Image forming apparatus
The image forming apparatus optimizes power consumption by transitioning to sleep mode based on detected device information requests and print job parameters, reducing standby power usage and enhancing user convenience.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2026-03-05
AI Technical Summary
Existing image forming devices suffer from inefficient power consumption during standby and operation, which can result in unnecessary power consumption during standby and operation, which can result in inefficient power consumption during standby and operation, which can result in inefficient power consumption during standby and operation, which can result in unnecessary power consumption during standby and operation, which can result in inefficient power consumption during standby and operation.
An image forming apparatus that includes a network transceiver to receive print jobs and device information requests, a print data command analysis unit to analyze print jobs, a detection unit to detect device information requests, a main control unit to manage device states, and a power saving control unit to manage power saving states, allowing the device to transition to sleep mode based on detected requests and print job parameters to reduce power consumption.
The solution reduces unnecessary power consumption during standby and improves user convenience by allowing the device to transition to sleep mode only when necessary, based on detected device information requests, thus optimizing power usage.
Smart Images
Figure 2026035946000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to an image forming apparatus, and more particularly to an image forming apparatus having a power saving function. [Background technology]
[0002] Conventionally, some image forming apparatuses are configured to transition from a normal mode to a sleep mode (also called a sleep state) after printing is completed based on a plurality of preset sleep transition times (see, for example, Patent Document 1). [Prior art documents] [Patent documents]
[0003] [Patent Document 1] JP 2018-43620 A (Page 6, Figure 1) Summary of the Invention [Problem to be solved by the invention]
[0004] However, in the conventional method described above, the image forming device transitions to sleep mode after a preset sleep transition time has elapsed, which can result in unnecessary consumption of power generated during the standby state after printing is completed until the device transitions to sleep mode.
[0005] SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an object of the present invention is to provide an image forming apparatus that reduces unnecessary power consumption during standby and improves convenience for users. [Means for solving the problem]
[0006] The image forming apparatus of the present invention comprises: An image forming apparatus communicably connected to a first host device and a second host device via a communication network, a network transceiver that receives a print job or a request for device information indicating a status of the image forming device transmitted from the first host device and the second host device via the communication network; a print data command analysis unit that analyzes the print job and acquires parameter information associated with the print job; a detection unit that detects whether or not there is a request for the device information from the first higher-level device or the second higher-level device; a main control unit that controls the state of the image forming apparatus; a power saving control unit that transmits a sleep instruction signal to the main control unit to transition the state of the image forming apparatus to a sleep state; and the parameter information associated with the print job from the first host device includes instruction information for causing the image forming device to start transitioning to the sleep state when a predetermined time has elapsed since the end of printing based on the print job; If the detection unit does not detect a request for the device information from the second higher-level device until the predetermined time has elapsed since the start of the printing, the power saving control unit transmits the sleep instruction signal to the main control unit based on the instruction information; When the detection unit detects a request for the device information from the second host device between the start of the printing and the lapse of the predetermined time, the power saving control unit transmits to the main control unit an extension instruction signal for delaying the start of the transition to the sleep state from the lapse of the predetermined time. It is characterized by: [Effects of the Invention]
[0007] According to the present invention, it is possible to provide an image forming apparatus that reduces unnecessary power consumption during standby and improves user convenience. [Brief explanation of the drawings]
[0008] [Figure 1] 1 is a block diagram showing a configuration of a printer as an image forming apparatus according to a first embodiment. [Figure 2] 10 is a flowchart illustrating an example of the operation of the printer. [Figure 3] FIG. 10 illustrates an example of a printer driver setting screen. [Figure 4] FIG. 10 is a diagram illustrating an example of parameter information associated with a print job. [Figure 5] 4 is a time chart showing an example of the operation of the printer. [Figure 6] FIG. 10 is a block diagram showing the configuration of a printer as an image forming apparatus according to a second embodiment. [Figure 7] 10 is a flowchart illustrating an example of the operation of the printer. [Figure 8] 4 is a time chart showing an example of the operation of the printer. [Figure 9] 10 is a flowchart illustrating an example of the operation of the printer. [Figure 10] 4 is a time chart showing an example of the operation of the printer. [Figure 11] FIG. 11 is a block diagram showing the configuration of a printer as an image forming apparatus according to a third embodiment. [Figure 12] 10A and 10B are diagrams illustrating an example of information displayed on an operation display unit of a printer. DETAILED DESCRIPTION OF THE INVENTION
[0009] First Embodiment The configuration of this embodiment will be described below with reference to FIG. FIG. 1 is a block diagram showing the configuration of a printer 100 as an image forming apparatus according to the first embodiment. The printer 100 is communicably connected to a plurality of host devices via a communication network (also simply referred to as a "network"). Each host device is, for example, a host PC, such as a computer operated by a user of the printer 100. When printing with the printer 100, the user inputs a print instruction (also referred to as a print job) to the host device. In this embodiment, the printer 100 is communicably connected to a first host device and a second host device via the communication network.
