JP2007336755A - Job processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a job processor capable of eliminating such an inconvenience as a booked job with higher priority being lost due to deficiency in back-up power supply capacity, when a plurality of jobs are booked. <P>SOLUTION: The job processor derives a predicted value of power consumption necessary for finishing the execution of the entire booked jobs which are not executed yet. When the residual amount of the back-up power supply 22 is deficient as compared with the predicted value of the power consumption, the execution order of the plurality of booked jobs is decided based on the attributes of the jobs, for example, the importance of the jobs, the processing amount of the jobs (the number of pages and the amount of data) or the like. When executing the booked jobs with the back-up power supply 22 during power failure, the booked jobs are executed according to the decided execution order, regardless of the appointed execution date and time when booked. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a job processing apparatus that can be operated by a backup power supply when power supply from a main power supply is stopped.

  In this type of device, when the power supply from the main power supply is stopped due to a power failure or the like, it is possible to operate the device by switching to the backup power source. Since the backup power supply is gradually consumed due to maintaining the energization, it is difficult to back up for a long time, and there is a limit to the time that can be backed up.

  Therefore, during a power outage, the backup power supply voltage level is monitored, and the backup operation is stopped in order from the load circuit with the highest power consumption as the voltage level drops. For such a circuit, there has been proposed an apparatus that can continue backup for as long as possible (see, for example, Patent Document 1).

JP 2000-156942 A

  Some apparatuses such as a facsimile apparatus can input a so-called reservation job in which a read original is not transmitted immediately, but is transmitted after waiting for a designated date and time. In such an apparatus, the scanned image data and job setting data are stored in the memory, so that a power failure occurs before the specified execution date and the power outage is prolonged. The backup of the memory by the backup power supply cannot be continued, the reservation job disappears, and the user is greatly inconvenienced.

  In the technique disclosed in Patent Document 1, backup of a memory with a large load is preferentially stopped in order to maintain a backup operation of a clock circuit or the like for a long time, so that the reserved job disappears earlier.

  On the other hand, if a power failure occurs, it may be possible to immediately execute an unexecuted reservation job that remains at that time, but the power failure may be restored in a relatively short time, so at the same time as the power failure If the reserved job is executed uniformly, the function as a reserved job that can specify the execution date and time is impaired.

  In addition, when there are a plurality of reservation jobs, all of these reservation jobs may not be executed due to the remaining capacity of the backup power supply. In such a case, if reservation jobs are simply executed in the order from the designated execution date and time, there is a possibility that inconveniences such as an important reservation job disappear due to a lack of backup power source capacity.

  The present invention is intended to solve the above-described problem, and in the case where there are a plurality of reservation jobs, it is possible to prevent a problem such as a high-priority reservation job disappearing due to a lack of backup power source capacity. An object of the present invention is to provide a job processing apparatus capable of performing the above.

  The gist of the present invention for achieving the object lies in the inventions of the following items.

(1) In a job processing apparatus that has a main power supply and a backup power supply, and enables operation of the apparatus by power supply from the backup power supply when power supply from the main power supply is stopped,
Job reservation means for accepting reservations for reserved jobs with specified execution dates and times,
Detecting means for detecting an attribute of the reserved job;
A job processing apparatus comprising: a determination unit that determines an execution order when a plurality of reserved jobs are executed by the backup power source according to a detection result of the detection unit.

  In the above invention, the effective order when a plurality of reserved jobs are executed with power supplied from a backup power supply is set to the attributes of each reserved job, for example, job priority (importance), job processing amount (number of pages and data amount) ) And so on. What is necessary is just to define arbitrarily the attribute item of the job used as the reference | standard of this determination. Further, how to evaluate each attribute item to determine the execution order (for example, whether to give priority to items with a large number of pages or to give priority to items with a small number of pages) may be arbitrary.

  The determination time may be any time before starting the execution of the reservation job by the backup power supply.For example, the execution order may be determined every time a reservation job is newly reserved, or the main power supply is switched to the backup power supply. You may decide when changing.

(2) The job according to (1), further comprising job control means for executing the reserved job by power supply from the backup power source based on the execution order determined by the determining means. Processing equipment.

  In the above invention, when the timing for executing the reservation job with the power supply from the backup power supply comes, the reservation job is executed based on the execution order determined by the determining means. The reservation job execution timing may be set as appropriate. For example, it may be set immediately after the main power supply is stopped, after a certain period of time after the main power supply stops, or after a main power supply stop, It may be when the earliest execution date / time has arrived.

(3) further comprising switching detection means for detecting switching from the main power supply to the backup power supply;
The job processing apparatus according to (1) or (2), wherein the determining unit determines the execution order in response to detection of switching by the switching detection unit.

  In the above invention, the execution order of the reservation job is determined when switching from the main power source to the backup power source. When the power supply from the main power supply is stopped, it is preferable not to accept a new reservation job.

(4) The job processing apparatus according to (3), wherein the job control unit causes the reserved job to be executed in response to detection of switching by the switching detection unit.

(5) The advancement propriety information indicating whether or not the reservation job can be executed before the execution date and time is one of the conditions for determining the execution order by the determination means. 4) The job processing apparatus according to any one of 4).

(6) Any one of (1) to (4), wherein the regular communication information indicating whether the scheduled job is regular communication is one of the conditions for determining the execution order by the determining means. The job processing apparatus according to one.

(7) The attribute includes at least one of job registrant information, transmission destination information, confidentiality, job registration form, power usage amount during job execution, and job capacity. The job processing device according to any one of (6).

  In addition, the job attributes include the priority of the job specified by the user.

(8) Any one of (1) to (7), further comprising designation means for designating whether or not the execution order of the reservation job is determined by the determination means. The job processing device described in 1.

  In the above invention, the user can specify whether or not each reservation job is to be determined by the determining means. The designation may be direct designation as to whether or not to be determined, or may be indirectly designated through settings relating to other items such as a confidential level.

(9) a remaining amount detecting means for detecting a remaining amount of power supplied from the backup power source;
The job according to any one of (1) to (8), further comprising: derivation means for deriving a predicted value of power consumption necessary for completing execution of the unexecuted reserved job Processing equipment.

  In the above invention, the remaining amount of power supplied from the backup power source is detected, and a predicted value of power consumption necessary for completing the execution of the unexecuted reserved job is derived. The result of comparing the remaining amount of power supplied by the backup power supply with the predicted value of power consumption required for execution can be used to determine the execution order of the reserved jobs. For example, it is possible to make the execution order different depending on whether the remaining amount of the backup power supply is slightly short of the predicted value of power consumption or not.

