JP7404730B2 - Paper processing device and image forming device - Google Patents

Description

The present invention relates to a paper processing device and an image forming device.

2. Description of the Related Art Conventionally, post-processing devices (paper processing devices) are known that perform various post-processing such as cutting, perforation, binding, and crease processing on sheets on which images have been formed by an image forming apparatus main body.

Japanese Patent Application Publication No. 2006-321000 JP2008-36838A

Incidentally, in a post-processing apparatus, there are cases where a processing unit that performs processing by transporting paper and a processing unit that performs processing by stopping transport of paper are mixed. For example, there is a process of cutting in the paper transport direction and a process of cutting in the paper width direction.
In this case, in order to improve temporal and spatial efficiency, the processing position of the processing unit that stops transporting the paper is placed within the transport section where the processing unit that transports the paper performs the processing. There may be cases where In this case, it is necessary to temporarily stop transporting the paper and perform the latter process.
However, if the paper is temporarily stopped during the conveyance section where the paper is conveyed and processed by the processing unit, the effect of this will appear on the processed product (printed matter), and there is a risk that the processing quality will deteriorate. .

The present invention has been made in view of the problems in the prior art described above, and an object of the present invention is to process paper efficiently without degrading the processing quality.

An image forming apparatus according to one aspect of the present invention includes:
An image forming apparatus comprising an image forming section that forms an image on paper, and a paper processing device that performs post-processing on the paper on which the image is formed by the image forming section,
The paper processing device includes:
disposed downstream of the image forming section in the paper conveyance direction,
a paper transport unit that transports the paper on which an image has been formed by the image forming unit;
a first type processing unit that performs first type processing on the paper in cooperation with the paper conveyance by the paper conveyance unit;
a second type processing unit that performs a second type of processing on the paper while the paper conveyance unit stops conveying the paper;
a control unit that controls the paper transport unit, the first type processing unit, and the second type processing unit,
The control unit is capable of change control for changing the operating state of the first type processing unit for one sheet of paper in accordance with the operation of the second type processing ,
The operating state is changed by the change control from a driving state to a driven state with respect to sheet conveyance.

According to the present invention, paper can be processed efficiently without degrading processing quality.

1 is a diagram showing an internal configuration of an image forming apparatus according to an embodiment of the present invention. FIG. 1 is a functional block diagram showing a control structure of an image forming apparatus according to an embodiment of the present invention. 1 is a schematic side view of main elements in a paper processing device according to an embodiment of the present invention; FIG. 1 is a schematic diagram of main elements in a paper processing device according to an embodiment of the present invention viewed from above. 4 is a schematic diagram of main elements in a paper processing device according to an embodiment of the present invention viewed from above, and is partially different from FIG. 4. FIG. 3 is a flowchart of paper processing according to an embodiment of the present invention. 9 is a schematic diagram showing an apparatus configuration corresponding to the timing chart of FIG. 8. FIG. 3 is a timing chart of paper processing according to an embodiment of the present invention. An example of paper processing to which the timing chart according to FIG. 8 is applied is shown.

An embodiment of the present invention will be described below with reference to the drawings. The following is one embodiment of the present invention and is not intended to limit the present invention.

[Overview of image forming device]
As shown in FIGS. 1 and 2, the image forming apparatus 1 according to the present embodiment includes an image forming apparatus main body 100, a relay unit RU, a post-processing device (paper processing device) 200, and a finisher FS. It is composed of

The image forming apparatus main body 100 forms a color image using an electrophotographic method based on image data obtained by reading an image from a document or image data received from an external device.
As shown in FIGS. 1 and 2, the image forming apparatus main body 100 includes an operation section 11, a display section 12, a document reading unit 13, an image forming section 14, a paper feeding section 15, and an image forming control section 16. , a storage section 17 , a controller IF (Inter Face) 18 , and an image processing section 19 .

The operation unit (receiving means) 11 includes a touch panel formed to cover the display screen of the display unit 12, various operation buttons such as numeric buttons, and a start button, and uses operation signals based on user operations to control image formation. output to section 16.

The display section (display means) 12 is constituted by an LCD (Liquid Crystal Display), and displays various screens according to instructions of display signals input from the image forming control section 16.

