JPH0594059A - Image forming device - Google Patents

Abstract

PURPOSE:To prevent damage to a document by reducing recycling of the docu ment when multiple copying of a format document is carried out on a great number of documents with the great number of documents and one piece of the format document in the image forming device provided with a document carrying device, a sorter, and an intermediate tray. CONSTITUTION:The format document S is set on the uppermost part of the great number of documents S, and temporary storing of copied sheets P in the intermediate tray 203 after a specified number of the copied sheets P are formed for each of the great number of documents S is repeated. Then, when the format document M on the uppermost part is set on a platen 101, the copied sheets P temporarily stored in the intermediate tray 203 is fed again and the doubly copied sheets P are produced against all copied sheets P. Then, operation is carried out by instruction of a control part 2 to eject them to the sorter 1 according to mode of a mode setting means 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus having a document feeding device, a sheet separating device, and an intermediate tray for temporarily storing a copied sheet for re-copying. The present invention relates to a control unit that controls so as to reduce the number of times a document is conveyed during copying.

[0002]

2. Description of the Related Art Conventionally, in image formation provided with a circulation type document feeder, for example, when performing double-sided or double copying, an odd-numbered original document and an even-numbered original document stacked thereafter. The original document is to be duplicated on both sides or double on one copy sheet.

[0003]

However, in the above-mentioned conventional example, only the first original and the second original set on the first original are double-sided or double copied on a single sheet. However, it has the following drawbacks.

It is impossible to produce a plurality of double-sided or double-duplicated sheets consisting of a plurality of originals and another one original (formatted original) by a conventional batch processing.

If forced, the original is damaged in order to be recycled a plurality of times.

It takes time to perform sort or group processing by the sheet classifying apparatus.

[0007]

The present invention has been made in view of the above circumstances. For example, referring to FIG. 1, a detection means (306) for detecting the final document (S).
An original conveying device (300) having a sheet, an intermediate tray (203) for temporarily storing the sheet (P) after the primary copying of the sheet (P) and re-feeding the sheet (P), In the image forming apparatus equipped with
The originals (S) are fed one by one from 0), and the originals (S) are fed.
When a predetermined number of copy sheets (P) are created by the above and stored in the intermediate tray (203) repeatedly, and when a signal that the final document (S) has been fed is received from the detection means (306). A control means (2) is provided for controlling so that the copy sheet (P) stored in the intermediate tray (203) is re-fed and re-copied with the final document (S). And

Further, the image forming apparatus is provided with a sheet sorting device (400) including a plurality of bins (411) for sorting the re-copyed sheets (P) and a sorting mode setting means (3) thereof. When the group mode and the number of copies are set in the classification mode setting means (3), the same number of copy sheets (P) as the number of copies of the same original (S).
And re-copying the same copy sheet (P), and discharging the same re-copy sheet (P) to the same bin (411) in the number of copies. And

Further, the image forming apparatus is provided with a sheet sorting device (400) including a plurality of bins (411) for sorting the re-copyed sheets (P) and a sorting mode setting means (3) thereof. When the sort mode and the number of copies are set in the classification mode setting means (3), the same copy sheet (P) is produced for the same original (S) and the same copy sheet (P) is produced. ), And the same re-copy sheet (P) is discharged to the bins (411) each having a different number of copies.

[0010]

According to the above construction, (m) originals (S) are set on the original conveying device (300), and another original (S) (formatted original) is set on the top, and the image forming apparatus main body ( 100) is operated, the first original document (S) is fed by the command of the control means (2), and when set on the platen (101), the sheet (P) is fed. , A predetermined number (m) of copy sheets (P) are prepared for the first original (S) and temporarily stored in the intermediate tray (203), and the first original (S) ) Is restored. This copying operation is performed for the mth original (S)
Repeat until. Next, when another original (S) (formatted original) is fed and set on the platen (101), m × n copied sheets (P) are re-fed from the intermediate tray (203). , And is duplicated on both sides or multiplex by another original document (S), and is ejected.

When the group mode and the number of copies n are set by the classification mode setting means (3) and the image forming apparatus is operated, both sides of the first original (S) and the other original (S) are printed. Alternatively, the multiple copied sheets (P) are discharged to the first bin (411) of the sheet sorting apparatus (400). Then, the sheet (P) duplicated or double-sided by the second original (S) and the other original (S) is discharged to the second bin (411). This kind of operation
Repeat times (number of originals).

