JP2014006384A - Image forming method and image forming system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently operate an image forming system while output of sheets of waste paper is minimized when a job is specified for sheets of paper exceeding a possible number in a paper process.SOLUTION: In an image forming system, an N number of sets, each of which consist of a paper bundle of an M number of sheets of paper, are used based on input job data, and image formation by an image forming apparatus 100 and a paper process by a paper processing device 300 are carried out to output sheets of paper. In this case, if N is equal to or smaller than a specified regulated number of sets when M exceeds a number of sheets of paper that a paper processing part can process, images are formed on sheets of the M number of sheets×N sets in an image forming part. Also, a paper process by the paper processing part is not carried out for sheets of paper with images formed thereon, and the sheets of paper are ejected to a sheet ejection part different from one used in normal time.

Description

  The present invention relates to an image forming method and an image forming system, and more particularly to an image forming method and an image forming system capable of efficient processing when paper processing is performed following image formation.

  By connecting various paper processing devices as post-processing devices after the image forming device, various bookbinding processes can be performed as an image forming system, which can be used as a printing device in the field of production printing.

  For example, in addition to the normal stapling process (side stitching process) at the edge of the sheet, a sheet bundle is formed by folding the sheet in the center of the sheet, and the stapling process (saddle stitching process) is performed on the fold portion of the sheet bundle. It is possible to output the booklet as a saddle stitched book.

  In this case, the number of sheets that can be processed per booklet is determined by the ability of the side stitching process or the saddle stitching process. In this case, the number of sheets that can be processed cannot be exceeded due to the structure of the staple needle and the binding mechanism. In addition to the paper size and basis weight, the number of sheets that can be processed is also determined by the internal structure of the paper processing unit. In this case, the number of sheets that can be processed cannot be exceeded due to the structure of the support unit and the conveyance unit in the sheet processing unit, the component strength, and the like.

  For the control of the image forming apparatus when the number of sheets that can be processed is exceeded, technologies related to the following patent documents have been proposed.

JP 11-189365 A JP 2005-17692 A JP 2005-119788 A

  In the invention described in Patent Document 1 above, whether or not the stapling process is appropriate is determined, and the paper determined to be inadequate for the stapling process is discharged to a tray different from the normal one, and the normal output product and the abnormal state are discharged. The output is distinguished from the output.

  In the invention described in Patent Document 2, when there are jobs exceeding the number of sheets that can be processed, an inquiry selection screen for execution continuation / execution is displayed on the display unit, and control is performed based on the operator's selection. Technology has been proposed.

  In the invention described in Patent Document 3 described above, when the maximum number of sheets to be bound is detected, the stapling process is stopped and output, and thereafter the image formation is controlled to be stopped.

  In the field of production printing, since it is used in a situation where a large amount of printed matter is output, it is important to ensure high reliability (reduction of stop time) and to suppress waste paper that is not the final output matter.

  Here, in the above cited document 1, image formation is not stopped and is distinguished from a normal output product, but for a job for which stapling processing is determined to be inappropriate, all the set number of sheets are output as wasted paper. It will end up. Here, if there is little waste paper, it is possible to perform the stapling process manually. However, in production printing, since there is a large amount of output, it is often very difficult to perform stapling process manually.

  Further, in the above cited document 2, if the operator does not give an instruction, the process is temporarily stopped, and when it is instructed to continue execution, all the set number of sheets are output as wasted paper. Will end up.

  In the cited document 3, the output of waste paper is suppressed to some extent by the operation interruption, but the output of waste paper cannot be effectively suppressed.

That is, according to the conventional technology, when a job exceeding the number of sheets that can be processed occurs,
・ The processing of the succeeding job is delayed due to the interrupted job.
-Processing of subsequent jobs will be delayed until the canceled job is manually canceled.
-Canceling the post-processing of the interrupted job and outputting it to another tray results in a huge amount of wasted paper.
The problem has arisen.

  The present invention has been made in view of such problems, and minimizes the output of wasted paper when a job for a number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing. An object of the present invention is to provide an image forming method and an image forming system capable of operating the image forming system efficiently without delaying output of subsequent jobs.

  (1) According to one aspect of the present invention, in an image forming system including an image forming unit, a paper processing unit, a plurality of paper discharge units, and a control unit, M per copy is based on input job data. When N sheets are bundled as N copies and image formation and paper processing are executed and output, if M exceeds the number of sheets that can be processed by the paper processing section, N should be equal to or less than the specified number of copies specified in advance. For example, the image forming unit forms an image on M × N sheets, and the sheet on which the image is formed is not processed by the sheet processing unit, and is discharged to the paper discharge unit different from the normal time. To do.

  (2) Also, in (1), when M exceeds the number of sheets that can be processed by the sheet processing unit, if N exceeds the specified number of copies specified in advance, an image is formed on the M sheets by the image forming unit. At the same time, the M sheets on which the image is formed are discharged to the paper discharge unit different from the normal time without performing paper processing in the paper processing unit.

  (3) Also, in (1)-(2), as the paper processing in the paper processing unit, flat binding processing for binding the end of the paper with staples and saddle stitching processing for binding the central portion of the paper with staples are possible. With respect to the specified number of copies specified in advance as the number of copies to be output, it is possible to accept the specification separately as the specified number of copies for side stitching and the specified number of copies for saddle stitching.

  (4) According to one aspect of the present invention, when an image forming system executes and outputs image forming and sheet processing with M sheet bundles per copy as N copies based on input job data. When M exceeds the number of sheets that can be processed by the sheet processing unit, the job is deleted and image formation is not executed.

  (1) In one aspect of the present invention, when an image forming system executes and outputs image forming and sheet processing with M sheet bundles per copy as N copies based on input job data, If M exceeds the number of sheets that can be processed by the sheet processing unit and N is equal to or less than the specified number of copies specified in advance, an image is formed on M × N sheets, and the sheet processing unit does not perform sheet processing. Even when a job for the number of sheets exceeding the number of sheets that can be processed is specified in the sheet processing because the sheet is discharged to the sheet discharge unit different from the normal time, N copies equal to or less than the specified number of copies specified in advance. Therefore, it is possible to efficiently operate the image forming system without delaying the output of the succeeding job in a state where the output of the waste paper is minimized.

