JP2013231849A - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

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JP2013231849A
JP2013231849A JP2012103732A JP2012103732A JP2013231849A JP 2013231849 A JP2013231849 A JP 2013231849A JP 2012103732 A JP2012103732 A JP 2012103732A JP 2012103732 A JP2012103732 A JP 2012103732A JP 2013231849 A JP2013231849 A JP 2013231849A
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job
execution
standby
unnecessary
image forming
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JP2012103732A
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JP5987457B2 (en
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Naoki Nishikawa
直希 西川
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Brother Ind Ltd
ブラザー工業株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide a technique which allows reduction of time required for power supply cut-off processing.SOLUTION: A control part of an image forming apparatus performs job determination processing (steps S15, S20) of determining, when a cut-off instruction for cutting off a power supply is received from a reception part, whether there is an execution job currently being executed and whether there is a waiting job waiting for the execution. If it is determined that there is an execution job and a waiting job by the job determination processing, it performs necessity determination processing (step S45) of determining whether there is a common unnecessary member which is not required for the execution of the execution job or the waiting job. If it is determined that there is a common unnecessary member by the necessity determination processing, it performs power stop processing (step S50) to stop supply of power from the power supply to the common unnecessary member.

Description

  The present invention relates to an image forming apparatus, and more particularly to a technique for cutting off a power source of an image forming apparatus at an accurate timing.
  Conventionally, for example, a technique described in Patent Document 1 is known as a technique for disconnecting the power source of an image forming apparatus at an appropriate timing. In the prior art document, when the power supply soft switch is turned off, the notification of power-off permission is given, and when the standby job (standby job) is received and the standby job is printed. Discloses a technique for shutting off the power supply when printing is completed.
JP 2009-271413 A
  However, in the technology of the above-mentioned prior art document, when the power cut-off permission notification is given and an input to print the standby job is received, the process of shutting off the power cannot be started until all the standby jobs are printed. It was. For this reason, there is a disadvantage that it takes a relatively long time to cut off the power.
  The present invention provides an image forming apparatus capable of reducing the time required for the process of turning off the power.
  The image forming apparatus disclosed in the present specification includes a plurality of function units used when executing various jobs, each function unit including at least one individual member, and the plurality of functions. An image forming apparatus comprising: a power source that supplies power to the unit; a receiving unit that receives a disconnection instruction to disconnect the power source; and a control unit that controls power supply from the power source to the plurality of functional units. The control unit, when receiving the disconnection instruction from the reception unit, a job determination process for determining whether there is an execution job being executed and whether there is a standby job waiting for execution; When it is determined that there is an execution job and a standby job in the job determination process, there is a common unnecessary member that is unnecessary for the execution of the execution job and the standby job for the plurality of functional units. And whether the judged unnecessary determination process, if it is determined that there is a common unnecessary members in the unnecessary determination process executes a power stop process of stopping the power supply from the power source to the common required member.
  According to this configuration, when it is determined that there is an execution job and a standby job when a disconnection instruction to turn off the power is received, and when it is determined that there is a common unnecessary member that is unnecessary for execution of the execution job and the standby job, the common unnecessary The power supply from the power source to the member is stopped. Therefore, if there is a member that is unnecessary for execution (common unnecessary member) in the execution job and the standby job, when the cutting instruction is received, that is, before the execution of the execution job and the standby job is finished, The power supply can be stopped. Therefore, it is possible to shorten the time required for the process of turning off the power.
In the image forming apparatus, the control unit may determine whether or not there is the standby job every time execution of the execution job is completed.
According to this configuration, every time execution of an execution job is completed, power supply to common unnecessary members can be stopped when there is a standby job. For this reason, it is possible to gradually increase unnecessary members that can stop power supply until the execution of all jobs is completed. As a result, it is possible to shorten the time required for the process of turning off the power source and to further reduce power consumption.
In the image forming apparatus, the control unit determines whether there are a plurality of standby jobs in the job determination process, and determines that there are a plurality of standby jobs. Among them, the change process for changing the execution order may be further executed so that the execution order of the standby job having a long execution time is set higher.
