JP2005200213A - Image forming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming device having excellent usability by eliminating wasteful operations when paper is extracted from a finisher before the paper is treated by the finisher. <P>SOLUTION: In this image forming device 1, the paper P image-formed based on image data is carried, in order, to the finisher, the finisher 20 places, in order, the paper P carried in order at a staple position 23, and when the number of the paper reaches a treatable one, performs a staple treatment for the bundle of the paper P, and discharges the paper onto a discharge tray 22. Even if the paper P at he staple position 23 is absent before the staple treatment, the finisher does not recognize it as the occurrence of paper jamming. As a result, even if a user takes out the paper P form the staple position 23, a labor for recovery treatment can be saved. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an image forming apparatus, and more particularly, to an image forming apparatus with good usability that eliminates a wasteful operation when a sheet is pulled out from a finisher before finisher processing.

  Some image forming apparatuses such as a copying machine, a facsimile machine, and a printer are provided with a finisher that performs post-processing such as stapling on a sheet on which an image has been formed. As this finisher, the paper on which the image is formed by the image forming apparatus is post-processed, for example, accumulated in the internal intermediate tray unit until the number of sheets to be stapled is stacked, and finally the staple process is performed on the main tray. There are a large type finisher that discharges, and a small type finisher that leaves a part of a bundle of paper at the finisher processing position, conveys most of the paper bundle to the outside of the finisher, performs staple processing, and discharges it.

  The large type finisher discharges the stapled paper bundle to the main tray from the end opposite to the end where the stapling is performed. Since the leading end side in the discharge direction of the sheet bundle is scattered and discharge jam is likely to occur, a proposal has been made that the stapled finished paper bundle does not jam during discharge (see Patent Document 1).

  On the other hand, in a small type finisher, a part of the paper bundle is left, most of it is transported to a tray outside the finisher, stapled, and discharged, so there is little jamming on the transport path. Since the sheet before processing is discharged out of the finisher, it is often intentionally pulled out of the tray by a user who misunderstood that the sheet has been discharged or who is in a hurry.

  Then, when a sheet that has been discharged out of the finisher but has not yet been stapled is pulled out of the tray, the conventional image forming apparatus records and outputs an image on the assumption that it has ended abnormally before the end of the original operation. A processing procedure is adopted in which the operation is restarted from the operation, the stapling process is performed, and the operation is completed.

JP 2000-191224 A

  However, in the above-described conventional image forming apparatus, if paper that has been discharged out of the finisher but has not yet undergone stapling (finisher processing) is pulled out of the tray, it will be abnormally terminated before the end of the original operation. Since the operation is restarted from the initial operation of recording and outputting the image, in the case where the pulled paper bundle is not damaged and the user seems to have taken it away, it is a waste of resources and processing time. Was wasted and needed to be improved.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus with good usability without repeating unnecessary operations when a sheet is pulled out of a finisher before finishing processing.

  Specifically, according to the first aspect of the present invention, the image-formed paper is sequentially conveyed to a finisher that performs finisher processing such as stapling, and the finisher sequentially places the sequentially conveyed paper at the finisher processing position. When the finisher processing number is reached, the finisher processing is performed on the bundle of sheets, and the image forming apparatus that discharges the sheet onto the discharge tray is in the case where there is no image-formed sheet at the finisher processing position before the finisher processing. However, it is not recognized that a paper jam has occurred, and by continuing the image forming operation, even if a rushed user takes out the image-formed paper bundle from the finisher processing position, the user subsequently performs a recovery process when a jam occurs. An object of the present invention is to provide an image forming apparatus with good usability that saves time and effort.

  In the second aspect of the present invention, when the paper jam is not recognized, the re-image formation process on another paper of the same image as the image formation performed on the discharged paper is prohibited, thereby intentionally removing it by the user. An image forming apparatus with good usability is provided while reducing wasteful resource consumption and wasteful processing time by re-outputting the same image as the image-formed paper bundle, and reducing resource consumption. The purpose is that.

  In the third aspect of the invention, when the paper jam is not recognized, the finisher processing for the discharged paper is stopped, so that the staple needle by the finisher processing such as staple emptying in the absence of paper can be obtained. That is, an object of the present invention is to provide an image forming apparatus with good usability by suppressing the occurrence of such problems and preventing the occurrence of problems while reducing the consumption of resources.