[0010] The printer 100 has a network transmission / reception unit 101, a print data command analysis unit 102, a print data editing / expansion unit 103, a main control unit 104, a parameter control unit 105, a RAM (volatile memory unit) 106, an EEPROM (non-volatile memory unit) 107, a power saving control unit 108, an engine unit 109, and a detection unit 110.
[0011] Next, the components of the printer 100 will be described. The network transmission / reception unit 101 receives print jobs transmitted from the first and second higher-level devices via the communication network or requests for device information indicating the status of the printer 100. The received print jobs are stored in the RAM 106.
[0012] Device information refers to information that indicates the state of the printer 100. The state of the printer 100 is, for example, a "sleep state" in which the printer is in a power-saving state and waits for a request from a higher-level device, a "startup state" in which the printer has returned from a sleep state and is ready to start printing immediately, or the size of paper placed in the tray. The state of the printer 100 may include states other than these.
[0013] The print data command analysis unit 102 acquires a print job from the network transmission / reception unit 101 or RAM 106. When the print data command analysis unit 102 acquires a print job stored in RAM 106, the print data command analysis unit 102 may acquire the print job via the print data editing / expanding unit 103, or may acquire the print job directly from RAM 106.
[0014] The print data command analysis unit 102 analyzes the print job and acquires parameter information associated with the print job. For example, the print data command analysis unit 102 analyzes the PJL (Print Job Language) portion of the print job. The analysis result is stored in the EEPROM 107 via the parameter control unit 105.
[0015] The print data editing and expanding unit 103 edits or expands the video data included in the print job in the RAM 106 . The print data editing and expanding unit 103 analyzes the PDL (Page Description Language) portion of the print job stored in the RAM 106 , and edits and expands the video data on the RAM 106 .
[0016] The main control unit 104 generally controls the operations between the components, for example, the state of the printer 100.
[0017] The parameter control unit 105 stores the parameter information acquired from the print data command analysis unit 102 in the EEPROM 107 and references the parameter information from the EEPROM 107 .
[0018] The power saving control unit 108 controls the transition to and return from power saving states (power save state, sleep state) of the printer 100, and performs power saving control in each state. For example, the power saving control unit 108 transmits a signal (sleep instruction signal) to the main control unit 104 to transition the state of the printer 100 to the sleep state.
[0019] The engine unit 109 prints on a medium the video data expanded on the RAM 106. The engine unit 109 is, for example, an image forming engine for forming an image on a medium using toner or ink.
[0020] The detection unit 110 detects whether or not there is a request for device information from the first higher-level device or the second higher-level device. For example, the detection unit 110 detects whether or not there is a request for device information from the first higher-level device and the second higher-level device.
[0021] Next, the operation of the printer 100 according to the first embodiment will be described below. FIG. 2 is a flowchart showing an example of the operation of the printer 100. FIG. 3 is a diagram showing an example of the printer driver setting screen. FIG. 4 is a diagram illustrating an example of parameter information associated with a print job. FIG. 5 is a time chart showing an example of the operation of the printer 100.
[0022] When a first user prints using printer 100, a PJL command 401 is input to the printer driver from a first host PC, which serves as a first higher-level device operated by the first user. The PJL command 401 is instruction information for causing printer 100 to transition to a sleep state after a predetermined time T1 has elapsed since printing based on the print job ended. As a result, the parameter information associated with the print job from the first higher-level device includes the PJL command 401 as instruction information for causing printer 100 to begin transitioning to a sleep state after the predetermined time T1 has elapsed since printing based on the print job ended.
[0023] The predetermined time T1 can be set in advance in the printer 100. In this embodiment, the predetermined time T1 is, for example, two minutes. The predetermined time T1 may also be the time during which printing is being performed.