According to this configuration, the execution order of standby jobs having a long execution time is set at the top. For this reason, for example, a standby job with a long execution time can be executed first, and other standby jobs can be executed in parallel during the execution, thereby shortening the time until all jobs are completed. it can.
In the image forming apparatus, the control unit determines whether or not there are a plurality of standby jobs in the job determination process, and if it is determined that there are a plurality of standby jobs, the control unit is common to the execution job. The change process for changing the execution order may be further executed so that the standby job using the function unit is continuously executed.
According to this configuration, by continuously executing a standby job that uses a common functional unit, it is possible to stop power supply to functional units that are not necessary for the subsequent standby job at an early stage. That is, when standby jobs that use common functional units are executed in the standby order, it is necessary to maintain power supply to the common functional units until the last standby job is executed. Such a need is eliminated by continuously executing the standby job using the.
In the image forming apparatus, the control unit determines whether there are a plurality of standby jobs in the job determination process, and determines that there are a plurality of standby jobs. Among them, the change process for changing the execution order may be further executed so that the execution order of the standby job using the functional unit with large power consumption is higher.
According to this configuration, the standby job using the functional unit with high power consumption is executed in higher order, that is, the standby job using the functional unit with high power consumption is executed first. Therefore, it is possible to reduce power consumption until all jobs are completed.
The image forming apparatus may further include a transport roller that transports the paper and a fixing unit that fixes the toner image on the transported paper, and the control unit controls the temperature of the fixing unit in the change process. The execution order may be changed so that the execution order of the standby job using at least the heater to be raised and the motor that drives the transport roller is higher.
According to this configuration, the power of the heater and the motor can be cut off earlier by changing the execution order of the job using the heater and the motor (for example, the job using the image forming unit as the functional unit) to the upper level. it can. That is, since the power consumption of the heater and the motor is large, the power consumption until all jobs are completed can be reduced.
The image forming apparatus disclosed in the present specification includes a plurality of function units used when executing various jobs, each function unit including at least one individual member, and the plurality of function units. An image forming apparatus comprising: a power source that supplies power to the functional unit; a receiving unit that receives a disconnection instruction for disconnecting the power source; and a control unit that controls power supply from the power source to the plurality of functional units. The control unit determines whether there is an execution job being executed and whether there is a standby job waiting to be executed when the disconnection instruction is received from the reception unit. When there is an execution job in the process and the job determination process, and when it is determined that there is no standby job, there is an unnecessary member unnecessary for execution of the execution job for the plurality of functional units And executing unnecessary determination process to determine whether, when it is determined that there is an execution unnecessary members in said execution unnecessary determination process, executes a power stop process of stopping the power supply from said power supply to said execution unnecessary members.
According to this configuration, when a disconnection instruction for disconnecting the power supply is received, if there is an execution job and there is no standby job, the power supply to the execution unnecessary member can be stopped. As a result, the time required for the process of turning off the power can be shortened.
  According to the image forming apparatus of the present invention, since the power supply from the power source to the unnecessary member is stopped according to the determination result of the job determination process and the unnecessary member determination process, the time required for the process of cutting off the power source is reduced. Can be shortened.
External perspective view of a multifunction peripheral according to the present invention Block diagram schematically showing the electrical configuration of the MFP Table showing the relationship between jobs and functional parts The flowchart which shows each process of the power-off control process in Embodiment 1. Time chart showing an example of changing the execution order of standby jobs in the second embodiment
<Embodiment 1>
Next, Embodiment 1 will be described with reference to FIGS.
1. Configuration of MFP A first embodiment shows an example in which the image forming apparatus according to the present invention is applied to a so-called MFP having a printer function, a direct print function, a copy function, a facsimile function, a scanner function, and the like. . The functional configuration of the multifunction machine 1 is not limited to this. For example, the multifunction device 1 may not have the facsimile function and the direct print function.
  For example, the multifunction device 1 has an appearance as shown in FIG. 1, and an image forming unit 2, a document reading unit 3, and the like are accommodated in the main body 1 </ b> A of the multifunction device 1. An operation panel 4 is provided at the upper front of the multifunction device 1. The operation panel 4 includes a display unit 4A, various operation buttons 4B, a soft power key 4C, and the like on an LCD or the like.
