JP6165066B2 - Image forming apparatus and image forming method - Google Patents

Description

  The present invention relates to an image forming apparatus and an image forming method, and more particularly, to an image forming apparatus and an image forming method capable of reducing a waiting time required for calibration of image formation.

  For example, JP-A-10-114128 (Patent Document 1), JP-A 2006-157804 (Patent Document 2), JP-A 2010-72059 (Patent Document 3), JP-A 2010-134129 (Patent Document). Document 4), Japanese Patent Application Laid-Open No. 2005-131809 (Patent Document 5), Japanese Patent Application Laid-Open No. 2009-265504 (Patent Document 6), Japanese Patent Application Laid-Open No. 2006-215214 (Patent Document 7), Japanese Patent Application Laid-Open No. 2004-252173. As shown in (Patent Document 8), there are many techniques for adjusting the execution timing of calibration for image formation in an image forming apparatus such as a printer, a copier, or a multifunction peripheral.

Japanese Patent Laid-Open No. 10-114128 JP 2006-157804 A JP 2010-72059 A JP 2010-134129 A JP 2005-131809 A JP 2009-265504 A JP 2006-215214 A JP 2004-252173 A

  However, in the technique described in Patent Documents 1-8 described above, image formation calibration is automatically executed based on the amount of change in parameters required for image formation. Therefore, there is a possibility that the execution timing of the calibration is an inconvenient timing for the user, which may cause a wasteful waiting time for the user.

  In recent years, for example, in a predetermined company, office, etc., a form in which a plurality of users share and use one image forming apparatus is increasing. In this mode, the image forming apparatus accepts a plurality of various jobs and executes them sequentially. If it is necessary to execute calibration of image formation in the job, the execution of the job is executed. Sometimes the calibration is performed. Then, the execution of a job subsequent to the job is delayed, and there is a high possibility that the user will have a useless waiting time.

  SUMMARY An advantage of some aspects of the invention is that it provides an image forming apparatus and an image forming method capable of reducing a waiting time required for calibration of image formation. .

  In order to solve the above-described problems and achieve the object, an image forming apparatus that accepts and executes a plurality of jobs, and employs the following configuration.

That is, according to the present invention, when a plurality of jobs are received, a calibration-necessary job that requires calibration of predetermined patch formation, image density, registry, and color misregistration using the image forming unit is selected from the plurality of jobs. It is determined whether or not there is a timing for executing calibration for image formation at the present time, and as a result of the determination, there is a job that uses the image forming unit, and at the present time, When it is determined that it is time to execute the calibration for the image formation, a determination unit that determines that the calibration-necessary job exists, and, as a result of the determination, whether the calibration-necessary job is identified and the execution order is the last it is determined, if not the last turn, carry the execution order of the calibration unnecessary job Change earlier order than configuration required job, start changing means for notifying the execution order of the job that changes in response to the notice of execution order of the job, the execution of the calibration start the image forming unit And an execution unit that starts in parallel the execution of a plurality of calibration-unnecessary jobs whose job execution order has been changed, and the determination unit is configured to execute a predetermined job when the image forming apparatus is executing a predetermined job. In addition, when a new job is received, it is determined whether or not the calibration-required job exists among a plurality of jobs added with the new job and excluding the job being executed. characterized that you further determination.

  The present invention can be provided as an image forming method of an image forming apparatus that receives and executes a plurality of jobs.

That is, according to the present invention, when a plurality of jobs are received, a calibration-necessary job that requires calibration of predetermined patch formation, image density, registry, and color misregistration using the image forming unit is selected from the plurality of jobs. It is determined whether or not there is a timing for executing calibration for image formation at the present time, and as a result of the determination, there is a job that uses the image forming unit, and at the present time, If it is determined that it is time to execute the calibration for the image formation, a determination step for determining that the calibration-necessary job exists, and, as a result of the determination, whether the calibration-necessary job is specified and whether the execution order is the last are determined. determines, key if not the last order, the execution order of the calibration required job Change earlier order than calibration required job, and changing step of notifying an execution order of the job change, upon receiving the notification of execution order of the job, the execution of the calibration start the image forming unit And an execution step of simultaneously starting execution of a plurality of calibration-unnecessary jobs whose job execution order has been changed, and the determination step includes the image forming apparatus being executing a predetermined job. When the new job is accepted, whether or not the calibration-required job exists among the plurality of jobs added with the new job and excluding the job being executed further determination be characterized Rukoto a. Even with such a configuration, the same effects as described above can be obtained.