  (2) Also, in (1), when M exceeds the number of sheets that can be processed by the sheet processing unit, if N exceeds the specified number of copies specified in advance, an image is formed on the M sheets by the image forming unit. At the same time, the M sheets on which the image is formed are discharged to the paper discharge unit different from the normal time without performing paper processing in the paper processing unit. Even when a job for an excessive number of sheets is designated, only one copy is output, so that the output of the succeeding job is delayed without delaying the output of the waste paper, and the image forming system. Can be operated efficiently.

  (3) Also, in (1)-(2), for the specified number of copies specified in advance as the number of copies to be output, designation is separately accepted as the side binding specified number of copies for the side stitch processing and the saddle stitch specified number of copies for the saddle stitch processing. By enabling this, even when a job for a number of sheets exceeding the number of sheets that can be processed is specified in the sheet processing, the number of specified side binding specified by the side binding specified in advance according to the content of the sheet processing or the number of specified saddle binding specified Therefore, the image forming system can be efficiently operated without delaying the output of the succeeding job in a state where the output of the waste paper is minimized.

  (4) In one aspect of the present invention, when an image forming system executes and outputs image forming and sheet processing with M sheet bundles as N copies per copy based on input job data. When M exceeds the number of sheets that can be processed by the sheet processing unit in the job, the job is deleted and the image formation is not executed, so that the job for the number of sheets exceeding the number of sheets that can be processed in the sheet processing is designated. In this case, it is possible to operate the image forming system efficiently without outputting waste paper and without delaying output of subsequent jobs.

1 is a block diagram illustrating a configuration of an image forming system according to an embodiment of the present invention. 1 is a configuration diagram illustrating a configuration of an image forming system according to an exemplary embodiment of the present invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is explanatory drawing which shows the setting screen of the paper processing apparatus of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings.

[Configuration of image forming system]
With reference to FIG. 1 and FIG. 2, the configuration of an image forming system including a sheet processing apparatus according to the present embodiment will be described.

  As shown in FIGS. 1 and 2, the image forming system 10 includes an image forming apparatus 100 and a sheet processing apparatus 300. Note that another sheet processing apparatus may exist between the image forming apparatus 100 and the sheet processing apparatus 300. Further, the image forming apparatus 100 and the sheet processing apparatus 300 may be configured integrally or may be configured to be separably connected.

  The image forming apparatus 100 controls each unit in the image forming apparatus 100 and controls the entire image forming system 10, a communication unit 102 for communicating with other connected devices, and an operator An operation display unit 103 that notifies an operation input signal corresponding to an operation input to the control unit 101 and displays the status of the image forming apparatus 100, and stores a control program and various setting data, and is used as a work area for the control program. The storage unit 104, the paper supply unit 105 that supplies the stored paper, the conveyance unit 110 that conveys the paper that is fed and image-formed, and the document is scanned to generate image data. Document reading unit 120, image data storage unit 130 for storing image data and various data used for image formation, and various images necessary for image formation An image processing unit 140 to execute processing, an image forming unit 150 for performing image formation (printing) on the basis of the image formation instruction and the image data is configured to include a. Note that the paper on which the image is formed by the image forming apparatus 100 is carried out toward the paper processing apparatus 300 at the subsequent stage.

  The sheet processing apparatus 300 is connected as a post-processing apparatus to the downstream side (rear stage) of the image forming apparatus 100, and communicates with the image forming apparatus 100 and a control unit 301 that controls each unit in the sheet processing apparatus 300. A communication unit 302, a storage unit 304 that stores a control program and various setting data and is used as a work area for the control program, a conveyance unit 310 that conveys a sheet at a predetermined speed in the sheet processing apparatus 300, and punches a sheet A punching section 320 that performs a staple binding process at a predetermined position on the edge of the sheet to generate a booklet, a folding section 340 that folds the sheet in half or in three, and a folding section 340 A saddle stitching unit 350 that generates a booklet by performing saddle stitching processing on the center of the received paper, and a first tray that discharges the paper to the first tray 380T. A detecting section 380, a second tray discharge unit 390 for discharging the sheet to the second tray 390T, configured with a.

  The connection between the image forming apparatus 100 and the sheet processing apparatus 300 in FIGS. 1 and 2 is an example of the image forming system 10 and is not limited to such connection or sheet processing.

  Here, the first tray 380 and the second tray 390 form a plurality of paper discharge units. In the job, one of the first tray 380 and the second tray 390 is designated as the output destination.

〔basic action〕
Hereinafter, the basic operation of the present embodiment will be described with reference to the flowchart of FIG. Here, the description will focus on the control when the sheet processing apparatus 300 in the image forming system 10 in the connected state of FIGS. 1 and 2 discharges a plurality of sheets on which images are formed as a booklet. In this embodiment, it is assumed that, based on input job data, image forming and sheet processing are executed and output using a bundle of M sheets per copy as an N-part booklet.

  When the image formation apparatus 100 is instructed to start image formation and a job is input, the control unit 101 expands the job data after initializing the page data count (step S101 in FIG. 3). While storing the page data in the storage unit 130 (steps S102 and S103 in FIG. 3), the page data is counted (step S104 in FIG. 3).

  When the control unit 101 counts up to the last page (YES in steps S104 and S105 in FIG. 3), the control unit 101 determines whether to form an image on both sides of the paper or on one side (step in FIG. 3). If it is the double-sided image formation mode (YES in step S106 in FIG. 3), the number of transfer sheets per copy M = page data count / 2 is calculated (step S107 in FIG. 3), and single-sided image formation is performed. If the mode is selected (NO in step S106 in FIG. 3), the number of transfer sheets M per copy is calculated as M = page data count (step S108 in FIG. 3).

  Then, the control unit 101 performs a limit number corresponding process for each sheet processing mode according to the calculated transfer sheet number M per copy (step S109 in FIG. 3).