2. Next, the electrical configuration of the multifunction machine 1 will be described. As shown in FIG. 2, the multi function device 1 includes a CPU 31, a ROM 32, a RAM 33, and an NVRAM (nonvolatile memory) 34. The multifunction device 1 includes, as other memory, for example, a hard disk (not shown) that stores various data.
  Connected to the CPU 31 are a network interface (hereinafter referred to as a network I / F) 35, a modem 36, an external media control unit 37, an image forming unit 2, a document reading unit 3, an operation panel 4, a power source 5, and the like. . The CPU 31 (an example of a control unit) controls each component of the multifunction device 1 while storing the processing result in the RAM 33 or the NVRAM 34 according to the control program read from the ROM 32.
  The ROM 32 stores various control programs for controlling the multifunction machine 1, various settings, initial values, and the like. The RAM 33 is used as a work area from which various control programs are read or as a storage area for temporarily storing image data. The NVRAM 34 stores various setting values.
  A personal computer PC or the like is connected to the network I / F 35, and mutual data is communicated with an external personal computer PC via the network I / F 35. The modem 36 is connected to a telephone line (not shown), and mutual data is communicated with an external facsimile machine or the like via the modem 36.
  The external media control unit 37 controls the external media storing the photo data when directly printing the photo data of the digital camera. The external media is mounted on, for example, an external media mounting portion (not shown) provided on the operation panel 4.
  The image forming unit 2 includes a known exposure unit, process cartridge, transfer unit, fixing unit 8 and the like, and forms an image on a predetermined sheet (recording medium) under the control of the CPU 31. The fixing unit 8 includes a heater 8A that raises the temperature, and fixes the toner image on the conveyed paper. The document reading unit 3 includes a known flat bed unit, ADF (automatic document feeder), a reading head, and the like, and reads a document to generate read data. The image forming unit 2 includes a conveyance roller 6 that conveys a sheet on which image formation is formed, and a motor 7 that drives the conveyance roller.
  The soft power key 4C of the operation panel 4 receives a disconnection instruction (hereinafter referred to as a power disconnection instruction) for disconnecting the power supply 5 by the user. The soft power key 4C is an example of a reception unit. The reception unit is not limited to the soft power key 4C. For example, in an image forming apparatus that can receive a power-off instruction from a computer PC, the network I / F 35 corresponds to a reception unit.
  The power supply 5 receives an AC voltage and generates various DC voltages from the AC voltage. An adapted DC voltage is supplied to each component of the MFP 1. The CPU 31 controls power supply from the power source 5 in accordance with the operation of the soft power key 4C.
3. Next, referring to FIG. 3 and FIG. 4, when receiving a power-off instruction, which is a characteristic configuration in the first embodiment, when the power source 5 is disconnected, that is, from the power source 5 The power-off control process when stopping the power supply to each part of the machine 1 will be described. The power-off control process is executed by the CPU 31 according to a predetermined program.
Here, as shown in FIG. 3, the plurality of jobs include a personal computer (PC) print job, a direct print job, a copy job, a facsimile (FAX) transmission job, a FAX reception job, a scan job, and the like. . Further, as shown in FIG. 3, an image forming unit 2, a document reading unit 3, a network interface (I / F) are used as a plurality of functional units each used at the time of executing various jobs and including at least one individual member. ) 35, modem 36, operation panel 4, and external media control unit 37.
For example, the image forming unit 2 includes an exposure unit, a process cartridge, a transfer unit, and a fixing unit 8 as individual members. The modem 36 itself corresponds to a functional unit, that is, a functional unit including one individual member. In this case, the functional unit and the individual member are the same. The terms “execution unnecessary member”, “standby unnecessary member”, and “common unnecessary member” are basically used corresponding to individual members. In addition, when a functional part consists of one individual member like the modem 36, each term will also correspond to a functional part.
  The plurality of jobs and the plurality of functional units illustrated in FIG. 3 are merely examples, and the plurality of jobs and the plurality of functional units are not limited to those illustrated in FIG.
