JP2003341911A - Sheet treating device and image forming device equipped with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet treating device and an image forming device equipped with it, capable of managing well with occurrence of a abnormal sheet carrying condition in the upstream of the part whereto sheets are fed, and of smoothly restarting the job after the abnormal condition is released by changing the treatment for the sheets which have been carried by that time. <P>SOLUTION: The sheet treating device 50 is equipped with a stapler 15 to apply a treatment to the fed sheet, a pair of bundle delivery rollers 5 to carry the sheets stacked on an aligning stage 4 whereon the stapled sheets are stacked, and a CPU 41 which interrupts the job upon stacking the sheets on the aligning stage when the fed sheets are in an abnormal condition, delivers the sheets stacked on the aligning stage without applying the treatment while it controls the pair of bundle delivery rollers when the job interrupt information is given, and delivers the sheets stacked on the aligning stage upon applying the treatment while it controls the stapler and the pair of bundle delivery rollers when the continuation information is given. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet processing apparatus for processing a fed sheet, and more particularly to changing the processing of a sheet when the fed state of the fed sheet becomes abnormal. The present invention relates to a sheet processing apparatus that can be used, and an image forming apparatus that includes the sheet processing apparatus as one of the constituent elements and that processes a sheet on which an image has been formed by the sheet processing apparatus.

[0002]

2. Description of the Related Art Conventionally, in a sheet processing apparatus, an aligning process for aligning end portions of a sheet bundle, a stapling process for binding a sheet bundle, a perforating process for punching a sheet or a sheet bundle, and a bending process for bending a sheet or a sheet bundle. At least one process such as a process is performed.

Further, the sheet processing apparatus is, for example, installed in the apparatus body of the image forming apparatus as one of the components of the image forming apparatus, and at least one of the above-mentioned sheets is formed on the image-formed sheet sent from the apparatus body. It is designed to be processed.

The image forming apparatus is an apparatus for forming an image on a sheet. The image forming apparatus includes a copying machine, a printer, a facsimile and a composite machine of these.

For example, a sheet processing apparatus provided in a printer apparatus main body as a component of a printer aligns staples (stitching) by aligning respective end portions of a plurality of sheets on which image formation (printing) is performed by the printer main body. ), Etc., may be provided with a sheet discharging device for discharging after performing post-processing. Such a sheet processing apparatus is an apparatus for aligning a sheet bundle,
If there is a sheet handling error such as a jam in the printer body when binding a sheet bundle or discharging a sheet, the sheet bundle that is being processed at that point in time due to the difficulty in job recovery processing. Was discharged without post-processing, the job was interrupted, error recovery was performed, and the job was controlled to be restarted from the beginning.

[0006]

However, the conventional sheet processing apparatus has a problem in that productivity is impaired because the job is restarted from the beginning after error recovery. In addition, there is also a problem that the post-processing function provided in the discharging device in the sheet processing apparatus cannot be effectively utilized.

According to the present invention, when the conveyance state of the sheet becomes abnormal on the upstream side where the sheet is fed, the processing for the sheet that has been conveyed until then is changed so that the job after the abnormal state is released. An object of the present invention is to provide a sheet processing apparatus that can be smoothly restarted, and an image forming apparatus including the sheet processing apparatus in an apparatus body.

[0008]

In order to achieve the above object, a sheet processing apparatus of the present invention has a sheet processing means for processing a fed sheet and a stack of sheets processed by the sheet processing means. Processing sheet stacking means, sheet transporting means for transporting the sheets stacked on the processing sheet stacking means, and when the information indicating that the delivered sheet is in an abnormal state is received, the sheet is processed as the processing sheet. When the job is interrupted after being stacked on the stacking means and the job cancel information is received, the sheet conveying means is controlled to discharge the sheet stacked on the processing sheet stacking means without processing. When the continuation information is received, the sheet processing unit and the sheet conveying unit are controlled to process the sheets stacked on the processing sheet stacking unit, Comprises a control means for support Creating discharged, the.

In the sheet processing apparatus of the present invention, the job cancel information is a job cancel instruction.

In the sheet processing apparatus of the present invention, the job cancellation information is a sheet automatic discharge instruction.

In the sheet processing apparatus of the present invention, the job cancel information is a job end instruction.

In the sheet processing apparatus of the present invention, the job cancellation information is a next job start instruction.

In the sheet processing apparatus of the present invention, the job continuation information is a job continuation instruction.

In the sheet processing apparatus of the present invention, the job continuation information is page information without a job end instruction and a next job start instruction.

In order to achieve the above object, an image forming apparatus of the present invention comprises an image forming means for forming an image on a sheet, a sheet processing apparatus for processing the sheet on which the image is formed, and the sheet in an abnormal state. And a notification unit that sends information to the sheet processing apparatus when the sheet processing apparatus becomes the sheet processing apparatus, the sheet processing apparatus is one of the sheet processing apparatuses described above, and the information received by the control unit of the sheet processing apparatus is the notification. Information from the means.

To achieve the above object, the image forming apparatus of the present invention comprises an image forming means for forming an image on a sheet, a sheet processing means for processing the sheet on which the image is formed, and the sheet processing means. Processing sheet stacking means for stacking sheets to be processed; sheet conveying means for conveying the sheets stacked on the processing sheet stacking means; notification means for issuing information when the sheets are in an abnormal state; When the information indicating that the sheet is in an abnormal state is received from the notification unit, the sheet is stacked on the processing sheet stacking unit to interrupt the job, and when the job cancellation information is received, the sheet conveying unit is controlled, When the sheets stacked in the processing sheet stacking unit are discharged without being processed and the continuation information is received, the sheet processing unit and the sheet By controlling the conveying means, and control means for discharging the sheet subjected to a treatment to sheets stacked on the processing sheet stacking means.

In the sheet processing apparatus of the present invention, the job cancel information is a job cancel instruction.

In the image forming apparatus of the present invention, the job cancellation information is a sheet automatic discharge instruction.

In the image forming apparatus of the present invention, the job cancel information is a job end instruction.

In the image forming apparatus of the present invention, the job cancel information is a next job start instruction.

In the image forming apparatus of the present invention, the job continuation information is a job continuation instruction.

In the image forming apparatus of the present invention, the job continuation information is page information that is not accompanied by a job end instruction and a next job start instruction.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION A sheet processing apparatus according to an embodiment of the present invention and an image forming apparatus equipped with this sheet processing apparatus as one of constituent elements, for example, a printer represented by a laser beam printer, will be described based on the drawings. Explain.

