JP5772268B2 - Image forming system - Google Patents

Description

  The present invention relates to an image forming system.

  2. Description of the Related Art In recent years, there has been known an image forming system configured by connecting a plurality of devices in series for the purpose of efficiently performing image formation on paper and various processes associated therewith. As this type of image forming system, an image forming apparatus that forms an image on a sheet and a configuration in which a plurality of post-processing apparatuses that perform post-processing on a sheet are connected in series are well known. In this image forming system, it is easy to change the layout of the apparatus or add a new apparatus. Therefore, there is an advantage that the system can be flexibly constructed and changed according to the user's application.

  For example, Patent Document 1 discloses an image forming apparatus that outputs a plurality of copies of print outputs corresponding to the same image data and performs post-processing with different settings for each print output. Specifically, the image forming apparatus includes an image forming unit that forms an image on a sheet, a post-processing unit that performs post-processing, an operation panel unit that receives a plurality of settings, and a plurality of images that are received by the operation panel unit. The execution order button for accepting the setting of the execution order of post-processing based on the setting and the post-processing corresponding to each of a plurality of settings accepted by the operation panel unit based on the same original image are accepted by the execution order button. And an execution order control unit that is executed by the post-processing unit in the execution order. Thereby, post-processing according to each setting can be performed in the order as intended by the user.

JP 2009-31669 A

  However, according to the method disclosed in Patent Document 1, when two different post processes are set, the execution of the other post process is started after the end of the execution of the one post process. Since the processing time for post-processing exists independently, there is a problem that the total processing time required for a single print command becomes long.

  The present invention has been made in view of such circumstances, and the object of the present invention is even in the case where the contents of a single print command execute different post-processing on print outputs corresponding to the same image data. This is to shorten the total processing time required for the single print command, thereby improving the productivity of the entire system.

In order to solve this problem, the present invention provides an image forming system configured by connecting a plurality of apparatuses to each other. This image forming system is disposed on the rear side of an image forming apparatus that outputs a specified number of copies of print output corresponding to the same image data in response to execution of a single print command, The first post-processing device capable of executing the first post-processing for the print output from the image forming apparatus and the rear side of the first post-processing device are arranged to perform the print output from the image forming apparatus. And a second post-processing device capable of executing the second post-processing as a target. In this case, when the target for applying the first post-processing and the target for applying the second post-processing are individually set as the contents of the post-processing set in a single print command, The processing device and the second post-processing device execute individual post-processing in parallel. Here, the image forming system includes a control unit that determines an operation pattern that defines whether the print output output by the image forming apparatus is distributed to the first post-processing apparatus or the second post-processing apparatus. The control unit acquires a single print command from the user, and determines an operation pattern for executing the single print command from a plurality of operation patterns based on the single print command.

Here, in the present invention, the control unit determines an operation pattern for executing a single print command from a plurality of operation patterns based on post-processing post-processing parameters set in a single print command. It is preferable to do.

In the present invention, the first post-processing apparatus conveys the print output supplied from the image forming apparatus to the second post-processing apparatus side, bypassing the post-processing unit that executes the first post-processing. It is preferable to provide a common transport unit .

In the present invention, it is preferable that the control unit determines an operation pattern from a plurality of operation patterns on condition that the total processing time required for a single print command is short.

In the present invention, the control unit applies each post-processing when the number of copies to which the first post-processing is applied and the number of copies to which the second post-processing is applied are individually set in the designated number of copies. It is preferable to determine an operation pattern from a plurality of operation patterns based on the number of copies.

Further, in the present invention, the control unit, when determining the operation pattern from the plurality of operation patterns, the time required for printing of the print output by the image forming apparatus, the time required for the first post-processing by the first post-processing apparatus and It is preferable to consider the time required for the second post-processing by the second post-processing device.

  In the present invention, it is preferable that the control unit assigns the print output of the first copy to a device having a longer post-processing time of the first post-processing device or the second post-processing device.

In the present invention, the control unit individually determines a paper group to which the first post-processing is applied and a paper group to which the second post-processing is applied among a plurality of papers included in a single print output. When set, it is preferable to determine an operation pattern from a plurality of operation patterns based on a sheet group to which each post-processing is applied.

  According to the present invention, since the first and second post-processing devices can execute post-processing in parallel with respect to the print output from the image forming apparatus, different post-processing can be operated in parallel. Can do. Therefore, compared to the case where individual post-processing is executed after waiting for the end of the preceding post-processing, different post-processing can be executed redundantly, thereby reducing the total processing time required for the print command. Can do. As a result, the productivity of the entire system can be improved.

