JP2006191528A - Image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the operation efficiency of reserved job printing and to improve user's user-friendliness in an image forming apparatus having reserved copying function. <P>SOLUTION: In the image forming apparatus 100 capable of reserving a plurality of printing jobs, the suspended state retention time for retaining the suspended state of printing jobs is preset by an operation section 142. When a printing job during output operation has been suspended, a timing section 16 starts to measure the preset suspended state retention time. If the printing job having been suspended is not resumed even after the lapse of the suspended state retention time and there is a subsequent printable job, the order of the printing jobs is changed and the subsequent printing job is performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an image forming apparatus capable of reserving a plurality of print jobs.

  In recent years, an image forming apparatus having a reserved copy function is known. The reserved copy function is a function for setting a function for the next print job by an operation unit provided in the image forming apparatus, and reading a document of the next print job by a scanner. When finished, the next print job is automatically executed.

As such an image forming apparatus, there has conventionally been proposed a technique capable of registering a plurality of reserved copies, changing the execution order of reserved copies, canceling reserved copies, and changing copy conditions of reserved copies. In addition, when the print job currently being executed is completed, it is possible to print if there is no paper used for the print job and the function to check the presence of paper used for the next print job to be executed. There are also proposed image forming apparatuses having a function of confirming the presence or absence of other print jobs and a function of switching the order of reservation when there are other print jobs that can be printed (Patent Document 1 and Patent Document 2). reference).
JP 2000-31271 A JP 2001-203851 A

  In a conventional image forming apparatus having a reserved copy function, when a print job currently being output is stopped due to some factor (for example, no paper, paper size mismatch, etc.), the operation unit instructs to restart the stopped print job. If the print job is left as it is, the apparatus checks whether there is a print job that can be executed after the next job. If there is a print job that can be executed, the reservation order is changed and executed. In other words, it is configured to shift to the next job that can be automatically executed and execute it.

  However, in the conventional image forming apparatus, even if the interrupted print job is urgently executed first, a subsequent print job may be started against the user's intention. If the volume of the next job that can be executed is large, the operator will wait for a long time until the job is completed.

  An object of the present invention is to improve the operation efficiency of printing a plurality of reserved jobs and to execute a print job in consideration of the user's intention in an image forming apparatus having a reserved copy function.

In order to solve the above-described problem, an invention according to claim 1 is an image forming apparatus capable of reserving a plurality of print jobs.
A setting means for setting a stop state holding time for holding the stop state of the print job;
A timing unit that counts the stop state holding time set by the setting unit when the print job being output is stopped;
If the stopped print job cannot be restarted within the stop state holding time and there is a subsequent printable print job, the execution order of the print jobs is changed, and the subsequent printable print job And a control means for executing the above.

  According to a second aspect of the present invention, in the image forming apparatus according to the first aspect, the control unit can restart the stopped print job based on whether or not an operation has been performed on the image forming apparatus. It is characterized by determining whether or not there is.

  According to a third aspect of the present invention, in the image forming apparatus according to the second aspect, the control unit determines whether or not the operation for the image forming apparatus is an operation for resuming a print job. It is determined whether or not the stopped print job can be resumed.

  According to a fourth aspect of the present invention, in the image forming apparatus according to the first aspect, when the stopped print job can be resumed within the stop state holding time, the control unit performs the stopped printing. It is characterized by resuming the job.

  According to a fifth aspect of the present invention, in the image forming apparatus according to the fourth aspect, the control unit can restart the stopped print job based on whether or not an operation has been performed on the image forming apparatus. It is characterized by determining whether or not there is.

  According to a sixth aspect of the present invention, in the image forming apparatus according to the fifth aspect, the control unit determines whether or not the operation for the image forming apparatus is an operation for resuming a print job. It is determined whether or not the stopped print job can be resumed.

  According to a seventh aspect of the present invention, in the image forming apparatus according to the first aspect, the control unit determines whether or not a subsequent print job can be printed based on a paper size and a toner color used in the subsequent print job. It is characterized by judging.