  The remaining amount of power supplied from the backup power source is estimated from the output voltage value of the backup power source and the like. The predicted value of power consumption is estimated based on, for example, the number of reserved jobs, the execution contents of reserved jobs (for example, job type, number of pages, and data amount).

(10) The job processing apparatus according to (9), wherein the determination unit determines the execution order when the predicted value of the power consumption exceeds the remaining power supply.

  In the above invention, when not all of the reservation jobs that have not been executed can be executed with the remaining amount of backup power, the execution order of the reservation jobs is determined based on the job attributes.

(11) When the predicted value of the power consumption is lower than the remaining amount of supplied power, the reservation jobs are executed in order based on the execution date and time specified for the reservation job (9) or The job processing apparatus according to any one of (10).

  In the above invention, when all of the reservation jobs that have not been executed can be executed with the remaining amount of backup power, the execution order based on the reserved execution date and time is respected.

(12) Deriving means for deriving a predicted value of power consumption necessary for completing execution of the unexecuted reservation job;
Switching detection means for detecting switching from the main power source to the backup power source;
After the switching detection means detects the switching from the main power supply to the backup power supply, a remaining amount detection means for periodically detecting the remaining amount of power supplied by the backup power supply;
Judgment that it is determined that it is the execution timing of the unexecuted reserved job when the remaining amount of power supplied to the backup power source detected by the remaining amount detecting unit is lower than the predicted value of the power consumption derived by the deriving unit Means and
The job control unit causes the reserved job to be executed based on the execution order determined by the determining unit, or causes the reserved job to be executed when the determination unit determines that it is an execution time. (2) The job processing apparatus according to (2).

(13) Deriving means for deriving a predicted value of power consumption necessary for completing execution of the unexecuted reserved job;
Switching detection means for detecting switching from the main power source to the backup power source;
Residual amount detecting means for detecting the remaining amount of power supplied from the backup power source in response to detection of switching from the main power source to the backup power source by the switching detection unit;
Based on the predicted value of the power consumption derived by the deriving unit and the remaining amount of power supplied to the backup power source detected by the remaining amount detecting unit, the switching detection unit switches from the main power source to the backup power source. Determining means for determining the execution time of the unexecuted reserved job after detecting
The job control unit causes the reserved job to be executed based on the execution order determined by the determining unit, or causes the reserved job to be executed when the execution time comes (2) ).

(14) Deriving means for deriving a predicted value of power consumption necessary for completing execution of the unexecuted reservation job;
The execution timing of the unexecuted reservation job while the power supply from the main power supply is stopped based on the predicted value of the power consumption derived by the deriving means and the remaining power supply of the backup power supply. A judging means for judging,
The job control unit causes the reserved job to be executed based on the execution order determined by the determining unit, or causes the reserved job to be executed when the execution time comes (2) ).

  According to the job processing apparatus of the present invention, the execution order when a plurality of reserved jobs are executed by the backup power source is determined based on the attributes of the reserved jobs. Even when the capacity of the power supply is insufficient, for example, by processing from a reservation job having a high priority, it is possible to prevent such a problem that the related job disappears due to insufficient capacity of the backup power supply.

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

  FIG. 1 shows a schematic configuration of an image forming apparatus 10 as a job processing apparatus according to an embodiment of the present invention. The image forming apparatus 10 optically reads a document, forms a duplicate image on a recording paper and outputs it, a facsimile function for transmitting and receiving image data, and forms an image based on print data and image data on the recording paper. In other words, it is configured as a so-called digital multi-function machine having a printer function and the like.

  The image forming apparatus 10 includes a timer reservation function for submitting a transmission job for facsimile transmission of image data, a print job for printing based on image data, and the like as a reservation job in which the execution date is specified. Execution of the reservation job is suspended until the date and time specified at the time of reservation arrives, and the execution starts when the specified date and time arrives.

  The image forming apparatus 10 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a memory 13, an operation display unit 14, a reading unit 15, an image forming unit 16, and a communication unit 17. It is configured to be connected to the bus 18. Further, regarding power management and reserved job execution management, a main power source 21, a backup power source 22, a power supply control unit 23 that controls switching of these power sources, a real-time clock 24, a timer reservation control unit 25, And a reserved job control unit 26.

  The CPU 11 has a function of performing overall control of the operation of the image forming apparatus 10. The ROM 12 is a read-only memory in which various programs are stored in advance. The memory 13 is used as a work memory for temporarily storing various data and an image memory for storing image data when the CPU 11 executes a program stored in the ROM 12.

  The memory 13 includes a nonvolatile memory such as a DRAM (Dynamic Random Access Memory), an SRAM (Static Random Access Memory), or an SDRAM (Synchronous DRAM). However, even when the power supply from the main power supply 21 is stopped, the backup power supply 22 is provided. By being backed up by this, data can be stored in a nonvolatile manner during the backup period. The memory 13 stores job information and image data related to reserved jobs.

  The operation display unit 14 includes a display device such as a liquid crystal display and a touch panel or an operation switch laid on the screen of the liquid crystal display. The operation display unit 14 displays various screens for a user interface such as a setting screen and an operation screen. It fulfills the function of receiving user operations. The operation display unit 14 functions in cooperation with the CPU 11 as a designation unit that designates, for each reservation job, whether or not a job reservation unit that accepts the input of a reservation job and whether or not an execution order is determined by a determination unit described later. Fulfill.

  The reading unit 15 performs a function of optically reading a document image and outputting corresponding image data. The reading unit 15 includes a line image sensor.

  The image forming unit 16 functions to form an image corresponding to image data on a sheet. Here, as a laser printer using an electrophotographic process, which has a paper transport device, a photosensitive drum, a charging device, a laser unit, a developing device, a transfer separation device, a cleaning device, and a fixing device. It is configured.

  The communication unit 17 functions to transmit and receive various data through a network and a telephone line, and to transmit and receive image data and control data related to the facsimile function.

  The main power source 21 is a power source supplied from an electric power company, and normally power is stably supplied. When the power supply from the main power supply 21 stops (becomes impossible), for example, there is a power failure, disconnection of a power outlet, transition to a sleep mode, and the like.

  The backup power source 22 is a power source used when the power supply from the main power source 21 is stopped, and is constituted by a secondary battery, for example. Regardless of the type of secondary battery, a large-capacity capacitor may be used. In any case, it is sufficient that the power that can be supplied is limited. The backup power source 22 is charged via the power supply control unit 23 from the main power source 21.

