JP5544966B2 - Image processing apparatus and power supply method - Google Patents

Description

  The present invention relates to a technology for returning from a power saving mode in an apparatus including an image reading unit.

  In recent years, image forming apparatuses having various functions such as copying, PC printing, scanning, faxing, and file servers have become widespread. Such an image forming apparatus is sometimes called a “multifunction machine” or “MFP (Multi Function Peripherals)”.

  In recent years, power saving has been attracting attention also in image forming apparatuses. Therefore, several power saving functions for the image forming apparatus have been proposed.

  Patent Document 1 and Patent Document 2 describe devices that supply power to the minimum necessary functions when returning from the power saving mode. The apparatus described in Patent Document 3 detects the presence or absence of a document while suppressing power consumption.

JP 2002-290640 A JP 2004-222234 A JP 2008-22472 A

  Patent Documents 1 and 2 describe devices that supply power to the minimum necessary functions when returning from the power saving mode as described above. Limited supply is not always possible. If the supply needs to be resumed but is not resumed, the start of the job may be delayed.

  In view of such a problem, an object of the present invention is to more appropriately determine a power supply destination when returning from a power saving mode than in the past.

An image processing apparatus according to an aspect of the present invention is an image processing apparatus that includes an image reading unit that reads an image written on a sheet set at a predetermined position, and a power supply unit that supplies power to the image reading unit. And a paper set detecting means for detecting whether or not the paper is set at the predetermined position, a detection result storing means for storing a result of detection by the paper set detecting means, and a predetermined for the image processing apparatus. As the operation , an operation other than an operation for switching the image processing apparatus to a mode of a job involving reading of the image and an operation for setting the paper to cause the image processing apparatus to read the image is detected. After the operation detection unit and the power supply unit stop supplying power to the image reading unit, the operation detection unit performs the predetermined operation. When an operation is detected, the latest detection result stored in the detection result storage means is that the paper has been set, and the image reading means performs the detection after the latest detection. If the image is not read, the power supply means has power supply restart control means for restarting the supply.

  An image processing apparatus according to another aspect of the present invention includes an image reading unit that reads an image written on a sheet set at a predetermined position, and an image processing unit that supplies power to the image reading unit. A device for detecting whether or not the paper is set at the predetermined position, and storing a result of detecting whether or not the paper is set by the paper set detecting means. A detection result storage unit; an identifier storage unit that stores a first identifier that is an identifier of a user who is logged in to the image processing device at the time of the detection by the paper set detection unit; and a predetermined operation on the image processing device An operation detecting means for detecting the power, and after the supply of power to the image reading means by the power supply means is stopped, the operation detecting means performs the predetermined operation. When an operation is detected, the latest detection result stored in the detection result storage means that the paper is set, and the second input after the supply is stopped Power supply restart control means for causing the power supply means to restart the supply if the identifier matches the latest one of the first identifiers stored in the identifier storage means.

  According to the present invention, it is possible to more appropriately determine the power supply destination when returning from the power saving mode than before.

1 is a diagram illustrating an example of an appearance of an image forming apparatus. 2 is a diagram illustrating an example of a hardware configuration of an image forming apparatus. FIG. It is a figure which shows the example of opening and closing of a document feeder. It is a figure which shows the example of a touchscreen and a keyboard. 2 is a diagram illustrating an example of a functional configuration of an image forming apparatus. FIG. It is a flowchart explaining the example of the flow of a hibernation cancellation | release module determination process. 10 is a flowchart illustrating an example of the overall processing flow of a power saving function in the image forming apparatus. It is a figure which shows the modification of a functional structure of an image forming apparatus. It is a flowchart explaining the modification of the flow of a hibernation cancellation | release module determination process.

[First embodiment]
1 is a diagram illustrating an example of the appearance of the image forming apparatus 1, FIG. 2 is a diagram illustrating an example of a hardware configuration of the image forming apparatus 1, FIG. 3 is a diagram illustrating an example of opening and closing of a document feeder 10i, and FIG. FIG. 5 is a diagram illustrating an example of a functional configuration of the image forming apparatus 1.

  An image forming apparatus 1 illustrated in FIG. 1 is an image processing apparatus in which functions such as copying, network printing, scanning, FAX, or a document server are integrated. Sometimes called a multi-function peripheral or MFP (Multi Function Peripherals).

  The function of the document server is sometimes called a “box function”. According to this function, a “box” corresponding to a directory or folder in a personal computer or workstation is provided in a nonvolatile rewritable recording device such as a hard disk for each user. The user can store image data or the like in his / her box or perform printing using the stored image data.