  According to an eighth aspect of the present invention, in the image forming apparatus according to the first aspect, the image forming apparatus includes a plurality of paper discharge units, and the control unit stops the discharge destination of a subsequent printable print job and the stop. When the discharge destinations of the print jobs are different, the execution order of the print jobs is changed, and the subsequent printable print job is executed.

  According to a ninth aspect of the present invention, in the image forming apparatus according to the first aspect, the image forming apparatus includes a plurality of paper discharge units, and the control unit stops the discharge destination of a subsequent printable print job and the stop. When the discharge destination of the print job is the same, the print job execution order is not changed.

The invention according to claim 10 is an image forming apparatus capable of reserving a plurality of print jobs.
A setting means for setting a stop state holding time for holding the stop state of the print job;
A sheet number detecting means for detecting the number of print sheets output by the stopped print job when the print job being output is stopped;
A timing unit that counts the stop state holding time set by the setting unit when the number of detection units detects that no print paper is output by the stopped print job;
If the stopped print job cannot be resumed within the stop state holding time and there is a subsequent printable print job, the execution order of the print jobs is changed, and the subsequent printable print job is And a control means for executing.

  According to an eleventh aspect of the present invention, in the image forming apparatus according to the tenth aspect, the control unit can restart the stopped print job based on whether or not an operation has been performed on the image forming apparatus. It is characterized by determining whether or not there is.

  According to a twelfth aspect of the present invention, in the image forming apparatus according to the eleventh aspect, the control unit determines whether the operation for the image forming apparatus is an operation for resuming a print job. It is determined whether or not the stopped print job can be resumed.

  According to a thirteenth aspect of the present invention, in the image forming apparatus according to the tenth aspect, the control unit causes the stopped job when the stopped print job can be resumed within the stop state holding time. It is characterized by restarting.

  According to a fourteenth aspect of the present invention, in the image forming apparatus according to the thirteenth aspect, the control unit can restart the stopped print job based on whether or not an operation has been performed on the image forming apparatus. It is characterized by determining whether or not there is.

  According to a fifteenth aspect of the present invention, in the image forming apparatus according to the fourteenth aspect, the control unit determines whether the operation on the image forming apparatus is an operation for resuming a print job. It is determined whether or not the stopped print job can be resumed.

  According to a sixteenth aspect of the present invention, in the image forming apparatus according to the tenth aspect, the control unit determines whether or not the subsequent print job is printable based on a paper size and a toner color used in the subsequent print job. It is characterized by judging based on this.

  According to the first aspect of the present invention, when a print job being output is stopped for some reason, even if a preset stop state holding time elapses, the stopped job is left without being resumed. In this case, the operation efficiency of reserved job printing can be improved by replacing the stopped print job and the subsequent print job and starting the subsequent print job.

According to the tenth aspect of the present invention, when a print job being output is stopped for some reason, the stopped job is left without being resumed even if a preset stop state holding time elapses. In this case, the operation efficiency of reserved job printing can be improved by replacing the stopped print job and the subsequent print job and starting the subsequent print job.
In particular, the replacement of a print job is performed only when no print paper is output due to the stopped print job, thereby complicating the fact that the print job is stopped after the print paper is output. Therefore, it becomes unnecessary to set the conditions, and the image forming apparatus can be operated more efficiently.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Embodiment 1]
First, Embodiment 1 of the present invention will be described with reference to FIGS.
FIG. 1 shows a main part configuration of an image forming apparatus 100 according to Embodiment 1 of the present invention. As shown in FIG. 1, the image forming apparatus 100 includes a control unit 10, an image reading unit 11, an image processing unit 12, an image forming main body unit 13, a display operation unit 14, an image memory 15, a storage unit 16, and a time measuring unit 17. Composed.

  The control unit 10 is configured by a CPU (Central Processing Unit) or the like, and controls the operation of each unit constituting the image forming apparatus 100 according to various control programs stored in the storage unit 16.