  The power supply control unit 23 mainly performs a function of controlling whether power is supplied to each load from the main power supply 21 or the backup power supply 22. When the power supply from the main power supply 21 is stopped, the power supply is performed only from the backup power supply 22 to a specific load such as the memory 13, and the power is supplied from the main power supply 21 otherwise.

  In addition, the power supply control unit 23 serves as a derivation unit that derives a predicted value of power consumption required to complete the execution of an unexecuted reservation job, and a remaining amount detection unit that detects the remaining amount of the backup power source 22. It has a function.

  The remaining amount detection means detects the voltage level of the backup power source 22 and indirectly recognizes the remaining amount of the backup power source 22 from the voltage level.

  The derivation means predicts the power consumption required to complete the execution of the reservation job based on the number of reservation jobs stored in the memory 13, the job type, the image data size, the number of pages, the amount of data, and the like. Calculate the value. Here, the predicted value of power consumption is obtained as the voltage level of the power supply (hereinafter referred to as a specified voltage value).

  The power supply control unit 23 compares the specified voltage value (predicted value) necessary for executing all unexecuted reservation jobs with the voltage level (remaining amount) of the backup power supply 22, and the specified voltage value is the backup power supply. When the voltage level exceeds 22, the function for validating (outputting) the valid job selection request signal S5 is achieved.

  After the reservation job is set, the CPU 11 validates (outputs) the timer reservation signal S1 indicating that there is an unexecuted reservation job while the reservation job is waiting to be executed. Yes. The timer reservation signal S1 is input to the power supply control unit 23 and the timer reservation control unit 25. While the timer reservation signal S1 is input from the CPU 11, the power supply control unit 23 determines the specified voltage value (remaining amount) obtained by the deriving unit as the predicted value of power consumption, and the backup power source 22 detected by the remaining amount detecting unit. When the voltage level detected by the remaining amount detecting means falls below a specified voltage value during power supply from the backup power supply 22, the power supply stop signal S2 is activated. The power supply stop signal S2 is input to the timer reservation control unit 25.

  The power supply control unit 23 supplies power to each part of the image forming apparatus 10 including the CPU 11 in a normal state where power supply is performed from the main power supply 21, and power supply from the main power supply 21 is stopped. When the backup power source 22 is used, power is supplied from the backup power source 22 to the memory 13, the power supply control unit 23, the real-time clock 24, the timer reservation control unit 25, and the reserved job control unit 26. Further, when a reservation job is executed while the power supply from the main power supply 21 is stopped (when a timer reservation execution signal S3 described later becomes valid), it is necessary for the execution of the reservation job such as the CPU 11. Electric power is supplied from a backup power source 22 to various locations. In FIG. 1, a solid line P indicates power supply from the main power supply 21, and a broken line Q indicates power supply from the backup power supply 22.

  The real-time clock 24 has a clock function for measuring the date and time and a timer function for monitoring the arrival of the set date and time. The timer function is a function for enabling the timer interrupt signal S4 when the timer date and time set in the real-time clock 24 coincides with the date and time counted by the clock function. The timer interrupt signal S4 is input to the timer reservation control unit 25.

  The reserved job control unit 26 receives the timer reservation signal S1 from the CPU 11 and the valid job selection request signal S5 from the power supply control unit 23. The reserved job control unit 26 executes a plurality of reserved jobs by the switching detection means for detecting the switching from the main power supply 21 to the backup power supply 22, the detection means for detecting the attribute of the reserved job, and the backup power supply 22. It functions as a determination unit that determines the execution order of the items according to the detection result of the detection unit.

  When both the timer reservation signal S1 and the valid job selection request signal S5 become valid, the reserved job control unit 26 determines the execution order of the reserved jobs, and the execution job information S6 corresponding to the determination result is displayed on the CPU 11 and not shown. The function to output to the image processing system (including ASIC).

  The timer reservation control unit 25 performs a function of determining whether or not the reservation job execution start timing has arrived and controlling the execution start of the reservation job. More specifically, when the timer reservation signal S1 is valid and the power supply stop signal S2 or the timer interrupt signal S4 is valid, the timer reservation execution signal S3 for instructing the start of execution of the reservation job is made effective.

  The timer reservation execution signal S3 is input to the CPU 11 and the power supply control unit 23, and when the timer reservation execution signal S3 becomes valid, the power supply control unit 23 supplies power to a location necessary for job execution, such as the CPU 11. Start. The CPU 11 activated upon receiving power supply executes a reserved job stored in the memory 13. At this time, referring to the execution job information S6, the CPU 11 executes the reservation jobs in the execution order determined by the reservation job control unit 26 or in the order corresponding to the date and time specified at the time of reservation.

  Next, the operation of the image forming apparatus 10 related to execution management of reserved jobs will be described.

  FIG. 2 shows the flow of operations when a reserved job is set. The reserved job can be set only while power is supplied from the main power source 21. The user performs settings related to the reservation job through the operation display unit 14 and the like, and inputs the reservation job (step S101). In this setting, in addition to specifying the execution date and time, it is specified whether or not to make this reservation job the execution order determination target in the reservation job control unit 26. When the job is submitted, an operation for registering a reserved job in the apparatus and setting the timer date and time in the real time clock 24 is performed (step S102). For example, the set original is read, and the image data acquired by the reading operation is stored in the memory 13 in association with job information for controlling execution of the job.

  The job information includes job registrant information indicating the registrant of the job, security level information indicating the confidentiality of the job, job registration form information (document reading by the reading unit 15 or job registration by electronic data from a PC (Personal Computer)) In addition to information indicating whether the job type (print job or facsimile transmission job, etc.), resolution, document size, number of pages, specified execution date and time, and whether or not to determine the execution order In the case of a transmission job, there is information such as a transmission destination. The execution date and time designated when the reserved job is submitted is set in the real-time clock 24 as the timer date and time.

  When the reserved job is registered, the timer reservation signal S1 becomes valid under the control of the CPU 11 (step S103), and the derivation means of the power supply control unit 23 that has received this is the job of the reserved job stored in the memory 13 Based on the information and the like, a predicted value (specified voltage value) of power consumption necessary for executing the reservation job is calculated (step S104).