In the sheet processing apparatus, for example, an aligning process for aligning ends of a sheet bundle, which is a sheet bundle, a stapling process for binding the sheet bundle, a punching process for punching a sheet or a sheet bundle, and a folding process for the sheet or sheet bundle. At least one of the bending processing and the like is performed.
The sheet post-processing of the present embodiment can perform stapling processing, but the present invention is not limited to this.

Further, the sheet processing apparatus is, for example, mounted on the apparatus body of the image forming apparatus as one of the constituent elements of the image forming apparatus, and the above-mentioned at least one sheet is formed on the image-formed sheet fed from the apparatus body. It is designed to be processed.

The image forming apparatus is an apparatus for forming an image on a sheet. The image forming apparatus includes a copying machine, a printer, a facsimile and a composite machine of these. The image forming apparatus of this embodiment is a printer, but is not limited to this.

(Printer) FIG. 1 shows a sheet processing apparatus 50.
FIG. 2 is a schematic cross-sectional view showing the overall configuration of a printer 101 provided with the device main body 100 as one of the components. Although the apparatus main body 51 of the sheet post-processing apparatus 50 and the apparatus main body 100 of the printer 101 of this embodiment are separate, they may be formed in a common housing. Further, the CPU 41 as the control means and the printer controller 21 as the notification means are separately provided in the apparatus main body 51 of the sheet post-processing apparatus 50 and the apparatus main body 100 of the printer 101, but both of them are provided. It may be provided in one of the device bodies. Further, although the CPU 41 and the printer controller 21 are formed separately, they are integrated to form the apparatus main body 51 of the sheet post-processing apparatus 50 and the printer 101.
It may be provided on either one of the apparatus main body 100.

In FIG. 1, the printer 101 includes a main body 1
00 is independently connected to a computer or connected to a network such as a LAN, and an image is formed on a sheet by a predetermined image forming process based on image information and print signals sent from these computers and networks. It is a device that forms (prints) and ejects the paper. The printer 101 may be provided with a reading unit for reading a document, and the image of the document may be copied onto a sheet and discharged based on the read information from the reading unit.

The sheet processing apparatus 50 includes the printer body 10
The sheets fed from 0 are width-aligned by the sheet aligning and stacking unit 6 to form a bundle, and then the sheets are discharged to the discharge sheet stacking tray 7, or the bundle of sheets is bound by the stapler 15. The sheet is discharged to the discharge sheet stacking tray 7.

That is, the sheet processing apparatus 50 places the sheet fed from the printer main body 100 on the sheet aligning and stacking section 6 in a face-down state with the image side facing down via the transport section, and rightward. And the left matching plates 6R and 6L (see FIG.
After aligning the sheets according to the reference) and bundling them for each predetermined job, one or more portions of the sheets are bound by a sheet processing unit such as a stapler 15 and discharged and stacked on the discharged sheet stacking tray 7. ing. Alternatively, the sheet processing apparatus 50 does not bind the bundle of sheets, but discharges them to the discharged sheet stacking tray 7 in a face-down state as they are. The sheet processing apparatus 50 and the printer body 100 are electrically connected by a cable connector (not shown).

Next, the configuration and operation of each part of the printer body 100 will be described along the transport path of the sheet S to be transported.

In the printer body 100, the feeding cassette 1
A plurality of sheets S are stacked in 04. A plurality of sheets are fed from the feeding cassette 104 one by one from the uppermost sheet by various rollers. Then, the paper S fed from the feeding cassette 104 is the printer body 1
In 00, a toner image is transferred to the upper surface in, for example, an image forming unit 102 which is an image forming unit that forms a toner image by a so-called laser beam type image forming process by a predetermined print signal supplied from a computer or a network. It Note that when the paper is fed to the image forming unit 102, the image forming unit 102
A toner image has already been formed on the photosensitive drum 103 by the toner in the cartridge 105.

The sheet is subsequently subjected to heat and pressure by the fixing device 106 on the downstream side to permanently fix the toner image. The sheet on which the image is fixed is placed on a face-down (FD) discharge section 108 provided on the upper part of the printer body 100 depending on the position of the flapper 107 of the printer body 100 that is switched based on a control signal from a control unit (not shown). It is selected whether the sheet is discharged or discharged to the discharged sheet stacking tray 7 of the sheet processing apparatus 50.

As shown in FIG. 1, when the flapper 107 is switched to the position indicated by the broken line, the sheet is guided by the flapper 107 and is conveyed in a substantially U shape until it reaches the discharge roller pair 109. The paper is folded back on the road, and is discharged facedown from the printer body 100 to the facedown discharge unit 108 by the discharge roller pair 109 with the image surface facing downward.

When the printer 101 performs stapling processing based on a command output in advance from a computer or the like, the paper S to be stapled is the sheet processing device 50.
Before being fed to the stopper 11, the flapper 107 is rotated counterclockwise from the position shown by the broken line in FIG. 1 by a solenoid (not shown) via a link (not shown).
The sheet is conveyed to the sheet processing apparatus 50 by abutting 0 and stopping at the position indicated by the solid line.

(Sheet Processing Apparatus) In FIGS. 1 to 6, an entrance sensor 1 is a sensor for detecting a sheet carried in from a printer. The pair of transport rollers 2 is configured to transport the paper loaded from the printer.
The intermediate roller pair 3 is configured to convey the sheet to a processing sheet stacking unit such as an alignment stage 4. The bundle discharge roller pair 5 including an upper bundle discharge roller 5U and a lower bundle discharge roller 5L is configured to discharge the sheets to the discharged sheet stacking tray 7 by selecting a separation and a nip. The upper bundle discharge roller 5U is rotatably provided at the tip of a tilting link 42 that is tiltably provided on a shaft 44. Tilting link 42
Is urged to rotate in one direction by a spring 43.
The upper bundle discharge roller 5U is pressed against the lower bundle discharge roller 5L by a spring 43. The conveying roller pair 2, the intermediate roller pair 3, and the bundle discharging roller pair 5, which is a sheet conveying means, are rotated by the conveying motor M1.

The nip position and the separation position of the bundle discharge roller pair 5 are positioned by a cam (not shown) driven by the separation motor M3. A position sensor flag is connected to this cam. The position at which the bundle discharge roller home position sensor (described as “bundle discharge roller HP sensor” in FIG. 6) 11 whose position sensor flag is a photo sensor is shielded from light is the separated position of the bundle discharge roller pair 5, and the transparent position. The illuminated position is the nip position.