  When the user operates the soft power key 4C and receives a power-off instruction from the soft power key 4C (step S10: YES), the CPU 31 determines whether or not there is an execution job being executed at this time (step S15). It is then determined whether there is a waiting job waiting for execution (step S20). Steps S15 and S20 correspond to job determination processing.
  Here, whether or not there is an execution job is determined, for example, based on whether or not the CPU 31 receives an instruction to execute any job via the operation panel 4 or the network I / F 35. Further, whether or not there is a standby job is determined by whether or not a print job is registered in the print queue in the RAM 33, which is a list of all print jobs waiting to be printed. Is called.
  When it is determined that there is no execution job (step S15: NO), the power supply from the power source 5 to each unit of the multifunction device 1 is stopped, that is, the power source 5 is turned off (step S65). For example, when the power supply 5 is configured by a switching power supply, the CPU 31 stops the switching operation of the power supply 5 and stops the generation of various DC voltages.
  On the other hand, when determining that there is an execution job (step S15: YES), the CPU 31 determines whether there is a standby job (step S20). When it is determined that there is no standby job (step S20: NO), it is determined whether there is an unnecessary member unnecessary for execution of the execution job (step S30: equivalent to execution unnecessary determination processing).
  When it is determined that there is no unnecessary member (step S30: NO), the power supply state is maintained as it is and the execution of the execution job is continued (step S55). On the other hand, if it is determined that there is an unnecessary member (step S30: YES), the power supply to the unnecessary member is stopped (corresponding to step S35: power stop process). Specifically, the power supply from the power source 5 to at least a part of the execution unnecessary members is stopped.
  For example, when the power-off instruction is received, if the execution job is a PC print according to a command from the PC and there is no standby job, the document reading unit 3, the modem 36, the operation panel 4 and the external media control unit 37 execute It corresponds to an unnecessary member, and power supply to them is stopped. Specifically, the power supply path from the power supply 5 to each execution-unnecessary member is interrupted by controlling a connection changeover switch such as a relay.
  Here, at least a part of the execution unnecessary members is, for example, at least a part of the image forming unit 2, for example, an exposure unit, when the functional unit is the image forming unit 2 composed of a plurality of members. Means. Therefore, for example, when the power-off instruction is received, if the execution job is a PC print according to a command from the PC and there is no standby job, the power supply to the exposure unit is stopped if the exposure process is completed. May be.
  In this way, when the power-off instruction is received and there is an execution job and there is no standby job, the power supply to the execution-unnecessary member can be stopped. As a result, it is possible to shorten the time required for the process of turning off the power source and reduce power consumption.
  On the other hand, if it is determined in step S20 that there is a standby job (step S20: YES), it is determined whether or not there is an unnecessary member unnecessary for execution of the execution job, as in step S30 (step S25). If it is determined that there is no unnecessary member (step S25: NO), the execution of the execution job is continued (step S55). On the other hand, if it is determined that there is an unnecessary member (step S25: YES), it is determined whether or not there is a standby unnecessary member unnecessary for execution of the standby job (step S40).
  If it is determined that there is no standby unnecessary member (step S40: NO), the power supply state is maintained as it is and the execution of the execution job is continued (step S55). On the other hand, when it is determined that there is a standby unnecessary member (step S40: YES), the CPU 31 determines whether there is a common unnecessary member included in common with the execution unnecessary member and the standby unnecessary member (step S45). Here, the processing of steps S25, S40, and S45 corresponds to “unnecessary determination processing” for determining whether there is a common unnecessary member that is unnecessary for execution of the execution job and the standby job. Thus, in this embodiment, although the example which performs an unnecessary judgment process according to three steps of step S25, S40, and S45 was shown, it is not restricted to this, You may make it perform in one step.
  If it is determined that there is no common unnecessary member (step S45: NO), since the unnecessary member is used in the standby job, the execution of the execution job is continued while maintaining the power supply state (step S55). This case corresponds to, for example, a case where the execution job is a PC print job and the standby job is a direct print job and a FAX transmission job (see FIG. 3). On the other hand, when it is determined that there is a common unnecessary member (step S45: YES), power supply to the common unnecessary member is stopped (step S50). For example, when the execution job is a PC print job and the standby job is a copy job, the modem 36 and the external media control unit 37 correspond to common unnecessary members (see FIG. 3), and the modem 36 and the external media control unit 37. The power supply to is stopped.