When the sort mode and the number of copies n are set by the classification mode setting means (3) and the image forming apparatus is operated, the first original (S) and the other original (S) are used. The sheets (P) copied on both sides or in multiples are discharged one by one to one bin (411) repeatedly m times, and then the second original (S) and other originals (S) Sheets that are duplicated on both sides or in multiple layers (P)
It is repeated n times (the number of copies) to discharge each of the above into each bin.

The reference numerals in the parentheses refer to the drawings and do not limit the structure of the invention.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the internal construction of a copying apparatus according to an embodiment of the present invention. In the figure, 100 is a copying machine main body, and 20
0 is a pedestal having a double-sided processing function of turning over a recording sheet (sheet) at the time of double-sided recording and a multiplex recording function of performing recording a plurality of times on the same sheet, and 300 is a circulation for automatically feeding an original. A type document feeder (hereinafter, referred to as RDF) 400 is a sheet sorting apparatus having a plurality of bins (shelf), and sorts and groups the sheets discharged from the main body 100 into arbitrary bins. A device (hereinafter referred to as a sorter). Each of these devices 200, 300, and 400 can be freely combined with the main body 100.

In the main body 100, 101 is a platen glass on which the original S is placed, 103 is an illumination lamp (exposure lamp) for illuminating the original S, 105, 107 and 109 are scanning mirrors for changing the optical path of the original S, 111 Is a lens having focusing and variable magnification functions, and 113 is a reflecting mirror that deflects the optical path. Denoted at 115 is an optical system motor for driving the optical system, and denoted at 117, 119 and 121 are sensors.

Reference numeral 131 is a photosensitive drum, 133 is a main motor for driving the photosensitive drum 131, 135 is a high voltage unit, 137 is a blank exposure unit, 139 is a developing device,
140 is a developing roller, 141 is a transfer charger, 143 is a separation charger, and 145 is a cleaning device.

Reference numeral 171 designates a manual sheet feeding port, 155 and 157.
Is a paper feed roller, and 159 is a registration roller. Also,
Reference numeral 161 is a conveyor belt that conveys a sheet on which an image is stored to the fixing side, 163 is a fixing device that fixes the conveyed recording paper by thermocompression bonding, and 167 is a sensor used in double-sided multiplex recording.

The surface of the above-mentioned photosensitive drum 131 is composed of a photoconductor and a seamless photosensitive member using a conductor, and the drum 131 is rotatably supported and operates in response to depression of a copy start key. Rotation is started by the motor 133. Then, when the predetermined rotation control of the drum 131 and the potential control process (pretreatment) are completed, the platen glass 10
The document S placed on the first sheet is scanned by the scanning mirrors 105, 107,
An image is formed on the drum 131 via the lens 109, the lens 111, and the reflection mirror 113.

The drum 131 is corona charged by the high voltage unit 135. After that, the image (original image) irradiated by the illumination lamp 103 is slit-exposed, and an electrostatic image is formed on the drum 131 by the known Carlson method.

Next, the electrostatic image on the photosensitive drum 131 is
It is developed by the developing roller 140 of the developing device 139 and visualized as a toner image, and the toner image is transferred to the transfer charger 1.
By 41, it is transferred onto a transfer paper as described later.

That is, the sheet P in the upper cassette 151 or the lower cassette 153, or the manual paper feed port 1
The sheet P inserted in the sheet 71 is sent into the main body 100 by the sheet feeding roller 155 or 157, and is accurately timed by the registration roller 159.
The image is fed in the direction of 31, and the leading edge of the image and the leading edge of the transfer sheet P are aligned. After that, the transfer charger 141 and the drum 13
When the sheet P passes between the drum 13 and the drum 13,
The toner image on No. 1 is transferred onto the sheet P. After the transfer is completed, the sheet P is separated from the drum 131 by the separation charger 143, guided to the fixing device 163 by the transport belt 161, and fixed by pressure and overheating, and then discharged to the outside of the main body 100 by the discharge roller 165. To be done.

After the transfer, the drum 131 continues to rotate, and its surface is cleaned by a cleaning device 145 composed of a cleaning roller and an elastic blade.

The pedestal 200 has a deck 201 which can be separated from the main body 100 and can store about 2000 sheets P, and an intermediate tray 203 for double-sided copying. Further, the lifter 205 on the deck 201 capable of accommodating about 2000 sheets ascends according to the amount of the sheet P so that the sheet P always contacts the sheet feeding roller 207.