The sheet stacking alignment section 6 aligns the sheet bundle in the lateral direction (width direction) and is positioned by an alignment motor (stepping motor) M4. As shown in FIG. 4, when the sheet stacking alignment unit 6 is viewed from the downstream side to the upstream side in the sheet conveyance direction,
It is composed of a left aligning plate 6L that holds down the left side of the sheet and a right aligning plate 6R that holds down the right side of the sheet.
It moves to any of the standby position B, the alignment position C, and the loose alignment position Ca. Alignment plate home position sensor for detecting that the left alignment plate 6L is retracted at the retracted position A (in FIG. 6, described as “alignment plate HP sensor”) 1
2 are provided. However, the alignment position C and the standby position B of the right alignment plate 6R are the same position. Therefore, the right alignment plate 6
R has a mechanism that does not move inward from the standby position B, and the sheet stacking aligning unit 6 performs the aligning operation only by the left aligning plate 6L according to the size when aligning the width of the sheets. ing.

The discharge sheet stacking tray 7 can stack sheets. The paddle 8 is rotated clockwise by the paddle motor M2 in FIG. 2 to pull back the paper that has jumped out of the alignment stage 4 to the upstream side.
The sheet is conveyed by aligning it with the stopper 22 shown in FIG. The position of the paddle 8 is detected by a paddle home position sensor (described as “paddle HP sensor” in FIG. 6) 19. Therefore, the paddle home position sensor 19 is used to control the rotation of the paddle motor M2.

The stamp 9 presses the aligned sheet bundle against the alignment stage 4 by a plunger type stamp solenoid SL. That is, the stamp 9 separates from the sheet bundle when the stamp solenoid SL is turned on, and the sheet bundle is aligned when the stamp solenoid SL is turned off.
It is designed to be pressed against.

The full load detection sensor flag 10 is located above the upper bundle discharge rollers 5U, and when the bundle discharge roller pair 5 is in a nipping state, the sheets on the discharged sheet stack tray 7 are at the full height. Then, the full load detection sensor 13 is shielded from light. The full load detection sensor flag 10 is arranged so as not to detect the full load when the bundle discharge roller pair 5 is separated from each other. Further, as shown in FIG. 5, the full-load detection sensor flag 10 faces not only the central portion of the sheet bundle but also both end portions thereof so that the rising of the sheet bundle at the staple position can be detected correctly. Therefore,
As shown in FIG. 5, it can be seen that the operation range of the sheet stacking alignment unit 6 and the operation range of the full load detection sensor flag 10 interfere with each other.

As shown in FIG. 4, the stapler 15 drives the stapler motor M5 to obliquely perform stapling on the right rear side of the bundle of sheets aligned on the aligning stage 4. Stapler home position sensor 16
Detects whether or not the stapler 15 has opened its mouth and is in an initial state in which a bundle of sheets can be bound. The staple presence / absence sensor 17 is configured to perform a staple-less advance notice detection on the stapler 15.

The sheet bundle presence / absence detection sensor 18 is used to determine whether or not the bundle of sheets after stapling and stacking on the alignment stage 4 have been correctly carried out.

The CPU 41 shown in FIG. 6 includes a ROM and a RAM.
It is a built-in one-chip microcomputer. The CPU 41 receives detection signals from the respective sensors 1, 11, 12, 13, 16, 17, 18, 19 via the sensor input circuits 37, 36, and based on the detection signals, the drivers 31, 32,
Control signals are sent to the motors 33, 34, and 35 to drive the motors M1, M
2, M3, M4, M5 are controlled. Further, the CPU 41 sends and receives control information, paper status information, printer status information, and the like to the motors M1, M2, M3, M by serial communication with the printer controller 21.
4 and M5 are controlled.

The control operation of the sheet processing apparatus according to this embodiment will be described below with reference to the sheet processing apparatus shown in FIGS. 1 to 5 and the control block diagram shown in FIG.

(Paper Conveyance Management Processing) Before the paper is carried into the sheet processing apparatus from the printer, the printer controller 21 sends job information and page information of the paper to be carried into the CPU 41 by communication. Post-processing information for the job is added to the job information. The sheet processing apparatus according to the present invention has a simple stacking function without post-processing and a stapling function. From the printer controller 21, a designation indicating which one of the functions is to be operated is sent as job information.

The page information is composed of a page ID, a descriptor and a paper size. The page ID is a unique number assigned to each page. The descriptor is information indicating the position of the paper in the job. SOJ (Start of JOB, job start) is on the first page of the job, and EOJ (Endo is on the last page of the job.
f JOB, job end) is added.

Upon receiving the job information and page information from the printer controller 21, the CPU 41 stores these information and sends the required paper interval time to the printer controller 21. The required paper interval time is usually 0 seconds.
However, in the case of the stapling process and the like, a predetermined stapling operation time has to be opened, so that the required paper interval time is longer than the normal required paper interval time. The printer controller 21, which has received the required paper interval time, delays the start of printing for the page by the specified time to open the paper interval.

After that, the CPU 41 waits for the advance notice command from the printer controller 21. The advance notice command is
The sheet is sent from the printer controller 21 immediately before the sheet is carried into the sheet processing apparatus. The CPU 41, which has received the carry-in advance notice command, executes a paper discharge process.

FIG. 7 is a flow chart showing the paper transport management process. This process is executed in a predetermined short cycle.

First, the CPU 41 determines whether the error flag is set (S1000). If the error flag is set, the job should be interrupted for some reason. , And proceeds to the processing of S1010 without performing the acquisition processing of page information. If the error flag is not set, the CPU 41 determines whether job information has been received (S100
1) If the job information is received, it is stored (S1002). Further, the CPU 41 determines whether or not the page information has been received (S1003), and if it has received the page information, the received page information is additionally registered in the transport management table (not shown) (S1004). The transport management table is a ring buffer that can register page information for four pages.

The page information of the transport management table is shown in FIG.
As shown in, in addition to the page information received from the printer controller 21, in S1001, the stored 1-bit job information and 2-bit transport information indicating the transport status are added. In FIG. 8, if the transport information is 00B, the CPU 41 only receives the page information and does not receive the carry-in advance notice command. If the carrying information is 01B, it indicates that the paper carrying operation is being performed. If the carrying information is 10B, it means that the carrying is completed. If the conveyance information is 11B, it indicates that an error has occurred during the conveyance of the paper.

The CPU 41 is the printer controller 21.
(10)
05), if received, retrieves the oldest registered transport information (1006) and adds 01B to the transport information.
Set. At the same time, the CPU 41 checks whether the job information of the page information is a simple stacking job or a staple job (1007), and if it is a simple stacking job, activates the simple stacking and conveying processing task (S1008). ), If it is a staple job, the staple conveyance processing task is activated (S1009). The address of this page information is passed to these tasks, and each task also carries out the carrying process based on this page information.