  The power supply control unit 23 compares the determined specified voltage value with the voltage level (remaining amount) of the backup power supply 22, and if the specified voltage value exceeds the voltage level of the backup power supply 22 (step S105; Y), it is valid. The job selection request signal S5 is output, and the reserved job control unit 26 receiving the job selection request signal determines the execution order of reserved jobs when power is supplied from the backup power source 22 based on the reserved job attributes (step S106).

  Job attributes include reserved job execution power, execution date and time specified at the time of reservation, job registrant information, confidential level information, job registration form information, job type (print job or facsimile transmission job, periodic communication) Information indicating whether or not to determine the execution order, job priority specified by the user, transmission destination information, and the like. One or more types of attribute information (job execution priority information) selected from these are used as evaluation criteria for determining the execution order of reserved jobs.

  For a reservation job whose execution date and time specified at the time of reservation has arrived during power supply from the main power supply 21, the job is executed by power supply from the main power supply 21. When the execution of one reservation job is completed, the predicted value of power consumption necessary for executing the reservation job that remains unexecuted is recalculated and the specified voltage value is updated. Further, when the execution of all the reservation jobs is completed, the CPU 11 invalidates the timer reservation signal S1.

  FIG. 3 shows details of the process (specified voltage value derivation process) shown in step S104 of FIG. FIG. 4 shows an example of voltage conversion tables 30, 40, and 50 that are referred to in the specified voltage value deriving process.

  The printing voltage conversion table 30 in FIG. 4A is a conversion table for obtaining a predicted value of power consumption necessary for executing a print job as a voltage value. The printing voltage conversion table 30 associates the number of pages with the printing time Pa (unit: second) for processing the number of pages, and the power consumption necessary for performing the printing operation for the printing time Pa. Print voltage Pb expressed in level (unit: V, volt), total total print time Pc including warm-up time, and total power expressed in voltage level including power consumption required for warm-up operation The printing voltage Pd is listed for each page number. Here, the warm-up time is 15 seconds, and the voltage level required for the warm-up operation is 0.020 volts.

  The communication voltage conversion table 40 shown in FIG. 4B is a conversion table for obtaining a predicted value of power consumption necessary for executing a transmission job as a voltage value. Similarly to the printing voltage conversion table 30, the communication voltage conversion table 40 is associated with the number of pages, the communication time Ta (unit: second) necessary for processing the number of pages, and the communication time Ta. Required for FAX transmission voltage Tb (unit: V, volt) expressing power consumption necessary for communication in voltage level and basic communication part other than image data transmission (for example, calling and line disconnection processing) The total total communication time Tc with additional communication time added, and the total FAX transmission voltage Td representing the total power consumption with the power consumption required for the basic communication part expressed in voltage level are listed for each page number. is there. Here, the basic communication time is 10 seconds, and the voltage level necessary for the operation of the basic communication portion is 0.001 volts.

  The common partial voltage conversion table 50 in FIG. 4C is a conversion table for obtaining a predicted value of power consumption in a portion commonly used in all jobs as a voltage value. The common part voltage conversion table 50 is associated with the execution time Ea of the reserved job, the execution voltage Eb representing the power consumption necessary for operating the common use part for the execution time, and the system in the sleep mode. The total execution voltage Ed that represents the total power consumption as a common use part, which is obtained by adding the power consumption necessary for starting from the hibernation state to the state where the reservation job can be started, is expressed in voltage level. is there.

  Each value of the voltage conversion tables 30, 40, and 50 is a value obtained by operating the image forming apparatus 10 in advance.

  Here, the specified voltage value derivation process of FIG. 3 will be described using a case where a 10-page print job (timer print job) and a 2-page transmission job (timer transmission job) are set as reservation jobs as a sample case. To do. Further, in FIG. 4, each numerical value corresponding to the case of the sample case is shown surrounded by a one-dot broken line.

  The power supply control unit 23 determines the state of the timer reservation signal S1 input from the CPU 11 (FIG. 3, step S121). If it is invalid (step S121; invalid), no process is performed and the process is terminated (end). .

  When the timer reservation signal S1 is valid (step S121; valid), the power supply control unit 23 selects one (uncalculated) reservation job stored in the memory 13 and selects the reservation job. The job type of the job is determined (step S122). Here, there are two types of reservation jobs, a timer transmission job and a timer print job, and among these, the job type is determined.

  When the job type is a timer print job (step S122; printing), the power supply control unit 23 refers to the printing voltage conversion table 30 in FIG. 4 and prints from the number of pages on which image formation is performed in the timer print job. Time is calculated (step S123). For example, if the number of printed sheets is 10, the printing time Pa is 10 seconds (see A1 in FIG. 4). Further, a printing voltage Pb necessary for executing a printing operation for the printing time Pa is obtained from the printing time Pa obtained in step S123 (step S124). When the number of pages is 10 and the printing time Pa is 10 seconds, the printing voltage Pb is 0.050 volts (see A2 in FIG. 4).

  Further, when the warm-up amount for setting the fixing temperature to an appropriate value is added, the total printing time Pc is 25 seconds (see A3 in FIG. 4), and the total printing voltage Pd is 0.070 volts (FIG. 4). (See A4).

  When the job type is a timer transmission job (step S122; communication), the power supply control unit 23 refers to the communication voltage conversion table 40 in FIG. 4 and performs communication required for transmission from the number of pages transmitted in the timer transmission job. Time is calculated (step S125). For example, if the number of transmitted sheets is 2, the communication time Ta is 20 seconds (see B1 in FIG. 4). Further, the FAX transmission voltage Tb necessary for executing the transmission operation for the communication time Ta is determined from the communication time Ta determined in step S125 (step S126). When the number of pages is two and the communication time Ta is 20 seconds, the FAX transmission voltage Tb is 0.002 volts (see B2 in FIG. 4).

  Further, if the basic communication part for further dialing to establish a call is added, the total communication time Tc is 30 seconds (see B3 in FIG. 4), and the total FAX transmission voltage Td is 0.003 volts ( (See B4 in FIG. 4).

  When the calculation of the execution time and voltage level specific to each job is completed as described above, it is checked whether or not an uncalculated reserved job remains in the memory 13 (step S127), and there is an uncalculated reserved job. If so (step S127; job present), the execution time and voltage level are calculated for the reserved job (steps S122 to S126).

  When the calculation process for all the reserved jobs stored in the memory 13 is completed (step S127; no job), it corresponds to the power consumption necessary for the common use part of the timer print job and the timer transmission job to operate. Derivation of voltage level.