The document reading unit 13 includes an ADF (automatic document feeder), a scanner, and the like, and outputs image data obtained by reading an image of the document to the image forming control section 16.

The image forming section 14 forms an image on the paper supplied from the paper feeding section 15 based on the image data subjected to image processing by the image processing section 19 .
The image forming section 14 includes photosensitive drums 141Y, 141M, 141C, and 141K corresponding to each color of yellow (Y), magenta (M), cyan (C), and black (K), an intermediate transfer belt 142, and a secondary transfer roller. 143, a fixing section 144, a density sensor 145, and the like.

After the photosensitive drum 141Y is uniformly charged, it is scanned and exposed with a laser beam based on yellow image data to form an electrostatic latent image. Then, yellow toner is attached to the electrostatic latent image on the photoreceptor drum 141Y, and development is performed.
The photoreceptor drums 141M, 141C, and 141K are also the same as the photoreceptor drum 141Y except that they handle different colors, so their description will be omitted.

The toner images of each color formed on the photoreceptor drums 141Y, 141M, 141C, and 141K are sequentially transferred onto the rotating intermediate transfer belt 142 (primary transfer). That is, a color toner image in which toner images of four colors are superimposed is formed on the intermediate transfer belt 142.
The color toner images on the intermediate transfer belt 142 are transferred all at once onto the paper by a secondary transfer roller 143 (secondary transfer).

The fixing unit 144 includes a heating roller that heats the paper onto which the color toner image has been transferred, and a pressure roller that presses the paper, and fixes the color toner image on the paper by heating and pressure.

The paper feed section 15 includes paper feed trays T11 to T13, and supplies paper to the image forming section 14. Each of the paper feed trays T11 to T13 stores paper of a predetermined paper type and size for each paper feed tray.

The image forming control section (control means) 16 includes a CPU, a ROM, and a memory.
The CPU reads various processing programs stored in the ROM, and centrally controls the operations of each part of the image forming apparatus main body 100 according to the programs. Further, when performing post-processing on the output paper, the CPU issues an instruction to the post-processing device 200 to perform predetermined post-processing.
The ROM is composed of a nonvolatile semiconductor memory or the like, and stores various processing programs, parameters, files, etc. necessary for executing the programs.
The memory is composed of a DRAM (Dynamic Random Access Memory) or the like, and temporarily stores various data such as programs and image data related to various image processing.

The storage unit 17 is a nonvolatile storage device such as an HDD (Hard Disk Drive) or a semiconductor memory that stores various data such as programs and image data. The storage unit 17 stores data such as program data and various setting data in a readable and writable manner from the image forming control unit 16 .

The controller IF 18 receives image data input from an external device.

The image processing unit 19 performs necessary image processing on the image data stored in the storage unit 17, the image data obtained by reading the image from the original by the original reading unit 13, and the image data input from an external device, and converts the image into an image. The processed image data is sent to the image forming section 14. Image processing includes gradation processing, halftone processing, color conversion processing, and the like. Gradation processing is a process of converting the gradation value of each pixel of image data into a gradation value that is corrected so that the density characteristics of the image formed on the paper match the target density characteristics. The halftone processing includes error diffusion processing, screen processing using systematic dithering, and the like. The color conversion process is a process of converting each RGB gradation value into each CMYK gradation value.

The relay unit RU is installed between the image forming apparatus main body 100 and the post-processing apparatus 200, and has a function of synchronizing the conveyance speed of the paper conveyed from the image forming apparatus main body 100.

The post-processing device 200 is a device that performs post-processing on the paper output from the relay unit RU, if necessary. Examples of post-processing include slitter processing, gutter slitter processing, CD cutting processing, crease processing, FD/CD sewing machine processing, and the like. The post-processing is not essential, and the post-processing device 200 executes it only when instructed by the image forming apparatus main body 100. If there is no post-processing, the post-processing device 200 directly transports the transported sheet to the finisher FS.

As shown in FIGS. 1 and 2, the post-processing device 200 includes a paper transport section 210, post-processing units M1 to M4, a purge tray T1 that discharges the paper to be purged from the post-processing device 200, and a post-processing device 200. The printer is configured to include a card tray T2 for discharging paper cut to the size of a business card/card, and a post-processing control section 220.