  In this way, for individual members that are commonly included in the unnecessary execution member and the standby unnecessary member, that is, common unnecessary members that are not used in the execution job and the standby job, the power supply is stopped when the power-off instruction is received. be able to. Therefore, it is possible to shorten the time required for the process of turning off the power and reduce the power consumption.
  Next, when the execution of the execution job (step S55) ends, the CPU 31 determines whether there is a standby job (step S60). If it is determined that there is a waiting job (step S60: YES), the process returns to step S25, and the processes from step S25 to step S60 are repeated.
  Thus, every time execution of the execution job is completed, the CPU 31 determines whether or not there is a standby job (step S60). If it is determined that there is a standby job, the CPU 31 executes step S25 and step S40. Then, an unnecessary determination process (step S45) is executed. When there is a common unnecessary member (step S45: YES), the power supply to the common unnecessary member can be stopped. Therefore, it is possible to gradually increase the number of individual members that can stop the power supply until the execution of all jobs is completed. As a result, it is possible to shorten the time required for the process of cutting off the power source and to further reduce the power consumption.
  On the other hand, when it is determined that there is no standby job (step S60: NO), the power supply 5 is turned off (step S65), assuming that the execution of all jobs upon receiving the power-off instruction is completed. The power supply 5 is disconnected by, for example, stopping generation of a DC voltage by the power supply 5. Further, the power supply path from the power source 5 to the individual member is performed by being cut off by controlling a connection changeover switch such as a relay.
4). Effect of Embodiment 1 When it is determined that there is an execution job and a standby job when a power-off instruction is received, and it is determined that there is a common unnecessary member unnecessary for execution of the execution job and the standby job, power to the common unnecessary member The power supply from is stopped. Therefore, if there is a member unnecessary for execution (common unnecessary member) in the execution job and the standby job, when the power-off instruction is received, that is, before the execution of the execution job and the standby job is finished, The power supply can be stopped. Therefore, it is possible to shorten the time required for the process of turning off the power. In addition, when the power-off instruction is received, if there is an execution job and there is no standby job, the power supply to the execution-unnecessary member can be stopped. As a result, the time required for the process of turning off the power can be shortened.
  Specifically, when the CPU 31 receives the power-off instruction, it determines that there are execution jobs and standby jobs (steps S15 and S20: YES), and when it is determined that there are unnecessary execution members and standby unnecessary members ( If it is determined that there is a common unnecessary member (step S45: YES), the power supply from the power source to the common unnecessary member is stopped (step S50). When the CPU 31 receives the power-off instruction, the CPU 31 determines that there is an execution job (step S15: YES), determines that there is no standby job (step S20: NO), and determines that there is an unnecessary member. (Step S30: YES), the power supply from the power source to the execution unnecessary member is stopped (Step S35). Therefore, it is possible to shorten the time required for the process of turning off the power and reduce the power consumption.
<Embodiment 2>
Next, Embodiment 2 will be described with reference to FIG. The second embodiment is different from the first embodiment only in part of the power-off control process, and the difference will be described.
  In the second embodiment, for example, the CPU 31 determines whether or not there are a plurality of standby jobs in the process (job determination process) of step S20 in FIG. A change process for changing the execution order of the standby jobs is further executed. Usually, members required for execution of a standby job differ depending on each standby job. Further, the operation time and power consumption required for executing the standby job of each functional unit are different. Therefore, by changing the execution order of a plurality of standby jobs, it is possible to reduce time and power consumption until all jobs are completed.
  For example, as shown in FIG. 5, it is assumed that when a power-off instruction is received, a PC print job, FAX transmission job, and copy job are in this execution order as a plurality of standby jobs. At that time, as shown in FIG. 5, for example, the CPU 31 changes the execution order in the order of PC print job → copy job → FAX transmission job by changing the order of the queue. Here, an example is shown in which the CPU 31 changes the execution order so that the execution order of a standby job using a functional unit with large power consumption among the plurality of standby jobs is higher. That is, since the image forming unit 2 with high power consumption is not used in the FAX transmission job, the execution order of the copy job and the FAX transmission job is changed.