  When the print job being output in the image forming main body 13 is stopped for some reason, the control unit 10 causes the timer 17 to display a stop state holding time (a time for holding the print job stop state) preset by the user. ). If the stopped print job is not restarted even after the stop state retention time elapses and a print job is reserved other than the stopped print job, the print job is replaced and the subsequent The process for executing the print job is performed (see FIG. 3).

  The image reading unit 11 includes a scanner and the like, and reads image information of an original with the scanner to generate a digital image signal (image data). The image processing unit 12 performs various types of image processing such as enlargement, reduction, and rotation on the image data obtained by reading by the image reading unit 11 in accordance with a control signal input from the control unit 10.

  The image forming main body 13 includes an LD (Laser Diode), a photosensitive drum, a developing unit, a transfer unit, a fixing unit, a paper feeding unit, a discharge unit, and the like, and an image processing unit according to a control signal from the control unit 10. Based on the image data processed in step 12, the LD is driven and controlled to form an electrostatic latent image on the surface of the photosensitive drum. Further, the image forming unit 13 attaches toner to the area including the electrostatic latent image on the surface of the photosensitive drum, transfers the toner onto the printing paper (transfer paper) conveyed from the paper feeding unit, fixes the toner, and then discharges the toner. Drain from the part.

The display operation unit 14 includes a display unit 141 and an operation unit 142.
The display unit 141 includes a display screen such as an LCD (Liquid Crystal Display), and performs a required display process in accordance with a display control signal input from the control unit 10.

  The operation unit 142 includes various keys such as a copy start key and a numeric keypad, and outputs operation signals of these keys to the control unit 10. Further, the operation unit 142 has a touch panel provided so as to cover the display screen of the display unit 141, detects a coordinate instructed to be touched by a coordinate reading principle such as electromagnetic induction type, magnetostrictive type, pressure sensitive type, The detected coordinates are output to the control unit 10 as a position signal. By operating the operation unit 142, various parameters necessary for the operation of the image forming apparatus 100, such as the stop state holding time, are set in the storage unit 16.

  FIG. 2 shows a copy basic screen displayed on the display unit 141. In the basic copy screen of FIG. 2, a print job for JOB 10 is currently being output, JOB 11 and JOB 12 are registered as reserved jobs (reserved copies), and a document corresponding to JOB 11 to be executed next to JOB 10 is being read. It shows that there is.

  The image memory 15 temporarily stores image data read by the image reading unit 11 and subjected to image processing by the image processing unit 12.

  The storage unit 16 is configured by an HD (Hard Disc), a nonvolatile semiconductor memory, or the like, and stores various control programs for controlling each unit of the image forming apparatus 100, data used in these programs, and the like. Further, the storage unit 16 stores print jobs received from the operation unit 142 or an external device (for example, a personal computer) connected via a communication network in the order of reception. Further, the storage unit 16 stores data on the stop state holding time input by the setting operation of the operation unit 142.

  The time measuring unit 17 measures the stop state holding time stored in the storage unit 16 in accordance with the control signal from the control unit 10, and outputs a signal indicating that the time measurement has ended to the control unit 10 when the stop state holding time elapses. To do. The setting of the stop state holding time can be changed by operating the operation unit 142.

  The communication control unit 18 controls communication with an external device connected to a communication network such as a LAN (Local Area Network).

Next, the operation in the first embodiment will be described.
With reference to the flowchart of FIG. 3, a reserved job printing process executed in the image forming apparatus 100 according to the first embodiment when a print job being output is stopped for some reason will be described.

  When the print job being output stops, it is first determined whether there is a subsequent reservation job (step S1). If it is determined in step S1 that there is no subsequent reserved job (step S1; NO), the reserved job printing process ends.