  According to a fourth aspect of the present invention, whether or not it is recognized that a paper jam has occurred is processed according to the selection of the mode selection means when there is no image-formed paper at the finisher processing position before the finisher processing. Thus, in the case of rushing, the user can arbitrarily select whether to permit the removal of the image-formed paper before the finisher process, or to always finish the finisher process such as stapling and finish the process. An object of the present invention is to provide an image forming apparatus that can perform processing according to the form and has better usability.

  According to a first aspect of the present invention, there is provided an image forming apparatus comprising: a finisher that performs a finisher process such as a staple process on a bundle of sheets on which images have been formed; a conveying unit that sequentially conveys the image-formed sheets to the finisher; Placement means for sequentially placing the coming sheets at the finisher processing position, and when the placed sheets form a bundle of sheets for the finisher processing number, the finisher process is performed on the bundle of sheets and the sheet is placed on the discharge tray. A discharge unit for discharging and a detection unit for detecting the presence or absence of the sheet bundle at the finisher processing position are detected. When the execution of the finisher process is designated, the detection unit detects that there is no sheet bundle before the finisher process. In this case, the above object is achieved by not recognizing the occurrence of paper jam and continuing the image forming operation.

  In this case, for example, if the image forming apparatus does not recognize the paper jam as described in claim 2, the re-image of the same image as the image formation performed on the discharged paper on another paper is performed. The formation process may be prohibited.

  Further, for example, if the image forming apparatus does not recognize the paper jam, the finisher process scheduled to be performed on the loaded paper may be stopped. .

  Further, for example, as described in claim 4, the image forming apparatus includes a mode selection unit, and the paper jam occurs when the image-formed paper at the finisher processing position runs out before the finisher processing. Whether or not to recognize the occurrence of the above may be processed according to the selection of the mode selection means.

  According to the image forming apparatus of the first aspect of the present invention, the image-formed sheets are sequentially conveyed to a finisher that performs finisher processing such as stapling, and the finisher sequentially loads the sequentially conveyed sheets at the finisher processing position. When the finisher processing number is reached, the finisher processing is performed on the bundle of sheets, and the image forming apparatus that discharges the sheet onto the discharge tray runs out of finish-processed paper before the finisher processing. In this case, it is not recognized that a paper jam has occurred, and by continuing the image forming operation, even if the user in a hurry takes out the image-formed paper bundle from the finisher processing position, the user subsequently recovers from the jam. Can be saved and the usability can be improved.

  According to the image forming apparatus of the second aspect of the present invention, when the paper jam is not recognized, the re-image forming process on another paper of the same image as the image forming performed on the discharged paper is prohibited. It is possible to reduce wasteful resource consumption and wasteful processing time by re-outputting the same image as the image-formed paper bundle that has been intentionally removed by the user, thereby reducing resource consumption. Usability can be improved.

  According to the image forming apparatus of the third aspect of the invention, when the paper jam is not recognized, the finisher processing scheduled to be performed on the discharged paper is stopped, so that the staple blanking without the paper or the like is performed. The occurrence of stapling of the staples due to the finisher process can be suppressed to reduce the consumption of resources, the occurrence of defects can be prevented, and the usability can be improved.

  According to the image forming apparatus of the fourth aspect of the present invention, the selection of the mode selection means determines whether or not the occurrence of paper jam is recognized when there is no image-formed paper at the finisher processing position before the finisher processing. Therefore, the user can arbitrarily select whether to permit the removal of the image-formed paper before the finisher processing in the case of hurry or to finish the finisher processing such as stapling without fail. Thus, it is possible to perform processing according to the user's usage mode, and to further improve the usability.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, since the Example described below is a suitable Example of this invention, various technically preferable restrictions are attached | subjected, However, The scope of the present invention limits this invention especially in the following description. As long as there is no description of the effect, it is not restricted to these aspects.

  1 to 3 are diagrams showing an embodiment of the image forming apparatus of the present invention, and FIG. 1 is a block diagram of the image forming apparatus 1 to which the embodiment of the image forming apparatus of the present invention is applied. .