Explanatory drawing schematically showing the configuration of the image forming system Block diagram mainly showing control system of image forming system Explanatory drawing which shows the setting screen of the output setting by the operation display part 16 Explanatory drawing which shows the setting screen of the output setting by the operation display part 16 Explanatory drawing explaining the operation | movement concept of the 1st operation | movement pattern which performs two post-processing in parallel simultaneously. Explanatory drawing explaining the operation | movement concept of the 2nd operation | movement pattern which performs two post-processing in parallel simultaneously. Explanatory drawing explaining the operation | movement concept of the 3rd operation | movement pattern which performs two post-processing in parallel simultaneously. Explanatory drawing explaining the operation | movement concept of the 4th operation pattern which performs two post-processing in parallel simultaneously. Explanatory drawing explaining the operation | movement concept of the 5th operation pattern which performs two post-processing in parallel simultaneously.

(First embodiment)
FIG. 1 is an explanatory diagram schematically showing a configuration of an image forming system according to the present embodiment, and FIG. 2 is a block diagram mainly showing a control system of the image forming system. The image forming system is a system that performs image formation and post-processing on paper, and is configured by connecting a plurality of devices in series. The image forming system according to this embodiment includes an image forming apparatus 10 and four post-processing apparatuses 20 to 50.

  The image forming apparatus 10 is an electrophotographic image forming apparatus such as a copying machine. The image forming apparatus 10 has a function of forming an image on a sheet. When this is viewed functionally, the document reading apparatus 11, the image forming unit 13, the sheet conveying unit 14, and the image forming control unit 15. And have.

  The document reading device 11 is provided, for example, in the upper part of the image forming apparatus 10 and has an automatic document feeder (not shown). The document reading device 11 obtains an image signal by reading an image of a document while conveying the document by an automatic document feeder. This image signal is output to the image reading control unit 12. When the image reading control unit 12 obtains image data by performing processing such as A / D conversion, shading correction, and compression on the image signal, the image reading control unit 12 outputs the image data to the image formation control unit 15. Note that the image data input to the image forming control unit 15 is not limited to the data read by the document reading device 11 and is received from, for example, a personal computer (PC) connected to the image forming device or another image forming device. It may be what you did.

  The image forming unit 13 has a function of forming an image on a sheet. The image forming unit 13 in the present embodiment forms an image by using an electrophotographic method, and is disposed, for example, in an exposure unit composed of a laser light source or an optical system, a photosensitive drum, and its periphery. It consists of a charging / developing unit, a transfer unit, a fixing unit, and the like. The image forming unit 13 (1) charges the photosensitive drum, (2) forms an electrostatic latent image on the photosensitive drum by the exposure unit, and (3) attaches toner to the formed electrostatic latent image. The image (toner image) is formed on the sheet based on the image data through a series of processes of (4) transferring the toner image on the photosensitive drum to the sheet and (5) fixing the transferred toner image on the sheet. Form.

  The paper transport unit 14 is configured by rollers, guide members, and the like, and sends the paper specified by the user to the image forming unit 13 from a paper tray that stores paper of various sizes. Further, the paper transport unit 14 outputs the paper P on which the image is formed by the image forming unit 13 to the post-processing devices 20 to 50 that are subsequent devices.

  The image formation control unit 15 controls the operation of the image forming apparatus 10. As the image formation control unit 15, a microcomputer mainly composed of a CPU, a ROM, a RAM, and the like can be used.

  In response to a single print command, the image formation control unit 15 outputs print outputs corresponding to the same image data by the designated number. Here, the print output corresponds to one or more sheets output from the image forming apparatus 10 corresponding to a document as image data read by the document reading device 11 (or a document as image data received from a PC or the like). These papers are generically named, and an image corresponding to the image data is formed on each paper. Specifically, when the image formation control unit 15 acquires image data or the like input from the image reading control unit 12, each unit of the image forming apparatus 20 (the image formation unit 13 and the paper) is based on the input image data. The conveyance unit 14) is controlled to form an image corresponding to the input image data on a sheet.

  Further, as one of the features of the present embodiment, the image formation control unit 15 has a function as a control unit that integrally controls the operation of the entire image forming system. With the function as the control unit, the image forming apparatus 10 and the post-processing apparatuses 20 to 50 can perform cooperative operations.

  The operation display unit 16 is a device that can perform an input operation and information display. For example, the operation display unit 16 is a touch panel device that can perform an input operation according to information displayed on a display. The image formation control unit 15 sends a print command set by the user through the operation display unit 16, that is, a print start instruction and a print condition (for example, single-sided / double-sided printing type, designated number of copies, type and number of post-processing to be executed, Image density and magnification).

  The communication unit 17 functions as an input / output unit that establishes communication with other devices (post-processing devices 20 to 50) connected to each other. As a result, the image formation control unit 15 can communicate with the other post-processing control units 25 to 55 via the communication unit 17.

  The post-processing device 20 is a device that executes ring binding processing, which is a type of post-processing, for print output from the image forming apparatus 10. Here, the ring binding process is a process of binding the back portion of the sheet bundle, which is a print output, with a ring. The post-processing device 20 includes a ring binding unit 21, a paper transport unit 22, a common transport unit 23, a post-processing control unit 25, and a communication unit 26 when this is viewed functionally.