Reference numeral 211 is a flapper for switching between the double-side recording side or multiple recording side path and the discharge side path.
Reference numerals 13 and 215 denote the conveyance path of the conveyance belt, and 217 denotes the sheet P.
An intermediate tray weight that holds the
The sheet P that has passed through 1 and the transport paths 213 and 215 is turned over and stored in the double-sided copying intermediate tray 203.
A flapper 219 switches between double-sided recording and multiplex recording. The flapper 219 is arranged between the conveying paths 213 and 215 and rotates upward to move the sheet P to the multiplex recording conveying path 22.
Lead to 1. A multiple paper ejection sensor 223 detects the end of the sheet P passing through the flapper 219. 225 is the transport path 2
A sheet feeding roller that feeds the sheet P to the drum 131 side through 27. Reference numeral 229 is a paper discharge roller for discharging the sheet P to the outside of the machine.

In double-sided recording (double-sided copying) or multiplex recording (multiplexing copying), first, the flapper 211 is raised to move the copied sheet P to the conveying path 21 of the pedestal 200.
It is stored in the intermediate tray 203 via 3, 215. At this time, the flapper 219 is lowered during double-sided recording, and the flapper 219 is raised during multiplex recording. The intermediate tray 203 can store, for example, up to 99 copy sheets. The sheet P stored in the intermediate tray 203 is held by the intermediate tray weight 217.

At the time of the next reverse recording or multiple recording, the sheets P stored in the intermediate tray 203 are passed through the path 227 by the action of the sheet feeding roller 225 and the weight 217 one by one from the bottom. It is guided to the registration roller 159 of the main body 100.

FIG. 2 shows a detailed internal structure of the RDF 300 shown in FIG. In the RDF 300, reference numeral 305 is a stacking tray for setting a bundle of originals S. First, when a single-sided original, the separation motor M301 is driven to cause the half-moon roller 3 to move.
07, the separation roller 309, and the separation belt 310 form the sheet-like originals S one by one from the bottom of the bundle of originals S.
And the belt motor M302 is driven to convey the original S to the exposure position on the platen glass 101 by the registration rollers 321 (321a and 321b) and the full-face feed belt 303 via the paths A and B, Stop and start copying operation. After completion of copying, by driving the conveyance motor M302, the document S on the platen glass 101 is sent to the paths D and E via the path C by the large conveyance roller 315, and further, the paper discharge roller 3 is supplied.
By 17, the originals S are returned to the upper surface of the stack. 306
Is a recycle lever for detecting one circulation of the document S.
When the document feeding is started, the document S is placed on the upper part of the stack of the documents S, the documents S are sequentially fed, and the rear end of the final document S is at the recycling lever 30.
When exiting 6, the recycle sensor (not shown) detects the circulation of the document S by dropping it by its own weight.

Next, at the time of a double-sided original, the original S is guided from the paths A, B to C as described above, and after the one-sided copying is completed, the flapper solenoid (not shown) is driven to move the rotatable flapper 320 of FIG. Switching to the direction of the broken line, whereby the leading edge of the document S is guided from the path D to the path F, and the registration rollers 321 (321a, 321b) pass through the path B between the full-face feed belt 303 and the platen glass 101 (path C). After transporting the original to, stop it. That is, the rotation of the large conveyance roller 315 causes the paths C, D, and
The document S is inverted along the F and B paths.

In addition, a bundle of originals S is passed one by one on paths A, B,
It is also possible to count the number of documents S by conveying the sheets through C, D, and E until the recycle lever 306 detects one round.

The sorter 400 has 25 bins 411 and sorts the recorded sheets P. The copied sheet P is sequentially ejected from the ejection roller 229 of the main body 100, and is conveyed from the transport roller 405 of the sorter 400 to each bin 411.
Is discharged to.

Then, for example, in the sort mode, the sheet P
Each time the paper is discharged to each bin 411, the bin shift motor 42
The bin 411 is raised by 0 and collation is performed by the sorter controller.

Further, as shown in FIG.
0, pedestal 200, RDF300, sorter 400
There is provided a control unit 2 for controlling the overall operation of the control unit 1, and the mode setting unit 1 is connected to the control unit 1.

Next, referring to the flowchart of FIG.
Control for performing group processing after multiple processing in a copying machine including the RDF 300 and the sorter 400 will be described.