  Specifically, first, the execution time of the commonly used part is obtained. The image forming apparatus 10 can process a timer print job and a timer transmission job simultaneously in parallel. Therefore, when there is only one reservation job, the execution time of the reservation job is set as the execution time of the common use part. When there are a plurality of reservation jobs, the execution time Pc of the timer print job (the total time when there are a plurality of reservation jobs) Is compared with the execution time Tc of the timer transmission job (the total time when there are a plurality of timer transmission jobs), and the larger value is obtained as the execution time of the common use portion. Then, a voltage level corresponding to the execution time of the common use part is obtained with reference to the common part voltage conversion table 50 (step S128).

  In the case shown in FIGS. 3 and 4, the total print time Pc of the timer print job is 25 seconds (A3 in FIG. 4) and the total communication time Tc of the timer transmission job is 30 seconds (B3 in FIG. 4). The longer 30 seconds is determined as the execution time of the commonly used part. By referring to the common part voltage conversion table 50 based on the execution time, the total execution voltage Ed in the common use part is obtained as 2.560 volts (C4 in FIG. 4).

  With the above processing, the total print voltage Pd in the timer print job, the total FAX transmission voltage Td in the timer transmission job, and the total execution voltage Ed in the common use part are obtained. The predicted value of the power consumption necessary for executing all the reservation jobs that remain is obtained as the voltage level (specified voltage value) of the backup power supply 22 (step S129). Further, the power supply control unit 23 compares the specified voltage value with the voltage level of the backup power supply 22, and if the specified voltage value exceeds the voltage level of the backup power supply 22, that is, consumption required for execution of all reserved jobs. If the power exceeds the remaining amount of power supplied by the backup power source 22, control is performed to output a valid job selection request signal S5 (step S130), and the process ends (END).

  In the case of the sample case, the total print voltage in the timer print job is 0.070 volts (A4 in FIG. 4), the total fax transmission voltage in the timer transmission job is 0.003 volts (B4 in FIG. 4), The total execution voltage of 2.560 volts (C4 in FIG. 4) is calculated to be 2.633 volts as the specified voltage value.

  Next, the operation of the reserved job control unit 26 when the valid job selection request signal S5 becomes valid will be described with reference to FIG.

  The reserved job control unit 26 determines whether the valid job selection request signal S5 is valid or invalid (step S201), and if valid (step S201; valid), checks the number of reserved jobs (step S202). When there are a plurality of reserved jobs (step S202; number of jobs> 1), the execution order is determined and replaced by the job attribute information (job execution priority information) (step S203).

  When the valid job selection request signal S5 is invalid (step S201; invalid) and when the number of reserved jobs is 1 (step S202; number of jobs = 1), the execution order of the reserved jobs cannot be rearranged. End (end). In this case, even when power is supplied from the backup power source 22, the reservation jobs are executed in the order according to the execution date and time specified at the time of reservation.

  Next, an operation example in step S203 in FIG. 5 will be described.

  As an example of job execution priority information, information indicating whether or not the execution of a reserved job can be advanced in the event of a power failure is used. Whether or not advancement is possible is specified by the user at the time of job registration registration through the operation display unit 14 (designating means). It is assumed that the reservation job designated as advanceable is executed synchronously (continuously) with the reservation job executed first after switching to the backup power source 22.

  FIG. 6 is an example of the order management table 60 showing the relationship between the registration status of reserved jobs and the power consumption for executing them. In the figure, for each reserved job, the job execution order (execution order) 61, job No 62, job type 63, capacity 64 of the job (here, the number of processed sheets), and the execution date and time specified at the time of reservation (Time) 65, job execution voltage 66a, apparatus start-up voltage 66b, backup voltage 66c per hour, total voltage 66d indicating total power consumption, and advanceability information 67 indicating whether advancement is possible in the event of a power failure Are shown in a horizontal row.

  As a precondition, the voltage of the backup power supply 22 is 2.5 V, and the current time is 20:00. The job execution voltage 66a is set to 0.05V per sheet for a FAX job, 0.1V per sheet for a Copy job, and 0.1V per sheet for a Printer job. The apparatus activation voltage 66b is electric power (voltage) required to activate the apparatus from the standby state to the ready state, and is set to 0.2V. The backup power (voltage) for maintaining the backup state of the memory 13 and the like is set to 0.1 V per hour.

  In the order management table 60 of FIG. 6, the remaining amount of the backup power source 22 is 2.5V, whereas 4.95V (FIG. 6) is used to execute all timer reservation jobs at their designated times. Va) is necessary, backup power shortage has occurred, and reservation jobs (jobs whose total power consumption exceeds 2.5 V) for job Nos. C, D, and E cannot be executed.

  FIG. 7 shows an order management table 60a in the case where the same reserved jobs (job Nos. A to E) as in FIG. Since all the reserved jobs are executed simultaneously, the apparatus activation power 66b is only for one time. Further, if it is executed immediately when a power failure occurs, the backup power (voltage) 66c is all 0V. This saves 1.45V compared to the case of FIG. 6, and the total power consumption is reduced to 3.5V (Vb in FIG. 7). However, there is still power shortage exceeding the remaining power of 2.5 V of the backup power supply 22 and job Nos. D and E reservation jobs (total power consumption exceeding 2.5 V) cannot be executed. It has become.

  As described above, when all the reserved jobs cannot be executed with the power supplied from the backup power supply 22, the valid job selection request signal S 5 is output from the power supply control unit 23, and the job execution priority is set by the reserved job control unit 26. Based on the information (job attribute information), the execution order of the reserved jobs is changed, and the reservation jobs with higher execution priority are executed preferentially.

  In this example, the execution order is changed using job advancement priority information 67 indicating whether or not advancement is possible in the event of a power failure, and FIG. 8 shows the job execution based on the advancement possibility information 67. The order management table 60b is shown with the order changed. In the figure, the hatched portions indicate the time and power (voltage) portions affected by the change in the execution order.

  Originally, the execution order of the reservation job of job No. A whose execution order is No. 1 is not changed, but the job Nos. B and D set by the user to be able to be advanced can be executed simultaneously with the job No. A. In addition, the execution order 61 is changed to the first place, and the execution time 65 is changed to 21:00 at the same time as job No. A. As a result, when the time reaches 21:00, reservation jobs for job Nos. A, B, and D are continuously executed. If the user sets a reservation job with a high priority so that it can be advanced, the reservation job with a high priority can be surely executed even if a power failure occurs during the reservation.