  The ring binding unit 21 includes various mechanisms that execute multi-hole punching on a print output that is a sheet bundle and bind the print output by a ring. The sheet conveying unit 22 conveys individual sheets supplied as print outputs from the image forming apparatus 10 and supplies them to the ring binding unit 21. The common transport unit 23 transports individual sheets supplied as print output from the image forming apparatus 10, bypasses the ring binding unit 21, and supplies the paper to post-processing devices 30 to 50 connected to the subsequent stage. The sheet conveyance unit 22 and the common conveyance unit 23 are configured by, for example, a plurality of conveyance rollers and a guide member.

  The post-processing control unit 25 controls the operation of the post-processing device 20. As the post-processing control unit 25, a microcomputer mainly composed of a CPU, a RAM, and a ROM can be used. The post-processing control unit 25 controls the ring binding unit 21 and the paper transport unit 22 to execute the ring binding process for the print output from the image forming apparatus 10. Further, the post-processing control unit 25 controls the common transport unit 23 to post-process the print output from the image forming apparatus 10 even when the ring binding unit 21 is executing the ring binding process. It can be supplied to the devices 30-50.

  The communication unit 26 functions as an input / output unit that establishes communication with other devices (the image forming apparatus 10 and the other post-processing devices 30 to 50) connected to each other. Accordingly, the post-processing control unit 25 can communicate with the other post-processing control units 35 to 55 and the image formation control unit 15 via the communication unit 26.

  Similarly to the above-described post-processing device 20, the post-processing devices 30 to 50 are devices that perform post-processing on the print output from the image forming apparatus 10, and each post-processing device 30 to 50 performs different post-processing. Is different. Specifically, the post-processing device 30 executes a saddle stitching process for stapling a center position of a print output that is a bundle of sheets and performing a middle folding with the center position as a reference. Further, the post-processing device 40 executes a case binding process in which a print output that is a bundle of sheets is covered with a cover sheet in a U-shape and glued. On the other hand, the post-processing device 50 executes a staple process (edge binding process) for stapling near the end of the print output that is a bundle of sheets.

  The post-processing device 30 includes a saddle stitching unit 31, a sheet conveyance unit 32, a common conveyance unit 33, a post-processing control unit 35, and a communication unit 36 when this is functionally grasped. The saddle stitching unit 31 includes various mechanisms that execute stapling at the center of the sheet bundle and fold the sheet bundle with a folding plate, a nip roller, or the like. The functions of the paper transport unit 32, the common transport unit 33, the post-processing control unit 35, and the communication unit 36 correspond to the functions of the post-processing device 20 described above, except that post-processing to be executed is different.

  The post-processing device 40 has a case binding unit 41, a paper transport unit 42, a common transport unit 43, a post-processing control unit 45, and a communication unit 46 when this is viewed functionally. The case binding unit 41 includes various mechanisms for performing a process of attaching a predetermined edge of the sheet bundle to cover the sheet bundle with a cover sheet. The functions of the paper transport unit 42, the common transport unit 43, the post-processing control unit 45, and the communication unit 46 correspond to the functions of the post-processing device 20 described above except that post-processing to be executed is different.

  The post-processing device 50 includes a staple unit 51, a paper transport unit 52, a common transport unit 53, a post-processing control unit 55, and a communication unit 56, when this is functionally grasped. The staple unit 51 is composed of various mechanisms for stapling a predetermined end of a sheet bundle. The functions of the paper transport unit 52, the common transport unit 53, the post-processing control unit 55, and the communication unit 56 correspond to the functions of the post-processing device 20 described above, except that post-processing to be executed is different.

  Further, the post-processing device 50 includes a sub paper discharge tray 57 and a main paper discharge tray 58 so that the print output from the image forming apparatus 10 can be discharged to the trays 57 and 58. .

  In the image forming system having such a configuration, the image forming control unit 15 which controls the image forming system determines which post-processing device 20 to 50 post-processing is applied when executing a single print command set by the user. Settings (hereinafter referred to as “output settings”) can be recognized. In general, a single output setting (JOB1) is set for a single print command, but in this embodiment, two output settings (JOB1, JOB2) are set for a single print command. ) Can be set. For example, when the content of a single print command is to output only 8 copies (specified number of copies) of print output corresponding to the same image data, the ring binding processing by the post-processing device 20 is applied to 3 copies of print output. For example, both the first output setting JOB to be performed and the second output setting JOB2 to apply the staple processing by the post-processing device 50 to five copies of print output are set.

  3 and 4 are explanatory diagrams showing a setting screen for output setting by the operation display unit 16. Specifically, the operation display unit 16 is provided with a setting area 16a for performing the first output setting JOB1 and a setting area 16b for performing the second output setting JOB2 as an initial screen. In the setting areas 16a and 16b, selection items corresponding to the contents of post-processing executed by the individual post-processing devices 20 to 50 such as “ring bind”, “saddle stitching”, “staple”, and “case binding” are displayed. (FIG. 3A).

