JP2004219694A - Paper post processing device and image forming system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly carry out connection to a new paper post processing device by eliminating an upgrading of screen data for display which has been carried out each time the new paper post processing device is connected in an image forming apparatus. <P>SOLUTION: In the post processing device 2, jamming position screen data and jamming releasing procedure data are stored to a screen data storing means 23. When the jamming is detected by a detecting signal from the detecting means 23, jamming detection information is transmitted to the image forming apparatus 1 through a serial communication means 22 and the jamming position screen data corresponding to the jamming position are read from the image data storing means 24 and transmitted to the image forming apparatus 1. When a jamming releasing procedure screen data request is received from the image forming apparatus 1, jamming releasing procedure screen data corresponding to the jamming position are read and transmitted to the image forming apparatus 1. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a paper post-processing apparatus for performing post-processing such as binding processing on paper on which an image is recorded by an image forming apparatus such as a copier, a printer, a facsimile, and a multifunction peripheral having these functions. The present invention relates to an image forming system including a processing device and an image forming device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in an image forming apparatus such as a digital copying machine, when a jam (paper jam) occurs, a method of displaying guidance for canceling the jam has been proposed.
For example, Patent Literature 1 discloses a technology in which a digital copying machine is provided with a storage unit that stores and manages guidance information, and displays optimal guidance information for a trouble that has occurred in a unit of one screen or continuously and sequentially. Have been.
[0003]
[Patent Document 1]
JP-A-11-231729
[Problems to be solved by the invention]
However, the conventional image forming apparatus is configured to hold display screen data for guidance of jam release, such as a jam position screen and a jam clearing procedure screen, in the ROM in the operation display unit. Each time a new paper post-processing device (hereinafter, referred to as a post-processing device) is newly connected, screen data corresponding to the new post-processing device is newly developed and the ROM in the operation display unit is upgraded. I had to. In addition, when there is no more free space in the ROM in the operation display unit for holding screen data, there is a problem that new screen data cannot be added.
[0005]
An object of the present invention is to make it possible to omit the upgrade of display screen data, which is performed every time a new sheet post-processing apparatus is connected in an image forming apparatus, and to smoothly connect a new sheet post-processing apparatus. Is to be able to do it.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the invention described in claim 1 is
In a paper post-processing device that performs post-processing on paper discharged from an image forming apparatus,
Communication means for communicating with the image forming apparatus;
Screen data storage means for storing screen data for displaying information about a jam in the sheet post-processing apparatus;
Detecting means for detecting the occurrence of the jam and its jam position,
When a jam is detected by the detection unit, notifying the image forming apparatus of the detection of the jam via the communication unit, reading screen data corresponding to the detected jam from the screen data storage unit, Control means for controlling transmission.
[0007]
The invention described in claim 4 is
In an image forming system including an image forming apparatus and a sheet post-processing apparatus that performs post-processing on a sheet discharged from the image forming apparatus,
The sheet post-processing apparatus includes a communication unit that communicates with the image forming apparatus, a screen data storage unit that stores screen data for displaying information regarding a jam in the post-processing apparatus, and the occurrence and the jam of the jam. Detecting means for detecting a position, and, when a jam is detected by the detecting means, notifying the image forming apparatus of the detection of the jam via the communication means; screen data corresponding to the detected jam Reading from the screen data storage means and transmitting, and control means for controlling,
The image forming apparatus includes communication means for communicating with the sheet post-processing apparatus, and display means for displaying screen data received from the sheet post-processing apparatus via the communication means.
[0008]
According to the inventions described in claims 1 and 4, screen data for displaying information on a jam that has occurred in the sheet post-processing apparatus in the sheet post-processing apparatus is stored in the screen data storage unit, and the occurrence of the jam and its When the jam position is detected, the detection of the jam is notified to the image forming apparatus, and the screen data corresponding to the detected jam is read from the screen data storage unit and transmitted. Therefore, since the screen data displayed on the operation display unit of the image forming apparatus is held on the sheet post-processing apparatus side, when a new post-processing apparatus is connected to the image forming apparatus, the new post-processing apparatus is used each time. It is not necessary to develop screen data and upgrade the screen data of the ROM in the operation display unit. As a result, a new paper post-processing device can be connected smoothly.
[0009]
The invention according to claim 2 is the invention according to claim 1,
The screen data storage means stores jam position screen data corresponding to each jam position as the screen data,
The control unit, when a jam is detected by the detection unit, notifies the image forming apparatus of the detection of the jam via the communication unit, and displays jam position screen data corresponding to the detected jam position. It is characterized by being read from the screen data storage means and transmitted.