  As shown in FIGS. 1 and 2, the image forming apparatus 1 includes a CPU (Central Processing Unit) 10a, a RAM (Random Access Memory) 10b, a ROM (Read Only Memory) 10c, a nonvolatile storage device 10d, a modem 10e, a NIC. (Network Interface Card) 10f, touch panel 10g, keyboard 10h, document feeder 10i, scanner 10j, paper discharge tray 10k, printing apparatus 10m, power supply unit 10n, control circuit, and the like.

  The modem 10e is a device that communicates with other fax terminals using the G3 protocol via a fixed telephone network.

  The NIC 10f is a device for communicating with other devices by TCP / IP (Transmission Control Protocol / Internet Protocol) via a so-called LAN (Local Area Network) line.

  The document feeder 10i conveys one or more sheets on which images to be read are written to the scanner 10j one by one. The paper on which the image to be read is written is referred to as “original”.

  Although the user can set the document on the document feeder 10i and transport the document to the scanner 10j, the document feeder 10i is lifted as shown in FIG. 3B, and the document is directly placed on the document table 10jd of the scanner 10j. It can also be set. Hereinafter, the state where the document feeder 10i is lifted as shown in FIG. 3B will be referred to as “the state where the document feeder 10i is open” or the like. On the other hand, as shown in FIG. 3A, the state where the document feeder 10i is not lifted is described as “the document feeder 10i is closed”.

  The scanner 10j reads an image such as a photograph, a character, a picture, or a chart written on a document, and generates image data.

  A document conveyed from the document feeder 10i and scanned by the scanner 10j is discharged to the paper discharge tray 10k. The document set directly on the scanner 10j is not discharged to the discharge tray 10k.

  The printing apparatus 10m prints an image on a sheet based on image data transmitted from a personal computer or a fax terminal. The image read by the scanner 10j is printed on a sheet.

  The touch panel 10g is a liquid crystal display that displays a screen for giving a message to the user, a screen showing a processing result, a screen for the user to input an instruction to the image forming apparatus 1, and the like. Furthermore, the touch panel 10g detects a touched (pressed) position and notifies the CPU 10a of the position.

  As shown in FIG. 4, the keyboard 10 h is a device for inputting information and commands having keys such as a function key, a numeric keypad, and a start key. When the key is pressed, a signal corresponding to the pressed key is transmitted to the CPU 10a. Thereby, the CPU 10a detects the pressed key.

  As function keys, a box key 10ha for switching to the box mode, a scan fax key 10hb for switching to the scan fax mode, and a copy key 10hc for switching to the copy mode are provided.

  When the box key 10ha is pressed, the user performs an operation on the touch panel 10g to use the data stored in the box or to cause the scanner 10j to read the image of the original to generate image data and store it in the box. Screen is displayed.

  When the scan fax key 10hb is pressed, a screen is displayed for the user to perform operations such as fax transmission or Scan_To_PC. Note that “Scan_To_PC” is a function for causing the scanner 10j to read an image of a document, generating image data, and transmitting the image data to a personal computer. Further, the above-described function of causing the scanner 10j to read an image of an original, generating image data, and saving it in a box may be called “Scan_To_BOX”.

  When the copy key 10hc is pressed, a screen for the user to perform an operation related to the process of copying the document to another sheet is displayed.

  The power supply unit 10 n supplies power to each hardware constituting the image forming apparatus 1. The image forming apparatus 1 has a power saving function. Therefore, when the image forming apparatus 1 is not operated for a certain time, power supply to a part of hardware of the image forming apparatus 1 is stopped. Power supply is stopped in stages.

  When power is supplied to all hardware, if no operation is performed for 15 minutes, for example, display of the screen on the touch panel 10g is stopped, and power can be saved. Hereinafter, a state where power is supplied to all hardware is referred to as “normal mode”, and a state where only power supply to the touch panel 10g is stopped is referred to as “standby mode”.

  If no operation is performed for another 15 minutes after entering the standby mode, the power supply unit 10n stops supplying power to the nonvolatile storage device 10d, the scanner 10j, and the printing device 10m. Hereinafter, such a state is referred to as a “sleep mode”.

  The nonvolatile storage device 10d is a nonvolatile rewritable storage device. A hard disk or a flash memory is used as the non-volatile storage device 10d.