  First, when “ring bind” in the setting area 16a of the first output setting JOB1 is selected, the display screen is switched accordingly, the number of copies to which the ring bind process is applied, designation of one or both sides, the type of paper, and the like. Can be further selected ((b) in the figure). When the setting related to the first output setting JOB1 is completed, the screen returns to the initial screen ((c) in the figure). In this state, when the “start” selection item corresponding to the print start instruction is selected, a print command is executed in which the number of copies of the first output setting JOB1 is three and the designated number of copies is three.

  On the other hand, when “staple” in the setting area 16b of the second output setting JOB2 is further selected, the display screen is switched accordingly, and the number of copies to which the stapling process is applied, designation of one side or both sides, the type of paper, and the like are set. Further selection can be made (FIG. 4A). When the setting related to the second output setting JOB2 is completed, the screen returns to the initial screen ((b) in the figure). In this state, when the “start” selection item corresponding to the print start instruction is selected, the number of copies of the first output setting JOB1 is 3, the number of copies of the second output setting JOB2 is 5, and the designated number of copies is 8. A print command is executed.

  As described above, both the first post-processing (post-processing based on the first output setting) and the second post-processing (post-processing based on the second output setting) are set as post-processing applied to a single print command. When it is done, the post-processing devices 20 to 50 corresponding to the first post-processing and the post-processing devices 20 to 50 corresponding to the second post-processing execute the post-processing in parallel.

  That is, a plurality of post-processing devices 20 to 50 are connected to the subsequent stage of the image forming apparatus 10. In each of the post-processing devices 20 to 50, print output from the image forming apparatus 10 is bypassed by the post-processing unit (ring binding unit 21 to staple unit 51) of the post-processing device 20 to the subsequent post-processing device 20 to 50. Common conveying sections 23 to 53 that convey the ink to 50 are provided. Therefore, when these post-processing devices 20 to 50 are connected, the common transport units 23 to 53 are also connected to each other, and thereby a series of paths passing through the plurality of post-processing devices 20 to 50. Will be secured. As a result, even if the post-processing devices 20 to 50 in the preceding stage are being executed, the print output can be conveyed to the post-processing devices 20 to 50 in the subsequent stage, and the post-processing devices 20 to 50 in the subsequent stage. Post processing can be performed.

  Accordingly, different post-processing devices 20 to 50 can be operated in parallel with respect to the print output from the image forming apparatus 10. Therefore, compared to the case where individual post-processing is executed after waiting for the end of the preceding post-processing, different post-processing can be executed redundantly, thereby reducing the total processing time required for the print command. Can do. As a result, the productivity of the entire system can be improved.

(Second Embodiment)
The image forming system according to the second embodiment will be described below. The second image forming system is different from the first embodiment in that individual post-processing is executed according to an appropriate combination when post-processing is executed in parallel. In addition, suppose that description is abbreviate | omitted about the structure which overlaps with 1st Embodiment, and demonstrates below centering on difference.

First, when printing is instructed by the user, first, the image formation control unit 15 reads necessary information. Specifically, the image formation control unit 15 reads the post-processing content and the number of copies for the first output setting JOB1, and the number of the post-processing content for the second output setting JOB2. Then, the image formation control unit 15 determines an operation pattern based on the following post-processing parameters (1) to (5).
(1) Time required for printing the print output (print time) Tp
(2) Time Tf1 required for post-processing corresponding to the first output setting JOB1
(3) Time Tf2 required for post-processing corresponding to the second output setting JOB2
(4) Number of post-processing copies U1 corresponding to the first output setting JOB1
(5) The number of post-processing copies U2 corresponding to the second output setting JOB2

  The image forming control unit 15 then performs post-processing devices 20 to 50 corresponding to the first output setting JOB1 and post-processing devices 20 to 50 corresponding to the second output setting JOB2 for each print output based on the operation pattern. Allocate print output to either Here, the operation pattern defines which of the post-processing for the first output setting JOB1 and the post-processing for the second output setting JOB2 is executed for each print output. This operation pattern is set from the viewpoint of shortening the time required to complete the processing related to a single print command.

  Hereinafter, operation patterns set in accordance with various post-processing parameters will be described.

<First operation pattern>
FIG. 5 is an explanatory diagram for explaining the operation concept of the first operation pattern in which two post-processing are executed in parallel. This first operation pattern is a suitable operation pattern when the relationship shown in the following equation is established for each post-processing parameter. Here, the first output setting JOB1 is set as a ring binding process, and the second output setting JOB2 is set as a stapling process.
(Formula 1)
Tp (for example, 4s) <Tf2 (for example, 5s) <Tf1 (for example, 12s)
(Formula 2)
U1 (for example, 3 parts) <U2 (for example, 5 parts)

  First, the image formation control unit 15 starts printing the first print output (timing t11), and the first print output is obtained after a predetermined print time (4 s) has elapsed. The image formation control unit 15 distributes the first print output to post-processing (ring bind processing) having a longer post-processing time of the first output setting JOB1 or the second output setting JOB2. As a result, the ring binding process is started by the post-processing device 20 for the first print output (timing t12).