The paper transport unit 210 transports the paper transported from the relay unit RU to the post-processing units M1 to M4, and transfers the paper that has been post-processed in the post-processing units M1 to M4 to various trays (purge tray T1, card tray T2). Or transport it to the finisher FS.

The paper conveyance unit 210 has a straight conveyance path 211 that has a bend correction function to correct the bend of the paper conveyed to the post-processing unit M1, and a straight conveyance path 211 that detours the long paper conveyed to the post-processing unit M1 in the CD direction (sheet width direction). ), and a reversing paper discharge path 213 that reverses the paper (paper up to a standard size) after post-processing by the post-processing units M1 to M4 and discharges the paper to the finisher FS. , a dual-purpose path 214 that serves as a paper discharge path for discharging paper to purge tray T1 and a reversing route for reversing paper (up to standard size paper), and a dual-purpose path 214 for reversing long sheets after post-processing by post-processing units M1 to M4. The elongated unit 215 serves as a reversal path.

The post-processing units M1 to M4 perform post-processing on the transported paper. The post-processing units M1 to M4 perform post-processing while a part of the paper is accommodated in the space path (reverse paper ejection path 213, dual-use path 214, or long unit 215).

The post-processing control unit 220 includes a CPU, ROM, and memory.
The CPU reads various processing programs stored in the ROM, and centrally controls the operation of each part of the post-processing device 200 according to the programs. For example, the CPU transmits information to the image forming control unit 16 of the image forming apparatus main body 100, and when a setting for reversing the post-processing position is received via the operation unit 11, the CPU performs post-processing based on the setting. The processing units M1 to M4 are made to perform the processing.

The finisher FS has functions for stapling, folding, punching, etc. on the paper after image formation.

[Post-processing interrupt control]
Next, a case where there is an interruption of processing in the CD direction during the period of processing in the FD direction (paper transport direction) in the post-processing apparatus 200 will be described with reference to FIGS. 3 to 9.
First, a specific processing example will be given.
As shown in FIGS. 3 and 4, post-processing units M1 to M4 are lined up from the upstream side of paper conveyance.
The post-processing unit M1 performs a process of cutting the paper S in the FD direction, and has a cutting blade M1a that rotates around an axis in the CD direction.
The post-processing unit M2 performs a process of perforating paper in the CD direction, and has a perforation blade M2a that rotates around an axis in the FD direction and moves in the CD direction.
The post-processing unit M3 performs a process of attaching a perforation surface in the FD direction to the paper S, and has a perforation blade M3a that rotates around an axis in the CD direction.
Note that a pulley for holding down the paper is usually arranged at a position facing the rotary blade.
The post-processing unit M4 performs a process of cutting the paper S in the CD direction, and includes an upper movable blade M4a and a lower fixed blade M4b having blades extending in the CD direction. The upper movable blade M4a moves up and down.
As shown in FIG. 5, the post-processing unit M3 may perform gutter slitter processing in which the paper S is cut along two cutting lines in the FD direction.
The processing in the FD direction is performed on the paper S in cooperation with the transport of the paper S by the paper transport section 210. That is, this is the first type of processing. Therefore, the post-processing unit M1 and the post-processing unit M3 are first type processing units.
The processing in the CD direction is performed on the paper S while the paper transport unit 210 stops transporting the paper S. That is, this is the second type of processing. Therefore, the post-processing unit M2 and the post-processing unit M4 are first type processing units.
The post-processing control unit 220 controls the paper conveying unit 210, the first type processing units M1, M3, and the second type processing units M2, M4 to control post-processing as follows.

As shown in FIG. 6, the post-processing control unit 220 obtains post-processing information and image information from the image forming control unit 16 (S1, S2).
Next, the post-processing control unit 220 determines whether CD direction processing (second type processing) is necessary during FD direction processing (first type processing) based on the above-mentioned post-processing information (S3). .
If Yes in step S3, the post-processing control unit 220 determines whether or not the FD direction processing is within the image area based on the post-processing information and image information (S4). Thereby, the post-processing control unit 220 determines whether or not to execute change control based on the target position of the first type of processing on the sheet S and the image information. The FD direction processing here is limited to that which is interrupted by the CD direction processing.
As described above, the post-processing control unit 220 acquires the image information formed on one sheet S, and when the second type of processing is performed on the one sheet S during the period of the first type of processing, Next, it is determined whether or not to perform change control based on the image information.