  Further, the present invention can be provided as a program for causing a computer to circulate individually via a telecommunication line or the like. In this case, the central processing unit (CPU) realizes the control operation in cooperation with each circuit other than the CPU according to the program of the present invention. Each means realized by using the program and the CPU can also be configured by using dedicated hardware. The program can also be distributed in a state where it is recorded on a computer-readable recording medium such as a CD-ROM.

  According to the image forming apparatus and the image forming method of the present invention, it is possible to reduce the waiting time required for image formation calibration.

1 is a conceptual diagram showing an overall internal configuration of an image forming apparatus according to the present invention. It is a conceptual diagram which shows the whole structure of the operation part which concerns on this invention. It is a figure which shows the structure of the control system hardware of the multifunctional device which concerns on this invention. FIG. 2 is a functional block diagram of a multifunction machine according to an embodiment of the present invention. It is a flowchart for showing the execution procedure of the embodiment of the present invention. FIG. 6A illustrates an example of a state in which the job execution order of a plurality of jobs according to the embodiment of the present invention is changed, and FIG. 6B illustrates a state in which jobs and calibration according to the embodiment of the present invention are executed in parallel. FIG. 7 illustrates an example (FIG. 6B).

  Hereinafter, an image forming apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: The thing of the character which limits the technical scope of this invention is not. Moreover, the alphabet S added before the number in a flowchart means a step.

<Image forming apparatus>
Hereinafter, an image forming apparatus according to an embodiment of the present invention will be described. FIG. 1 is a conceptual diagram showing the overall internal configuration of an image forming apparatus according to the present invention. However, details of each part not directly related to the present invention are omitted.

  The image forming apparatus of the present invention corresponds to, for example, a printer, a single scanner, or a multi-function machine equipped with a printer, a copy, a scanner, a fax machine, etc., and includes a copy function, a scanner function, a facsimile function, a printer function, and a memory box. It functions as an image forming apparatus having functions and the like.

  The operation of the MFP 100 (MFP: Multi Function Peripheral) when using the copy function will be briefly described below.

  First, the user turns on the power of the multifunction device 100, places the document O on the document table 101 or the automatic document feeder 101a provided on the upper surface of the multifunction device 100, and operates the setting of the copy function. Input from the unit 102. The operation unit 102 displays an operation screen (such as an initial screen) related to the copy function provided by the multifunction peripheral 100, and a plurality of setting item keys related to the copy function are displayed in a selectable manner. The user inputs setting conditions related to the copy function via the operation screen. When the user completes the input of the setting conditions, the user presses the start key provided in the operation unit 102 to cause the multifunction peripheral 100 to start the copy function process.

  When the multifunction peripheral 100 starts processing for the copy function, the light emitted from the light source 104 is reflected on the document O placed on the document table 101 in the image reading unit 103. When the document O is placed on the automatic document feeder 101a, the automatic document feeder 101a conveys the document O one by one to the image reading position of the image reading unit 103, and the image The light source 104 irradiates the reading position with light, and the light is reflected by the document O.

  The reflected light is guided to the image sensor 108 by the mirrors 105, 106, and 107. The guided light is photoelectrically converted by the image sensor 108 and subjected to basic correction processing, image quality processing, compression processing, and the like, and image data corresponding to the document O is generated.

  An image forming unit 109 is a drive unit that transfers the image data as a toner image. The image forming unit 109 is provided with a photosensitive drum 110. The photosensitive drum 110 rotates in a predetermined direction at a constant speed, and around the charger drum 111, the exposure unit 112, the developing unit 113, the transfer unit 114, the cleaning unit 115, and the like in that order from the upstream side in the rotation direction. Is arranged.

  The charger 111 uniformly charges the surface of the photosensitive drum 110. The exposure unit 112 irradiates the charged surface of the photosensitive drum 110 with a laser based on the image data to form an electrostatic latent image. The developer 113 forms a toner image by attaching toner to the conveyed electrostatic latent image. The formed toner image is transferred to a recording medium (for example, a sheet or paper) by the transfer device 114. The cleaning unit 115 removes excess toner left on the surface of the photosensitive drum 110. A series of these processes is executed by rotating the photosensitive drum 110.