  Next, the image formation control unit 15 starts printing the second print output (timing t12), and after the predetermined print time (4 s) has passed, the second print output is obtained. The image formation control unit 15 sorts the second print output into post-processing (staple processing) different from the first print output. As a result, the stapling process is started by the post-processing device 50 for the second print output (timing t13).

  The image formation control unit 15 determines the pattern of post-processing to be executed by the following determination method for the third and subsequent print outputs. That is, the image formation control unit 15 determines whether or not the ring binding process is being executed based on the end timing of the print output to be used for the next post-processing. When the ring binding process is being executed, the image formation control unit 15 distributes the print output to the staple process, and performs the above-described determination for the next print output. On the other hand, when the ring binding process is being executed, the image formation control unit 15 distributes the print output to the ring bind process, and then distributes the next print output to the staple process, and then performs the subsequent printing. The above-described determination is performed on the output.

  Specifically, when printing of the third set of print outputs starts from the print end timing t13 of the second set of print outputs, the image formation control unit 15 uses the print end timing of the third set of print outputs as a reference. Next, it is determined whether or not the ring binding process has been completed.

  If the ring binding process has not ended, the image forming control unit 15 starts printing the third set of print outputs after a predetermined waiting time has elapsed (timing t14). This waiting time is adjusted so that the end timing of the currently executed stapling process is synchronized with the print end timing of the third print output. Then, when the third print output is obtained after the predetermined print time (4 s) has elapsed, the image formation control unit 15 distributes the third print output to the stapling process. Thus, the stapling process is started by the post-processing device 50 for the third print output (timing t15).

  Next, when printing of the fourth set of print outputs starts from the end timing t15 of the third set of print outputs, the image formation control unit 15 uses the print end timing of the fourth set of print outputs as a reference. It is determined whether or not the binding process has been completed. When the ring binding process has been completed, the image formation control unit 15 starts the fourth set of print outputs in synchronization with the print end timing of the third set of print outputs (timing t15).

  When the image formation control unit 15 obtains the fourth print output after a predetermined print time (4 s) has elapsed, the image formation control unit 15 distributes the fourth copy print output to the ring binding process. As a result, the ring binding process is started by the post-processing device 20 for the fourth print output.

  The same processing is continued for the fifth and subsequent print outputs, and print output and post-processing corresponding to all the specified number of copies are executed. Further, when the number of copies to which the post-processing corresponding to one of the output settings JOB1 and JOB2 is applied reaches the set number of copies, the post-processing corresponding to the remaining output settings JOB1 and JOB2 is set to the number of copies set. It runs continuously until it reaches.

  Here, FIG. 5B is an explanatory diagram of an operation pattern to be compared with the first operation pattern. In the operation pattern shown in FIG. 5B, the image formation control unit 15 is set to distribute the print output so that the ring bind process corresponding to the first output setting JOB1 is continuously executed. (Corresponding to the second operation pattern described later). In the method shown in FIG. 5B, the total processing time for executing the above-described post-processing parameters is 47 seconds, whereas in the method shown in the first operation pattern, the total processing time is 42 seconds. can do.

<Second operation pattern>
FIG. 6 is an explanatory diagram for explaining an operation concept of a second operation pattern in which two post-processing are executed in parallel at the same time. This second operation pattern is a suitable operation pattern when the relationship shown in the following equation is established for each post-processing parameter. Similar to the first operation pattern, the first output setting JOB1 is set as ring bind processing, and the second output setting JOB2 is set as staple processing.
(Formula 3)
Tp (for example, 4s) <Tf2 (for example, 5s) <Tf1 (for example, 12s)
(Formula 4)
U1 (for example, 3 parts)> U2 (for example, 2 parts)

  First, the image formation control unit 15 starts printing the first print output (timing t21), and after the predetermined print time (4 s) has elapsed, the first print output is obtained. The image formation control unit 15 distributes the first print output to post-processing (ring bind processing) having a longer post-processing time of the first output setting JOB1 or the second output setting JOB2. Accordingly, the ring binding process is started by the post-processing device 20 for the first print output (timing t22).

  Next, the image formation control unit 15 starts printing the second print output (timing t22), and after the predetermined print time (4 s) has elapsed, the second print output is obtained. The image formation control unit 15 sorts the second print output into post-processing (staple processing) different from the first print output. Thereby, the stapling process is started by the post-processing device 50 for the second print output (timing t23).

  The image formation control unit 15 determines the pattern of post-processing to be executed by the following determination method for the third and subsequent print outputs. That is, the image formation control unit 15 distributes the print output to the staple process so that the ring bind process corresponding to the first output setting JOB1 is continuously performed. At this time, the image formation control unit 15 sets a waiting time so that the print end timing of the print output is synchronized with the start timing of the ring bind process, and delays the print start timing of the print output. Further, the image forming control unit 15 distributes the print output to the staple process so that the staple process is performed each time during the execution period of the ring bind process.