  Therefore, as shown in FIG. 5, the power supply to the image forming unit 2 is stopped at time t4 before the order change, but the power supply to the image forming unit 2 is stopped after the order change. Can be performed at time t2. Specifically, the power supply to the heater 8A and the transport roller (motor) 6 of the image forming unit 2 can be stopped earlier by the period K1. Thereby, power consumption can be reduced.
  Normally, as a process after the printing operation, cleaning of the photosensitive drum is performed in the electrophotographic method, or driving of the print head cap is performed in the ink jet method, and therefore, from time t1 to time t2 in FIG. The post-print operation post-processing time Kd is required. Therefore, as shown in FIG. 5, before the order change, the power supply to the entire multi-function peripheral (device) is stopped, that is, the power-off time is time t5. The power supply can be stopped at time t3 earlier by the period K2. Thereby, power consumption can be reduced. Furthermore, the power-off time can be advanced by the period K2.
4). Effects of Second Embodiment The CPU 31 changes the execution order so that the execution order of standby jobs using a functional unit with large power consumption among the plurality of standby jobs is higher. As described above, the standby job using the functional unit with high power consumption is ranked higher, that is, the standby job using the functional unit with high power consumption is executed first. Therefore, it is possible to reduce power consumption until all jobs are completed. In addition, since a job using the image forming unit 2 usually requires a post-printing processing time Kd, a power off instruction is executed by executing a job using the image forming unit 2 first like a copy job. The time it takes for the power to be cut off after receiving the power can be shortened.
  Further, by changing the execution order of the FAX transmission job and the copy job, a copy job (standby job) using at least the heater 8A of the fixing unit 8, for example, a halogen heater, and the motor 7 for driving the transport roller 6 is executed. The execution order is changed so that the order is higher.
  In this way, the power supply to the heater 8A and the motor 7 is stopped earlier by changing the execution order of the job using the heater 8A and the motor 7, that is, the job using the image forming unit 2 as a functional unit to the higher order. can do. That is, since the power consumption of the heater 8A and the motor 7 is usually large, it is possible to reduce the power consumption from when the power-off instruction is received until all jobs are completed.
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
  (1) In the second embodiment, when the execution order of a plurality of standby jobs is changed, that is, in the change process, the execution order of standby jobs using a functional unit with large power consumption among the plurality of standby jobs is changed. Although an example in which the execution order is changed so as to be higher is shown, the present invention is not limited to this.
For example, the execution order may be changed so that the execution order of a standby job having a long execution time among the plurality of standby jobs is higher.
In this case, the execution order of standby jobs having a long execution time is set higher. For this reason, it is possible to execute a standby job with a long execution time first, and execute other standby jobs in parallel during the execution, for example. It is possible to shorten the time (power-off time) required from when the instruction is received until the power source 5 is turned off.
Alternatively, the execution order may be changed so that a standby job using a common functional unit is continuously executed.
In this case, a standby job using a common functional unit, for example, a standby job using the image forming unit 2 as a common individual member, for example, a subsequent standby job by continuously executing a PC print job and a copy job For example, the power supply to the image forming unit 2 (functional unit) that is not necessary for the FAX transmission job can be stopped at an early stage. That is, when standby jobs that use the image forming unit 2 (common functional units) are executed in the standby order, it is necessary to maintain power supply to the image forming unit 2 until the last standby job is executed. However, such a need is eliminated by continuously executing the standby job using the common functional unit. Here, the “standby job using a common functional unit” includes the same standby job. That is, the execution order may be changed so that the same standby job, for example, a plurality of PC print jobs, is continuously executed.