  The paper P is conveyed from a plurality of paper feed cassettes 116 provided in the multifunction machine 100. When transported, the paper P is pulled out of any one of the paper feed cassettes 116 by a pickup roller 117 to the transport path. Each of the paper feed cassettes 116 stores paper P of different paper types, and the paper P is fed based on the setting relating to the setting conditions. The paper feed cassette 116 is mounted in the corresponding cassette storage portion 116a.

  The paper P drawn out to the transport path is sent between the photosensitive drum 110 and the transfer device 114 by the transport roller 118 and the registration roller 119. When the paper P is fed, the toner image is transferred to the paper P by the transfer device 114 and conveyed to the fixing device 120. Note that the paper P transported to the transport roller 118 may be transported from the manual feed tray 121 provided in the multifunction peripheral 100.

  When the paper P on which the toner image has been transferred passes between a heating roller 122 and a pressure roller 123 provided in the fixing device 120, heat and pressure are applied to the toner image, and the visible image becomes a paper P. To be established. The heat amount of the heating roller 122 is optimally set according to the paper type, and the fixing is performed appropriately. The visible image is fixed on the paper P, the image formation is completed, and the paper P on which the visible image is fixed is conveyed to the folding device 124 via the fixing device 120.

  The conveyed paper P is subjected to folding processing by the folding device 124 in accordance with the setting conditions set by the user. When the folding process is not input, the paper P only passes through the folding device 124.

  When the user inputs post-processing (for example, stapling, punching, bookbinding, etc.) as the setting condition, the passed paper P is conveyed to the bookbinding apparatus 125 and post-processing is executed. Among the post-processing, for example, in the case of bookbinding, the bookbinding apparatus 125 performs punching on each of a plurality of sheets P by a punching unit (not shown), and staples all the sheets P by a stapling unit (not shown). Apply processing. The sheet P or the sheet bundle on which the post-processing is performed is stacked and stored on the sheet discharge tray 126 of the bookbinding apparatus 125. The folding device 124 and the bookbinding device 125 are collectively referred to as a post-processing device (finisher).

  Through the above procedure, the multifunction peripheral 100 provides a copy function to the user.

  FIG. 2 is a conceptual diagram showing the overall configuration of the operation unit according to the present invention. The user uses the operation unit 102 to input setting conditions for image formation as described above, and to confirm the input setting conditions. When the setting conditions are input, a touch panel 201 (operation panel), a touch pen 202, and operation keys 203 provided in the operation unit 102 are used.

  The touch panel 201 has both a function for inputting setting conditions and a function for displaying the setting conditions. That is, by pressing a key in the screen displayed on the touch panel 201, a setting condition corresponding to the pressed key is input.

  A display unit (not shown) such as an LCD (Liquid Crystal Display) is provided on the back surface of the touch panel 201, and the display unit displays an operation screen such as the initial screen, for example. A touch pen 202 is provided in the vicinity of the touch panel 201. When the user brings the tip of the touch pen 202 into contact with the touch panel 201, a sensor provided below the touch panel 201 detects the touch destination.

  Further, a predetermined number of operation keys 203 are provided in the vicinity of the touch panel 201, and for example, a ten key 204, a start key 205, a clear key 206, a stop key 207, a reset key 208, and a power key 209 are provided.

  Next, the configuration of the control system hardware of the multifunction peripheral 100 will be described with reference to FIG. FIG. 3 is a diagram showing a configuration of control system hardware of the multifunction peripheral according to the present invention. However, details of each part not directly related to the present invention are omitted.

  The control circuit of the MFP 100 includes a CPU (Central Processing Unit) 301, a ROM (Read Only Memory) 302, a RAM (Random Access Memory) 303, an HDD (Hard Disk Drive) 304, and a driver 305 corresponding to each driving unit. They are connected by a bus 306. The CPU 301 uses, for example, the RAM 303 as a work area, executes a program stored in the ROM 302, the HDD 304, and the like, and receives data and instructions from the driver 305 and the operation unit 102 (not shown) based on the execution result. The operation of each drive unit shown in FIG. 1 is controlled. Also, each means (shown in FIG. 4) described later other than the above-described drive unit is realized by the CPU 301 executing a program.