  1, an image forming apparatus 1 includes a scanner 2, a plotter 3, a CPU (Central Processing Unit) 4, a SAF (Store And Forward) memory 5, an encoding / decoding unit 6, an operation display control unit 7, and a communication control unit. (CCU) 8, NCU (Network Control Unit) 9, modem 10, ROM (Read Only Memory) 11, RAM (Random Access Memory) 12, network interface controller 13, paper bundle pull-out controller 14, etc. The main components are connected to the bus 15.

  The ROM 11 stores a basic processing program of the image forming apparatus 1, a sheet extraction control processing program to be described later, various data and system data necessary for executing these programs, and the RAM 12 is a work of the CPU 4. Used as memory.

  The CPU 4 controls each part of the image forming apparatus 1 while using the RAM 12 as a work memory based on a program in the ROM 11, and performs basic processing as the image forming apparatus 1 and paper extraction control processing.

  As the scanner 2, for example, an image scanner using a CCD (Charge Coupled Device) is used, operates under the control of the CPU 4, scans the document, and reads an image of the document with a predetermined resolution.

  The plotter 3 uses, for example, an electrophotographic recording device or the like, and records and outputs an image on a sheet based on image data received by the facsimile function of the image forming apparatus 1 or image data of a document read by the scanner 2. .

  The encoding / decoding unit 6 is for increasing the efficiency of storing image data in an image memory (not shown) and shortening the transmission time. The encoding / decoding unit 6 encodes image data according to a predetermined encoding method, The encoded image data is decoded.

  An operation display unit (not shown) is connected to the operation display control unit 7, and the operation display unit includes various operation keys such as a numeric keypad and a start key and a display (for example, a liquid crystal display). The operation display control unit 7 notifies the CPU 4 of the operation content input by the operation key of the operation display unit, and causes display data from the CPU 4 to be displayed and output on the display of the operation display unit. In particular, the operation display unit selects a mode for selecting whether or not to recognize the occurrence of a paper jam when there is no image-formed paper P (see FIG. 2) at the staple position 23 (see FIG. 2). A switch (mode selection means) is provided.

  An NCU 9 and a modem 10 are connected to the communication control unit 8, and a line L, for example, a public telephone line or a dedicated line is connected to the NCU 9. The NCU 9 automatically receives a call from the line L, and performs automatic call processing to the line. The modem 10 modulates the transmission signal and demodulates the reception signal, and the communication control unit 8 exchanges a facsimile control signal with the counterpart facsimile apparatus to execute a facsimile communication procedure.

  The network interface control unit 13 is connected to a predetermined network NW to which an information terminal such as a computer is connected, for example, a LAN (Local Area Network), and the network interface control unit 13 is connected to the network NW under the control of the CPU 4. Various information is exchanged with the information terminal connected via the.

  The paper bundle pull-out control unit 14 executes control processing when the unstaple paper bundle is pulled out from the finisher 20 (see FIG. 2) provided in the image forming apparatus 1 under the control of the CPU 4.

  In other words, as shown in FIG. 2, the image forming apparatus 1 has a finisher 20 disposed above the main body housing 1 a via a relay unit 21, and a discharge tray 22 on the side of the finisher 20. Is provided. The finisher 20 is fed with the paper P on which an image is recorded by the plotter 3 in the main body casing 1a of the image forming apparatus 1, and the finisher 20 includes a stapling mechanism that performs stapling processing as finisher processing on the paper P. Yes. The finisher 20 performs stapling by the stapling mechanism at the trailing edge of the paper P at the stapling position (finisher processing position) 23 of FIG. Accordingly, the finisher 20 positions the stapled portion of the paper P conveyed from the image forming apparatus 1 at the staple position 23 in the finisher 20 and the leading end of the paper P on the discharge tray 22. The sheet is discharged in a state in which the section is located (hereinafter, the state position across the discharge tray 22 and the staple position 23 is referred to as a staple tray position).

  Next, the finisher 20 will be described in more detail based on FIGS. 4 and 5. FIG. 4 is a schematic front view showing the configuration of the finisher 20 in more detail, and FIG. 5 is a top view of FIG.