  If it is determined in step S1 that there is a subsequent reserved job (step S1; YES), it is determined whether or not the subsequent reserved job can be printed by the image forming apparatus 100 (step S11). In step S <b> 11, it is determined whether the subsequent job can be printed based on the size and number of sheets remaining in the image forming apparatus 100 or the status of remaining toner. For example, if there is no A4 size paper and is interrupted, it is determined whether there is a subsequent job that can be printed on the remaining B5 size paper. If the color toner runs out and is interrupted, monochrome toner is used. It is determined whether there is a subsequent job that can be printed.

  If it is determined in step S11 that the subsequent reserved job is not printable (step S11; NO), the reserved job printing process ends. If it is determined in step S11 that the subsequent reserved job can be printed (step S11; YES), the stop state holding time stored in the storage unit 16 is referred to (step S2), and the time measuring unit 17 Timing of the stop state holding time is started (step S3).

  If the user instructs the operation unit 142 to resume a stopped print job (step S5; YES) before the stop state holding time is counted (step S4; NO), the stopped print job It is determined whether or not can be resumed (step S6). In step S6, specifically, it is confirmed whether the cause of the print job interruption, out of paper, out of toner, and the like have been recovered.

  If it is determined in step S6 that the stopped print job can be resumed (step S6; YES), the stop state holding time is released (step S7), and the print job is resumed. The reserved job printing process ends.

  Before the stop state holding time is measured (step S4; NO), when an operation other than resuming a stopped print job is instructed by the user from the operation unit 142 (or when no operation is performed by the user) (Step S5; NO) or when it is determined that the print job cannot be restarted (when it is determined that the cause of the job stop has not been resolved) (Step S6; NO), the stop state holding time Timekeeping continues.

  In step S4, if the stopped print job is not restarted even after the stop state holding time has elapsed (step S4; YES), the print job is replaced and the subsequent print job is started (step S8). ), The reserved job printing process ends.

  As described above, according to the image forming apparatus 100 of the first embodiment, when a print job being output is stopped for some reason, even if a preset stop state holding time has elapsed, If left unrestarted, the suspended print job and the subsequent print job are swapped, and the subsequent print job is started first, thereby improving the operation efficiency of reserved job printing. it can.

  In addition, it is possible to arbitrarily set the stop state retention time, for example, set a longer stop state retention time to suppress the change of the order of print jobs, or shorten the stop state retention time to give priority to printing efficiency. For example, the usage method of the image forming apparatus 100 can be easily switched.

[Embodiment 2]
Next, Embodiment 2 of the present invention will be described with reference to FIG.
First, the configuration in the second embodiment will be described.

  The main part configuration of the image forming apparatus according to the second embodiment is the same as that shown in FIG. 1 in the first embodiment, and therefore the illustration thereof is omitted and the same reference numerals are used. Only differences from the image forming apparatus 100 according to the first embodiment will be described below.

  The control unit 10 has a function of detecting the number of sheets discharged by the print job being output (the number of output sheets of print paper). When the print job being output in the image forming main body 13 is stopped due to some factor, this stop Only when it is detected that the number of discharged sheets by the printed job is zero, the time counting unit 17 starts counting the stop state holding time preset by the user. If the stopped print job is not restarted even after the stop state retention time elapses and a print job is reserved other than the stopped print job, the print job is replaced and the subsequent The process for executing the print job is performed (see FIG. 4).

  In the second embodiment, the user-friendliness is further improved when the print job is replaced due to the interruption of the print job. Specifically, by replacing print jobs, it is possible to prevent paper discharged by different print jobs from being mixed in the paper discharge tray. For this reason, when a paper discharge due to the interrupted print job already exists in the paper discharge tray, the print job is replaced so that the subsequent printable print job is not started.

Next, the operation in the second embodiment will be described.
With reference to the flowchart of FIG. 4, a reserved job printing process executed in the image forming apparatus 100 according to the second embodiment when a print job being output is stopped for some reason will be described.