<Embodiment of the present invention>
Next, the configuration and execution procedure according to the embodiment of the present invention will be described with reference to FIGS. 4 and 5. FIG. 4 is a functional block diagram of the multifunction machine according to the embodiment of the present invention. FIG. 5 is a flowchart for showing the execution procedure of the embodiment of the present invention.

  First, when the user (user A) places the document O on the document table 101 and turns on the power of the multifunction peripheral 100, the job accepting unit 401 of the multifunction peripheral 100 is activated and the operation screen is displayed on the touch panel 201. Display and start accepting jobs.

  Here, the job means a function that can be provided by the multi-function peripheral 100. For example, the job corresponds to a copy job corresponding to the copy function, a scan job corresponding to the scanner function, a send job corresponding to the facsimile function, and a printer function. Examples include print jobs and box jobs corresponding to the memory box function.

  In addition, the job receiving unit 401 can receive a plurality of jobs. For example, it is possible to accept a plurality of jobs via an operation on the operation screen of the user A, or accept a plurality of jobs from a terminal device via a network.

  Therefore, when the user A operates the operation screen, for example, inputs the setting condition of the first send job (Send) for transmitting the image data of the document O to a predetermined transmission destination, and presses the start key 205. The job reception unit 401 receives the first send job (Send).

  Here, when the job accepting unit 401 accepts the first send job (Send), for example, the user B transmits a second send job (Send) at the terminal device via the network. Assume that user C transmits a print job (Print) at the terminal device, and user D transmits a box job (Box) at the terminal device. In this case, the job receiving unit 401 receives a plurality of jobs (FIG. 5: S101).

  Note that the case where the job receiving unit 401 receives a plurality of jobs includes a case where a plurality of jobs are received substantially simultaneously and a case where a plurality of jobs are sequentially received within a predetermined period set in advance. Normally, when a plurality of jobs are received, the job receiving unit 401 temporarily stores the contents of each job in a predetermined memory in the order in which the jobs are received. Thus, normally, the order in which jobs are received corresponds to the job execution order, and a plurality of jobs are executed one by one in accordance with the job execution order.

  When the job accepting unit 401 accepts a plurality of jobs, the job accepting unit 401 notifies the judging unit 402 accordingly. Upon receiving the notification, the determination unit 402 determines whether there is a calibration-required job that requires image formation (printing) calibration among the plurality of jobs (FIG. 5: S102).

  Here, the calibration for image formation means calibration executed by starting the image forming unit 109 (image forming module) of the multifunction peripheral 100. For example, calibration for forming a predetermined patch, image density Calibration, resist calibration, color shift calibration, etc. can be mentioned.

  In addition, the determination unit 402 may determine any method for determining whether or not the calibration-necessary job exists, for example, as follows.

  First, as shown in FIG. 6A, the determination unit 402 refers to a plurality of jobs 600 received at the present time, and among the plurality of jobs 600, whether there is a job that uses the image forming unit 109 or not. Determine whether.

  Here, in the above description, the plurality of jobs 600 are a first send job, a second send job, a print job, and a box job, and are normally executed in this order. The determination unit 402 determines that there is a job using the image forming unit 109 when referring to the print job 601 among the jobs.

  Next, the determination unit 402 refers to information related to the image forming unit 109, and determines whether or not it is time to execute calibration for image formation.

  The timing for executing the calibration for image formation is, for example, the timing for starting the image forming unit 109 for the first time after the MFP 100 is started, and the cumulative number of printed images formed using the image forming unit 109 exceeds a predetermined number. The timing at which the integrated printing rate formed by using the image forming unit 109 exceeds a predetermined value, the timing at which the image forming unit 109 is started only after the toner of the image forming unit 109 is replenished, and the like can be given. .

  Since the MFP 100 has been activated earlier, the determination unit 402 determines that the current time is the timing for executing the calibration of the image formation.

  As described above, if the determination unit 402 determines that there is a job that uses the image forming unit 109 and that the current timing is the timing for executing the calibration of the image formation, the job that requires calibration exists. A determination is made (FIG. 5: S102 YES), and the change means 403 is notified accordingly. Upon receiving the notification, the changing unit 403 changes the job execution order of calibration-unnecessary jobs (jobs that do not affect the calibration) other than the calibration-necessary jobs to the previous order (FIG. 5: S103).

  Any method may be used as the method by which the changing unit 403 changes the job execution order of the calibration-unnecessary job to the previous order, for example, as follows.