In the case of Yes in step S4, the post-processing control unit 220 stops paper conveyance and transfers the paper to the second type processing unit (M2 or M4) when the paper comes to the CD direction processing position during the FD direction processing period. performs the CD direction processing. Then, during the CD direction processing, the operation of the first type processing unit (M1 or M3) in charge of the FD direction processing is stopped (S5). If it is the post-processing unit M1, the rotation of the cutting blade M1a is stopped. If it is the post-processing unit M3, the rotation of the perforation blade M3a is stopped. Here, as a method of stopping the rotation, it is possible to make the rotation follow the conveyance of the paper S. Therefore, the sheet conveyance is temporarily stopped, but when the sheet conveyance is resumed, the blades (M1a, M3a) come into contact with the sheet S, follow the sheet S, and resume rotation.

Similarly, in the case of No in step S3 or No in step S4, the post-processing control unit 220 stops paper conveyance and starts the second The seed processing unit (M2 or M4) is caused to execute the CD direction processing. However, during the CD direction processing, the operation of the first type processing unit (M1 or M3) in charge of the FD direction processing is continued (S6). If it is the post-processing unit M1, the rotation of the cutting blade M1a is continued. If it is the post-processing unit M3, the perforation blade M3a continues to rotate.
In any case, before the FD direction processing (first type processing) is interrupted by the CD direction processing interruption, the first type processing unit (M1 or M3) is in the driving state.

The post-processing control unit 220 executes the post-processing under the above condition settings (S7).
This will be specifically explained using examples shown in FIGS. 3 and 4. In this example, a case will be described in which the perforation blade M3a is controlled to change from a driving state to a driven rotation.
In FIG. 4, a solid line frame P1 in the sheet S indicates a planned cutting line, a broken line P2 indicates a planned perforation line in the FD direction, a broken line P3 indicates a planned perforation line in the CD direction, and a dashed line I indicates an image area. In addition, in FIG. 5, a dashed-dotted line P4 indicates a planned groove slit line.
In this example, the operation of the post-processing unit M3 (FD direction perforation unit) will be explained in particular.
When the printed paper S is transported in the image forming apparatus main body 100 and the FD/CD direction cutting and FD/CD direction perforation are processed as shown in FIG. 4, the processing order is as follows. .
(1) Start of FD cutting → (2) Start of perforation in FD direction → (3) Execution of cutting in CD direction (tip side) → (4) Execution of perforation in CD direction → (5) End of cutting in FD direction → (6) FD direction End of perforation → (7) Cutting in CD direction (rear end side)

To explain the above process in detail, (1) the end face cutting process is started by the FD direction cutting post-processing unit M1 disposed on the upstream side of the sheet S; Next (2) when the leading edge of the paper S reaches the position of the perforation blade M3a in the FD direction, the FD direction perforation process is started. At this time, the rotation of the perforation blade M3a in the FD direction is started before the paper S enters, and the rotation of the perforation blade M3a is controlled so that the speed is the same as the paper conveyance speed when the paper S enters. Next, (3) the paper S is temporarily stopped at the cutting position on the leading edge side of the paper, and the post-processing unit M4 for cutting in the CD direction performs cutting processing in the CD direction. Here, the perforation blade M3a whose rotation is controlled in the above (2) is cut off from the transmission from the drive motor in advance so that it rotates following the paper. After the CD direction cutting process, the paper is transported again, (4) it is stopped at the CD direction perforation processing position, the CD direction perforation processing is performed by the CD direction perforation post-processing unit M2, and the paper is transported again. (5) FD direction cutting and (6) FD direction perforation are carried out to the trailing edge of the paper and are completed. (7) The paper is stopped at the CD direction cutting position at the trailing edge of the paper, and post-processing of CD direction cutting is performed. Unit M4 performs CD direction cutting processing, and the processing sequence for one sheet S is completed.