  When the print job being output is stopped, first, it is determined whether or not the number of discharged sheets of the stopped print job is zero (step S20). If it is determined in step S20 that the number of discharged sheets is one or more due to the stopped print job, that is, if it is determined that at least one print sheet is output by the print job (step S20; NO). Then, the reserved job printing process ends.

  In step S20, when it is determined that the number of discharged sheets by the stopped print job is 0 (step S20; YES), it is determined whether there is a subsequent reserved job (step S21). If it is determined in step S21 that there is no subsequent reserved job (step S21; NO), the reserved job printing process ends.

  If it is determined in step S21 that there is a subsequent reserved job (step S21; YES), it is determined whether the subsequent reserved job can be printed by the image forming apparatus 100 (step S201). In step S <b> 201, it is determined whether the subsequent job can be printed based on the size and number of sheets remaining in the image forming apparatus 100 or the status of remaining toner. For example, if there is no A4 size paper and is interrupted, it is determined whether there is a subsequent job that can be printed on the remaining B5 size paper. If the color toner runs out and is interrupted, monochrome toner is used. It is determined whether there is a subsequent job that can be printed.

  If it is determined in step S201 that the subsequent reserved job is not printable (step S201; NO), the reserved job printing process ends. If it is determined in step S201 that the subsequent reserved job can be printed (step S201; YES), the stop state holding time stored in the storage unit 16 is referred to (step S22). The stop time holding time is started (step S23).

  If the user instructs the operation unit 142 to resume a stopped print job (step S25; YES) before the stop state holding time is counted (step S24; NO), the stopped print job It is determined whether or not can be resumed (step S26).

If it is determined in step S26 that the stopped print job can be restarted (step S26; YES), the stop state holding time is released (step S27).
The print job is resumed, and the reservation job printing process is completed.

  Before the stop state holding time is measured (step S24; NO), when an operation other than resuming a stopped print job is instructed by the user from the operation unit 142 (or when no operation is performed by the user) (Step S25; NO) or when it is determined that the print job cannot be restarted (when it is determined that the cause of the job stop has not been resolved) (Step S26; NO), the stop state holding time Timekeeping continues.

  In step S24, if the stopped print job is not restarted even after the stop state holding time has elapsed (step S24; YES), the print job is replaced and the subsequent print job is started (step S28). ), The reserved job printing process ends.

  As described above, according to the image forming apparatus 100 of the second embodiment, when a print job being output is stopped for some reason, no print sheet is output due to the stopped print job, and If the stopped print job is left without being resumed even after the preset stop state retention time has elapsed, the stopped print job and the subsequent print job are switched and the subsequent print job is started. By doing so, it is possible to improve the operation efficiency of reserved job printing, to prevent paper mixture on the paper discharge tray, and to improve user convenience.

  In particular, the print job is replaced only when the number of discharged print jobs is 0, so that there is output paper in the finisher (not shown) in the image forming apparatus 100. Therefore, it is not necessary to set complicated conditions due to the number of output copies being in the middle, and the image forming apparatus 100 can be operated more efficiently.

  Also in the second embodiment, since the stop state holding time can be arbitrarily set, for example, the stop state holding time can be set long to suppress the change of the order of the print jobs, or the stop state holding time can be shortened. Thus, it is possible to easily switch the usage method of the image forming apparatus 100 by giving priority to the printing efficiency.

[Embodiment 3]
Next, a third embodiment of the present invention will be described with reference to FIG.
The main part configuration of the image forming apparatus 100 according to the third embodiment is the same as that of the first and second embodiments. However, the image forming apparatus 100 according to the third exemplary embodiment includes a plurality of paper discharge trays.

  The control unit 10 has a function of detecting the paper discharge destination (tray) of the interrupted print job and the paper discharge destination (tray) specified in the subsequent printable job. When the print job being output in the image forming main body 13 stops due to some factor, the timer 17 starts counting the stop state holding time preset by the user, and the stop state holding time has elapsed. However, if the print job that has been stopped is not restarted and a printable job is reserved in addition to the stopped print job, and the two paper discharge destinations are different, the print job is replaced. Processing for executing the subsequent print job is performed (see FIG. 5).