[0010]
The invention according to claim 5 is the invention according to claim 4,
The screen data storage means of the sheet post-processing device stores jam position screen data corresponding to each jam position as the screen data,
The control unit of the sheet post-processing device, when a jam is detected by the detection unit, notifies the image forming apparatus of the detection of the jam via the communication unit and responds to the detected jam position. It is characterized in that jam position screen data is read from the screen data storage means and transmitted.
[0011]
According to the second and fifth aspects of the present invention, when a jam is detected in the sheet post-processing apparatus, the image forming apparatus is notified of the detection of the jam, and the jam position screen data according to the detected jam position. Is read from the screen data storage means and transmitted. Therefore, the jam position can be displayed on the image forming apparatus.
[0012]
The invention according to claim 3 is the invention according to claim 1 or 2,
The screen data storage means stores jam release procedure screen data corresponding to each jam position as the screen data,
In response to a request from the image forming apparatus, the control unit reads jam release procedure screen data corresponding to the detected jam position from the screen data storage unit and transmits the screen data to the image forming apparatus. I have.
[0013]
The invention according to claim 6 is the invention according to claim 4 or 5,
The screen data storage means of the sheet post-processing apparatus stores jam release procedure screen data corresponding to each jam position as the screen data,
The image forming apparatus further includes control means for requesting the jam post-processing procedure screen data to the sheet post-processing apparatus,
The control means of the sheet post-processing apparatus reads out jam clearing procedure screen data corresponding to the detected jam position and transmits the screen data to the image forming apparatus in response to a request from the image forming apparatus. .
[0014]
According to the third and sixth aspects of the present invention, the sheet post-processing apparatus reads the jam clearing procedure screen data corresponding to the detected jam position from the screen data storage unit in response to a request from the image forming apparatus. Transmit to the image forming apparatus. Accordingly, the image forming apparatus can display more detailed jam clearing procedure screen data as needed.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the configuration will be described.
FIG. 1 shows an overall configuration of an image forming system 100 according to the present embodiment and a functional configuration of each device. As shown in FIG. 1, the image forming system 100 is configured such that an image forming apparatus 1 and a post-processing apparatus 2 are connected by serial communication and data can be transmitted and received. The number of post-processing devices 2 connected to one image forming apparatus 1 is not particularly limited.
[0016]
Next, each device constituting the image forming system 100 will be described.
First, the internal configuration of the image forming apparatus 1 will be described.
[0017]
As shown in FIG. 1, the image forming apparatus 1 includes a control unit 11, a serial communication unit 12, an operation unit 13, an image reading unit 14, an image forming unit 15, a recording paper storage unit 16, a feeding unit 17, and a conveying unit 18. , Screen data storage means 19 and the like, and each unit is connected by a bus.
[0018]
The control unit 11 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU of the control means 11 reads the system programs and various processing programs stored in the ROM by operating the input means 13b and develops them in the RAM, and concentrates the operation of each part of the image forming apparatus 1 according to the developed programs. Control.
[0019]
The control unit 11 sends a copy start signal and a paper discharge signal to the post-processing apparatus 2 based on the operation of the image forming apparatus 1 in accordance with a data transmission / reception sequence during a copying operation described below with the control unit 21 of the post-processing apparatus 2. When a jam detection notification, a jam position screen data, a jam release procedure screen data, and the like are received from the post-processing device 2, a control signal of the jam release procedure screen data request and the like are transmitted. The operation is stopped or the received screen data is displayed on the display unit 13a.
[0020]
The serial communication unit 12 includes a serial communication I / F and controls transmission and reception of control signals, screen data, and the like by serial communication between the image forming apparatus 1 and the post-processing apparatus 2.
[0021]
The operation unit 13 includes a display unit 13a and an input unit 13b. The display unit 13a is configured by an LCD (Liquid Crystal Display), and displays various operation buttons, a status display of the apparatus, an operation status of each function, and the like on a display screen in accordance with an instruction of a display signal input from the control unit 11. . The input means 13b is constituted by a pressure-sensitive (resistive film pressure type) touch panel in which transparent electrodes are arranged in a grid on the display screen of the LCD, and detects the XY coordinates of the force point pressed by a finger or a touch pen as a voltage value. , And outputs the detected position signal to the control means 11 as an operation signal. The input unit 13b includes various operation buttons such as a number button and a start button, and outputs an operation signal by a button operation to the control unit 11.