In order to carry out the above sequence, the first type processing units M1 and M3 switch between rotational drive of the cutlery (M1a, M3a) and rotational freedom separated from the drive motor according to a control command from the post-processing control unit 220. is made possible. It is sufficient for the blades (M1a, M3a) to follow the paper only in the transport direction. Therefore, by inserting a one-way clutch into the rotating shaft of the cutter (M1a, M3a), the driven state of the cutter (M1a, M3a) relative to the paper can be realized by stopping the rotation of the drive motor.

As described above, the post-processing control unit 220 controls the operating state of the first type processing units (M1, M3) during the first type processing for one sheet S, and the second type processing during the same period. It is possible to control changes to correspond to the operation of the system. Based on the user's operation via the operation unit (acceptance means) 11, it is possible to select and set whether or not to apply the change control. When applying the same change control, it may also be possible to select and set the application with conditions such as paper type.
Specifically, the operating state is changed by the change control from a driving state to a stopped state. Further, the stopped state is a temporary stop due to being in a driven state with respect to conveyance of the paper, and the perforation blade M3a stops rotating when the conveyance of the paper S is stopped.
In addition, in the change control, the post-processing control unit 220 changes the operating state of the first-type processing unit during the first-type processing period for one sheet S to correspond to the start of the second-type processing operation. After the change, it is maintained even after the second type of processing ends. Therefore, the perforation blade M3a rotates as the sheet S is resumed being conveyed.

A specific example will be further described with reference to FIGS. 7, 8, and 9.
FIG. 8 shows an apparatus configuration corresponding to the timing chart of FIG. 8, and FIG. 9 shows an example of paper processing. A post-processing unit M10 that performs perforation in the FD direction and a post-processing unit M20 that performs perforation in the CD direction are lined up from the upstream side in the paper conveyance direction. The post-processing unit M10 has a perforation blade M10a. The post-processing unit M20 has a perforation blade M20a.
The drive system and sensors in FIG. 7 and the drive signals and sensor signals in FIG. 8 are given common symbols (M01 to M07) to clearly indicate their correspondence. Sensors M01, M03, M05, and M07 detect the timing of paper passage.
Trigger signals t1 to t11 are shown in FIG. The convex signal SA indicated by the broken line is a drive signal used when restarting the drive rotation of the perforation blade M10a in the post-processing unit M10 after the processing in the post-processing unit M20, but it is not implemented here. When the driving of the perforation blade M10a is stopped along with paper conveyance by the trigger signal t3, the perforation blade M10a is stopped in a state where it can be driven. When the paper conveyance is restarted by the trigger signal t6, the perforation blade M10a also restarts rotation by being driven.

A detailed explanation is as follows.
When the printed paper S is received from the image forming apparatus main body 100 and the paper S is detected by the entrance sensor M01, the paper transport drive is turned on and each transport roller is driven to transport the paper within the post-processing apparatus 200. Control is started (t1). When the paper S is detected by the FD timing sensor M03, the FD perforation drive M04 is turned on after a predetermined time to start processing the FD perforation P01 (t2). After that, the CD timing sensor M05 detects the paper S, and after transporting the paper to a preset position where CD perforation processing is performed, the paper transport drive is turned off to stop the paper S, and the FD perforation drive M04 is turned off. (t3, t4), the CD perforation drive M06 is turned on to start processing the CD perforation P02 (t5).
During this CD perforation process, the FD perforation drive is also turned off in conjunction with the stoppage of the paper S, so the rotation of the perforation blade M10a is stopped.
When the CD perforation process is completed, the paper transport drive M02 is turned ON, and the FD perforation drive is kept OFF to start paper transport control and restart the FD perforation process (t6). The FD perforation process is performed by conveying the paper S in contact with the perforation blade M10a, using the paper conveyance as the motive power.
Thereafter, when the trailing edge of the sheet S is detected by the FD timing sensor M03, the FD perforation drive M04 is turned off after a predetermined period of time, and the processing of the FD perforation P01 is ended (t7).
Thereafter, after detecting the trailing edge of the paper S with the CD timing sensor M05, the paper S is transported to a preset position for processing the CD perforation P03, and the paper transport drive M02 is turned off (t8). Processing of the CD perforation P03 is performed (t9), and after completion, the paper is transported again (t10), and after a predetermined time has elapsed since the trailing edge of the paper S is detected by the exit sensor M07, the paper transport drive M02 is turned off. The series of processing operations for one sheet S ends (t11).