  In the following description, the limit number means the number of sheets that can be processed in each mode and each condition. Therefore, the control unit 101 determines the final number of sheets that can be processed by calculating and comparing the limit number of sheets in each mode and each condition.

  As the sheet processing mode, in the following description of the operation, a side stitching process (a process for binding the end of the sheet with staples) mode, a saddle stitching process (a process for binding the fold at the center of the sheet with staples) mode, and a center folding process ( Although a specific example is a mode in which folding is performed at the center of the paper and processing is not performed by stapling, and a mode in which the paper is folded in three (processing in which the paper is folded at two locations) mode is not limited thereto.

  The processing for handling the limit number of sheets for each paper processing mode will be described in detail with reference to the flowcharts in FIG. 4 and subsequent figures. Based on the input job data, a bundle of M sheets per copy is designated as N copies. When executing and outputting image formation and paper processing, when M exceeds the number of papers that can be processed for each paper processing mode, if N is equal to or less than a predetermined number of copies L, the image forming unit In this process, an image is formed on M × N sheets, and the sheet on which the image is formed is not subjected to sheet processing in the sheet processing unit, and is discharged to a sheet discharge unit different from the normal time.

[Processing for limit number of sheets by paper processing mode]
As the limit number corresponding processing for each paper processing mode (step S109 in FIG. 3), the control unit 101 determines that the paper processing specified in the input job is the side binding mode (in step S1091 in FIG. 4). (YES), a subroutine for the side binding mode limit number correspondence processing described later is executed (step S1092 in FIG. 4).

  If the sheet processing specified in the input job is the saddle stitching mode (NO in step S1091 in FIG. 4 and YES in step S1093), a subroutine for the saddle stitching mode limit number handling process described later is executed. (Step S1094 in FIG. 4).

  If the sheet processing specified in the input job is in the middle folding mode (NO in step S1093 in FIG. 4 and YES in step S1095), a subroutine for processing the number of sheets in the middle folding mode limit described later is executed. (Step S1096 in FIG. 4).

  If the paper processing specified in the input job is in the tri-fold mode (NO in step S1095 in FIG. 4 and YES in step S1097), a subroutine for processing corresponding to the tri-fold mode limit number described later is executed. (Step S1098 in FIG. 4).

  In addition to the paper size and basis weight, the number of sheets that can be processed is determined for each paper processing mode (flat stitching mode, saddle stitching mode, middle folding mode, trifold mode) depending on the internal structure of the paper processing apparatus 300. The That is, the number of sheets that can be processed cannot be exceeded due to the structure of the sheet support section and the sheet transport section used for each sheet processing of the sheet processing apparatus 300 and the component strength.

  Tables 1 and 2 below show the number of sheets that can be processed, that is, the limit number of sheets for each sheet processing mode.

Table 1 is an example of a list of limit sheets determined from the paper size. Here, an example of a sheet processing apparatus 300 having different apparatuses # 1, # 2, # 3, and # 4 is shown. In the table, the part with “-” means that it is not supported.

  Table 2 is an example of a list of limit sheets determined from the paper basis weight. Here, an example of a sheet processing apparatus 300 having different apparatuses # 1, # 2, # 3, and # 4 is shown. In the table, the part with “-” means that it is not supported.

  In practice, as will be described later, the control unit 101 compares the limit number determined from the sheet size with the limit number determined from the sheet basis weight, and adopts a smaller limit number as the number of sheets that can be processed. Performs overall control of image formation and paper processing.

[Set the specified number of copies when the number of sheets that can be processed is exceeded]
In the image forming system 10 according to this embodiment, when executing and outputting the image forming and sheet processing with M sheet bundles per copy as N copies based on the input job data, M is a sheet processing apparatus. If the number of sheets that can be processed exceeds 300 and N is equal to or less than a predetermined number of copies L that is designated in advance, the image forming apparatus 100 forms an image on M × N sheets, and the sheet on which the image is formed In this case, the sheet processing apparatus 300 performs control to discharge the sheet to a sheet discharge unit different from the normal time without performing sheet processing. Further, when M exceeds the number of sheets that can be processed by the sheet processing apparatus 300, if N exceeds a predetermined number of copies L specified in advance, the image forming apparatus 100 converts the number of sheets into M sheets (sheets equivalent to one copy). In addition to forming an image, the M paper on which the image is formed is controlled to be discharged to a paper discharge unit different from the normal time without performing paper processing in the paper processing apparatus 300.

  Here, the control unit 101 receives a specification from the operator via the operation display unit 103 in advance for the specified number of copies L. That is, the control unit 101 displays the setting menu screen 103A shown in FIG. 5 on the operation display unit 103, and can be processed in each paper processing (side stitching processing, saddle stitching processing, center folding processing, trifold processing, etc.). An input of the number of copies corresponding to the specified number of copies L is accepted as to how many copies of the sheet are permitted to be output when the number of sheets is exceeded.

  The specified number of copies L is determined by canceling the sheet processing for the image-formed sheet bundle and outputting it, and confirming that the image formation has been performed, and manually processing the output sheet bundle (side-stitching process) , Saddle stitching processing, folding processing, etc.).

  In the specific example shown in FIG. 5, the specified number of copies in flat stitching (the number of specified copies in flat binding) L is 2 (103a1 in FIG. 5), and the specified number of copies in saddle stitching (the number of specified copies in saddle stitching) L is 5 (in FIG. 5). 103a2), the specified number of copies in the middle fold (the number of specified copies in the middle fold) L is 3 copies (103a3 in FIG. 5), the specified number of copies in the three fold (the specified number of folds in three) L is 4 copies, (103a4 in FIG. 5) Is shown. This input may be performed via the numeric keypad 103ak or may be performed using a hard key of the operation display unit 103.

  Here, as the specified number of copies for manually processing the output sheet bundle, the specified number of copies in the side stitching and the specified number of copies in the saddle stitching can be set individually, so that manual side binding or It is desirable to be able to control according to the saddle stitching operability and ease of implementation, and to suppress the possibility of waste paper generation. In addition, it is desirable that the specified number of copies can be set independently for each of the side stitching, saddle stitching, center folding, and trifolding, which can suppress the possibility of waste paper generation.