  In the third embodiment, the user-friendliness is further improved when the print job is replaced due to the interruption of the print job. Specifically, when the discharge destination of the interrupted print job and the discharge destination of the subsequent printable print job are the same, the subsequent printable print job is not started. As a result, paper discharge due to different print jobs is prevented from being mixed in the same tray.

Next, the operation in the third embodiment will be described.
With reference to the flowchart of FIG. 5, a reserved job print process executed in the image forming apparatus 100 according to the third embodiment when a print job being output is stopped for some reason will be described.

  When the print job being output is stopped, it is first determined whether there is a subsequent reservation job (step S30). If it is determined in step S30 that there is no subsequent reserved job (step S30; NO), the reserved job printing process ends.

  If it is determined in step S30 that there is a subsequent reserved job (step S30; YES), it is determined whether or not the subsequent reserved job can be printed by the image forming apparatus 100 (step S31). Details of step S31 are the same as those described in step S11 (embodiment 1) in FIG. 3 and step S201 (embodiment 2) in FIG.

  If it is determined in step S31 that the subsequent reserved job is not printable (step S31; NO), the reserved job printing process ends. If it is determined in step S31 that the subsequent reserved job can be printed (step S31; YES), whether or not the discharge tray of the stopped print job is different from the discharge tray of the subsequent printable reserved job is determined. Is determined (step S32).

  If it is determined in step S32 that the discharge tray of the stopped print job and the discharge tray of the subsequent printable reservation job are the same (step S32; NO), the reservation job printing process ends. In step S32, when it is determined that the discharge tray of the stopped print job is different from the discharge tray of the subsequent printable reservation job (step S32; YES), the stop state holding time stored in the storage unit 16 is determined. Reference is made (step S33), and the timer 17 starts measuring the stop state holding time (step S34).

  If the user instructs the operation unit 142 to resume a stopped print job (step S37; YES) before the stop state holding time is measured (step S35; NO), the stopped print job Whether or not can be resumed is determined (step S38).

  If it is determined in step S38 that the stopped print job can be resumed (step S38; YES), the stop state holding time is released (step S39), and the print job is resumed. The reserved job printing process ends.

  Before the stop state holding time is counted (step S35; NO), when an operation other than resuming a stopped print job is instructed by the user from the operation unit 142 (or when no operation is performed by the user) (Step S37; NO) or when it is determined that the print job cannot be resumed (when it is determined that the cause of the job stop has not been resolved) (Step S38; NO), the stop state holding time Timekeeping continues.

  In step S35, even if the stop state holding time has elapsed, if the stopped print job is not restarted (step S35; YES), the print job is replaced and the subsequent print job is started (step S36). ), The reserved job printing process ends.

  In the third embodiment, the reserved job printing process is ended when the discharge tray of the stopped print job and the discharge tray of the subsequent printable reserved job are the same. Thereafter, similarly to step S20 and subsequent steps in the second embodiment, the processing may be performed according to the number of discharged sheets in the discharge tray by the stopped print job.

  As described above, according to the image forming apparatus 100 of the third embodiment, when a print job being output is stopped for some reason, no print sheet is output due to the stopped print job, and If the stopped print job is left without being resumed even after the preset stop state retention time has elapsed, the stopped print job and the subsequent print job are switched and the subsequent print job is started. By doing so, it is possible to improve the operation efficiency of reserved job printing, to prevent paper mixture on the same paper discharge tray, and to improve user convenience.

1 is a block diagram showing a main part configuration of an image forming apparatus according to Embodiments 1 to 3 of the present invention. 3 is a diagram showing an example of a basic copy screen displayed on a display unit of the image forming apparatus. FIG. 5 is a flowchart showing reserved job printing processing executed in the image forming apparatus according to the first embodiment of the present invention. 9 is a flowchart showing reserved job printing processing executed in the image forming apparatus according to the second embodiment of the present invention. 10 is a flowchart showing reserved job print processing executed in the image forming apparatus according to the third embodiment of the present invention.