As mentioned above, if the paper is temporarily stopped within the transport section where the processing unit that transports the paper performs the processing, the effect of this will appear on the processed product (printed matter) and there is a risk that the processing quality will deteriorate. There is.
However, according to the present embodiment, since the rotation of the blade for FD direction processing is temporarily stopped if necessary, the paper can be processed efficiently without degrading the processing quality.
A detailed explanation is as follows.
When multiple processes have to be performed on one sheet of paper in parallel, for example when CD direction processing is performed during FD direction processing, the paper is processed with the blade rotating during FD direction processing. It is necessary to perform processing while conveying the paper, but if CD direction processing is performed during this processing, it is necessary to stop the paper.
At this time, since the FD direction processing is temporarily stopped by stopping conveyance of the paper, the rotation of the blade for the FD direction processing may be continued or may be stopped.
However, there are problems with each. If the rotation of the blade is stopped, if the blade does not reach the specified rotation speed before conveying the paper again, the cutting edge of the paper may become dull and the cross-section may not be finished neatly. This may have an impact on the decline.
In addition, if the blade continues to rotate and the cutting blade is located within the image area as shown in Figures 4 and 5, it will continue to scrape the image and stain the side of the blade, which will further stain the edge of the paper. There are cases where this happens.
Therefore, according to the present embodiment, the rotating operation of the blade in FD direction processing is based on the processing status of other CD direction processing units, the image position and the processing position, etc., and the blade is stopped at a position where an image is present. Appropriate control allows paper to be processed efficiently without degrading processing quality.

In the above embodiments, perforation is mainly taken as an example of the processing in the CD direction to be interrupted and the processing in the FD direction to be interrupted. However, the processing in the CD direction to be interrupted and the processing in the FD direction to be interrupted are not limited to this. , cutting, groove slitting, scoring, creasing, etc.
Furthermore, in the above embodiments, the interrupting process is the process in the CD direction, but the interrupting process may be the second type of process that is performed on the paper while the paper transporting section 210 stops transporting the paper. For example, the punching process of punching a round hole at a predetermined position on a sheet of paper needs to be performed while the conveyance of the sheet is stopped. This can be a process that interrupts the process.
Further, in the above embodiments, the interrupted process is the process in the FD direction, but the interrupted process may be any type of process that is performed on the paper in cooperation with the conveyance of the paper by the paper conveyance unit 210. This is because the second type of processing, which is performed by stopping paper conveyance, may be interrupted.
Furthermore, in the above embodiments, an example has been mainly described in which the driving state is changed from the driving state to the driven state, and then the driven rotation is performed when paper transport is resumed. However, after the driving state is forced to stop, the driving is restarted. You can.

1 Image forming device 14 Image forming unit 100 Image forming device main body 200 Post-processing device (paper processing device)
210 Paper transport section 211 Straight transport path 220 Post-processing control section M1 to M4 Post-processing unit S Paper

Claims (16)