Then, the CPU 41 searches the carrying management table and picks up the carrying information of 10B (S1010). The CPU 41 indicates that the transport information is 10
When the page information of B is found, the printer controller 21 is notified of the conveyance end together with the page ID (S1011). Further, the CPU 41 confirms the descriptor of the page information (S1012), and if EOJ is added, notifies the printer controller 21 of the end of the job (S1013). And
The CPU 41 deletes this page information from the transport management table (S1014). If there is no conveyance information of 10B in S1010, the next process is performed (S101).
5).

Further, the CPU 41 searches the transportation management table and picks up the transportation information of 11B (S1015). Since the conveyance information of 11B indicates that a conveyance error has occurred, the CPU 41 performs a sheet conveyance stop process (S1016). In the paper transport stop process,
The CPU 41 performs stop / delete of all transport tasks, stop of all drive systems such as motors, notification of error information to the printer controller 21, deletion of transport information, and the like.

(Paper Conveyance Processing) Next, the staple conveyance processing operation of the sheet processing apparatus will be described based on the flowchart shown in FIG.

First, the CPU 41 starts the timer in the CPU 41 (S1301). Next, CPU4
1 gives an instruction to start driving the carry motor M1 shown in FIGS. 2 and 6 to the carry motor driver 31 shown in FIG. 6 (S
1302), referring to the descriptor of page information, it is determined whether or not the paper is SOJ (S1303). If the sheet is SOJ, it is the first page of the job, so C
The PU 41 operates from (S1304) to (S1) described below.
The processing of 312) is performed.

First, the CPU 41 gives an instruction to start driving the separation motor M3 shown in FIGS. 2 and 6 to the separation motor driver 33 shown in FIG. 6 to start the separation motor M3. The bundle discharge roller pair 5 is separated as shown in FIG. 2 from the state where it was nipped in the initialization processing (S1304). C
The PU 41 waits for a predetermined time to wait for the separation operation to be completed (S1305), and then stops the separation motor M3 (S1306). Then, the CPU 41 is
The alignment motor driver 34 shown in FIG. 6 is instructed to start driving the alignment motor M4 to start the alignment motor M4. The alignment motor M4 is started and the alignment plate 6 is moved to the position shown in FIG.
It is moved to the standby position B shown in (S1307). (S
1304), the bundle discharge roller pair 5 is once separated from
Align the alignment plate 6 to the standby position B without separating the bundle discharge roller pair 5.
This is because the full-load detection sensor flag 10 which is moved to the retracted position by the upper bundle discharge roller 5U is pressed by the aligning plate 6 to hinder the conveyance of the sheet when the sheet is moved to the retracted position as shown in FIG.

The CPU 41 waits for completion of the movement of the aligning plate 6 to the standby position B for a predetermined time (S1308), and then
The alignment motor M4 is stopped (S1309), and the separation motor M3 is driven to re-nip the separated bundle discharge roller pair 5 (S1310). And the CPU 41
Is waiting for the completion of the nip operation, so after waiting for a predetermined time (S1311), the separation motor M shown in FIGS.
3 is stopped (S1312).

The CPU 41 confirms whether or not the entrance sensor 1 is operating, and confirms whether or not the sheet has been carried into the sheet processing apparatus (S1313). If the sheet has not been carried into the entrance sensor 1 (S1314), the timer value is checked, and if a predetermined time or more has elapsed, it is determined to be a delay jam, and the jam processing is performed (S1326). If it is within the predetermined time, the process returns to (S1313).

When the sheet is detected in (S1313), the CPU 41 confirms whether or not the entrance sensor 1 has the trailing edge of the sheet (S1315). CPU 41 is the entrance sensor 1
Does not confirm the trailing edge of the sheet, the timer value is confirmed (S1316), and if a predetermined time or more set for each sheet size has elapsed, it is determined as a jammed jam and jam processing is performed (S1327). ). If within a predetermined time (S
The processing returns to 1315). At this point, the first sheet (SO
The leading edge of the sheet J) is carried into the alignment plate 6 while being nipped by the bundle discharge roller pair 5.

When detecting the trailing edge of the sheet (S1315), the CPU 41 resets the timer counter and newly counts the timer (S1317). CPU41
Thereafter, again referring to the page information descriptor shown in FIG. 8 (S1318), it is determined whether or not it is an SOJ. If it is SOJ, the bundle discharge roller pair 5 is separated (S1319). ), And drives the separation motor M3. Then, the CPU 41 waits for a predetermined time to wait for the completion of the separation operation (S1320), and then stops the separation motor M3 (S1321).

In the staple conveyance, sheets are successively stacked on the alignment stage 4 and the alignment operation is performed. At this time, when the bundle discharge roller pair 5 is nipped, the transport motor M1 is driven, The paper is ejected from the alignment stage 4. In order to prevent this, the bundle discharge roller pair 5 is separated.

However, only the first sheet of the job is pinched by the bundle discharge roller pair 5. The reason will be described with reference to FIG. The paper carried in from the printer is curled because it is heated and pressed when passing through the thermal fixing device. Therefore, when the sheet is conveyed while the bundle discharge roller pair 5 is separated, the sheet comes out of the conveyance path gap G between the bundle discharge roller pair 5 and the entrance 6a of the alignment plate 6, and the alignment plate 6 moves. May sneak into the bottom.

Therefore, as shown in FIG. 5, the upper bundle discharge upper roller 5U and the lower bundle discharge lower roller 5L of the bundle discharge roller pair 5 are alternately assembled so that the sheets are corrugated when they are conveyed. Then, a strong stiffness is generated in the sheet, and the sheet is conveyed in a straight state as shown in FIG. In this way, the first sheet is nipped by the bundle discharge roller pair 5 and conveyed in a straight state.
For the second and subsequent sheets, the first sheet is the lower bundle discharge roller 5
Even when the bundle discharge roller pair 5 is separated from each other, it serves as a bridge between L and the alignment plate 6, and is smoothly conveyed to the alignment plate 6 and stacked on the alignment stage 4.

The CPU 41 waits for a predetermined time until the sheets are stacked on the alignment stage 4 (S1322), and gives a stop instruction of the carry motor M1 to the carry motor driver 31 (S1323). Then, the CPU 41 sets 10B to the carrying information of the page information given from the carrying management process, and finishes the carrying process (S1324).

Further, the CPU 41 activates the aligning process task with the address of the page information in order to perform the aligning operation, and ends the staple carrying process (S132).
5). In the jam processing of (S1327), 11B is set in the conveyance information of the given page information, each jam type is set in the error information area (not shown),
The carrying process ends.