Explanation of symbols

10 Control unit (control means, number detection means)
DESCRIPTION OF SYMBOLS 11 Image reading part 12 Image processing part 13 Image formation main-body part 14 Display operation part 141 Display part 142 Operation part (setting means)
15 Image memory 16 Storage section 17 Timekeeping section (timekeeping means)
100 Image forming apparatus

Claims (16)

In an image forming apparatus that can reserve multiple print jobs,
A setting means for setting a stop state holding time for holding the stop state of the print job;
A timing unit that counts the stop state holding time set by the setting unit when the print job being output is stopped;
If the stopped print job cannot be restarted within the stop state holding time and there is a subsequent printable print job, the execution order of the print jobs is changed, and the subsequent printable print job Control means for executing
An image forming apparatus comprising:   The image forming apparatus according to claim 1, wherein the control unit determines whether or not the stopped print job can be resumed based on whether or not an operation is performed on the image forming apparatus. apparatus.   The control unit determines whether the stopped print job can be restarted based on determination of whether the operation on the image forming apparatus is an operation for resuming a print job. The image forming apparatus according to claim 2.   The image forming apparatus according to claim 1, wherein the control unit restarts the stopped print job when the stopped print job can be restarted within the stop state holding time.   The image forming apparatus according to claim 4, wherein the control unit determines whether or not the stopped print job can be resumed based on whether or not an operation is performed on the image forming apparatus. apparatus.   The control unit determines whether the stopped print job can be restarted based on determination of whether the operation on the image forming apparatus is an operation for resuming a print job. The image forming apparatus according to claim 5, wherein:   The image forming apparatus according to claim 1, wherein the control unit determines whether a subsequent print job is printable based on a paper size and a toner color used in the subsequent print job. A plurality of paper discharge units,
When the discharge destination of a subsequent print job that can be printed is different from the discharge destination of the print job that is stopped, the control unit switches the execution order of the print jobs and performs the subsequent print job The image forming apparatus according to claim 1, wherein: A plurality of paper discharge units,
The control unit does not change the execution order of print jobs when a discharge destination of a subsequent printable print job and a discharge destination of the stopped print job are the same. The image forming apparatus according to 1. In an image forming apparatus that can reserve a plurality of print jobs,
A setting means for setting a stop state holding time for holding the stop state of the print job;
A sheet number detecting means for detecting the number of print sheets output by the stopped print job when the print job being output is stopped;
A timing unit that counts the stop state holding time set by the setting unit when the number of detection units detects that no print paper is output by the stopped print job;
If the stopped print job cannot be resumed within the stop state holding time and there is a subsequent printable print job, the execution order of the print jobs is changed, and the subsequent printable print job is Control means to execute;
An image forming apparatus comprising:   The image forming apparatus according to claim 10, wherein the control unit determines whether or not the stopped print job can be resumed based on whether or not an operation is performed on the image forming apparatus. apparatus.   The control unit determines whether the stopped print job can be restarted based on determination of whether the operation on the image forming apparatus is an operation for resuming a print job. The image forming apparatus according to claim 11, wherein the image forming apparatus is an image forming apparatus.   The image forming apparatus according to claim 10, wherein the control unit restarts the stopped job when the stopped print job can be restarted within the stop state holding time.   The image forming apparatus according to claim 13, wherein the control unit determines whether or not the stopped print job can be resumed based on whether or not an operation is performed on the image forming apparatus. apparatus.   The control unit determines whether the stopped print job can be restarted based on determination of whether the operation on the image forming apparatus is an operation for resuming a print job. The image forming apparatus according to claim 14, wherein:   The image forming apparatus according to claim 10, wherein the control unit determines whether a subsequent print job is printable based on a paper size and a toner color used in the subsequent print job.

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