyance path, and the paper feed unit The double-sided original returned in an inverted state is sequentially fed to the exposure unit, and a blank transfer paper is fed every other copy of the copied transfer paper fed and discharged from the intermediate tray, and the double-sided original is printed on the blank transfer paper. A copying apparatus characterized in that a double-sided original to single-sided copying process is performed by performing a second round process of copying and ejecting the back page of the original.