  In the case of FIG. 8, 3.2 V is required to execute the reservation job of job No. C whose execution order is next to job No. A, B, D, which is the remaining amount of the backup power source 22. Since it exceeds .5V, the reservation jobs of job Nos. C and E are not executed by the power supply from the backup power source 22. However, since the backup power source 22 remains at 0.2 V when the reservation job for job No. D is completed, the backup state can be maintained for another 2 hours, and if the power failure is restored during that time, the job No. C , E is also secured for the reserved job.

  FIG. 9 shows an order management table 60c when the regular communication information 68 indicating whether regular (regular) communication is used as the job execution priority information. To execute all the reservation jobs, 3.4V is required. When the backup power source 22 (remaining amount: 2.5V) is insufficient, if it is executed in this order, the scheduled communication reservation job No. C becomes the backup power source. In 22, it becomes impossible to execute.

  Therefore, as shown in the order management table 60d in FIG. 10, based on the regular communication information 68, the execution order is determined and changed so that the reservation job with regular communication (circle in the figure) is preferentially executed. As a result, it is possible to reliably execute a periodic communication job with high priority (a reservation job of job No. C).

  Further, as shown in the order management table 60e of FIG. 11, a job execution order is determined by combining a plurality of job execution priority information such as advanceability information 67 and regular communication information 68 at the time of a power failure, and the job execution order is changed. Also good.

  The reservation job execution order may be controlled on the basis of the following information specified by the user, in addition to whether advance delivery is possible or whether regular communication is performed. For example, when a reservation job is input, the user is allowed to specify the priority (execution order) of the reservation job, and the execution order of the reservation job is controlled based on the specified priority. In addition, a setting relating to the confidential level of the document may be received, and the job execution order may be controlled so that the confidential document is preferentially executed.

  Further, in addition to what the user designates as described above, the job execution order may be controlled based on information held on the image forming apparatus 10 side. For example, the following control is possible.

[1] The predicted value of power consumption at the time of job execution is used as job execution priority information, and the job execution order is controlled according to the size. For example, a copy job or the like consumes a large amount of power for the fixing operation, so the priority is lowered, and a priority of a FAX transmission job or the like that consumes less power is increased.

[2] The job execution order is controlled using the job registration mode as the job execution priority information. For example, when the job registration is scanning of a document by the reading unit 15, the document remains at the user's hand and it is easy to re-enter the job by re-reading. Therefore, the job registration is performed using electronic data received from a personal computer. Lower priority than the job that received the job.

[3] In the case of a transmission job, the job execution order is controlled using the preset priority for each transmission destination as job execution priority information. For example, the priority is registered in the speed dial, and the priority is automatically determined to control the execution order of the reserved jobs.

[4] In the form in which the device is used for login, the user level (manager, general, etc.) at the time of login is automatically determined, and the job execution order is controlled according to the priority order set in advance for each user level. To do.

  Next, a reservation job execution flow while the power supply from the main power supply 21 is stopped will be described with reference to FIG.

  When power supply from the main power supply 21 is stopped due to a power failure or the like, the power supply control unit 23 backs up the power supply source to the memory 13 and the real-time clock 24, the timer reservation control unit 25, and the reserved job control unit 26 from the main power supply 21. While switching to the power source 22, the power supply to the CPU 11 and the like that consumes a large amount of power even during standby is stopped (step S301). In such a backup state, the power supply to the memory 13, the real-time clock 24, the timer reservation control unit 25, and the reserved job control unit 26 is gradually consumed, and the voltage level of the backup power supply 22 decreases slightly.

  When the backup power supply 22 is exhausted and the voltage level of the backup power supply 22 detected by the power supply control unit 23 decreases, and the voltage level becomes equal to or lower than a predetermined voltage value calculated and set before the power failure, the power supply The control unit 23 enables the power supply stop signal S2. In the case of the sample cases shown in FIGS. 3 and 4, when the voltage of the backup power supply 22 reaches 2.633 volts, the power supply stop signal S2 becomes valid.

  The timer reservation control unit 25 observes the states (valid / invalid) of the power supply stop signal S2 and the timer interrupt signal S4 while the power supply from the main power supply 21 is stopped. When the power supply stop signal S2 becomes valid during the observation (step S302; Yes 1), the timer reservation control unit 25 determines whether or not there is an unexecuted reserved job, whether the timer reservation signal S1 is valid / invalid. (Step S303).

  If the timer reservation signal S1 is valid (there is a reservation job) (step S303; valid), the timer reservation control unit 25 validates the timer reservation execution signal S3 (step S304). Also, when the timer interrupt signal S4 becomes valid before the power supply stop signal S2 becomes valid (execution date and time specified at the time of reservation has arrived) (step S302; existence 2), the timer reservation control unit 25 The timer reservation execution signal S3 is validated (step S304).

  When the timer reservation execution signal S3 becomes valid, the power supply control unit 23 starts supplying power from the backup power supply 22 to the CPU 11 and the like (step S305). The CPU 11 that has received power supply from the backup power source 22 executes the reservation job remaining in the memory 13 after being started in the execution order corresponding to the execution job information S6 from the reservation job control unit 26 (step S306). . At this time, every time the reserved job is executed, the voltage level of the backup power supply 22 is checked to determine whether or not the remaining reserved job can be completed with the remaining amount. If it is not possible, the next reserved job is not executed.

  Thereafter, the voltage level of the backup power supply 22 decreases with time, and the backup operation by the power supply control unit 23 is eventually stopped. As a result, the stored contents of the memory 13 disappear, but before that, the execution of the reservation job having a high priority is completed. When the main power supply 21 is restored before the stored contents of the memory 13 disappear and the power supply source is switched to the main power supply 21, the remaining reservation job is in accordance with the arrival of the execution date specified at the time of reservation. Each is executed.

  When the power supply from the main power supply 21 is resumed before the power supply stop signal S2 and the timer interrupt signal S4 become valid, the process shown in FIG. 12 is interrupted at that time. That is, when the main power supply 21 is restored before the scheduled job execution date and time and before the voltage level drops to the specified voltage value, and the power supply source is switched to the main power supply 21, each reserved job is Each is executed in accordance with the arrival of the execution date and time designated at the time of reservation. In this case, the execution order is not changed.

  As described above, when a reservation job is executed by the backup power source 22, the execution order of a plurality of reservation jobs is changed based on the attribute information of each job. The important reservation job disappears and the user is not inconvenienced greatly, and the user can submit the reservation job with peace of mind.