  First, the changing unit 403 specifies the job execution order of the plurality of jobs 600. In FIG. 6A, the first send job 602 is the first, the second send job 603 is the second, the print job 601 is the third, and the box job 604 is the fourth.

  Here, the changing unit 403 identifies the print job 601 of the job requiring calibration, and determines whether or not the job execution order is the last order.

  As a result of the determination, since the print job 601 of the calibration-necessary job is the third and the last order is the fourth, if the job execution order of the calibration-necessary job is not the last order, the changing unit 403 Therefore, it is determined that the job execution order of the calibration-required job is not the last order, and the order of the box job 604 that is the calibration-unnecessary job in the last order and the order of the print job 601 that is the calibration-required job are determined. change. That is, the changing unit 403 sets the order of the print job 601 as the fourth order in the last order, and sets the order of the box job 604 as the third order. As a result, the job execution order of the calibration-unnecessary job is ahead of the job execution order of the calibration-necessary job, and the calibration-unnecessary job is preferentially executed.

  If the job execution order of the calibration-necessary job is the last order as a result of the determination, the job execution order of the calibration-necessary job is the last when the plurality of jobs 600 are already received. Because of the order, the changing unit 403 does nothing in particular.

  When the change unit 403 changes the job execution order of the calibration-unnecessary job to the previous order, the change unit 403 notifies the execution unit 404 of the change. Upon receiving the notification, the execution unit 404 starts the execution of the calibration (FIG. 5: S104) and starts the execution of a plurality of jobs whose job execution order has been changed in parallel (FIG. 5: S105). ).

  Any method may be used as the method by which the execution unit 404 starts the execution of the calibration and the execution of the plurality of jobs in parallel, for example, as follows.

  That is, since it is known that the execution unit 404 needs to execute the calibration, first, the image forming unit 109 of the multifunction peripheral 100 is activated to perform image formation as shown in FIG. The unit 405 is caused to execute image formation calibration according to a predetermined calibration condition. This eliminates the need for executing the calibration when the subsequent print job 601 is executed.

  Next, the execution unit 404 sequentially executes the plurality of jobs 600, but first, jobs that do not use the image forming unit 109, for example, a first send job 602, a second send job 603, and a box job. Therefore, in parallel with the activation of the image forming unit 109, the unit corresponding to each job (for example, a communication unit, a storage unit, etc.) is activated to cause the function providing unit 406 to execute the first send job 602. The second send job 603 and the box job 604 are sequentially executed.

  As shown in FIG. 6B, since the calibration is executed along with the execution of the calibration unnecessary job, the execution of the calibration is already completed when the print job 601 is executed. Will be.

  Conventionally, when a calibration-necessary job such as a print job 601 is executed, the multifunction peripheral 100 detects the necessity of executing the calibration and executes the calibration. Although the necessary job was executed, there was a problem that the waiting time of the user was prolonged.

  In the present invention, the calibration-required job is placed in a later order, the calibration-unnecessary job is executed first, and the calibration is executed in parallel therewith, thereby reducing the time required for the calibration. The unnecessary waiting time required for the calibration is eliminated over the unnecessary job. As a result, the user's use of the multifunction device 100 is prevented from being hindered, the effective use of each part of the multifunction device 100 is promoted, and the waiting time of the user, in particular, the waiting time of the user who has input the calibration required job is reduced as much as possible. It becomes possible to do.

  In particular, when the calibration is a plurality of calibrations executed when the image forming unit 109 is officially activated, the time required for the calibration is several minutes or more. Is more effective. In addition, for example, if the shared multifunction peripheral 100 that accepts a plurality of jobs substantially simultaneously and the multifunction peripheral 100 with a high operation rate, the present invention exhibits the effects of the present invention. Further, the present invention is particularly applicable to the multi-job execution multifunction peripheral 100 that executes a plurality of jobs one by one rather than the multi-job execution multifunction peripheral 100 that executes a plurality of jobs simultaneously. The effects of the present invention are exhibited.