First, the first document S is fed from the RDF 300 (S101), copying is performed and the copy sheet P is discharged to the intermediate tray 203 (S102). This operation is repeated for the second and subsequent sheets. At this time, the ejected copy sheet P is referred to as a first copy sheet. Next, it is judged "is the intermediate tray 203 full?" (S103).
Are exchanged (S104). Then, the control section 2 determines the replaced "original S is the last (formatted original) original S?" By a signal from the recycle lever 306 (S10).
5) ,. If it is the last document S, the first copy sheet temporarily stored in the intermediate tray 203 is re-fed (S10).
6). In the re-feeding, the first copy sheet P is fed from the intermediate tray 203, the first copy sheet P and the last document S are subjected to multiple copying, and the sheets are discharged to the sorter 400 (S1).
11). At this time, the copy sheet discharged is referred to as a second copy sheet P. When the copy sheet of the first original of the first copy sheets on the intermediate tray 203 is completely discharged,
Repeatedly shifting to the next bin, the intermediate tray 203
It is determined whether the sheet is the last sheet (S112), and if it is not the last sheet, the bin 411 of the sorter 400 is shifted to continue (S11).
3), the process returns to S111, but if it is the last sheet, the process ends. Next, I want to create "Is the number of copies finished?" (S
107), and if it is finished, the document is discharged (S1
08) End all processing. If the processing has not been completed for the number of copies to be created, the sorter bin is returned to the initial position (S109), and the processing is repeated from S104.

If it is determined in S103 that the intermediate tray is full, the following processing is performed. The control unit 2 determines which sheet (for example, the third sheet) the last processed original is.
Stored in the memory (S121) and replace the original (S121).
122). Next, if the replaced original is "the last original" (S
123), and if it is not the last document, the process returns to S122 and is repeated. By repeating this operation, when the replaced original becomes the last original (formatted original), refeeding of the first copy sheet on the intermediate tray 203 is started (S12).
4). When the processing is completed, the original (formatted original) is exchanged (S125), and it is determined whether or not it is the position of the number of originals recorded in the memory (S126). The process of S125 is repeated until the number of originals is reached, and when the number of originals is reached, the process branches to S104, and the same processes (S102-) are repeated for the remaining originals (for example, from the fourth sheet).

An example of using three originals and another original (formatted original) for the discharge state of the second copy sheet when the above processing is performed will be described with reference to FIGS. 4 and 5. ..

Three originals are set on the feeder of the RDF 300, and originals (format originals) to be superposed on the originals are set (S201, ... Are originals, is format originals).

Next, the copy paper ejected first after the processing operation is started by the start key of the copying machine main body 100 is
The first and fourth originals (format originals) are copy papers that have undergone multiple processing, and are all ejected to the first bin of the sorter (S202 to S204). The copy paper to be ejected next is a copy paper obtained by subjecting the second and fourth originals to multiple processing, and ejected to the second bin of the sorter (S205 to S2).
07). Similarly, the copy sheets of the third original and the fourth original are discharged to the third bin (S208 to S210). [Other Embodiments] Next, control for performing sort processing after multiple processing in a copying machine equipped with the RDF 300 and the sorter 400 will be described with reference to the flowchart shown in FIG.

First, the first original is fed from the RDF 300 (S301), copying is performed and the copy paper is ejected to the intermediate tray (S302). Next, it is determined whether the intermediate tray is full (S303), and if not, the original is replaced (S304). Then, it is determined whether the replaced original is the last (formatted original) (S305), and if it is the last original, the first copy sheet P from the intermediate tray 203.
Is re-fed (S306). Then, the first copy sheet P and the final document S are subjected to multiple processing, and the sorter 40
The sheet is discharged to 0 (S311). It is determined whether the processed first copy sheet P is the final sheet in the intermediate tray (S312), and if it is not the final sheet, the process returns to S311, but if it is the final sheet, the re-feeding process ends. Next, it is judged whether "the processing has been completed for the number of copies" to be created (S307), and if it has been completed, the document is ejected (S308) and all the processing is completed. If the processing has not been completed for the number of copies to be created, the sorter bin is shifted by one step (S309), and the processing is repeated from S304.