[0024] In the example shown in Fig. 3, the PJL command 401 is "Go to sleep mode immediately after printing" or "Go to sleep mode after a specified time after printing." Therefore, in the example shown in Fig. 3, the first user selects either "Go to sleep mode immediately after printing" or "Go to sleep mode after a specified time after printing" in the check box 301 on the printer driver from the first host PC. Here, the explanation will continue assuming that "Go to sleep mode immediately after printing" is checked.
[0025] After checking "Go to sleep mode immediately after printing," when printing is executed on the printer driver, a PJL command 401 as shown in FIG. 4 is associated with the print job and sent to the printer 100.
[0026] Next, the operation of the printer 100 will be described. When the network transmission / reception unit 101 receives a print job transmitted from the first higher-level device, it requests the print data command analysis unit 102 to analyze the print job.
[0027] In step S201, the print data command analysis unit 102 acquires a print job from the network transmission / reception unit 101 and analyzes the print job (step S201).
[0028] In step S202, the print data command analysis unit 102 determines whether ENABLE is set in the specific parameter (OKISLEEPAFTERPRINT) (step S202).
[0029] If ENABLE is set in the specific parameter (OKISLEEPAFTERPRINT), the print data command analysis unit 102 requests the parameter control unit 105 to update the parameter information, and the process proceeds to step S203. If ENABLE is not set in the specific parameter (OKISLEEPAFTERPRINT), the process proceeds to step S204.
[0030] In step S203, upon receiving the request to update the parameter information, parameter control unit 105 updates the parameter information of the print job being executed (step S203).
[0031] In step S204, the main control unit 104 requests the print data editing and expansion unit 103 to edit and expand the print job, expands the video data on the RAM 106, and then transfers the video data to the engine unit 109, which then executes printing (step S204).
[0032] If printing is completed in engine unit 109 (YES in step S205), the process proceeds to step S206.
[0033] In step S206, the main control unit 104 refers to the information of the specific parameter (OKISLEEPAFTERPRINT) via the parameter control unit 105 and checks whether it is ENABLE (step S206).
[0034] In step S207, the detection unit 110 determines whether or not a request for device information from a second host PC as a second higher-level device operated by a second user has been detected within a predetermined time T1 from the start of printing (step S207).
[0035] If the detection unit 110 detects a request for device information from the second higher-level device until the predetermined time T1 has elapsed since the start of printing (YES in step S207), the process proceeds to step S208. The predetermined time T1 may be, for example, until the end of printing.
[0036] If the detection unit 110 does not detect a request for device information from the second higher-level device until the predetermined time T1 has elapsed since the start of printing (NO in step S207), the process proceeds to step S209.
[0037] In step S208, the detection unit 110 requests the parameter control unit 105 to update the parameter information so as to change the specific parameter (OKISLEEPAFTERPRINT) to DISABLE, and requests the power saving control unit 108 to start transitioning to the sleep state when a specified time T2 (also referred to as a first specified time) has elapsed (step S208). The specified time T2 is, for example, two minutes. The power saving control unit 108 transmits an extension instruction signal to the main control unit 104 to delay the start of transitioning to the sleep state from the predetermined time T1.
[0038] The power saving control unit 108 instructs the printer 100 to start transitioning to the sleep state when a specified time T2 has elapsed after a predetermined time T1 has elapsed since the start of printing. In this case, the power saving control unit 108 sends an extension instruction signal to the main control unit 104 to instruct the printer 100 to transition to the sleep state when the specified time T2 has elapsed after the predetermined time T1 has elapsed since the start of printing. Based on the extension instruction signal, the main control unit 104 causes the printer 100 to start transitioning to the sleep state when the specified time T2 has elapsed after the predetermined time T1 has elapsed since the start of printing. This allows the printer 100 to execute printing based on a print job from a second host device after printing based on a print job from a first host device has finished, but before transitioning to the sleep state.
[0039] In step S209, the detection unit 110 requests the power saving control unit 108 to start transitioning to a sleep state based on the PJL command 401 as instruction information, and the power saving control unit 108 sends a sleep instruction signal to the main control unit 104 based on the PJL command 401 as instruction information (step S209). The main control unit 104 starts transitioning the printer 100 to a sleep state based on the sleep instruction signal.