[Processing for limit binding mode limit number of sheets]
As the limit number corresponding processing for each paper processing mode (step S109 in FIG. 3), the control unit 101 determines that the paper processing specified in the input job is the side binding mode (in step S1091 in FIG. 4). YES), the following subroutine (FIG. 6) of the side binding mode limit number correspondence processing is executed (step S1092 in FIG. 4). Here, the side stitching mode is a mode for performing a side stitching process using staples at the end of the paper, and does not include saddle stitching described later.

  In this side stitching mode limit number handling process (FIG. 6), the control unit 101 executes a side stitching size limit number calculation process shown in the flowchart of the subroutine of FIG. 7 (step S201 in FIG. 6). The flowchart of the side stitching size limit number calculation process shown in FIG. 7 is a specific example of the apparatus # 2 in Table 1 described above.

  Here, when the transfer paper size is A3, 11 × 17, 12 × 18, SRA3 (YES in step S2011 in FIG. 7, YES in S2012, YES in S2013, YES in S2014), the size in the side stitching mode. The limit number is 50 (step S2015 in FIG. 7).

  If the transfer paper size is other than A3, 11 × 17, 12 × 18, or SRA3 (NO in step S2011 in FIG. 7, NO in S2012, NO in S2013, NO in S2014), the side stitching is performed. The number of size limit sheets in the mode is 100 sheets (step S2016 in FIG. 7).

  Further, in this side stitching mode limit number handling process, the control unit 101 executes a side stitching basis weight limit number calculation process shown in the flowchart of the subroutine of FIG. 8 (step S202 in FIG. 6). The flowchart of the side stitching basis weight limit number calculation processing shown in FIG. 8 is a specific example of the apparatus # 2 in Table 2 described above, and a normal paper other than the coated paper is a specific example as the paper. . Note that Gram per Square Meter is expressed as gsm as a unit of basis weight.

  Here, if the basis weight of the transfer sheet is 50-91 gsm (YES in step S2021 in FIG. 8), the basis weight limit number in the flat binding mode is 50 (step S2022 in FIG. 8). If the basis weight of the transfer paper is 92-135 gsm (YES in step S2023 in FIG. 8), the basis weight limit number in the flat binding mode is 50 (step S2024 in FIG. 8). If the basis weight of the transfer paper is 136-162 gsm (YES in step S2025 in FIG. 8), the basis weight limit number in the side binding mode is 40 sheets (step S2026 in FIG. 8). If the basis weight of the transfer sheet is 163 to 244 gsm (YES in step S2027 in FIG. 8), the basis weight limit number in the flat binding mode is 50 (step S2028 in FIG. 8). If the basis weight of the transfer paper exceeds 244 gsm (NO in step S2027 in FIG. 8), the basis weight limit number in the flat binding mode is 10 (step S2029 in FIG. 8).

  Then, the control unit 101 compares the size relationship between the size limit number of sheets and the basis weight limit number calculated in the above manner (step S203 in FIG. 6).

  Here, the control unit 101 determines the smaller one of the size limit number and the basis weight limit number, that is, the more strictly limited value, as the limit number of sheets that can be processed in the side binding mode. Therefore, if the basis weight limit number is smaller than the size limit number (YES in step S203 in FIG. 6), the basis weight limit number is set as the limit number in the side stitching mode (step S204 in FIG. 6). If the size limit number is smaller than the basis weight limit number (NO in step S203 in FIG. 6), the size limit number is set as the limit number in the side stitching mode (step S205 in FIG. 6).

  Then, the control unit 101 compares the limit number calculated as described above with the number M of transfer sheets per copy designated in the job (step S206 in FIG. 6).

  Here, if the number M of transfer sheets per copy is equal to or less than the limit number (NO in step S206 in FIG. 6), no problem occurs in the side stitching process in the side stitching unit 330. The number-of-sheets corresponding process is terminated (END in FIG. 6, step S1092-END in FIG. 4, S109-END in FIG. 3).

  Therefore, in this case, based on the input job data, image formation and sheet processing in the image forming apparatus 100 are performed so that a bundle of M sheets per copy forms N booklets by staple binding. The control unit 101 controls to execute the side stitching process in the apparatus 300.

  On the other hand, if the number of transfer sheets M per copy exceeds the limit number (YES in step S206 in FIG. 6), there is a possibility that some problems may occur in the flat binding process in the flat binding unit 330. The control unit 101 cancels the paper processing specified as a job (here, the flat binding processing of the flat binding unit 330), and sets the discharge destination to another tray other than the normal tray specified as the discharge destination. Change (step S207 in FIG. 6). Thus, by changing the designation so that the sheet bundle is discharged to a tray different from the normal tray, it becomes clear to the operator that the sheet processing is not performed.

  Further, the control unit 101 compares the number of copies N set as a job with the specified number of copies L set on the setting menu screen shown in FIG. 5 (step S208 in FIG. 6). If the number N of copies set as a job is equal to or less than the specified number of copies L (YES in step S208 in FIG. 6), the side binding mode limit number correspondence processing is terminated (end in FIG. 6, step S1092 in FIG. 4). End, S109-End in FIG. 3).

  As a result, under the control of the control unit 101, the image forming apparatus 100 forms an image on M × N sheets, and the sheet on which the image is formed is not processed in the sheet processing apparatus 300. Eject paper to a different tray than the hour. If the first tray 380T is designated in the job, in this case, a sheet that is not processed is discharged to the second tray 390.

  As a result, even when a job for the number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing, the output of N copies is equal to or less than a predetermined specified number of copies L. In this state, the image forming system 10 can be efficiently operated without delaying output of subsequent jobs.

  Further, the control unit 101 compares the number of copies N set as a job with the specified number of copies L set on the setting menu screen shown in FIG. 5 (step S208 in FIG. 6), and is set as a job. If the number of copies N exceeds the specified number of copies L (NO in step S208 in FIG. 6), the number of copies N set as a job is forcibly changed to 1 (step S209 in FIG. 6). The image forming apparatus 100 forms an image on M sheets, and the M sheets on which the images are formed are discharged to a tray different from the normal time without performing the sheet processing in the sheet processing apparatus 300. The control unit 101 controls as described above.