DESCRIPTION OF SYMBOLS 1 ... MFP, 2 ... Image formation part, 4 ... Operation panel, 5 ... Power supply, 6 ... Conveyance roller, 7 ... Motor, 8 ... Fixing part, 8A ... Heater, 31 ... CPU, 35 ... Network I / F, 36 ... Modem, 37 ... External media controller

Claims (7)

  1. A plurality of functional units used when executing various jobs, each functional unit including at least one individual member;
    A power source for supplying power to the plurality of functional units;
    A reception unit that receives a disconnection instruction to disconnect the power;
    An image forming apparatus comprising: a control unit that controls power supply from the power source to the plurality of functional units;
    The controller is
    When receiving the disconnection instruction from the reception unit,
    Job determination processing for determining whether there is an execution job being executed and whether there is a standby job waiting to be executed;
    When it is determined that there is an execution job and a standby job in the job determination process, an unnecessary determination process for determining whether there is a common unnecessary member unnecessary for execution of the execution job and the standby job for the plurality of functional units. When,
    When it is determined that there is a common unnecessary member in the unnecessary determination process, a power stop process for stopping power supply from the power source to the common unnecessary member;
    An image forming apparatus that executes
  2. The image forming apparatus according to claim 1.
    The control unit is an image forming apparatus that determines whether or not there is the standby job every time execution of the execution job is completed.
  3. The image forming apparatus according to claim 1, wherein:
    The controller is
    In the job determination process, it is determined whether there are a plurality of the standby jobs,
    When it is determined that there are a plurality of standby jobs, the change processing is further executed to change the execution order so that the execution order of the standby jobs having a long execution time among the plurality of standby jobs is higher. Forming equipment.
  4. The image forming apparatus according to claim 1, wherein:
    The controller is
    In the job determination process, it is determined whether there are a plurality of the standby jobs,
    An image forming apparatus that further executes a changing process for changing the execution order so as to continuously execute a standby job that uses a functional unit common to the execution job when it is determined that there are a plurality of standby jobs.
  5. The image forming apparatus according to claim 1, wherein:
    The controller is
    In the job determination process, it is determined whether there are a plurality of the standby jobs,
    A change process for changing the execution order so that, when it is determined that there are a plurality of standby jobs, among the plurality of standby jobs, the execution order of the standby jobs using a functional unit with large power consumption is ranked higher; An image forming apparatus to be executed.
  6. The image forming apparatus according to any one of claims 3 to 5,
    A transport roller for transporting paper;
    A fixing unit that fixes a toner image on the conveyed paper;
    In the change process, the control unit changes the execution order so that the execution order of the standby job using at least a heater that raises the temperature of the fixing unit and a motor that drives the transport roller is higher. An image forming apparatus.
  7. A plurality of functional units used when executing various jobs, each functional unit including at least one individual member;
    A power source for supplying power to the plurality of functional units;
    A reception unit that receives a disconnection instruction to disconnect the power;
    An image forming apparatus comprising: a control unit that controls power supply from the power source to the plurality of functional units;
    The controller is
    When receiving the disconnection instruction from the reception unit,
    Job determination processing for determining whether there is an execution job being executed and whether there is a standby job waiting to be executed;
    When it is determined in the job determination process that there is an execution job and there is no standby job, execution for determining whether there is an unnecessary member unnecessary for execution of the execution job for the plurality of functional units Unnecessary judgment processing,
    When it is determined in the execution unnecessary determination process that there is an execution unnecessary member, a power stop process for stopping power supply from the power source to the execution unnecessary member;
    An image forming apparatus that executes
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004220514A (en) * 2003-01-17 2004-08-05 Canon Inc Image forming apparatus
JP2006072972A (en) * 2004-08-06 2006-03-16 Canon Inc Image processing device, image processing method
JP2011053667A (en) * 2009-08-04 2011-03-17 Ricoh Co Ltd Image forming apparatus, control method and control program of the same, and computer readable recording medium recording the control program of the image forming apparatus
JP2012006306A (en) * 2010-06-25 2012-01-12 Canon Inc Printing apparatus, method for control of the same, and program

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004220514A (en) * 2003-01-17 2004-08-05 Canon Inc Image forming apparatus
JP2006072972A (en) * 2004-08-06 2006-03-16 Canon Inc Image processing device, image processing method
JP2011053667A (en) * 2009-08-04 2011-03-17 Ricoh Co Ltd Image forming apparatus, control method and control program of the same, and computer readable recording medium recording the control program of the image forming apparatus
JP2012006306A (en) * 2010-06-25 2012-01-12 Canon Inc Printing apparatus, method for control of the same, and program

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