[0040] Although not shown, after printing, when a near-end warning for a consumable item occurs, or when the printer 100 is being operated, even if the main control unit 104 requests that the printer 100 transition to a sleep state, the power saving control unit 108 may not transition to a sleep state immediately, but may request the main control unit to start transitioning to a sleep state after a specified time (2 minutes).
[0041] As described above, according to the first embodiment, after printing based on a print job from a first higher-level device has finished, printing based on a print job from a second higher-level device can be executed before the printer 100 transitions to a sleep state. In other words, when printing based on a print job from a second higher-level device is executed after printing based on a print job from a first higher-level device has finished, the printer 100 can be prevented from returning from a sleep state to an active state. This makes it possible to reduce unnecessary power consumption that occurs when the printer 100 is in a standby state, and to provide a printer 100 that is more convenient for users.
[0042] Second Embodiment The configuration of this embodiment will be described below with reference to FIG. FIG. 6 is a block diagram showing the configuration of a printer 600 as an image forming apparatus according to the second embodiment. In this embodiment, the description of the same parts as in the first embodiment will be omitted, and only the components different from those in the first embodiment will be described. The printer 600 further includes a generation unit 611 in addition to the components of the printer 100 described in the first embodiment.
[0043] The generation unit 611 generates a command (designated time change signal) to change the time from the end of printing to the transition to sleep mode to designated time T3 (also called second designated time), which is shorter than designated time T2 (also called first designated time).
[0044] Next, the operation of the printer 600 according to the second embodiment will be described below. Note that, with regard to the operation of the printer 600, the description of the same parts as in the first embodiment will be omitted, and only the operations different from the first embodiment will be described. FIG. 7 is a flowchart showing an example of the operation of the printer 600. FIG. 8 is a time chart showing an example of the operation of the printer 600.
[0045] In step S709, if the printer 600 (e.g., the detection unit 110) has not received the print job from the second higher-level device by the time printing is completed, the generation unit 611 generates a designated time change signal. The second designated time T3 is shorter than the first designated time T2.
[0046] In step S710, the generation unit 611 sends a designated time change signal to the power saving control unit 108. The power saving control unit 108 sends a signal to the main control unit 104 to instruct the printer 600 to start transitioning to the sleep state when the designated time T3 has elapsed since the end of printing. The main control unit 104 controls the printer 600 to transition to the sleep state after the designated time T3 has elapsed since the end of printing, based on the designated time change signal sent from the power saving control unit 108. The main control unit 104 starts transitioning the printer 600 to the sleep state when the designated time T3 has elapsed since the end of printing, based on the signal sent from the power saving control unit 108.
[0047] As described above, according to the second embodiment, even if the printer 600 detects a request for device information from a second higher-level device, if the second higher-level device does not send a print job to the printer 600, the time until the printer 600 goes into sleep mode can be shortened, unnecessary power consumption that occurs in standby mode can be suppressed, and a printer 600 that is more convenient for users can be provided.
[0048] Third Embodiment In this embodiment, the description of the same parts as in the second embodiment will be omitted, and only the operations different from those in the second embodiment will be described. FIG. 9 is a flowchart showing an example of the operation of the printer 600. FIG. 10 is a time chart showing an example of the operation of the printer 600. In step S711, the printer 600 (for example, the detection unit 110) checks whether or not there is another request for device information from the second higher-level device by the time printing is completed.
[0049] In step S712, the printer 600 (e.g., the detection unit 110) determines whether it has detected a second request for device information from the second higher-level device. If the printer 600 (e.g., the detection unit 110) has not detected a second request for device information from the second higher-level device by the time printing ends (NO in step S712), the process proceeds to step S209, and the main control unit 104 starts transitioning the printer 600 to a sleep state when a specified time T3 has elapsed since printing ended, based on a signal sent from the power saving control unit 108.
[0050] If the printer 600 (for example, the detection unit 110) detects another request for device information from the second higher-level device by the time printing is completed (YES in step S712), the process proceeds to step S713.
[0051] In step S713, the power saving control unit 108 sends an extension instruction signal to the main control unit 104 to delay the start of the transition to the sleep mode after the predetermined time T3 has elapsed. When a second user prints using the printer 100, a PJL command 401 is input to the printer driver from a second host PC, which serves as a second higher-level device operated by the second user. This allows printing based on a print job from the second higher-level device to be executed after printing based on a print job from the first higher-level device has finished, and before the printer 100 transitions to the sleep mode.