  As a result, even when a job for the number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing, only one copy is output, so the succeeding job can be performed with minimal output of wasted paper. It is possible to operate the image forming system efficiently without delaying the output of.

[Saddle stitching mode limit number correspondence processing]
As the limit number corresponding processing for each paper processing mode (step S109 in FIG. 3), the control unit 101 determines that the paper processing specified in the input job is the saddle stitching mode (in step S1093 in FIG. 4). YES), the following subroutine (FIG. 9) of the saddle stitching mode limit number correspondence processing is executed (step S1094 in FIG. 4). Here, the saddle stitching mode is a mode in which saddle stitching is performed by stapling the fold at the center of the sheet.

  In the saddle stitching mode limit number correspondence processing (FIG. 9), the control unit 101 executes the saddle stitching size limit number calculation processing shown in the flowchart of the subroutine of FIG. 10 (step S301 in FIG. 9).

  The flowchart of the saddle stitching size limit number calculation process shown in FIG. 10 is a specific example of the apparatus # 2 in Table 1 described above. Here, the size limit number in the saddle stitching mode is 50 sheets (step S3011 in FIG. 10).

  Further, in the saddle stitching mode limit sheet count corresponding process, the control unit 101 executes the saddle stitching basis weight limit sheet number calculating process shown in the flowchart of the subroutine of FIG. 11 (step S302 in FIG. 9). The flowchart of the saddle stitching basis weight limit number calculation process shown in FIG. 11 is a specific example of the apparatus # 2 in Table 2 described above, and a normal paper other than the coated paper is given as a specific example. .

  If the basis weight of the transfer paper is 50-61 gsm (YES in step S3021 in FIG. 11), the basis weight limit number in the saddle stitching mode is 25 (step S3022 in FIG. 11). If the basis weight of the transfer paper is 62-91 gsm (YES in step S3023 in FIG. 11), the basis weight limit number in the saddle stitching mode is 20 (step S3024 in FIG. 11). If the basis weight of the transfer paper exceeds 91 gsm (NO in step S3023 in FIG. 11), the basis weight limit number in the saddle stitching mode is 5 (step S3025 in FIG. 11).

  Then, the control unit 101 compares the size relationship between the size limit number of sheets in the saddle stitching mode and the basis weight limit number calculated as described above (step S303 in FIG. 9).

  Here, the control unit 101 determines the smaller one of the size limit sheet number and the basis weight limit sheet number, that is, the more strictly restricted one, as the limit sheet number as the number of sheets that can be processed in the saddle stitching mode. Therefore, if the basis weight limit number is smaller than the size limit number (YES in step S303 in FIG. 9), the basis weight limit number is set as the limit number in the saddle stitching mode (step S304 in FIG. 9). If the size limit number is smaller than the basis weight limit number (NO in step S303 in FIG. 9), the size limit number is set as the limit number in the saddle stitching mode (step S305 in FIG. 9).

  Then, the control unit 101 compares the limit number calculated as described above with the number M of transfer sheets per copy designated in the job (step S306 in FIG. 9).

  Here, if the number of transfer sheets M per copy is equal to or less than the limit number (NO in step S306 in FIG. 9), there is no problem in the saddle stitching process in the saddle stitching unit 350, so the saddle stitching mode limit. The number correspondence processing is terminated (END in FIG. 9, steps S1094 to END in FIG. 4, S109 to END in FIG. 3).

  Therefore, in this case, based on the input job data, the image forming apparatus 100 and the sheet in the image forming apparatus 100 perform the saddle stitching process on a bundle of M sheets per copy to form an N-part booklet. The control unit 101 controls to execute the saddle stitching process in the processing apparatus 300.

  On the other hand, if the number M of transfer sheets per copy exceeds the limit number (YES in step S306 in FIG. 9), some problems may occur in the saddle stitching process in the saddle stitching unit 350. The control unit 101 cancels the paper processing specified as a job (here, the saddle stitching process by the saddle stitching unit 350) and changes the discharge destination to another tray other than the normal tray specified as the discharge destination. (Step S307 in FIG. 9). Thus, by changing the designation so that the sheet bundle is discharged to a tray different from the normal tray, it becomes clear to the operator that the sheet processing is not performed.

  Further, the control unit 101 compares the number of copies N set as a job with the specified number of copies L set on the setting menu screen shown in FIG. 5 (step S308 in FIG. 9). If the number of copies N set as a job is equal to or less than the specified number of copies L (YES in step S308 in FIG. 9), the saddle stitching mode limit number correspondence processing is ended (end in FIG. 9, step S1094 in FIG. 4). End, S109-End in FIG. 3). As a result, under the control of the control unit 101, the image forming apparatus 100 forms an image on M × N sheets, and the sheet on which the image is formed is not processed in the sheet processing apparatus 300. Discharge to a different tray.

  As a result, even when a job for the number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing, the output of N copies is equal to or less than a predetermined specified number of copies L. In this state, the image forming system 10 can be efficiently operated without delaying output of subsequent jobs.

  Further, the control unit 101 compares the number of copies N set as a job with the specified number of copies L set on the setting menu screen shown in FIG. 5 (step S308 in FIG. 9), and is set as a job. If the number of copies N exceeds the specified number of copies L (NO in step S308 in FIG. 9), the number of copies N set as a job is forcibly changed to 1 (step S309 in FIG. 9). The image forming apparatus 100 forms an image on M sheets, and the M sheets on which the images are formed are discharged to a tray different from the normal time without performing the sheet processing in the sheet processing apparatus 300. The control unit 101 controls as described above.

  As a result, even when a job for the number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing, only one copy is output, so the succeeding job can be performed with minimal output of wasted paper. It is possible to operate the image forming system efficiently without delaying the output of.

  In the above description, the limit number and the transfer sheet number M are compared (step S306 in FIG. 9), and if the transfer sheet number M exceeds the limit number (YES in step S306 in FIG. 9), Although the sheet bundle in a state where the saddle stitching process is not performed is discharged to a tray different from the normal one, the present invention is not limited to this.