[0022]
The image reading means 14 includes a scanner below the contact glass on which the document is placed, and reads an image of the document. The scanner is configured by a light source, a CCD (Charge Coupled Device), and the like. The scanner reads an image of the original by forming a reflected light of the light scanned and illuminated from the light source onto the original and photoelectrically converts the image, and reads the read image into image forming means. 15 is output. Here, the image is not limited to image data such as figures and photographs, but also includes text data such as characters and symbols.
[0023]
The image forming unit 15 includes a photosensitive drum, a toner, and the like. When a sheet having the size and orientation input from the input unit 13 a is transported by the transport unit 18 in accordance with a print instruction from the control unit 11. Then, an electrostatic latent image of the image input from the image reading unit 14 is formed on the surface of the photosensitive drum. Further, the image forming unit 15 attaches toner to an area including the electrostatic latent image on the surface of the photosensitive drum, transfers the toner to recording paper, fixes the toner, and then discharges the toner to the post-processing device 2.
[0024]
The recording paper storage means 16 stores recording paper for transferring an image. The recording paper storage means 16 includes presence / absence detection means 16 a for detecting the presence / absence of storage of the recording paper, and paper size detection means 16 b for detecting the size of the stored paper, and outputs a detection signal to the control means 11.
[0025]
According to an instruction from the control unit 11, the feeding unit 17 reverses both sides of the document placed at the document setting position and automatically feeds the document onto the contact glass. The transport unit 18 transports the recording paper stored in the recording paper storage unit 16 to each unit such as the image forming unit 15 according to an instruction from the control unit 11.
[0026]
The screen data storage unit 19 is a memory that temporarily stores the screen data transmitted from the post-processing device 2.
[0027]
Next, the internal configuration of the post-processing device 2 will be described.
As shown in FIG. 1, the post-processing device 2 includes a control unit 21, a serial communication unit 22, a detection unit 23, a screen data storage unit 24, a first transport unit 25, a second transport unit 26, a first accumulation unit 27, It comprises a second stacking means 28, a stack matching means 29, a stapling means 30, a shift means 31, and the like, and each part is connected by a bus.
[0028]
The control means 21 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU of the control means 21 reads out the system programs and various processing programs stored in the ROM, expands them in the RAM, and centrally controls the operation of each part of the post-processing device 2 according to the expanded programs.
[0029]
That is, the control unit 21 executes a copy operation process described later according to the developed program, and when the detection unit 23 detects the occurrence of the jam, stops the operation of each unit and notifies the image forming apparatus 1 of the jam detection notification. Then, jam position screen data corresponding to the detected jam position is read from the screen data storage unit 24 and transmitted. Further, when a jam clearing procedure screen request is received from the image forming apparatus 1, jam clearing procedure screen data corresponding to the jam position is read from the screen data storage unit 24 and transmitted to the image forming apparatus 1. Transmission and reception of signals and data with the image forming apparatus 1 during the copy operation process are performed in accordance with a copy operation data transmission and reception sequence described later.
[0030]
The serial communication unit 22 includes a serial communication I / F and controls transmission and reception of control signals, screen data, and the like by serial communication between the image forming apparatus 1 and the post-processing apparatus 2.
[0031]
The detecting means 23 includes a bypass sensor 231, a stacker sensor 232, a finisher discharge sensor 233, and the like in the detailed configuration diagram of the post-processing device 2 shown in FIG. 2, and detects the occurrence of a jam by detecting the position of a recording sheet. , The jam release is detected, and this detection information is output to the control means 21.
[0032]
The screen data storage means 24 is composed of a flash memory or the like, and stores various jam position screen data and jam clearing procedure screen data.
[0033]
The first transporting unit 25 is the transporting path 251 or 252 in FIG. 2. The first transporting unit 25 transports the recording paper discharged from the image forming apparatus 1 by using a roller including a driving unit including a motor or the like. Conveyed to.
[0034]
The second transport unit 26 is the transport path 251, 262, 263, or the like in FIG. 2, and uses a roller including a drive unit such as a motor to transport the recording paper discharged from the image forming apparatus 1 to the stack alignment unit 29, Conveyed to the means 31 and the like.
[0035]
The first stacking unit 27 is the sub-tray 271 shown in FIG. 2, and discharges and stacks recording paper that is not subjected to post-processing such as stapling and shift processing.