[0052] According to the third embodiment, the printer 600 (e.g., the detection unit 110) checks whether there is a second request for device information from the second higher-level device before printing based on the print job from the first higher-level device is completed. As a result, if the printer 600 (e.g., the detection unit 110) does not detect a second request for device information from the second higher-level device by the time printing is completed, the printer 600 can immediately begin transitioning to a sleep state when a specified time T3 has elapsed since the completion of printing. Furthermore, if the printer 600 (e.g., the detection unit 110) detects a second request for device information from the second higher-level device by the time printing is completed, after printing based on the print job from the first higher-level device is completed, the printer 600 can execute printing based on the print job from the second higher-level device before transitioning to a sleep state.
[0053] Fourth Embodiment FIG. 11 is a block diagram showing the configuration of a printer 800 as an image forming apparatus according to the third embodiment. In this embodiment, the description of the same parts as in embodiment 1 will be omitted, and only components different from embodiment 1 will be described. In addition to the components of printer 100 described in embodiment 1, printer 800 further has an operation display unit 801 on which information 802 is displayed. Operation display unit 801 is, for example, a touch panel or a display. If operation display unit 801 is a touch panel, the user can directly input instructions to printer 800 using the touch panel.
[0054] FIG. 12 is a diagram showing an example of information 802 displayed on the operation display unit 801 of the printer 800. As shown in FIG. For example, when printing based on a print job from a first host device is completed and then printing based on a print job from a second host device is performed, information 802 indicating that the transition to the sleep state has been stopped is displayed on the operation display unit 801, as shown in Fig. 12. This allows the user, when they come to pick up the printed matter from the printer 100 after printing using the first host device, to know that the transition to the sleep state has been stopped by another user's operation of the printer 800.
[0055] According to the fourth embodiment, when a user comes to pick up a printed matter from the printer 800, the user can check the status of the printer 800.
[0056] In the first to fourth embodiments, examples in which the present invention is applied to an image forming apparatus (printer) have been mainly described, but the present invention can also be applied to an MFP (Multi Function Printer).
[0057] In this embodiment, in the first host PC as the first higher-level device, either "Go to sleep mode immediately after printing" or "Go to sleep mode after a specified time after printing" is selected in the check box 301 on the printer driver, but in the second host PC as the second higher-level device, either "Go to sleep mode immediately after printing" or "Go to sleep mode after a specified time after printing" may also be selected on the printer driver. In this case, as a variant example, if the printer receives a print job associated with parameter information (specific parameter (OKISLEEPAFTERPRINT) is ENABLE) from a second higher-level device while printing a print job associated with parameter information (specific parameter (OKISLEEPAFTERPRINT) is ENABLE) from a first higher-level device, the main control unit may transition the printer to a sleep state based on the parameter information associated with the print job sent from the second higher-level device.
[0058] The features of the above-described embodiments can be combined with each other as appropriate.
[0059] Various aspects of this embodiment are summarized below as appendices. (Appendix 1) An image forming apparatus communicably connected to a first host device and a second host device via a communication network, a network transceiver that receives a print job or a request for device information indicating a status of the image forming device transmitted from the first host device and the second host device via the communication network; a print data command analysis unit that analyzes the print job and acquires parameter information associated with the print job; a detection unit that detects whether or not there is a request for the device information from the first higher-level device or the second higher-level device; a main control unit that controls the state of the image forming apparatus; a power saving control unit that transmits a sleep instruction signal to the main control unit to transition the state of the image forming apparatus to a sleep state; and the parameter information associated with the print job from the first host device includes instruction information for causing the image forming device to start transitioning to the sleep state when a predetermined time has elapsed since the end of printing based on the print job; If the detection unit does not detect a request for the device information from the second higher-level device until the predetermined time has elapsed since the start of the printing, the power saving control unit transmits the sleep instruction signal to the main control unit based on the instruction information; When the detection unit detects a request for the device information from the second host device between the start of the printing and the lapse of the predetermined time, the power saving control unit transmits to the main control unit an extension instruction signal for delaying the start of the transition to the sleep state from the lapse of the predetermined time. An image forming apparatus characterized by: (Appendix 2) The predetermined time is the end time of printing based on the print job. 2. The image forming apparatus according to claim 1, (Appendix 3) The power saving control unit transmits an extension instruction signal to the main control unit to instruct the printer to transition to the sleep state when the predetermined time has elapsed from the start of printing and when a first designated time has also elapsed. 