  Even if the power supply from the main power supply 21 is stopped, the execution date and time specified at the time of reservation can be used if the main power supply 21 has a relatively short power failure if the execution start time of the reserved job is delayed as much as possible. The function as a reservation job is secured. In the embodiment, since the job execution start is waited until the designated time of the reserved job whose execution order is first (for example, the reserved job of job No. A in FIG. 8) arrives, if the power failure is recovered before that, The execution date and time specified at the time of reservation can be respected.

  In addition to the above, the execution start time of the job may be delayed within a range in which the execution of a reserved job having a priority level equal to or higher than a predetermined value is ensured. For example, when the remaining power of the backup power supply has a margin of 1.0 V with respect to the power consumption (for example, 1.5 V) required for execution of a reservation job having a high priority, another reservation job ( For example, even if a reservation job requiring 0.8V for execution) can be executed further, a reservation job with a high priority after a backup operation of 1.0V (actually slightly lower than this) is performed. Start running.

  Further, based on the remaining voltage remaining when the maximum number of reserved jobs that can be completed by the backup power source 22 is executed, the job execution start time may be delayed by this remaining voltage. In the above example, a 0.8V job is further executed, and a delay corresponding to the remaining voltage of 0.2V is performed.

  The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration is not limited to that shown in the embodiment, and there are changes and additions within the scope of the present invention. Are also included in the present invention.

  For example, in the embodiment, the execution order of the reserved jobs is changed only when the remaining amount of the backup power source 22 is insufficient to execute all the reserved jobs (when the valid job selection request signal S5 is output). Although the determination is made based on the attribute (job execution priority information), if a reserved job is to be executed by the backup power source 22 regardless of whether the remaining amount of the backup power source 22 is insufficient or not, the reserved job is executed. The order may be determined based on job attributes (job execution priority information).

  In the embodiment, the voltage level necessary for execution of the reserved job is obtained as the specified voltage value, and the reserved job is forcibly executed when the voltage level of the backup power supply 22 matches the specified voltage value. In this case, the backup power source 22 is used up by executing the reservation job, the remaining amount becomes zero, and the subsequent processing cannot be performed at all. Therefore, the specified voltage value may have a slight margin. For example, in the case of a sample case, a voltage level obtained by adding a voltage value that can be measured by the real-time clock 24 for one day to 2.633 volts obtained by calculation may be set as the specified voltage value.

  In the embodiment, the predicted value of power consumption required to execute an unexecuted reservation job is obtained as the remaining amount (voltage level) of the backup power supply 22, but the power consumption itself may be obtained. You may obtain | require with the other parameter | index correlated with power consumption.

  In the embodiment, the predicted value of power consumption (specified voltage value) is derived from the job type and the number of pages. However, this is a method for obtaining the predicted value of power consumption required for execution of a reserved job. It is not limited to this, but may be obtained based on other factors, or may be obtained by combining more factors. In addition, the common use part and the part specific to each job are calculated separately, and the specified voltage value is obtained by the total. However, when multiple jobs are not executed in parallel, the common use part is calculated. There is no need to calculate separately.

  In the embodiment, after the power supply from the main power supply 21 is stopped, the voltage level of the backup power supply 22 is sequentially detected. However, when the power supply from the main power supply 21 is stopped (the backup from the main power supply 21). In response to the detection of switching to the power source 22, the remaining amount of the backup power source 22 is detected, and the remaining amount thereafter is the attenuation characteristic measured in advance (the power supplied to the backup power source stored in the characteristic value storage means not shown) The remaining amount of the backup power supply 22 may be predicted based on the characteristic value relating to the remaining amount).

  In the above-described embodiment, an example in which a plurality of reservation jobs are continuously executed at the same time has been shown. However, although the amount of consumption of the backup power supply 22 increases, it may be executed individually in some cases such as a special designation by the user You may let them.

  In addition, in the embodiment, the example in which the specified voltage value is derived by the power supply control unit 23 and the execution order is determined by the reserved job control unit 26 is shown, but other parts, for example, the CPU 11 calculates these, The calculation result may be stored in the memory 13 or notified to the power supply control unit 23.

  Even when the power supply from the main power supply 21 is stopped, if the predicted value of power consumption falls below the remaining power supply amount (= the valid job selection request signal S5 is invalid), it is designated for the reserved job. It is possible to execute the reservation jobs in the order based on the execution dates and the execution time as late as possible. By doing this, when the power supply stop of the main power supply 21 is relatively short, the execution date and time specified at the time of reservation can be observed, and the function as a reservation job can be secured, while the power supply stop of the main power supply is prolonged. Even if the reservation job is executed, the reservation job is executed without disappearing. Therefore, the reservation job disappears without being executed and the user is not disturbed greatly, and the user can input the reservation job with peace of mind.

  More specifically, a derivation unit for deriving a predicted value of power consumption necessary for completing execution of an unexecuted reserved job, a switching detection unit for detecting switching from the main power source to the backup power source, and the switching After the detection means detects the switching from the main power supply to the backup power supply, the remaining amount detection means for periodically detecting the remaining amount of power supplied by the backup power supply, and the supply power of the backup power supply detected by this remaining amount detection means It may be possible to provide a determination unit that determines that it is the execution time of an unexecuted reserved job when the remaining amount is lower than the predicted value of power consumption derived by the deriving unit. Then, when the job control unit causes the reserved job to be executed based on the execution order determined by the determination unit as exemplified in the embodiment, or when the determination unit determines that it is the execution time, It may be alternatively selected to execute a reserved job.

  Further, as another aspect, in accordance with detection of switching from the main power supply to the backup power supply by the switching detection means, remaining amount detection means for detecting the remaining amount of power supplied to the backup power supply, and power consumption derived by the derivation means The execution timing of the unexecuted reserved job after the switching detection means detects the switching from the main power supply to the backup power supply based on the predicted value of the power supply and the remaining amount of power supplied to the backup power supply detected by the remaining amount detection means. It is conceivable to provide a judging means for judging. Then, the job control unit executes the reserved job based on the execution order determined by the determining unit as exemplified in the embodiment, or executes the reserved job when the execution time comes. Alternatively, it may be selected.

  As yet another aspect, an unexecuted reservation job is executed while the power supply from the main power supply is stopped based on the predicted power consumption value derived by the deriving means and the remaining power supply amount of the backup power supply. Judgment means for judging time may be provided. Then, the job control unit executes the reserved job based on the execution order determined by the determining unit as exemplified in the embodiment, or executes the reserved job when the execution time comes. Alternatively, it may be selected.