  Specifically, the image formation control unit 15 starts printing the third print output after a predetermined waiting time has elapsed from timing t23 (timing t24). This waiting time is adjusted so that the end timing of the currently executed ring bind process is synchronized with the print end timing of the third print output. Then, when the third print output is obtained after the predetermined print time (4 s) has passed, the image formation control unit 15 distributes the third print output to the ring binding process. As a result, the ring binding process is started by the post-processing device 20 for the third print output (timing t25).

  The same processing is continued for the fourth and subsequent print outputs, and print output and post-processing corresponding to all the specified number of copies are executed. Further, when the number of copies to which the post-processing corresponding to one of the output settings JOB1 and JOB2 is applied reaches the set number of copies, the post-processing corresponding to the remaining output settings JOB1 and JOB2 is set to the number of copies set. It runs continuously until it reaches.

  Here, FIG. 6B is an explanatory diagram of an operation pattern to be compared with the second operation pattern. In the operation pattern shown in FIG. 5B, the image formation control unit 15 is set so as to distribute the print output from the same viewpoint as the first operation pattern. In the method shown in FIG. 5B, the total processing time for executing the above-described post-processing parameters is 41 seconds, whereas in the method shown in the second operation pattern, the total processing time is 40 seconds. can do.

<Third operation pattern>
FIG. 7 is an explanatory diagram for explaining an operation concept of a third operation pattern in which two post-processing are executed simultaneously in parallel. This third operation pattern is a suitable operation pattern when the relationship shown in the following equation is established for each post-processing parameter. Here, the first output setting JOB1 is set as a case binding process, and the second output setting JOB2 is set as a stapling process.
(Formula 5)
Tf2 (for example, 5 s) <Tp (for example, 6 s) <Tf1 (for example, 20 s)
(Formula 6)
U1 (for example, 2 parts) <U2 (for example, 6 parts)

  First, the image formation control unit 15 starts printing the first print output (timing t31), and after the predetermined print time (5 s) has passed, the first print output is obtained. The image formation control unit 15 distributes the first print output to post-processing (case binding processing) having a longer post-processing time of the first output setting JOB1 or the second output setting JOB2. Thus, the case binding process is started by the post-processing device 40 for the first print output (timing t32).

  Next, the image formation control unit 15 starts printing the second print output (timing t32), and after the predetermined print time (5 s) has passed, the second print output is obtained. The image formation control unit 15 sorts the second print output into post-processing (staple processing) different from the first print output. As a result, the stapling process is started by the post-processing device 50 for the second print output (timing t33).

  The image formation control unit 15 determines the pattern of post-processing to be executed by the following determination method for the third and subsequent print outputs. In other words, the image forming control unit 15 determines whether or not the case binding process is being executed based on the end timing of the print output to be used for the next post-processing. When the case binding process is being executed, the image formation control unit 15 distributes the print output to the staple process, and performs the above-described determination for the next print output. On the other hand, when the case binding process is being executed, the image forming control unit 15 distributes the print output to the case binding process, then distributes the next print output to the staple process, and then performs the subsequent printing. The above-described determination is performed on the output.

  Specifically, the image formation control unit 15 starts printing the print output at timing t33, distributes the print output to the staple process, starts printing the print output at timing t34, and sets the print output to the staple process. Distribute. As a result, the stapling process is started by the post-processing device 50 for the third and fourth copies of the printed output (timing t34, t35). Then, the image formation control unit 15 starts printing the print output at timing t35, and distributes the print output to the case binding process. Thus, the case binding process is started by the post-processing device 40 for the fifth print output (timing t36).

  The same processing is continued for the sixth and subsequent print outputs, and print output and post-processing corresponding to all the specified number of copies are executed. Further, when the number of copies to which the post-processing corresponding to one of the output settings JOB1 and JOB2 is applied reaches the set number of copies, the post-processing corresponding to the remaining output settings JOB1 and JOB2 is set to the number of copies set. It runs continuously until it reaches.

  Here, FIG. 7B is an explanatory diagram of an operation pattern to be compared with the third operation pattern. As shown in the second operation pattern, the operation pattern shown in FIG. 5B is such that the image forming control unit 15 continuously executes the case binding process corresponding to the first output setting JOB1. The print output is set to be distributed. In the method shown in FIG. 5B, the total processing time is 55 seconds, whereas in the method shown in the third operation pattern, the total processing time can be 53 seconds.