(Alignment Processing) FIGS. 13 and 14 are flowcharts showing the alignment processing. FIG. 15 is a timing chart of the matching process. First, the CPU 140 sets the CP
Start the timer in U140 (S150
1), the stamp solenoid SL shown in FIG. 2 is activated (S1502), and the matching motor M4 is also driven (S150).
3), the aligning plate 6 shown in FIG. 4 is moved from the standby position B, which has been moved in S1309, to the aligning position C.

Normally, as shown in FIG. 2, the alignment motor M4 is driven after the stamp 9 is completely separated from the paper (S
1503), the sheet processing apparatus according to the present embodiment includes the matching plate 6
Since the time required for the stamp 9 to complete the separation from the paper is sufficiently shorter than the time required to complete the movement from the retracted position A to the alignment position C, the stamp solenoid SL and the alignment motor M4 are
Even if they are driven at the same time, the width of the sheet is not aligned by the aligning plate 6 while the sheet is pressed against the aligning stage 4 by the stamp 9. If the stamp 9 and the aligned sheet interfere with each other, the stamp solenoid drive processing (S1502) and the alignment motor drive processing (S15).
03), a delay time may be provided for adjustment.

The CPU 41 checks the timer (S1
504), the paddle motor M2 is started to wait for a predetermined time and rotate the paddle 8 (S150).
5). Next, the CPU 41 waits for a predetermined time for the aligning plate 6 to reach the aligning position C (S1506),
The matching motor M4 is held (S1507). Then, the CPU 41 waits for a further predetermined time (S1
508) and reverse the matching motor M4 (S1509),
The aligning plate 6 is moved from the aligning position C to the loose aligning position Ca slightly opened. After that, the CPU 41 waits for a predetermined time (S1510) and holds the alignment motor M4 (S1511). In the hold processing of the matching motor M4, the same excitation pattern is periodically sent to the stepping motor to fix the motor rotor.

At this point, in the processing of (S1505), the tip of the paddle 8 rotated by the paddle motor M2 lands on the paper on the alignment stage 4, and the paper that has jumped out of the alignment stage 4 remains on the upstream side. Back to
The upstream end of the sheet is brought into contact with the stopper 22 shown in FIG.
As a result, after the stamp 9 is separated from the paper surface,
The alignment plate 6 performs the horizontal alignment, and when the horizontal alignment is completed, the alignment plate 6 is slightly opened, and the paddle 8 performs the vertical alignment. The reason why the alignment plate 6 is opened during vertical alignment by the paddle 8 is to prevent the paper from being pulled back due to the frictional force between the alignment plate 6 and the paper.

After waiting for a predetermined time until the paddle 8 separates the paper surface (S1512), the CPU 41 stops the driving of the stamp solenoid SL in order to press the aligned paper on the alignment stage 4 with the stamp 9 (S15).
13). The stamp 9 presses the aligned bundle so that even if the curled next sheet is carried onto the alignment stage 4, the uppermost sheet of the aligned sheet bundle is not pushed out by the next sheet. There is. Then, the CPU 41
The held alignment motor M4 is further rotated in the reverse direction (S1514), and the left alignment plate 6L is returned to the standby position B (S1515, S1516).

In the series of these processes, the next operation may be performed after completing each operation. However, when the printer becomes high speed and the sheet interval cannot be sufficiently secured, the series of these processes is performed in a short time. Processing must be done. Therefore,
The paper discharge processing apparatus according to the present embodiment has a stamp SL driving process (S1502) and a matching motor driving process (S1503).
Paddle motor drive processing (S1505), alignment motor hold processing (S1507), alignment motor reverse rotation drive processing (S
1509), the matching process is completed in the shortest time in consideration of the operation time.

The CPU 41 waits for a predetermined time until the paddle 8 returns to the original home position state, and then waits for all matching operations to end (S1517, S15).
18). Then, the CPU 41 refers to the descriptor of the page information shown in FIG.
It is determined whether or not it is OJ (S1519), and if it is not EOJ, this matching process is completed. If it is EOJ, in order to perform the stapling process, the address of the page information is attached, the stapling process task is activated (S1520), and this aligning operation is ended.

(Stapling Process) FIGS. 16 to 19 show
6 is a flowchart showing a stapling process. First, C
The PU 41 starts a timer in the CPU 41 (S1701). Then, the CPU 41 drives the stamp solenoid SL to separate the stamp 9 from the paper (S1702), and starts the alignment motor M4 (S170).
3) The alignment plate 6 is moved to the alignment position C. CPU4
1 waits for a predetermined time to complete the movement of the alignment plate (S1704), and holds the alignment motor M4 (S1705). Then, the CPU 41 stops driving the stamp solenoid SL and presses the stamp 9 onto the sheet bundle (S1706).

The CPU 41 refers to the page information descriptor shown in FIG. 8 (S1707), and returns SOJ + E.
If it is OJ, that is, whether it is a single-sheet staple, if it is SOJ + EOJ, the separation motor driving process is performed without performing the staple (see FIG. 18, S1725).
If it is not one-sheet stapling, then the CPU 41 refers to the error information (S1708), and determines whether or not there is any error that does not hinder the completion of the job but does not hinder the sheet conveyance. If an error has occurred, stapling is not performed, and therefore the separation motor drive processing is performed (FIG. 18).
See S1725). If no error occurred, C
Since the PU 41 binds (staples) a bundle of paper,
The stapler motor M5 shown in FIGS. 4 and 6 is driven (S1709). After waiting for a predetermined time (S1710), the CPU 41 confirms with the stapler home position sensor 16 whether or not the stapler 15 has returned to the home position state in which the mouth is open (S1).
711). If the stapler 15 can be confirmed by the stapler home position sensor 16, the stapling is completed. Stapler home position sensor 1
If the stapler 15 cannot be detected by 6, the CPU
41 confirms whether the predetermined time is exceeded (S
1712), if not over (S1711)
Return to processing.

When the CPU 41 determines in (S1712) that the predetermined time has been exceeded, it stops the stapler motor M5 (S1713), waits for a further predetermined time (S1714), and reverses the stapler motor M5. Drive (S1715). The CPU 41 again detects and confirms whether or not the stapler 15 has returned to the home position state (S1716). If the stapler 15 has not returned to the home position,
The CPU 41 confirms whether the predetermined time is exceeded (S1717), and if not, (S1717).
The processing of 16) is performed. If the specified time is exceeded, C
The PU 41 stops the stapler motor M5 (S17
18), and waits for a predetermined time (S171).
9), drive the stapler motor M5 in the reverse direction (S
1720).