[0036]
The second stacking unit 28 is the main tray 281 shown in FIG. 2, and stacks the recording sheets that have been subjected to post-processing such as stapling and shift processing.
[0037]
As shown in FIG. 2, the stack aligning means 29 is provided with an inclination, and the recording paper transported from the transport path 262 to the upper portion of the stack aligning means 29 slides down to the flat binding stopper 291 by its own weight and stops. As a result, the plurality of recording sheets in the stack aligning means 29 are aligned in the transport direction, and are aligned in the transport direction. The width of the recording paper surface orthogonal to the transport direction is adjusted by lightly tapping the recording paper by a light striking mechanism (not shown).
[0038]
The stapling unit 30 staples a plurality of recording papers aligned in the transport direction and the width direction above the flat binding stopper 291 of the stack alignment unit 29. The stapling means 30 strikes a staple on recording paper of the stack aligning means 29 in accordance with an instruction from the control means 21. The plurality of recording sheets on which stapling has been performed are pushed upward while the rear end thereof is held by a discharge claw by a discharge belt 292 of the stack aligning means 29, passed through a finisher discharge sensor 233, and then discharged onto a main tray 281. Paper.
[0039]
The shift means 31 discharges the recording paper input from the transport path 251 to the transport path 263 onto the main tray 281 with the position shifted in a direction orthogonal to the recording paper transport direction.
The movement of this position is performed by moving the transport roller 311 of the shift means 31 in the width direction orthogonal to the transport direction while performing transport.
[0040]
Next, the operation will be described.
FIG. 3 shows a copy operation process executed by the control unit 21 of the post-processing device 2.
[0041]
When a copy operation start instruction (copy start signal) is received from the image forming apparatus 1 via the serial communication unit 22 (step S1; YES), processing during the copy operation is performed (step S2). Specifically, an initialization process is performed, and thereafter, a process of receiving a recording sheet discharged from the image forming apparatus 1, a post-process for the received recording sheet, and the like are performed. When the occurrence of the jam (jam during the copy operation) is detected by the detection unit 23 (step S3; YES), the respective units of the post-processing device 2 are stopped (step S4), and the occurrence of the jam is determined by the image forming apparatus. 1 is set in the transmission buffer (step S5), and jam position screen data corresponding to the position of the jam is read from the screen data storage unit 24 and set in the transmission buffer (step S5). Step S6). Then, it is transmitted to the image forming apparatus 1 via the serial communication unit 22 (step S7).
[0042]
After the transmission, the clearing of the jam is awaited, and if the clearing of the jam is detected by the detecting means 23 (step S8; YES), the process returns to step S1. If the jam release is not detected (step S8; NO), and a jam release procedure screen data transmission request is received from the image forming apparatus 1 (step S9; YES), the image data is stored in the screen data storage unit 24 according to the position of the jam. The jam release procedure screen data is read, set in the transmission buffer (step S10), and transmitted to the image forming apparatus 1 via the serial communication unit 22 (step S11). Then, the process returns to step S8 to wait for the jam to be cleared.
[0043]
FIG. 4 shows a data transmission / reception sequence during a copy operation, which is executed by the control unit 11 of the image forming apparatus 1 and the control unit 21 of the post-processing apparatus 2. This sequence is performed between the control unit 21 and the control unit 11 during the copy operation processing by the control unit 21 in FIG.
[0044]
In the image processing apparatus 1, when a start of copy is instructed from the input unit 13b (step S101), a copy start signal is transmitted from the control unit 11 to the control unit 21 (step S102). Upon receiving the copy start signal, the post-processing device 2 executes an initialization process at the time of copy start (step S103).
[0045]
In the image forming apparatus 1, when the copy processing is executed and the recording paper on which the image is formed is discharged to the post-processing apparatus 2 (step S104), a paper discharge signal is transmitted from the control unit 11 to the control unit 21 (step S104). S105). In the post-processing device 2, when this signal is received by the control means 21, the receiving process and the post-process of the discharged recording paper are executed (step 106). Steps S104 to S106 are repeatedly executed each time a recording sheet is discharged.
[0046]
When a jam occurs in the post-processing device 2 and the jam is detected by the detection unit 23 (step S107), the jam detection information is transmitted from the control unit 21 to the control unit 11, and the jam position information is also transmitted from the screen data storage unit 24. Is read and transmitted (step S108). In the image forming apparatus 1, when the detection information and the jam position screen data are received, the received jam position screen data is temporarily stored in the screen data storage unit 19, and is stored in the display unit 13a under the control of the control unit 11. It is displayed (step S109).