If it is determined in S303 that the intermediate tray is full, the following processing is performed. The number of the original document S processed last is stored in the memory of the control unit 2 (S
321), and replace the document S (S322). Next, it is determined whether the replaced document S is the last document (S323), and if it is not the last document S, the process returns to S322 and is repeated. If the replaced document S is the last document S, the re-feeding process is started (S324). When the re-feeding process is completed, the original (format original) is exchanged (S325), and it is determined whether "the original number position" (S326) recorded in the memory. The process of S325 is repeated until the number of originals is reached, and when the number of originals is reached, the process branches to S304, and the following processes are repeated.

The discharge state of the second copy sheet when the above processing is performed will be described with reference to FIGS. 7 and 8 by using an example of three originals and one formatted original.

Three originals are set on the feeder of the RDF 300, and the original S (format original) to be superposed thereon is set (S401). Here, is a manuscript, and is a format manuscript.

Next, the processing operation is started by the start key of the copying machine main body 100, and the second copy sheet discharged as the first sheet is subjected to the multiple processing of the first and fourth sheets (formatted originals). The copied copy sheet P is ejected to the first bin of the sorter 400 (S402). Two
The second copy sheet discharged on the second sheet is a copy sheet obtained by multiple processing of the first and fourth originals,
The paper is continuously ejected from the bin (S403). Similarly, the third sheet is discharged to the third bin (S404). The state of S404 is reached at the time when the original has completed one cycle.

Next, in steps S405 to S407, the second copy sheets of the first and second originals are discharged into the first to third bins, respectively, into the respective bins, and in steps S408 to S410, the first to second bins 1 to 1 are respectively discharged. The second copy sheet of the third original is ejected. Then the work ends.

[0046]

As described above, according to the present invention,
A large number of originals are set on the original conveying device, the final original (formatted original) is set on the uppermost one, a predetermined number of copy sheets are created from each of the large originals, and the sheets are temporarily stored in an intermediate tray. Then, when the final document at the top is set on the platen, the copy sheet on the intermediate tray is re-fed, a recopy sheet is produced with the final document, and the recopy sheet is ejected. Multiple double copy sheets can be made from only one final document. Further, at this time, since the original document is only one cycle, it is possible to prevent the original document from being damaged.

Further, since the manuscript recycling time is the shortest, the total work time can be greatly shortened even when the copy sheets are sorted by the sheet sorting apparatus.

[Brief description of drawings]

FIG. 1 is a sectional side view of an image forming apparatus showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional side view of the document feeder.

FIG. 3 is a flowchart of the group processing.

FIG. 4 is a process diagram of the operation for the three originals.

FIG. 5 is a process diagram of an operation for the three originals.

FIG. 6 is a flowchart of another embodiment.

FIG. 7 is a process diagram of work on three originals.

FIG. 8 is a process diagram of work on three originals.

[Explanation of symbols]

 2 control means (control section) 3 classification mode setting means 100 image forming apparatus main body 101 platen 203 intermediate tray 300 document feeder 306 detection means (recycle lever) 400 sheet sorter (sorter) 411 bin S document P sheet

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Akemi Yoshida 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (3)

[Claims] 1. An original conveying apparatus having a detecting means for detecting a final original, and an intermediate tray for temporarily storing the sheet after the primary copying of the fed sheet and re-feeding the sheet. In the image forming apparatus provided with, the document feeding device feeds the documents one by one, a predetermined number of copy sheets are created from the documents, and the sheets are stored in the intermediate tray repeatedly. An image provided with a control means for controlling to re-feed the copy sheet stored in the intermediate tray and re-copy with the final original document when receiving the signal that the final original document has been fed. Forming equipment. 2. The image forming apparatus is provided with a sheet sorting apparatus including a plurality of bins for sorting the re-copied sheets and a sorting mode setting means, and the sorting mode setting means is provided with a group mode and a number of copies. When set, copy sheets of the same number of copies are produced for the same original document, and the re-copy is performed on the same copy sheet, and the same re-copy sheet is copied to the same bin. The image forming apparatus according to claim 1, wherein the image forming apparatus is configured to discharge. 3. The image forming apparatus is provided with a sheet sorting apparatus including a plurality of bins for sorting the re-copied sheets and a sorting mode setting means, and the sorting mode setting means is provided with a sort mode and a number of copies. When set, copy sheets of the same number of copies are produced, and the same copy sheet is copied, and the same re-copy sheet is discharged to bins of different copy numbers. The image forming apparatus according to claim 1, wherein the operation is repeated.