An image forming apparatus comprising an image forming section that forms an image on paper, and a paper processing device that performs post-processing on the paper on which the image is formed by the image forming section,
The paper processing device includes:
disposed downstream of the image forming section in the paper conveyance direction,
a paper transport unit that transports the paper on which an image has been formed by the image forming unit;
a first type processing unit that performs first type processing on the paper in cooperation with the paper conveyance by the paper conveyance unit;
a second type processing unit that performs a second type of processing on the paper while the paper conveyance unit stops conveying the paper;
a control unit that controls the paper transport unit, the first type processing unit, and the second type processing unit,
The control unit is capable of change control for changing the operating state of the first type processing unit for one sheet of paper in accordance with the operation of the second type processing ,
The operating state is changed by the change control from a driving state to a driven state with respect to sheet conveyance . In the change control, the control unit changes the operating state of the first type processing unit during the first type processing for one sheet of paper in accordance with the start of operation of the second type processing. The image forming apparatus according to claim 1 , wherein the image forming apparatus is maintained even after the second type of processing is completed . The first type processing unit has a cutter that performs the first type of processing, and is capable of switching between rotational drive of the cutter and free rotation separated from the drive motor by a control command from the control unit. The image forming apparatus according to claim 2. An image forming apparatus comprising an image forming section that forms an image on paper, and a paper processing device that performs post-processing on the paper on which the image is formed by the image forming section,
The paper processing device includes:
disposed downstream of the image forming section in the paper conveyance direction,
a paper transport unit that transports the paper on which an image has been formed by the image forming unit;
a first type processing unit that performs first type processing on the paper in cooperation with the paper conveyance by the paper conveyance unit;
a second type processing unit that performs a second type of processing on the paper while the paper conveyance unit stops conveying the paper;
a control unit that controls the paper transport unit, the first type processing unit, and the second type processing unit,
The control unit is capable of change control for changing the operating state of the first type processing unit for one sheet of paper in accordance with the operation of the second type processing ,
The control unit acquires image information to be formed on one sheet of paper, and when the second type of processing is performed for the one sheet of paper during the period of the first type of processing, the control unit applies information to the image information. An image forming apparatus that determines whether or not to execute the change control based on the change control . The image forming apparatus according to claim 4 , wherein the control unit determines whether to execute the change control based on the target position of the first type of processing on the paper and the image information . The image forming apparatus according to any one of claims 1 to 5 , further comprising a synchronous conveyance section for synchronizing the conveyance speed of the paper conveyed from the image forming section. The image forming apparatus according to claim 6 , wherein the synchronous conveyance section is arranged between the image forming section and the paper processing device. The paper transport unit includes a first path for transporting the paper to the first type processing unit and the second type processing unit, and a second path capable of detouring and transporting the long paper. The image forming apparatus according to any one of claims 1 to 7 . The first type processing unit performs post-processing on the paper in the paper transport direction using a blade that performs the first type of processing, and the second type processing unit performs post-processing on the paper in the paper transport direction using the blade that performs the second type of processing. The image forming apparatus according to any one of claims 1 to 8 , wherein post-processing is performed on the paper in a direction perpendicular to the conveyance direction. a paper transport unit that transports paper;
a first type processing unit that performs first type processing on the paper in cooperation with the paper conveyance by the paper conveyance unit;
a second type processing unit that performs a second type of processing on the paper while the paper conveyance unit stops conveying the paper;
a control unit that controls the paper transport unit, the first type processing unit, and the second type processing unit,
The control unit is capable of controlling a change in the operating state of the first type processing unit for one sheet of paper from a driving state to a driven state with respect to conveyance of the sheet in accordance with the operation of the second type of processing. paper handling equipment. In the change control, the control unit changes the operating state of the first type processing unit during the first type processing for one sheet of paper in accordance with the start of operation of the second type processing. The paper processing apparatus according to claim 10 , wherein the paper processing apparatus is maintained even after the second type of processing is finished. The first type processing unit has a cutter that performs the first type of processing, and is capable of switching between rotational drive of the cutter and free rotation separated from the drive motor by a control command from the control unit. The paper processing device according to claim 11 . a paper transport unit that transports paper;
a first type processing unit that performs a first type of processing on the paper in cooperation with the paper transport by the paper transport unit;
a second type processing unit that performs a second type of processing on the paper while the paper conveyance unit stops conveying the paper;
a control unit that controls the paper transport unit, the first type processing unit, and the second type processing unit,
The control unit executes change control for changing the operating state of the first type processing unit for one sheet of paper in accordance with the operation of the second type of processing based on image information formed on one sheet of paper. A paper processing device that determines whether or not to The paper processing apparatus according to claim 13 , wherein the control unit determines whether or not to execute the change control based on the target position of the first type of processing on the paper and the image information. The first type processing unit performs post-processing on the paper in the paper transport direction using a blade that performs the first type of processing, and the second type processing unit performs post-processing on the paper in the paper transport direction using the blade that performs the second type of processing. The paper processing device according to any one of claims 10 to 14 , wherein post-processing is performed on the paper in a direction perpendicular to the conveying direction. an image forming unit that forms an image on paper;
An image forming apparatus comprising: a paper processing apparatus according to any one of claims 10 to 15 , which is a post-processing apparatus that performs post-processing on a paper sheet on which an image has been formed by the image forming section.

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