[0047]
When the display of the jam clearing procedure screen is instructed by the input means 13b (step S110), a jam clearing procedure screen data request is transmitted from the control means 11 to the control means 21 (step S111). When this request is received by the control means 21 of the post-processing device 2, jam release procedure screen data corresponding to the jam position is read from the screen data storage means 24 and transmitted to the image forming apparatus 1 (step S112). .
In the image forming apparatus 1, when the jam release procedure screen data is received, the screen data is temporarily stored in the screen data storage unit 19, and displayed on the display unit 13a under the control of the control unit 11 (step S113). .
[0048]
FIG. 5A is a diagram illustrating an example of the jam position display screen 131 displayed on the display unit 13a in step S109 of FIG. As shown in FIG. 5A, a message for notifying a jam such as "Paper jam. Please remove the paper according to the guide" on the jam position display screen 131, an illustration of the jam position, and an explanation for clearing the jam. The sentence is displayed. When the “illustration explanation” button 131a at the upper right of the screen is pressed, a jam release procedure screen 132 shown in FIG. 5B is displayed, and the jam release procedure is displayed with guidance by illustration and text description. When the next page is displayed by further pressing the arrow button, a jam release procedure screen 133 shown in FIG. 5C is displayed. In this way, the jam release procedure can be sequentially displayed.
[0049]
As described above, according to the post-processing device 2, the jam position screen data and the jam release procedure data are stored in the screen data storage unit 24, and when a jam is detected by the detection signal from the detection unit 23, the serial communication is performed. The jam detection information is transmitted to the image forming apparatus 1 through the means 22, the jam is reported, and the jam position screen data corresponding to the detected jam position is read from the screen data storage means 24 and the image is detected. Sent to forming apparatus 1. In the image forming apparatus 1, the received jam position screen data is displayed on the display unit 13a.
[0050]
Further, when the post-processing device 2 receives a jam clearing procedure screen data request from the image forming apparatus 1, the jam clearing procedure screen data corresponding to the jam position is read and transmitted to the image forming apparatus 1. . The image forming apparatus 1 displays the received jam clearing procedure screen data on the display unit 13a.
[0051]
Therefore, since the screen data is held on the post-processing device 2 side, when a new post-processing device 2 is connected in the image forming apparatus 1, screen data corresponding to the new post-processing device 2 is developed each time. There is no need to upgrade the screen data.
As a result, it is possible to prevent a problem that new screen data cannot be added due to insufficient ROM free space in the operation unit 13 and a problem that the screen data does not correspond to the new post-processing device 2. The connection of the post-processing device 2 can be performed smoothly.
[0052]
The description in the above embodiment is a preferred example of the image forming system 100 according to the present invention, and the present invention is not limited to this.
For example, in the above embodiment, as a preferred embodiment, both the jam position screen and the jam release procedure screen are configured to be displayed on the image forming apparatus side. However, a system that displays only the jam position screen or a jam release screen is displayed. The system may be configured to display only the procedure screen. With this configuration, the image forming system can have a simple configuration.
[0053]
Further, in the present embodiment, the image forming apparatus 1 has been described as a copying machine, but the present invention can also be applied to an image forming apparatus such as a printer or a facsimile.
[0054]
In addition, the detailed configuration and detailed operation of each device constituting the printing system 100 can be appropriately changed without departing from the spirit of the present invention.
[0055]
【The invention's effect】
According to the inventions described in claims 1 and 4, screen data for displaying information on a jam that has occurred in the sheet post-processing apparatus in the sheet post-processing apparatus is stored in the screen data storage unit, and the occurrence of the jam and its When the jam position is detected, the detection of the jam is notified to the image forming apparatus, and the screen data corresponding to the detected jam is read from the screen data storage unit and transmitted. Therefore, since the screen data displayed on the operation display unit of the image forming apparatus is held on the sheet post-processing apparatus side, when a new post-processing apparatus is connected to the image forming apparatus, the new post-processing apparatus is used each time. There is no need to develop screen data that has been updated and upgrade the screen data in the operation display unit.
As a result, a new paper post-processing device can be connected smoothly.