Then, the CPU 41 confirms with the stapler home position sensor 16 whether the stapler 15 has returned to the home position state (S172).
1). If the CPU 41 cannot detect the return to the home position state, it checks whether the predetermined time has passed (S1722), and if not, performs the process of (S1721).

When the predetermined time is exceeded (S172
2), the CPU 41 determines that the stapler motor M5 has failed, and performs a failure process (S1723). CPU41
When it is detected that the stapler 15 has returned to the home position state in (S1716) and (S1721), it is determined that a stapler needle jam has occurred,
Needle jam processing is performed (S1724).

When the CPU 41 detects that the stapler 15 has returned to the home position state in (S1711), it determines that the stapling operation is normally completed, and drives the separation motor M3 (S1725). ,
After waiting for the completion of the bundle discharge roller nip for a predetermined time (S1726), the stamp solenoid SL is driven again (S1727), and then the conveyance motor M1 is driven (S1728), and the bundle discharge roller pair 5 is stapled. Start the discharge operation of the bundle.

Then, the CPU 41 waits for a predetermined time (S1729) and drives the alignment motor M4 in the reverse direction (S).
1730) and the movement of the alignment plate 6 to the retracted position A is started. The CPU 41 waits for completion of the movement of the alignment plate 6 to the retracted position A by waiting for a predetermined time (S173).
1) The alignment motor M4 is stopped (S1732). After that, the CPU 41 causes the sheet bundle discharge sensor 18 shown in FIGS.
To check whether the stack of paper has been discharged (S173
3). When the time is over (S1734), bundle eject jam processing is performed (S1735).

When the CPU 41 detects the completion of bundle discharge (S1733), it stops the carry motor M1 (S173).
6) Stop driving the stamp solenoid SL (S17
37) and notifies the printer controller 21 of the end of the job (S1738).

Further, the CPU 41 sets the staple full load detection flag to perform the full load detection process during stapling (S1739), waits for a predetermined detection time (S1740), and then resets the staple full load detection flag (S1741). ).

With the above, a series of processing from sheet conveyance to stapling is completed.

(Operation of Sheet Processing Apparatus when Jam Occurs in Printer) Next, various controls of the sheet processing apparatus when a jam occurs in the printer while processing one job will be described with reference to FIG. It will be described with reference to the sheet processing apparatus shown in FIG. 5 and the control block diagram of FIG.

(First Control Mode) FIG. 20 shows the printer controller 21 and the CPU 41 in the first control mode.
It is a figure showing information exchange of. When a jam occurs in the printer body 100 of the printer 101, the printer body 1
00 stops the conveyance of the paper. At the same time, the printer controller 21 that collects this information sets the C
An emergency stop instruction is transmitted to the PU 41 (emergency stop instruction).
Even if the sheet processing apparatus receives this emergency stop instruction,
The sheet being conveyed is conveyed to a predetermined position, that is, the alignment stage 4. This processing does not perform special error processing, and only needs to perform the above-described transport processing shown in FIGS. 9 and 10 (transport completion). After that, the CPU 41 simply stores the emergency stop instruction. When the conveyance of the sheet being conveyed is completed, the CPU 41 sets an error flag indicating that an error has occurred.

After the occurrence of the jam, the printer controller 21 judges whether the interrupted job can be continued or has to be canceled, and gives the next instruction to the sheet processing apparatus.

When canceling the job, the printer controller 21 clears all the page information for which the advance notice of delivery has not been issued with the information already registered in the sheet processing apparatus. A clear instruction is issued to the CPU 41 (page information all clear instruction).

In response to this, the sheet processing apparatus receives the CPU 4
Clear all page information registered in 1 (page information all clear completed). At this point, a bundle of sheets that has not been processed (stapled) is stacked on the alignment stage 4. Next, the printer controller 21 sends a job cancel instruction to the sheet processing apparatus (job cancel instruction). In response to the job cancel instruction, the sheet processing apparatus discharges the bundle of sheets stacked on the alignment stage 4 to the discharged sheet stacking tray 7 without stapling (job completion). This paper discharge process is shown in FIGS.
Since it is the same as the processing from (S1725) shown in FIG. 9, description thereof will be omitted. Then, the printer controller 21
In order to reconstruct the job, the paper information is transmitted to the CPU 41 (page information (SOJ)).

By the control as described above, the interrupted job can be canceled after the jam occurs. Therefore, the sheet processing apparatus, even if an error occurs with respect to the paper on the printer body side for some reason, cancels the job and eliminates the waste of the paper, thereby improving the productivity and the usability by the subsequent recovery action. be able to.

(Second Control Mode) FIG. 21 shows a printer controller 21 and a CPU 41 in the second control mode.
It is a figure showing information exchange of. In FIG. 21, the control based on the emergency stop instruction and the control on the completion of conveyance are the same as the control based on the emergency stop instruction and the control on the completion of conveyance shown in FIG.

After the occurrence of the jam, the printer controller 21 determines whether the interrupted job can be continued or must be canceled. For example, there is a case where paper remains in the printer. If the operator tries to automatically remove the residual paper left in the printer after the jam processing, the printer controller 21 cannot determine whether this paper should be added to a part of the job or should be removed. .

Therefore, the printer controller 21
In the case of the automatic paper discharge instruction, it is uniquely determined that the job is canceled. The printer controller 21 transmits an automatic paper ejection instruction to the sheet processing apparatus (automatic paper ejection instruction). Then, the printer controller 21 issues an instruction to clear all the page information to the CPU 41 of the sheet processing apparatus in order to clear all the page information for which the advance notice has not been issued with the information already registered in the sheet processing apparatus. (Page information all clear instruction).

When the sheet processing apparatus receives the automatic paper discharge instruction, the sheet processing apparatus performs the same processing as the processing from (S1725) shown in FIGS. 18 and 19 and does not staple the sheet bundle stacked on the alignment stage 4. The sheet bundle is discharged by, and the sheet bundle is stacked on the discharged sheet stacking tray 7 (job completion).
Then, the sheet processing apparatus receives the page information all clear instruction and clears all the registered page information (completion of page information all clear). Then, the printer controller 21 transmits the paper information to the CPU 41 in order to reconstruct the job (page information (SO
J)).

With the control as described above, the interrupted job can be canceled after the jam occurs. Therefore, the sheet processing apparatus, even if an error occurs with respect to the paper on the printer body side for some reason, cancels the job and eliminates the waste of the paper, thereby improving the productivity and the usability by the subsequent recovery action. be able to.

(Third Control Mode) FIG. 22 shows the printer controller 21 and the CPU 41 in the third control mode.
It is a figure showing information exchange of. In FIG. 22, the control based on the emergency stop instruction and the control of the completion of conveyance are the same as the control based on the emergency stop instruction and the control of the completion of conveyance shown in FIG. 20, and thus the description thereof will be omitted.