<Fourth operation pattern>
FIG. 8 is an explanatory diagram for explaining the operation concept of the fourth operation pattern in which two post-processing are executed in parallel. This fourth operation pattern is a suitable operation pattern when the relationship shown in the following equation is established for each post-processing parameter. Here, the first output setting JOB1 is set as a case binding process, and the second output setting JOB2 is set as a stapling process.
(Formula 7)
Tf2 (5 s) <Tp (6 s) <Tf1 (20 s)
(Formula 8)
U1 (4 parts)> U2 (3 parts)

  The image forming control unit 15 distributes the post binding processing and stapling processing to each post processing so that the case binding processing and the stapling processing are executed alternately. Note that the first print output is preferentially distributed to post-processing with a long post-processing time.

  Specifically, the image formation control unit 15 starts printing the print output at timing t41, and distributes the print output to the case binding process. Thus, the case binding process is started by the post-processing device 40 for the first print output (timing t42). Next, the image formation control unit 15 starts printing of the print output at timing t42, and distributes the print output to the staple processing. Thus, the stapling process is started by the post-processing device 50 for the second print output (timing t43). Further, the image forming control unit 15 starts printing the third print output after a predetermined waiting time has elapsed from the timing t43 (timing t44). This waiting time is adjusted so that the end timing of the case binding process currently being executed is synchronized with the print end timing of the third print output.

  The same processing is continued for the third and subsequent print outputs, and print output and post-processing corresponding to all the specified number of copies are executed. Further, when the number of copies to which the post-processing corresponding to one of the output settings JOB1 and JOB2 is applied reaches the set number of copies, the post-processing corresponding to the remaining output settings JOB1 and JOB2 is set to the number of copies set. It runs continuously until it reaches.

Here, FIG. 8B is an explanatory diagram of an operation pattern to be compared with the fourth operation pattern. In the operation pattern shown in FIG. 5B, the image formation control unit 15 is set so as to distribute the print output from the same viewpoint as the first operation pattern. In the method shown in FIG. 5B, the total processing time for executing the above-described post-processing parameters is 90 seconds, whereas in the method shown in the fourth operation pattern, the total processing time is 86 seconds. can do.
<Fifth operation pattern>
FIG. 8 is an explanatory diagram for explaining the operation concept of the fifth operation pattern in which two post-processing are executed simultaneously in parallel. This fifth operation pattern is a suitable operation pattern when the relationship shown in the following equation is established for each post-processing parameter. Here, the first output setting JOB1 is the saddle stitching process, and the second output setting JOB2 is the stapling process.
(Formula 9)
Tf2 (5 s) <Tf1 (10 s) <Tp (12 s)
(Formula 10)
U1 (2 parts) <U2 (3 parts)

  The image formation control unit 15 distributes the print output to the stapling process so that the saddle stitching process corresponding to the first output setting JOB1 is preferentially performed. Then, the image forming control unit 15 distributes the print output to the staple process so that the staple process corresponding to the second output setting JOB2 is performed after the first output setting JOB1 is completed.

  Specifically, the image formation control unit 15 starts printing of the print output at timing t51, distributes the print output to the saddle stitching process, starts printing of the print output at timing t52, and sends the print output to the saddle stitching. Distribute to processing. Thus, the saddle stitching process is started by the post-processing device 30 for the first and second copy print outputs (timing t52, t53). Next, the image formation control unit 15 starts printing the print output at timing t53, and distributes the print output to the staple processing. Thus, the stapling process is started by the post-processing device 50 for the third print output (timing t54). The same processing is continued for the fourth and subsequent print outputs, and print output and post-processing corresponding to all the specified number of copies are executed.

  Here, FIG. 9B is an explanatory diagram of an operation pattern to be compared with the fifth operation pattern. In the operation pattern shown in FIG. 5B, the image formation control unit 15 distributes the print output so that the staple processing corresponding to the second output setting JOB2 is preferentially performed, and then the first output is performed. The print output is distributed so that the saddle stitching process corresponding to the output setting JOB1 is performed. In the method shown in FIG. 5B, the total processing time is 70 seconds, whereas in the method shown in the fifth operation pattern, the total processing time can be 65 seconds.

  As described above, the image forming system according to the present embodiment acquires a print command from the user, and prints the print output based on the print command to the post-processing devices 20 to 50 for the first print output JOB1 and the second print output. The image forming control unit 15 is further provided as a control unit that determines an operation pattern that defines which of the post-processing devices 20 to 50 for JOB2 is to be distributed. According to such formation, post-processing can be executed in an optimal order by distributing the print output according to the operation pattern, so that the productivity of the entire system can be improved.

  Further, as shown in the first to fifth operation patterns described above, the image formation control unit 15 determines the operation pattern on condition that the total processing time required for a single print command is short. According to this configuration, it is possible to determine how to distribute the print output so that the total processing time is shortened, so that the total processing time can be shortened. Thus, by determining an appropriate operation pattern, the productivity of the entire system can be improved.

  The image forming control unit 15 also includes the number of copies to which the first post-processing (post-processing of print output JOB1) is applied and the number of copies to which the second post-processing (post-processing of print output JOB2) is applied among the designated number of copies. Are individually set, the operation pattern is determined based on the number of copies to which each post-processing is applied. Since the combination of operation patterns with a short total processing time is related to the number of individual post-processing copies, a desired operation pattern can be appropriately determined by considering these parameters.