3. The image forming apparatus according to claim 1, wherein: (Appendix 4) a generation unit that generates a designated time change signal for changing the time from the end of printing to the transition to the sleep state to a second designated time that is shorter than the first designated time, the generating unit generates the specified time change signal when the detecting unit has not received the print job from the second higher-level device by the time the printing is completed; The main control unit transitions to the sleep state after the second specified time has elapsed since the end of the printing based on the specified time change signal transmitted from the power saving control unit. 4. The image forming apparatus according to claim 3, (Appendix 5) The detecting unit checks whether or not there is a request for the device information from the second host device again by the time the printing is completed. 5. The image forming apparatus according to claim 1, wherein: (Appendix 6) further comprising an operation display unit on which information is displayed; When printing based on a print job from the second host device is performed after printing based on a print job from the first host device is completed, information indicating that the transition to the sleep state has been stopped is displayed on the operation display unit. 6. The image forming apparatus according to claim 1, wherein: [Explanation of symbols]
[0060] 100,600,800 Printer, 101 Network transmission / reception unit, 102 Print data command analysis unit, 103 Print data editing / expansion unit, 104 Main control unit, 105 Parameter control unit, 106 RAM (volatile memory unit), 107 EEPROM (non-volatile memory unit), 108 Power saving control unit, 802 Information, 109 Engine unit, 110 Detection unit, 611 Generation unit, 801 Operation display unit, T1 Predetermined time, T2 Specified time (first specified time), T3 Specified time (second specified time).
Claims
1. An image forming apparatus communicably connected to a first host device and a second host device via a communication network, a network transceiver that receives a print job or a request for device information indicating a status of the image forming device transmitted from the first host device and the second host device via the communication network; a print data command analysis unit that analyzes the print job and acquires parameter information associated with the print job; a detection unit that detects whether or not a request for the device information has been received from the first higher-level device or the second higher-level device; a main control unit that controls the state of the image forming apparatus; a power saving control unit that transmits a sleep instruction signal to the main control unit to transition the state of the image forming apparatus to a sleep state; and the parameter information associated with the print job from the first host device includes instruction information for causing the image forming device to start transitioning to the sleep state when a predetermined time has elapsed since the end of printing based on the print job; If the detection unit does not detect a request for the device information from the second host device until the predetermined time has elapsed from the start of the printing, the power saving control unit transmits the sleep instruction signal to the main control unit based on the instruction information; If the detection unit detects a request for the device information from the second host device during the predetermined time period from the start of the printing, the power saving control unit transmits an extension instruction signal to the main control unit to delay the start of the transition to the sleep state from the time when the predetermined time period has elapsed. An image forming apparatus characterized by:
2. The predetermined time is the end time of printing based on the print job.
2. The image forming apparatus according to claim 1, wherein the image forming apparatus is a recording medium.
3. The power saving control unit transmits an extension instruction signal to the main control unit to instruct the main control unit to transition to the sleep state when the predetermined time has elapsed from the start of printing and when a first designated time has also elapsed.
3. The image forming apparatus according to claim 1, wherein the image forming apparatus is a recording medium.
4. a generation unit that generates a designated time change signal for changing the time from the end of printing to the transition to the sleep state to a second designated time that is shorter than the first designated time, the generating unit generates the specified time change signal when the detecting unit has not received the print job from the second host device by the time the printing is completed; The main control unit transitions to the sleep state after the second specified time has elapsed since the end of the printing, based on the specified time change signal transmitted from the power saving control unit.
4. The image forming apparatus according to claim 3, wherein the image forming apparatus is a recording medium.
5. The detecting unit checks whether or not there is a request for the device information from the second host device again by the time the printing is completed.
3. The image forming apparatus according to claim 1, wherein the image forming apparatus is a recording medium.
6. further comprising an operation display unit on which information is displayed; When printing based on a print job from the second host device is performed after printing based on a print job from the first host device is completed, information indicating that the transition to the sleep state has been stopped is displayed on the operation display unit.
3. The image forming apparatus according to claim 1, wherein the image forming apparatus is a recording medium.
Citation Information
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