  Whether the job control unit executes the job or not may be based on a user instruction, or the control unit automatically executes the job based on the operating condition or environmental condition of the apparatus. You may choose it.

1 is a block diagram illustrating a configuration of an image forming apparatus according to an embodiment of the present invention. 6 is a flowchart illustrating an operation of the image forming apparatus when a reserved job is set. 5 is a flowchart showing a prescribed voltage value derivation process performed by the image forming apparatus according to the embodiment of the present invention. It is explanatory drawing which illustrated the voltage conversion table referred when calculating a regulation voltage value. It is a flowchart which shows operation | movement of the reservation job control part when a valid job selection request signal becomes effective. It is explanatory drawing which shows an example of the order management table | surface which shows the relationship between the registration status of a reservation job, and the power consumption when each reservation job is sequentially performed according to designated time. FIG. 7 is an explanatory diagram showing an order management table in a case where the same reservation jobs as those in FIG. 6 are all continuously executed at the same time. It is explanatory drawing which shows an example of the order management table of the state which changed the execution order of the job based on the advancement possibility information. It is explanatory drawing which shows an example of an order management table in the case of using the regular communication information which shows whether it is regular (regular) communication as job execution priority information. It is explanatory drawing which shows an example of the order management table of the state which changed the execution order of the job based on regular communication information. It is explanatory drawing which shows an example of the order management table of the state which changed the execution order of the job based on the advancement possibility information and regular communication information. 5 is a flowchart of operations performed by the image forming apparatus according to the embodiment of the present invention while power supply from the main power supply is stopped.

Explanation of symbols

DESCRIPTION OF SYMBOLS S1 ... Timer reservation signal S2 ... Power supply stop signal S3 ... Timer reservation execution signal S4 ... Timer interruption signal S5 ... Valid job selection request signal S6 ... Execution job information 10 ... Image forming apparatus 11 ... CPU
12 ... ROM
DESCRIPTION OF SYMBOLS 13 ... Memory 14 ... Operation display part 15 ... Reading part 16 ... Image formation part 17 ... Communication part 18 ... Bus 21 ... Main power supply 22 ... Backup power supply 23 ... Power supply control part 24 ... Real time clock 25 ... Timer reservation control part 26 ... Reserved job control unit 30 ... printing voltage conversion table 40 ... communication voltage conversion table 50 ... common partial voltage conversion table 60 ... order management table

Claims (14)

In a job processing apparatus that has a main power supply and a backup power supply, and when the power supply from the main power supply is stopped, operation of the apparatus is enabled by power supply from the backup power supply.
Job reservation means for accepting reservations for reserved jobs with specified execution dates and times,
Detecting means for detecting an attribute of the reserved job;
A job processing apparatus comprising: a determination unit that determines an execution order when a plurality of reserved jobs are executed by the backup power source according to a detection result of the detection unit. The job processing apparatus according to claim 1, further comprising job control means for executing the reserved job by power supply from the backup power source based on the execution order determined by the determination means. Further comprising switching detection means for detecting switching from the main power supply to the backup power supply,
The job processing apparatus according to claim 1, wherein the determination unit determines the execution order according to detection of switching by the switching detection unit. The job processing apparatus according to claim 3, wherein the job control unit causes the reserved job to be executed in response to detection of switching by the switching detection unit. 5. The advance determination information indicating whether the reservation job can be executed before the execution date / time is one of the conditions for determining the execution order by the determination unit. 6. The job processing apparatus according to one. 5. The regular communication information indicating whether or not regular communication is performed for the reservation job is one of the conditions for determining the execution order by the determination unit. 6. Job processing unit. The attribute includes at least one of job registrant information, transmission destination information, confidentiality, job registration form, power usage amount for job execution, and job capacity. A job processing apparatus according to claim 1. The job according to any one of claims 1 to 7, further comprising designation means for designating whether or not the execution order of the reservation job is determined by the determination means. Processing equipment. A remaining amount detecting means for detecting a remaining amount of power supplied from the backup power source;
The job processing apparatus according to claim 1, further comprising: a derivation unit that derives a predicted value of power consumption required to complete execution of the unexecuted reserved job. . The job processing apparatus according to claim 9, wherein the determination unit determines the execution order when the predicted value of power consumption exceeds a remaining amount of the supplied power. 11. The reservation job is executed in the order based on the execution date and time specified for the reservation job when the predicted value of the power consumption is lower than the remaining amount of the supplied power. A job processing apparatus according to claim 1. Deriving means for deriving a predicted value of power consumption necessary for completing execution of the unexecuted reserved job;
Switching detection means for detecting switching from the main power source to the backup power source;
After the switching detection means detects the switching from the main power supply to the backup power supply, a remaining amount detection means for periodically detecting the remaining amount of power supplied by the backup power supply;
Judgment that it is determined that it is the execution timing of the unexecuted reserved job when the remaining amount of power supplied to the backup power source detected by the remaining amount detecting unit is lower than the predicted value of the power consumption derived by the deriving unit Means and
The job control unit causes the reserved job to be executed based on the execution order determined by the determining unit, or causes the reserved job to be executed when the determination unit determines that it is an execution time. The job processing apparatus according to claim 2. Deriving means for deriving a predicted value of power consumption necessary for completing execution of the unexecuted reserved job;
Switching detection means for detecting switching from the main power source to the backup power source;
Residual amount detecting means for detecting the remaining amount of power supplied from the backup power source in response to detection of switching from the main power source to the backup power source by the switching detection unit;
Based on the predicted value of the power consumption derived by the deriving unit and the remaining amount of power supplied to the backup power source detected by the remaining amount detecting unit, the switching detection unit switches from the main power source to the backup power source. Determining means for determining the execution time of the unexecuted reserved job after detecting
The job control unit causes the reserved job to be executed based on the execution order determined by the determining unit, or causes the reserved job to be executed when the execution time comes. The job processing apparatus according to 2. Deriving means for deriving a predicted value of power consumption necessary for completing execution of the unexecuted reserved job;
The execution timing of the unexecuted reservation job while the power supply from the main power supply is stopped based on the predicted value of the power consumption derived by the deriving means and the remaining power supply of the backup power supply. A judging means for judging,
The job control unit causes the reserved job to be executed based on the execution order determined by the determining unit, or causes the reserved job to be executed when the execution time comes. The job processing apparatus according to 2.

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