  The image formation control unit 15 further considers the time required for printing the print output by the image forming apparatus 10, the time required for the first post-processing, and the time required for the second post-processing in determining the operation pattern. Yes. Since the combination of operation patterns that provide a short total processing time is related to the time required for individual post-processing and the printing time, a desired operation pattern can be appropriately determined by considering these parameters.

  Further, the image forming control unit 15 uses the post-processing devices 20 to 50 having a longer post-processing time as the distribution destination of the first print output. As a result, an operation pattern having a short total processing time can be appropriately determined.

  In the above-described embodiment, the method in which the two post-processing devices 20 to 50 perform the post-processing in parallel is illustrated, but three or more post-processing devices 20 to 50 perform the post-processing in parallel. It may be a technique.

  In the above-described embodiment, the method of applying different post-processing in units of the number of copies has been described. However, the paper group to which the first post-processing is applied among a plurality of papers included in a single print output The paper group to which the second post-processing is applied may be individually set. For example, the stapling process is applied to 1 to 8 sheets and the ring binding process is applied to 9 to 10 sheets of the print output having a total number of 10 sheets.

  The image forming control unit 15 included in the image forming apparatus 10 has a function as a control unit that controls the system, but any one of the post processing devices 20 to 50 has a post processing control unit 25 to 55. The function as the control unit may be performed.

  The image forming system according to the embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications are possible within the scope of the invention. .

DESCRIPTION OF SYMBOLS 10 Image forming apparatus 11 Document reading apparatus 12 Image reading control part 13 Image forming part 14 Paper conveyance part 15 Image formation control part 16 Operation display part 17 Communication part 20 Post-processing apparatus 21 Ring binding part 22 Paper conveyance part 23 Common conveyance part 25 Post-processing control unit 26 Communication unit 30 Post-processing device 31 Saddle stitching unit 32 Paper transport unit 33 Common transport unit 35 Post-processing control unit 36 Communication unit 40 Post-processing device 41 Case binding unit 42 Paper transport unit 43 Common transport unit 45 Post-processing Control unit 46 Communication unit 50 Post-processing device 51 Stapling unit 52 Paper conveyance unit 53 Common conveyance unit 55 Post-processing control unit 56 Communication unit

Claims (8)

In an image forming system configured by connecting a plurality of devices to each other,
An image forming apparatus that outputs a specified number of print outputs corresponding to the same image data in response to execution of a single print command;
A first post-processing device that is disposed on the rear side of the image forming apparatus and capable of executing a first post-processing for print output from the image forming apparatus;
A second post-processing device that is disposed on the rear stage side of the first post-processing device and that can execute a second post-processing for print output from the image forming device;
When the target for applying the first post-processing and the target for applying the second post-processing are individually set as the contents of the post-processing set in the single print command, the first An image forming system in which a post-processing device and the second post-processing device execute individual post-processing in parallel ,
A control unit that determines an operation pattern that defines which of the first post-processing device and the second post-processing device the print output output by the image forming apparatus is distributed to;
The controller is
The single print command is acquired from a user, and the operation pattern for executing the single print command is determined from a plurality of the operation patterns based on the single print command. Image forming system.   The control unit determines the operation pattern for executing the single print command from a plurality of the operation patterns based on a post-processing parameter for post-processing set in the single print command. The image forming system according to claim 1.   The first post-processing apparatus commonly conveys the print output supplied from the image forming apparatus to the second post-processing apparatus side, bypassing a post-processing unit that executes the first post-processing. The image forming system according to claim 1, further comprising a transport unit. Wherein, on condition that the total processing time required for said single print command is short, any one of claims 1 to 3, characterized in that determining the operation pattern from the plurality of operation patterns The image forming system described in 1. When the number of copies to which the first post-processing is applied and the number of copies to which the second post-processing is applied are individually set in the designated number of copies, the control unit sets the number of copies to which each post-processing is applied. The image forming system according to claim 1, wherein the operation pattern is determined from a plurality of the operation patterns. The control unit determines the operation pattern from a plurality of the operation patterns, the time required for printing the print output by the image forming apparatus, the time required for the first post-processing by the first post-processing apparatus, and the 6. The image forming system according to claim 5, wherein a time required for the second post-processing by the second post-processing device is taken into consideration.   2. The control unit according to claim 1, wherein a distribution destination of the first print output is an apparatus having a longer post-processing time of the first post-processing apparatus or the second post-processing apparatus. 6. The image forming system described in 6. The control unit individually designates a paper group to which the first post-processing is applied and a paper group to which the second post-processing is applied among a plurality of papers included in a single print output. 2. The image forming system according to claim 1 , wherein the operation pattern is determined from a plurality of the operation patterns based on a sheet group to which each post-processing is applied.

Images