[0056]
According to the second and fifth aspects of the present invention, when a jam is detected in the sheet post-processing apparatus, the image forming apparatus is notified of the detection of the jam, and the jam position screen data according to the detected jam position. Is read from the screen data storage means and transmitted. Therefore, the jam position can be displayed on the image forming apparatus.
[0057]
According to the third and sixth aspects of the present invention, the sheet post-processing apparatus reads the jam clearing procedure screen data corresponding to the detected jam position from the screen data storage unit in response to a request from the image forming apparatus. Transmit to the image forming apparatus. Accordingly, the image forming apparatus can display more detailed jam clearing procedure screen data as needed.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of an image forming system 100 according to the present invention and a functional configuration of each device.
FIG. 2 is a diagram showing a detailed configuration of a post-processing device 2 of FIG. 1;
FIG. 3 is a flowchart showing a copy operation process executed by a control unit 21 of FIG. 1;
FIG. 4 is a sequence chart showing data transmission and reception during a copy operation performed between the control unit 11 and the control unit 21 in FIG. 1;
5 is a diagram showing an example of a jam position screen 131 and jam release procedure screens 132 and 133 displayed on the display unit 13a of FIG.
[Explanation of symbols]
REFERENCE SIGNS LIST 100 image forming system 1 image forming apparatus 11 control means 12 serial communication means 13 operating means 13a display means 13b input means 14 image reading means 15 image forming means 16 recording paper storage means 16a presence / absence detection means 16b paper size detection means 17 feeding means 18 transport means 19 screen data storage means 2 post-processing device 21 control means 22 serial communication means 23 detection means 24 screen data storage means 25 first transport means 26 second transport means 27 first accumulation means 28 second accumulation means 29 stack matching Means 30 Staple means 31 Shift means

Claims (6)

In a paper post-processing device that performs post-processing on paper discharged from an image forming apparatus,
Communication means for communicating with the image forming apparatus;
Screen data storage means for storing screen data for displaying information about a jam in the sheet post-processing apparatus;
Detecting means for detecting the occurrence of the jam and its jam position,
When a jam is detected by the detection unit, notifying the image forming apparatus of the detection of the jam via the communication unit, reading screen data corresponding to the detected jam from the screen data storage unit, A sheet post-processing apparatus, comprising: a control unit that controls transmission. The screen data storage means stores jam position screen data corresponding to each jam position as the screen data,
The control unit, when a jam is detected by the detection unit, notifies the image forming apparatus of the detection of the jam via the communication unit, and displays jam position screen data corresponding to the detected jam position. 2. The sheet post-processing apparatus according to claim 1, wherein the sheet data is read from the screen data storage unit and transmitted. The screen data storage means stores jam release procedure screen data corresponding to each jam position as the screen data,
In response to a request from the image forming apparatus, the control unit reads jam clearing procedure screen data corresponding to the detected jam position from the screen data storage unit and transmits the screen data to the image forming apparatus. The sheet post-processing device according to claim 1 or 2, wherein In an image forming system including an image forming apparatus and a sheet post-processing apparatus that performs post-processing on a sheet discharged from the image forming apparatus,
The sheet post-processing apparatus includes a communication unit that communicates with the image forming apparatus, a screen data storage unit that stores screen data for displaying information about a jam in the sheet post-processing apparatus, and the occurrence of the jam and the generation of the jam. Detecting means for detecting a jam position, and, when a jam is detected by the detecting means, notifying the image forming apparatus of the detection of the jam via the communication means; screen data corresponding to the detected jam Reading from the screen data storage means and transmitting, and control means for controlling,
The image forming apparatus includes: a communication unit that communicates with the sheet post-processing device; and a display unit that displays screen data received from the sheet post-processing device via the communication unit. Forming system. The screen data storage means of the sheet post-processing device stores jam position screen data corresponding to each jam position as the screen data,
The control unit of the sheet post-processing device, when a jam is detected by the detection unit, notifies the image forming apparatus of the detection of the jam via the communication unit and responds to the detected jam position. The image forming system according to claim 4, wherein the jam position screen data is read from the screen data storage unit and transmitted. The screen data storage means of the sheet post-processing apparatus stores jam release procedure screen data corresponding to each jam position as the screen data,
The image forming apparatus further includes control means for requesting the jam post-processing procedure screen data to the sheet post-processing apparatus,
The control means of the sheet post-processing apparatus reads out jam clearing procedure screen data corresponding to the detected jam position and transmits the screen data to the image forming apparatus in response to a request from the image forming apparatus. The image forming system according to claim 4.

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