  That is, a dedicated large stapler is required to manually perform the saddle stitching process on a sheet bundle that is not saddle stitched. Therefore, even if a sheet bundle that has not been subjected to saddle stitching is discharged, manual saddle stitching may not be performed and waste paper may be generated as compared with the case of flat stitching.

  Therefore, as shown in FIG. 12, when the number M of transfer sheets per copy exceeds the limit number (YES in step S306 in FIG. 12), the job is deleted (step S310 in FIG. 12). It is also possible. In this case, neither image formation in the image forming apparatus 100 nor paper processing in the paper processing apparatus 300 is executed, and no paper is output. Therefore, it is desirable that the control unit 101 displays on the operation display unit 103 that the job has been deleted because the number M of transfer sheets per copy exceeds the limit number.

[Processing for the number of sheets in the middle folding mode limit]
As the limit number corresponding processing for each paper processing mode (step S109 in FIG. 3), the control unit 101 determines that the paper processing specified in the input job is in the middle folding mode (in step S1095 in FIG. 4). YES), the following subroutine (FIG. 13) of the process for dealing with the limit number of intermediate folding modes (FIG. 13) is executed (step S1096 in FIG. 4). Here, the half-fold mode is a mode in which the sheet is folded in half at the center of the sheet.

  In the half-folding mode limit number handling process (FIG. 13), the control unit 101 executes the half-folding size limit number calculating process shown in the flowchart of the subroutine of FIG. 14 (step S401 in FIG. 13).

  The flowchart of the half-fold size limit number calculation process shown in FIG. 14 is a specific example of the apparatus # 2 in Table 1 described above. Here, the size limit number in the middle folding mode is 5 (step S4011 in FIG. 14).

  Further, in the process for handling the number of sheets in the middle folding mode limit, the control unit 101 executes the processing for calculating the number of sheets in the middle folding basis weight limit shown in the flowchart of the subroutine of FIG. 15 (step S402 in FIG. 13). In the flowchart of the process for calculating the number of sheets with the folded folded basis weight shown in FIG. 15, the case of the apparatus # 2 in Table 2 described above is taken as a specific example, and a normal paper other than coated paper is taken as a specific example as the paper. .

  Here, if the basis weight of the transfer paper is 50-61 gsm (YES in step S4021 in FIG. 15), the basis weight limit number in the middle folding mode is 5 (step S4022 in FIG. 15). If the basis weight of the transfer paper exceeds 61 gsm (NO in step S4021 in FIG. 15), the basis weight limit number in the middle folding mode is 1 (step S4023 in FIG. 15).

  Here, the control unit 101 determines the smaller one of the size limit sheet number and the basis weight limit sheet number, that is, the more strictly restricted one, as the limit sheet number as the number of sheets that can be processed in the middle folding mode. Therefore, if the basis weight limit number is smaller than the size limit number (YES in step S403 in FIG. 13), the basis weight limit number is set as the limit number in the middle folding mode (step S404 in FIG. 13). If the size limit number is smaller than the basis weight limit number (NO in step S403 in FIG. 13), the size limit number is set as the limit number in the middle folding mode (step S405 in FIG. 13).

  Then, the control unit 101 compares the limit number calculated as described above with the number M of transfer sheets per copy designated in the job (step S406 in FIG. 13).

  Here, if the number M of transfer sheets per copy is equal to or less than the limit number (NO in step S406 in FIG. 13), no problem occurs in the middle folding process in the folding unit 350. The handling process is terminated (END in FIG. 13, step S1096 to end in FIG. 4, S109 to end in FIG. 3).

  Therefore, in this case, based on the input job data, the image forming apparatus 100 and the paper in the image forming apparatus 100 perform a half-folding process on the M sheet bundle per copy to form an N-part booklet. The control unit 101 controls to execute the middle folding process in the processing device 300.

  On the other hand, if the number M of transfer sheets per copy exceeds the limit number (YES in step S406 in FIG. 13), there is a possibility that some problem may occur in the middle folding process in the folding unit 350. The unit 101 cancels the sheet processing specified as a job (here, the folding process by the folding unit 340), and changes the discharge destination to another tray other than the normal tray specified as the discharge destination ( Step S407 in FIG. 13). Thus, by changing the designation so that the sheet bundle is discharged to a tray different from the normal tray, it becomes clear to the operator that the sheet processing is not performed.

  Further, the control unit 101 compares the number of copies N set as a job with the specified number of copies L set on the setting menu screen shown in FIG. 5 (step S408 in FIG. 13). If the number of copies N set as a job is equal to or less than the specified number of copies L (YES in step S408 in FIG. 13), the process for handling the folding mode limit number of sheets ends (end in FIG. 13, steps S1096 in FIG. 4). End, S109-End in FIG. 3). As a result, under the control of the control unit 101, the image forming apparatus 100 forms an image on M × N sheets, and the sheet on which the image is formed is not processed in the sheet processing apparatus 300. Discharge to a different tray.

  As a result, even when a job for the number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing, the output of N copies is equal to or less than a predetermined specified number of copies L. In this state, the image forming system 10 can be efficiently operated without delaying output of subsequent jobs.

  Further, the control unit 101 compares the number of copies N set as a job with the specified number of copies L set on the setting menu screen shown in FIG. 5 (step S408 in FIG. 13), and is set as a job. If the number of copies N exceeds the specified number of copies L (NO in step S408 in FIG. 13), the number of copies N set as a job is forcibly changed to 1 (step S409 in FIG. 13). The image forming apparatus 100 forms an image on M sheets, and the M sheets on which the images are formed are discharged to a tray different from the normal time without performing the sheet processing in the sheet processing apparatus 300. The control unit 101 controls as described above.

  As a result, even when a job for the number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing, only one copy is output, so the succeeding job can be performed with minimal output of wasted paper. It is possible to operate the image forming system efficiently without delaying the output of.