After the occurrence of the jam, the printer controller 21 determines whether the interrupted job can be continued or has to be canceled, and gives the next instruction to the sheet processing apparatus.

When canceling the job, the printer controller 21 issues a page information all clear instruction in order to clear all page information for which the advance notice of delivery has not been issued with the information already registered in the sheet processing apparatus (page Information all clear instruction).

Upon receipt of this, the sheet processing apparatus clears all registered page information (completion of page information all clear). At this time, a sheet bundle that has not been subjected to post-processing is loaded on the alignment stage 4 in the sheet processing apparatus. Next, the printer controller 21
Issues an asynchronous job end instruction (EOJ) to the sheet processing apparatus (asynchronous EOJ instruction). In some cases, depending on the application software on the host computer, the printer controller 21 cannot recognize the last page of the job and can determine the job end only by the print request end instruction from the application software. The asynchronous job end instruction (EOJ) is set in response to such a print request.

In response to this, the sheet processing apparatus tries to staple the bundle of sheets stacked on the alignment stage 4, but since the printer controller 21 receives an emergency stop instruction and sets an error flag, The bundle is discharged without stapling, and the sheet bundle is stacked on the discharged sheet stacking tray 7 (job completion). This paper discharge process is the same as the process from (S1725) shown in FIG. Then, the printer controller 21 transmits the paper information to the CPU 41 to reconstruct the job (page information (SOJ)).

By the control as described above, the interrupted job can be canceled after the jam occurs. Therefore, the sheet processing apparatus, even if an error occurs with respect to the paper on the printer body side for some reason, cancels the job and eliminates the waste of the paper, thereby improving the productivity and the usability by the subsequent recovery action. be able to.

(Fourth Control Mode) FIG. 23 shows the printer controller 21 and the CPU 41 in the fourth control mode.
It is a figure showing information exchange of. In FIG. 23, the control based on the emergency stop instruction and the control of the completion of conveyance are the same as the control based on the emergency stop instruction and the control of the completion of conveyance shown in FIG. 20, and therefore the description thereof will be omitted.

After the occurrence of the jam, the printer controller 21 determines whether the interrupted job can be continued or has to be canceled, and gives the next instruction to the sheet processing apparatus.

When canceling the job, the printer controller 21 issues a page information all clear instruction to the CPU 41 in order to clear all the page information for which the advance notice has not been issued with the information already registered in the sheet processing apparatus. (Page information all clear instruction).

In response to this, the sheet processing apparatus receives the CPU 4
Clear all page information registered in 1 (page information all clear completed). At this point, a sheet bundle that has not been subjected to post-processing is stacked on the alignment stage 4 in the sheet processing apparatus. Next, the printer controller 21 reconstructs the job information for printing the same job again, and indicates to the sheet processing apparatus S the job start.
Send page information with OJ (page information (SO
J)). In response to this, the sheet processing apparatus first transmits the required paper interval time to the printer controller 21. This paper interval time for normal page information is 0 seconds, but in this case, the time required to discharge the paper bundle to the discharge sheet stacking tray 7 without stapling the paper stack stacked on the alignment stage 4 ( Post-processing time) is transmitted (post-processing time notification). 18 and 19 (S172).
Bundle discharge is executed by the same processing as the processing from 5).

Since the printer controller 21 suppresses the printing operation in accordance with the required paper interval time for the page information from the sheet processing apparatus, the first page is carried in after the sheet processing apparatus completes the bundle discharge operation ( Carry-in notice).

By the control as described above, the interrupted job can be canceled after the jam occurs. Therefore, the sheet processing apparatus, even if an error occurs with respect to the paper on the printer body side for some reason, cancels the job and eliminates the waste of the paper, thereby improving the productivity and the usability by the subsequent recovery action. be able to.

(Fifth Control Mode) FIG. 24 shows the printer controller 21 and the CPU 41 in the fifth control mode.
It is a figure showing information exchange of. In FIG. 24, the control based on the emergency stop instruction and the control of the completion of conveyance are the same as the control based on the emergency stop instruction and the control of the completion of conveyance shown in FIG. 20, and therefore the description thereof will be omitted.

When the printer controller 21 determines that the interrupted job can be continued after the occurrence of the jam, it gives the following instruction to the sheet processing apparatus.

First, the printer controller 21 issues a job continuation instruction to the sheet processing apparatus (job continuation instruction).

In response to this, the sheet processing apparatus resets the error flag set by the emergency stop instruction.
With this process, the job can be correctly continued (can be continued) in the determination process of (S1000) in FIG. 7, and the stapling process can be performed by EOJ.

By the control as described above, the interrupted job can be continued after the jam occurs. Therefore, even if an error occurs in the sheet due to some reason on the printer body side, the sheet processing apparatus continues the job and eliminates the waste of the sheet, thereby improving the productivity and the usability, even if an error occurs with respect to the sheet. be able to.

(Sixth Control Mode) FIG. 25 shows the printer controller 21 and the CPU 41 in the sixth control mode.
It is a figure showing information exchange of. In FIG. 25, the control based on the emergency stop instruction and the control of the completion of conveyance are the same as the control based on the emergency stop instruction and the control of the completion of conveyance shown in FIG. 20, and therefore the description thereof will be omitted.

In the fifth control mode, the printer controller 21 sends a job continuation instruction to the sheet processing apparatus in order to continue the job. However, even if this command is not issued, the sheet processing apparatus still operates as the printer controller 21. By determining the descriptor of the page information sent from, it is possible to determine whether the job is continued or stopped.

When the printer controller 21 determines that the interrupted job can be continued after the jam occurs, the EO
Page information having a descriptor to which neither J nor SOJ is added is transmitted to the sheet processing apparatus (page information of the next page).

In response to this, the sheet processing apparatus resets the error flag set by the emergency stop instruction.
By this process, the job can be correctly continued (can be continued) in the determination of (S1000) in FIG. 7, and the stapling process can be performed by EOJ.

With the control as described above, the interrupted job can be continued after the jam occurs. Therefore, even if an error occurs in the sheet due to some reason on the printer body side, the sheet processing apparatus continues the job and eliminates the waste of the sheet, thereby improving the productivity and the usability, even if an error occurs with respect to the sheet. be able to.

[0118]

According to the sheet processing apparatus of the present invention, even if an error occurs in the upstream apparatus due to some reason, the job can be stopped or restarted by the subsequent recovery procedure. Wasteful deletion, productivity improvement, and usability improvement.