  As shown in FIGS. 4 and 5, the finisher 20 is driven by a stapler 31 disposed in the vicinity of a discharge port (not shown) of the paper P to the discharge tray 22 in the finisher 20, and a conveyance motor (not shown). A roller pair 32 that conveys the sheet P conveyed through the relay unit 21 in the direction of the stapler 31, a guide plate 33 that guides the sheet P conveyed by the roller pair 32 to the stapler 31, and a sheet that is conveyed to the stapler 31. An inlet sensor 34 that detects the leading edge of P, a paper discharge sensor 35 that detects paper P that has passed through the stapler 31, a paper discharge roller 36 that moves around the stapler 31 and that performs the stapling operation, and a lateral feed A roller 37, a paper holding unit 38 for holding the paper P at the time of stapling, a stopper 39 for regulating the paper position, and the like are provided.

  When the image forming apparatus 1 forms an image on the paper P conveyed from the paper feed tray and does not require a stapling operation, the paper P is provided on an upper portion (not shown) of the image forming apparatus 1. When paper is discharged to the paper discharge unit but a stapling operation is required, the paper P is sent to the finisher 20 via the relay unit 21 and the finisher 20 is driven by a pair of rollers (transport) that is driven by a transport motor (not shown). (Means) 32 conveys the paper P through the finisher 20 to the upper staple 31. The finisher 20 moves the paper discharge roller 36 from the position indicated by the broken line (upper position) when the leading end of the paper P passes the entrance sensor 34 and the rear end of the paper P passes the guide 33 after a predetermined time has passed. The sheet P is lowered to the position of the solid line that contacts the upper surface of the sheet P (lower position), the conveyance of the sheet P is temporarily stopped, the trailing end of the sheet P is dropped to the guide 33 side, and the sheet is discharged by rotating the conveyance motor in the reverse direction. The paper P is conveyed in the reverse direction by the roller 36, and the rear end of the paper P abuts against the stopper 39. In this way, the front end of the paper P is aligned by transporting the paper P in the direction opposite to the transport direction and hitting the stopper 39.

  Next, the finisher 20 lowers the lateral feed roller 37 from the position of the broken line (upper position) to the position of the solid line (lower position) where the lateral feed roller 37 contacts the upper surface of the paper P, so The paper P is held by the feed roller 37. The finisher 20 raises the paper discharge roller 36 to the position of the broken line, holds the paper P only by the lateral feed roller 37, and then rotates the lateral feed roller 37 by a drive motor (not shown) to draw the paper P. 5 is sent in the upward direction, and hits a nest breakthrough (not shown) to align the width direction of the paper P. Therefore, the paper discharge roller 36, the transport roller 37, the paper holding unit 38, and the stopper 39 function as a mounting unit as a whole.

  When the finisher 20 adjusts the staple tray position of the paper P in such a manner as to adjust the position of the paper P to the staple position of the staple 31 in this way, the upper end of FIG. 38, and the transverse feed roller 37 is pushed up from the solid line position to the broken line position.

  Of the series of operations for adjusting and holding the sheet P at the staple tray position, the finisher 20 always keeps the sheet P outside the finisher 20 for the subsequent operations after the discharge roller 36 is lowered to the solid line position. Therefore, the operator can access the paper P, and the operator may pull out the paper P from the finisher 20 during the subsequent operation.

  When the finisher 20 thus holds and adjusts the position of the first sheet P at the staple tray position, the finisher 20 waits for the second and subsequent sheets of paper P to be conveyed, and the second and subsequent sheets of paper are transferred. When transported, the same staple tray position adjustment / holding operation as described above is sequentially repeated. However, when the paper P is moved to the upper side in FIG. 5 by the lateral feed roller 37, the paper holding unit 38 is moved and retracted in the upper direction in FIG. 4 (the direction away from the paper P) to align the paper P. As a result, the plurality of sheets P are adjusted and held at the staple tray position.

  Then, the finisher 20 counts the number of sheets P that have passed through the entrance sensor 34, and when the sheet P is held at the staple tray position by the number of sheets to be stapled, or when the maximum number of sheets that can be stapled is held, the stapler. 31 is driven to perform a stapling process on the stapling position of the paper P. When performing the stapling process, the finisher 20 lowers the paper discharge roller 36 to the position indicated by the solid line, and rotates the paper discharge roller 36 serving as a paper discharge unit by a conveyance motor (not shown) so that the bundle of sheets P after the staple process is loaded. It is completely discharged onto the discharge tray 22. The finisher 20 confirms the completion of the discharge of the bundle of sheets P to the discharge tray 22 and the presence or absence of the sheet P at the staple tray position based on the output of the discharge sensor (detection means) 35.