[Tri-Fold mode limit number processing]
As the limit number corresponding processing for each paper processing mode (step S109 in FIG. 3), the control unit 101 determines that the paper processing specified in the input job is in the trifold mode (in step S1097 in FIG. 4). YES), a subroutine (FIG. 16) of the following three-fold mode limit number correspondence processing is executed (step S1098 in FIG. 4). Here, the three-fold mode is a mode in which the paper is folded at two places and processed into a state of being folded in three pieces.

  In this tri-fold mode limit number corresponding process (FIG. 16), the control unit 101 executes a tri-fold size limit number calculation process shown in the flowchart of the subroutine of FIG. 17 (step S501 in FIG. 16).

  The flowchart of the tri-fold size limit number calculation process shown in FIG. 17 is a specific example of the apparatus # 2 in Table 1 described above. Here, the number of size limit sheets in the tri-fold mode is 5 sheets (step S5011 in FIG. 17).

  Further, in this tri-fold mode limit number corresponding processing, the control unit 101 executes tri-fold basis weight limit number calculation processing shown in the flowchart of the subroutine of FIG. 18 (step S502 in FIG. 16). The flowchart of the tri-fold basis weight limit number calculation process shown in FIG. 18 is a specific example of the apparatus # 2 in Table 2 described above, and a normal paper other than the coated paper is a specific example as the paper. .

  If the basis weight of the transfer paper is 50-91 gsm (YES in step S5021 in FIG. 18), the basis weight limit number in the tri-fold mode is 3 (step S5022 in FIG. 18). If the basis weight of the transfer paper exceeds 91 gsm (NO in step S5021 in FIG. 18), the basis weight limit number in the tri-fold mode is 1 (step S5023 in FIG. 18).

  Here, the control unit 101 determines the smaller one of the size limit sheet number and the basis weight limit sheet number, that is, the more strictly limited sheet, as the limit sheet number as the number of sheets that can be processed in the tri-fold mode. Therefore, if the basis weight limit number is smaller than the size limit number (YES in step S503 in FIG. 16), the basis weight limit number is set as the limit number in the tri-fold mode (step S504 in FIG. 16). If the size limit number is smaller than the basis weight limit number (NO in step S503 in FIG. 16), the size limit number is set as the limit number in the tri-fold mode (step S505 in FIG. 16).

  Then, the control unit 101 compares the limit number calculated as described above with the number M of transfer sheets per copy designated in the job (step S506 in FIG. 16).

  Here, if the number M of transfer sheets per copy is equal to or less than the limit number (NO in step S506 in FIG. 16), no problem occurs in the tri-fold processing in the folding unit 350, and therefore the tri-fold mode limit number of sheets. The response processing is terminated (END in FIG. 16, step S1098 to end in FIG. 4, S109 to end in FIG. 3).

  Therefore, in this case, based on the input job data, the M sheet bundle per sheet is tri-folded to form N copies and the image forming apparatus 100 and the sheet processing apparatus have N copies. The control unit 101 controls to execute the tri-fold process at 300.

  On the other hand, if the number M of transfer sheets per copy exceeds the limit number (YES in step S506 in FIG. 16), there is a possibility that some problem may occur in the tri-fold processing in the folding unit 350. The unit 101 cancels the sheet processing designated as a job (here, the tri-folding process by the folding unit 340) and changes the discharge destination to another tray other than the normal tray designated as the discharge destination ( Step S507 in FIG. 16). Thus, by changing the designation so that the sheet bundle is discharged to a tray different from the normal tray, it becomes clear to the operator that the sheet processing is not performed.

  Further, the control unit 101 compares the number of copies N set as a job with the specified number of copies L set on the setting menu screen shown in FIG. 5 (step S508 in FIG. 16). If the number of copies N set as a job is equal to or less than the specified number of copies L (YES in step S508 in FIG. 16), the tri-fold mode limit number correspondence processing is ended (end in FIG. 16, step S1098 in FIG. 4). End, S109-End in FIG. 3). As a result, under the control of the control unit 101, the image forming apparatus 100 forms an image on M × N sheets, and the sheet on which the image is formed is not processed in the sheet processing apparatus 300. Discharge to a different tray.

  As a result, even when a job for the number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing, the output of N copies is equal to or less than a predetermined specified number of copies L. In this state, the image forming system 10 can be efficiently operated without delaying output of subsequent jobs.

  Further, the control unit 101 compares the number of copies N set as a job with the specified number of copies L set on the setting menu screen shown in FIG. 5 (step S508 in FIG. 16), and is set as a job. If the number of copies N exceeds the specified number of copies L (NO in step S508 in FIG. 16), the number of copies N set as a job is forcibly changed to 1 (step S509 in FIG. 16). The image forming apparatus 100 forms an image on M sheets, and the M sheets on which the images are formed are discharged to a tray different from the normal time without performing the sheet processing in the sheet processing apparatus 300. The control unit 101 controls as described above.

  As a result, even when a job for the number of sheets that exceeds the number of sheets that can be processed is specified in the sheet processing, only one copy is output, so the succeeding job can be performed with minimal output of wasted paper. It is possible to operate the image forming system efficiently without delaying the output of.

[Effect obtained by each embodiment]
In each of the embodiments described above, M can be processed by the paper processing unit when image formation and paper processing are executed and output with N paper bundles as N copies per copy based on input job data. If the number of sheets is exceeded and N is equal to or less than the predetermined number of copies specified in advance, an image is formed on M × N sheets, and the sheet processing unit does not perform sheet processing. Even when a job for a number of sheets that exceeds the number of sheets that can be processed is specified in the paper processing for discharging to the paper section, the output of N copies is equal to or less than the prespecified specified number of copies. It is possible to efficiently operate the image forming system without delaying the output of the succeeding job while the output is minimized.

  Further, when M exceeds the number of sheets that can be processed by the sheet processing unit, if N exceeds a predetermined number of copies specified in advance, the image forming unit forms an image on M sheets and an image is formed. For the M sheets, the sheet processing unit does not perform the sheet processing and the sheet is discharged to a sheet discharge unit different from the normal time. Therefore, a job for the number of sheets exceeding the number of sheets that can be processed in the sheet processing is performed. Even when specified, since only one copy is output, it is possible to operate the image forming system efficiently without delaying the output of subsequent jobs while minimizing the output of waste paper. become.