  By the way, when the determination unit 402 determines in S102 that the calibration-necessary job does not exist, for example, there is no job that uses the image forming unit 109, or the image formation calibration is executed at the present time. If it is determined that it is not time to do so (FIG. 5: S102 NO), the determination unit 402 notifies the execution unit 404 to that effect. Upon receiving the notification, the execution unit 404 executes a plurality of jobs in accordance with the job execution order (FIG. 5: S105). In this case, it is not particularly necessary to change the job execution order of the jobs when a plurality of jobs are received. Therefore, the execution unit 404 executes each job to the image forming unit 405 and the function providing unit 406, respectively. I will let you. In this case, a normal job execution mode is set.

  As described above, according to the present invention, when a plurality of jobs are received, the determination unit 402 that determines whether or not there is a calibration-required job that requires calibration for image formation among the plurality of jobs, As a result of the determination, when the calibration-necessary job exists, the changing unit 403 for changing the job execution order of the calibration-unnecessary jobs other than the calibration-necessary job to the previous order, and the execution of the calibration are started. And execution means 404 for starting the execution of a plurality of jobs whose job execution order has been changed in parallel. Thereby, it is possible to reduce the waiting time required for calibration of image formation.

  In the embodiment of the present invention, the determination unit 402 is configured to perform determination when the job reception unit 401 receives a plurality of jobs. However, other configurations may be used. For example, when the job accepting unit 401 accepts a plurality of jobs and the multifunction peripheral 100 accepts a new job while the job is being executed, the determination unit 402 accepts the new job. In addition to the job, the determination may be further made. In this case, it goes without saying that the determination unit 402 sets a plurality of jobs excluding the job currently being executed as a determination target.

  In the embodiment of the present invention, the MFP 100 is configured to include each unit. However, a program that realizes each unit may be stored in a storage medium, and the storage medium may be provided. In this configuration, the multifunction device 100 reads the program, and the multifunction device 100 implements the respective units. In that case, the program itself read from the recording medium exhibits the effects of the present invention. Furthermore, it is possible to provide a method for storing the steps executed by each means in a hard disk. The same applies to the case where the multifunction peripheral 100 is a post-processing apparatus.

  As described above, the image forming apparatus and the image forming method according to the present invention are useful not only for multi-function machines but also for copiers, printers, multi-function machines with post-processing devices, and the like that execute a plurality of jobs. This is effective as an image forming apparatus and an image forming method capable of reducing the waiting time required for calibration.

100 MFP 401 Job Accepting Unit 402 Judging Unit 403 Changing Unit 404 Executing Unit 405 Image Forming Unit 406 Function Providing Unit

Claims (2)

An image forming apparatus that receives and executes a plurality of jobs,
When a plurality of jobs are received, it is determined whether or not there is a calibration-necessary job that requires calibration for predetermined patch formation, image density, registry, and color misregistration using the image forming unit . At the same time, it is determined whether or not it is time to execute calibration for image formation. As a result of the determination, there is a job that uses the image forming unit. If it is determined that it is time to execute the above, a determination unit that determines that the calibration-required job exists ;
As a result of the determination, the job requiring calibration is identified and it is determined whether or not the execution order is the last . Change means for changing and notifying the execution order of the changed job ;
Upon receiving notification of the execution order of the jobs, the image forming unit is activated to start execution of the calibration, and the execution of a plurality of calibration-unnecessary jobs whose job execution order has been changed is started in parallel. Execution means,
When the image forming apparatus is executing a predetermined job and the determination unit receives a new job, the determination unit adds the new job and removes the job being executed. An image forming apparatus that further determines whether or not the calibration-necessary job exists among the plurality of jobs . An image forming method of an image forming apparatus that receives and executes a plurality of jobs,
When a plurality of jobs are received, it is determined whether or not there is a calibration-necessary job that requires calibration for predetermined patch formation, image density, registry, and color misregistration using the image forming unit . At the same time, it is determined whether or not it is time to execute calibration for image formation. As a result of the determination, there is a job that uses the image forming unit. A determination step for determining that the calibration-required job exists ;
As a result of the determination, the job requiring calibration is identified and it is determined whether or not the execution order is the last . A change step for changing and notifying the execution order of the changed job ;
Upon receiving notification of the execution order of the jobs, the image forming unit is activated to start execution of the calibration, and the execution of a plurality of calibration-unnecessary jobs whose job execution order has been changed is started in parallel. Execution steps and
With
In the determination step, when a new job is accepted while the image forming apparatus is executing a predetermined job, the new job is added and the job being executed is excluded. An image forming method comprising: further determining whether or not the calibration-necessary job exists among the plurality of jobs .

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