  Next, the operation of this embodiment will be described. The image forming apparatus 1 according to the present exemplary embodiment forms an image with settings for performing stapling, and when the paper P is placed on the staple tray position of the finisher 20, the paper P is pulled out by an operator. Process appropriately.

  In other words, the image forming apparatus 1 sets whether or not to enable jam detection when the paper is removed from the staple position 23 by using the mode selection switch of the operation display unit, and issues a print instruction with the setting for stapling. When this is done, as shown in FIG. 3, printing on the plotter 3 is started (step S101), and the paper P printed on the plotter 3 is sequentially discharged to the finisher 20 (step S102).

  The finisher 20 positions the stapled portion of the printed paper P, which is sequentially sent, at the staple position 23 in the finisher 20 and the leading end portion of the paper P on the discharge tray 22 ( When the image forming apparatus 1 sequentially discharges the image-formed (printed) sheets P to the finisher 20, the bundle of sheets P at the staple tray position reaches the staple start number. Alternatively, printing is sequentially performed until the number of sheets P reaches the number of staples, and the printed sheets P are conveyed to the finisher 20 (steps S102 and S103).

  In step S103, when the paper P is loaded by the number of sheets to be stapled, or when the number of sheets P that can be stapled is loaded, the paper bundle pull-out control unit 14 has a bundle of paper P at the staple tray position. That is, it is checked whether the bundle of sheets P has been pulled out by the operator (step S104). When there is a bundle of sheets P, the finisher 20 executes the stapling process on the bundle of sheets P, and after the stapling, The bundle of sheets P is discharged onto the discharge tray 22 (step S105).

  The image forming apparatus 1 checks whether there is image data to be subsequently printed (step S106), and when printing is to be continued, returns to step S102 and performs the same processing as above (steps S102 to S106).

  When printing is not performed subsequently in step S106, the image forming apparatus 1 ends the printing operation and ends the process (step S107).

  In step S104, when there is no paper P at the staple tray position, the paper bundle pull-out control unit 14 determines whether jam detection is enabled by the mode selection switch, that is, the user sets the paper P at the staple tray position. Whether the jam is detected or not is checked (step S108). If the jam detection is enabled, the CPU 4 is notified of the jam detection, and the CPU 4 displays the operation unit display via the operation display control unit 7. The finisher discharge jam is displayed on the display, the printing operation (image forming operation) is stopped, and it is confirmed that the jam clearing operation, for example, the door opening / closing operation of the finisher 20 has been performed (step S109). Returning, the printing operation is started again from the beginning (steps S101 to S109).

  In step S108, the mode selection switch is set to disable jam detection. That is, when there is no paper P at the staple tray position, it is determined that the user has pulled out the paper from the staple tray position and is not determined as a jam. Then, the control unit 14 at the time of pulling out the paper bundle stops the stapling operation scheduled to be performed on the bundle of the paper P that has been pulled out, ends the processing related to the stapling, and the image forming apparatus 1 continues printing. It is checked whether there is image data to be processed (step S106). When printing is subsequently performed, the process returns to step S102 and the same processing as described above (steps S102 to S106). When printing is not performed subsequently in step S106, the image forming apparatus 1 ends the printing operation and ends the process (step S107).

  As described above, the image forming apparatus 1 according to the present exemplary embodiment sequentially conveys the image-formed paper P to the finisher 20 that performs finisher processing such as stapling, and the finisher 20 finishes the paper P that is sequentially conveyed. When the sheets are sequentially placed at the staple position 23 and the finisher processing number is reached, the stapling process is executed on the bundle of sheets P, and the sheet P is discharged onto the discharge tray (discharge tray) 22 and the staple process is performed. When there is no image-formed paper P at the staple position 23 at the time of transition, it is recognized that a paper jam has occurred, and when the image forming operation and the staple processing operation are stopped, the image formation at the staple position 23 is performed before the staple processing. When the used paper P runs out, it is not recognized that a paper jam has occurred.

  It should be noted that the determination as to whether or not there is a bundle of sheets P at the staple tray position by the sheet bundle pull-out time control unit 14 may be performed at any time during the image forming operation, other than the normal control operation during the image forming operation. If a bundle of sheets P cannot be detected at the staple tray position, the operator indicates that the bundle of sheets P has been pulled out by the operator. Since the stapling process is performed in a state where there is no P bundle or paper P, the stapling process can be similarly controlled so that the re-output by the recovery process is not performed.