Since the image forming apparatus of the present invention is equipped with the sheet processing apparatus with the waste paper deletion, the productivity improvement, and the usability improvement, the paper waste deletion, the productivity improvement, and the usability improvement can be performed. .

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a printer, which is an image forming apparatus including a sheet processing apparatus according to an embodiment of the present invention, which is an image forming apparatus, taken along a conveyance direction of a sheet that is a sheet.

FIG. 2 is a schematic cross-sectional view of the sheet processing apparatus shown in FIG. 1, taken along the sheet conveyance direction.

FIG. 3 is a diagram illustrating a state in which a full-sheet detection sensor flag that is moved to a retracted position by an upper-bundle discharge roller is pressed by an alignment plate to prevent the sheet from being conveyed in the sheet processing apparatus illustrated in FIG. .

FIG. 4 is a plan view of a main part of the sheet processing apparatus.

FIG. 5 is a diagram of FIG. 4 viewed from the right side (the sheet is on the downstream side in the transport direction).

FIG. 6 is a control block diagram of the sheet processing apparatus.

FIG. 7 is a flowchart showing a paper transport management process.

FIG. 8 is a diagram showing control information for sheet conveyance of the sheet processing apparatus.

FIG. 9 is a flow chart for explaining the staple transport processing operation of the sheet processing apparatus.

FIG. 10 is a flowchart diagram that follows FIG. 9;

FIG. 11 is a diagram for explaining a problem that occurs when the first sheet of a job is conveyed to the alignment plate in the sheet processing apparatus.

FIG. 12 is a diagram for explaining a state when the first sheet of a job is conveyed straight to an alignment plate in the sheet processing apparatus.

FIG. 13 is a flowchart for aligning sheets in the sheet processing apparatus.

FIG. 14 is a continuation of the flowchart of FIG. 13;

FIG. 15 is a timing chart of alignment processing in the sheet processing apparatus.

FIG. 16 is a flowchart of a stapling process in the sheet processing apparatus.

FIG. 17 is a flowchart diagram continued from FIG. 16;

FIG. 18 is a flowchart diagram continued from FIG. 16;

FIG. 19 is a flowchart diagram continued from FIG. 18;

FIG. 20 is a diagram illustrating a first control mode of the sheet processing apparatus,
It is a command chart figure of a printer controller and CPU.

FIG. 21 is a second control mode of the sheet processing apparatus,
It is a command chart figure of a printer controller and CPU.

FIG. 22 is a third control mode of the sheet processing apparatus,
It is a command chart figure of a printer controller and CPU.

FIG. 23 is a fourth control mode of the sheet processing apparatus,
It is a command chart figure of a printer controller and CPU.

FIG. 24 is a fifth control mode of the sheet processing apparatus,
It is a command chart figure of a printer controller and CPU.

FIG. 25 is a sixth control mode of the sheet processing apparatus,
It is a command chart figure of a printer controller and CPU.

[Explanation of symbols]

S paper (sheet) M1 transport motor M2 paddle motor M3 separation motor M4 matching motor M5 stapler motor SL stamp solenoid 4 Alignment stage (processing sheet stacking means) 5 bundle discharge roller pair (sheet conveying means) 5U upper bundle discharge roller 5L lower bundle discharge roller 6 sheet alignment stacking section 6L left matching plate 6R Right matching plate 7 Ejection sheet stacking tray 15 Staplers (sheet processing means) 21 Printer controller (informing means) 41 CPU (control means) 50 sheet processing equipment 51 Sheet processing unit 100 Printer body 101 printer (image forming apparatus) 102 image forming unit (image forming means)

Claims (15)

[Claims] 1. A sheet processing unit for processing a sent sheet, a processing sheet stacking unit for stacking sheets processed by the sheet processing unit, and a sheet stacked on the processing sheet stacking unit. When a sheet conveying unit that conveys the sheet and information that the fed sheet is in an abnormal state is received, the sheet is stacked on the processing sheet stacking unit, the job is interrupted, and the job stop information is received The sheet conveying means is controlled so that the sheets stacked on the processing sheet stacking means are discharged without being processed, and when the continuation information is received, the sheet processing means and the sheet conveying means are connected to each other. And a control unit configured to control the sheet stacked on the processing sheet stacking unit to discharge the sheet. Location. 2. The sheet processing apparatus according to claim 1, wherein the job cancellation information is a job cancellation instruction. 3. The sheet processing apparatus according to claim 1, wherein the job cancellation information is a sheet automatic discharge instruction. 4. The sheet processing apparatus according to claim 1, wherein the job cancellation information is a job end instruction. 5. The sheet processing apparatus according to claim 1, wherein the job cancellation information is a next job start instruction. 6. The sheet processing apparatus according to claim 1, wherein the job continuation information is a job continuation instruction. 7. The sheet processing apparatus according to claim 1, wherein the job continuation information is page information without a job end instruction and a next job start instruction. 8. An image forming unit that forms an image on a sheet, a sheet processing apparatus that processes the sheet on which the image is formed, and a notification that sends information to the sheet processing apparatus when the sheet is in an abnormal state. Means, the sheet processing apparatus is the sheet processing apparatus according to any one of claims 1 to 7, and the information received by the control means of the sheet processing apparatus is information from the notification means. An image forming apparatus characterized in that there is. 9. An image forming unit for forming an image on a sheet, a sheet processing unit for processing the sheet on which the image is formed, and a processing sheet stacking unit for stacking sheets processed by the sheet processing unit. Sheet conveying means for conveying the sheets stacked on the processing sheet stacking means, notification means for issuing information when the sheets are in an abnormal state, and information for receiving the sheets in the abnormal state from the notification means When the sheet is stacked on the processing sheet stacking means, the job is interrupted, and when the job cancellation information is received, the sheet conveying means is controlled to process the sheets stacked on the processing sheet stacking means. When the sheet is discharged without receiving the information, and the continuation information is received, the sheet processing means and the sheet conveying means are controlled so that the processing sheet stacking hand is operated. Subjected to a treatment in sheets stacked on an image forming apparatus characterized by and a control means for discharging the sheet. 10. The image forming apparatus according to claim 9, wherein the job cancel information is a job cancel instruction. 11. The image forming apparatus according to claim 9, wherein the job cancel information is a sheet automatic discharge instruction. 12. The image forming apparatus according to claim 9, wherein the job cancel information is a job end instruction. 13. The image forming apparatus according to claim 9, wherein the job cancellation information is a next job start instruction. 14. The image forming apparatus according to claim 9, wherein the job continuation information is a job continuation instruction. 15. The image forming apparatus according to claim 9, wherein the job continuation information is page information without a job end instruction and a next job start instruction.