  In addition, the specified number of copies specified in advance as the number of copies to be output can be processed in paper processing by allowing the specification to be separately accepted as the specified number of copies for side binding and the specified number of copies for saddle stitching. Even when a job for the number of sheets exceeding the number of sheets is designated, the output is N copies that are equal to or less than the prescribed number of side binding and the number of saddle stitching specified in advance according to the content of the sheet processing. Thus, it is possible to efficiently operate the image forming system without delaying the output of the succeeding job in a state where the output of the above is minimized.

  In addition, when M sheets bundles of N copies are set as N copies based on the input job data and image formation and sheet processing are executed and output, M is the number of sheets that can be processed by the sheet processing section in the job. By deleting the job and not executing image formation when the number exceeds the limit, even if a job for the number of sheets exceeding the number of sheets that can be processed is specified in the sheet processing, the waste paper is not output and the subsequent The image forming system can be efficiently operated without delaying the output of the job.

[Other Embodiments]
The specific processing content of the paper processing and the number of papers that can be processed shown in the above embodiment are examples, and are not limited to the specific examples shown, and various modifications are possible.

  Further, the image forming system 10 shown in FIG. 1 may be configured such that the image forming apparatus 100 and the sheet processing apparatus 300 are integrated, or the image forming apparatus 100 and the sheet processing apparatus 300 may be combined. Another processing device may be inserted in between.

DESCRIPTION OF SYMBOLS 100 Image forming apparatus 101 Control part 102 Communication part 103 Operation display part 104 Storage part 105 Paper feed part 110 Conveyance part 120 Original reading part 130 Image data storage part 140 Image processing part 150 Image forming part 300 Paper processing apparatus 301 Control part 302 Communication Unit 310 transport unit 320 punch unit 330 flat binding unit 340 folding unit 350 saddle stitching unit 380T first tray 380 first tray discharge unit 390T second tray 390 second tray discharge unit 400 sheet processing apparatus

Claims (8)

An image forming unit for forming an image on paper;
A paper processing unit that performs paper processing on the paper on which the image is formed;
A plurality of paper discharge units for discharging paper processed by the paper processing unit;
In an image forming system including an image forming unit in the image forming unit, paper processing in the paper processing unit, and a control unit that controls paper discharge to the paper discharge unit, 1 is set based on input job data. An image forming method for executing image formation and sheet processing and outputting a sheet bundle of M sheets as N copies per copy,
When M exceeds the number of sheets that can be processed by the sheet processing unit, if N is equal to or less than L specified in advance, the image forming unit forms an image on M × N sheets, and the image is The formed paper is not subjected to paper processing in the paper processing unit, and is discharged to the paper discharge unit different from the normal time.
An image forming method. When M exceeds the number of sheets that can be processed by the sheet processing unit, if N exceeds a predetermined L, the image forming unit forms an image on M sheets and an image is formed. The M sheets of paper are discharged to the paper discharge unit different from the normal time without performing paper processing in the paper processing unit.
The image forming method according to claim 1. As the paper processing in the paper processing unit, it is possible to perform a flat binding process for binding the end of the paper with staples and a saddle stitching process for binding the central part of the paper with staples,
With respect to the specified number of copies specified in advance as the number of copies to be output, it is possible to accept designation separately as the specified number of copies for side binding for the saddle stitching processing and the specified number of copies for saddle stitching.
The image forming method according to claim 1, wherein the image forming method is an image forming method. An image forming unit for forming an image on paper;
A paper processing unit that performs paper processing on the paper on which the image is formed;
A plurality of paper discharge units for discharging paper processed by the paper processing unit;
In an image forming system including an image forming unit in the image forming unit, paper processing in the paper processing unit, and a control unit that controls paper discharge to the paper discharge unit, 1 is set based on input job data. An image forming method for executing image formation and sheet processing and outputting a sheet bundle of M sheets as N copies per copy,
When M exceeds the number of sheets that can be processed by the sheet processing unit in the job, the job is deleted and image formation is not executed.
An image forming method. An image forming unit for forming an image on paper;
A paper processing unit that performs paper processing on the paper on which the image is formed;
A plurality of paper discharge units for discharging paper processed by the paper processing unit;
An image forming system comprising: a control unit that controls image formation in the image forming unit, paper processing in the paper processing unit, and paper discharge to the paper discharge unit;
When executing and outputting image formation and paper processing with M sheets bundle per copy as N copies based on the input job data,
The controller is
When M exceeds the number of sheets that can be processed by the sheet processing unit, if N is equal to or less than a predetermined number specified in advance, the image forming unit is controlled to form an image on M × N sheets. At the same time, control is performed so that the paper on which the image is formed is not discharged to the paper discharge unit different from the normal time without performing paper processing in the paper processing unit.
An image forming system. The controller is
When M exceeds the number of sheets that can be processed by the sheet processing unit, if N exceeds a predetermined number of copies specified in advance, the image forming unit is controlled to form an image on M sheets, and The M sheets on which images are formed are controlled to be discharged to the paper discharge unit different from the normal time without performing paper processing in the paper processing unit.
The image forming system according to claim 5. The paper processing unit can perform, as paper processing, a flat binding process for binding the end of the paper with staples and a saddle stitching process for binding the central part of the paper with staples,
The control unit is capable of accepting designation separately for a specified number of copies specified in advance as the number of copies to be output as a specified number of copies for side stitching and a specified number of copies for saddle stitching.
The image forming system according to claim 5, wherein the image forming system is an image forming system. An image forming unit for forming an image on paper;
A paper processing unit that performs paper processing on the paper on which the image is formed;
A plurality of paper discharge units for discharging paper processed by the paper processing unit;
An image forming system comprising: a control unit that controls image formation in the image forming unit, paper processing in the paper processing unit, and paper discharge to the paper discharge unit;
When executing and outputting image formation and paper processing with M sheets bundle per copy as N copies based on the input job data,
The controller is
When the M exceeds the number of sheets that can be processed by the sheet processing unit in the job, the job is deleted and image formation is not executed.
An image forming system.