  Therefore, even if the user who is in a hurry takes out the sheet bundle of the image-formed paper P from the staple position 23, the user can save the trouble of performing a recovery process at the time of jamming, thereby improving the usability. it can.

  Further, when the image forming apparatus 1 according to the present embodiment does not recognize the paper jam, the image forming process on the other paper P having the same image as the image forming performed on the discharged paper P and the image forming completed. Discharging operation and stapling of the paper P to the finisher 20 are prohibited.

  Therefore, it is possible to reduce wasteful resource consumption and wasteful processing time by re-outputting the same image as the image-formed paper bundle that has been intentionally removed by the user, thereby reducing resource consumption. In addition, the usability can be improved.

  Further, when the image forming apparatus 1 according to the present exemplary embodiment does not recognize the paper jam, the image forming apparatus 1 stops the staple processing to be performed on the discharged paper P.

  Accordingly, it is possible to suppress the occurrence of stapling of staples due to staple blanking or the like in the absence of paper P, thereby reducing resource consumption and preventing occurrence of defects. Can be improved.

  Further, the image forming apparatus 1 according to the present embodiment determines whether or not to recognize that a paper jam has occurred when there is no image-formed paper P at the staple position 23 before stapling. Processing is performed according to selection of the selection switch.

  Accordingly, in the case of rushing, the user can arbitrarily select whether to permit removal of the image-formed paper P before stapling processing or to always complete and end the stapling processing. It is possible to perform processing according to the above, and to further improve the usability.

  The invention made by the present inventor has been specifically described based on the preferred embodiments. However, the present invention is not limited to the above, and various modifications can be made without departing from the scope of the invention. Needless to say.

  The present invention can be applied to an image forming apparatus that appropriately improves a problem caused when a sheet discharged to a finisher that performs finisher processing such as stapling processing is taken away before the finisher processing.

1 is a block diagram of an image forming apparatus to which an embodiment of the image forming apparatus of the present invention is applied. FIG. 2 is a schematic external configuration diagram of the image forming apparatus of FIG. 1 with a finisher. FIG. 3 is a flowchart showing a paper drawing control process by the image forming apparatus of FIG. 1. FIG. FIG. 3 is a schematic front view of the finisher in FIG. 2. FIG. 5 is a top view of the finisher of FIG. 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Scanner 3 Plotter 4 CPU
5 SAF memory 6 Encoding / decoding unit 7 Operation display control unit 8 Communication control unit (CCU)
9 NCU
10 Modem 11 ROM
12 RAM
13 Network interface control unit 14 Paper bundle pulling out control unit 15 Bus 20 Finisher 21 Relay unit 22 Discharge tray 23 Staple position 31 Stapler 32 Roller pair 33 Guide plate 34 Inlet sensor 35 Discharge sensor 36 Discharge roller 37 Horizontal feed roller 38 Paper Holding part 39 Stopper

Claims (4)

  A finisher that performs a finisher process such as a staple process on a bundle of sheets on which images have been formed, a conveying unit that sequentially conveys the image-formed sheets to the finisher, and sequentially places the sequentially conveyed sheets at the finisher processing position. When the placed sheets become a sheet bundle of the finisher processing number of sheets, the finisher process is performed on the bundle of sheets and the sheet is discharged onto a sheet discharge tray. A detection means for detecting the presence or absence of a sheet bundle is provided, and when execution of finisher processing is designated, if the detection means detects that there is no sheet bundle before finisher processing, it is not recognized that a paper jam has occurred, An image forming apparatus that continues an image forming operation.   2. The image forming apparatus according to claim 1, wherein when the paper jam is not recognized, the image forming apparatus prohibits a re-image forming process on another paper having the same image as the image formed on the discharged paper. Image forming apparatus.   3. The image forming apparatus according to claim 1, wherein when the image forming apparatus does not recognize the paper jam, the finisher process for the loaded paper is stopped. 4. The image forming apparatus includes a mode selection unit, and determines whether or not to recognize the occurrence of the paper jam when the image-formed paper at the finisher processing position runs out before the finisher processing. The image forming apparatus according to claim 1, wherein the image forming apparatus performs processing according to selection of a unit.

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