  The nonvolatile storage device 10d includes functions such as a document set flag update unit 101, a job flag update unit 102, a stop release module determination unit 103, a document set flag storage unit 121, and a job flag storage unit 122 as shown in FIG. A program for realizing is stored. This program is loaded into the RAM 10b and executed by the CPU 10a.

  In addition, each hardware of the image forming apparatus 1 is provided with the following sensors.

  The scanner 10j is provided with a document sensor 10ja. The document sensor 10ja detects whether or not a document is set on the document table 10jd. If a document is set, the size and orientation of the document are further detected.

  The document feeder 10i is provided with an open / close sensor 10ia and a set sensor 10ib. The open / close sensor 10ia detects that the document feeder 10i has been opened and closed. The set sensor 10ib detects that a document is set on the document feeder 10i.

  The open / close sensor 10ia and the set sensor 10ib are supplied with power even in the sleep mode, and can detect them. Similarly, the keyboard 10h can detect a pressed key even in the sleep mode.

  FIG. 6 is a flowchart for explaining an example of the flow of the suspension release module determination process.

  Each unit illustrated in FIG. 5 performs processing for canceling the sleep mode. Hereinafter, processing contents of each unit illustrated in FIG. 5 will be described.

  The document sensor 10ja, the document set flag update unit 101, and the job flag update unit 102 operate as follows in the normal mode.

  As described above, the document sensor 10ja detects whether or not a document is set on the document table 10jd. In particular, the document sensor 10ja detects when the document feeder 10i is closed by the opening / closing sensor 10ia.

  The document set flag storage unit 121 stores a document set flag 71. The document set flag 71 is a flag indicating whether or not a document is set on the document table 10jd. When it is “1”, it indicates that it is set. When it is “0”, it is set. Indicates no.

  Document set flag update unit 101 rewrites document set flag 71 to “1” when document sensor 10ja detects that a document is set on document table 10jd. When the document sensor 10ja detects that no document is set on the document table 10jd, the document setting flag 71 is rewritten to “0”.

  The job flag storage unit 122 stores a job flag 72. The job flag 72 is a flag indicating whether or not a job involving scanning has been executed after the document is directly set on the document table 10jd. When the job flag 72 is “1”, it indicates that it has been executed, and when it is “0”, it indicates that it has not been executed. Examples of jobs that involve scanning include copying, fax transmission, and Scan_To_PC.

  The job flag update unit 102 rewrites the job flag 72 to “1” when a job with scanning is executed when the document set flag 71 is “1”. When the document set flag 71 is rewritten to “0” by the document set flag update unit 101, the job flag update unit 102 rewrites the job flag 72 to “0”.

  When an event that triggers cancellation of the sleep mode occurs when the image forming apparatus 1 is in the sleep mode, processing by the stop cancellation module determination unit 103 is started.

  As such events, for example, it is detected by the opening / closing sensor 10ia that the set sensor 10ib has detected that a document is set on the document feeder 10i, and that the document feeder 10i has been opened or closed (open / closed). The touch panel 10g being touched, and any key on the keyboard 10h being pressed. That is, it can be said that these events occur when each sensor or the CPU 10a detects an operation performed on the image forming apparatus 1 by the user.

  Further, not only when the hardware of the image forming apparatus 1 is directly operated, but also when remotely operated, an event that triggers the release of the sleep mode occurs. For example, an event of “communication” also occurs when the image forming apparatus 1 is remotely operated by transmitting image data from another apparatus and causing the image forming apparatus 1 to receive the image data.

  The stop cancellation module determination unit 103 executes a process of determining hardware for canceling the power supply stop according to the procedure shown in FIG.

  When the document feeder 10i detects a document set, it is considered that a job that involves scanning the document will be performed. The same applies when the open / close sensor 10ia detects the opening / closing of the document feeder 10i. The same applies when the box key 10ha, the scan fax key 10hb, or the copy key 10hc is pressed.

  Therefore, the stop cancellation module determination unit 103 is activated when the document feeder 10i detects that the document is set, the opening / closing sensor 10ia detects opening / closing of the document feeder 10i, and the box key 10ha and the scan fax key 10hb. Or if the copy key 10hc has been pressed (Yes in # 201, Yes in # 202, or Yes in # 203), at least release of power supply to the scanner 10j is cancelled. Then, it is determined (# 209). For example, it is determined to cancel all power supply stops and return to the normal mode.

  If the activation factor is something other than those, that is, if the operation has been performed but it is still impossible to guess that the user is trying to perform a job that involves scanning only by the operation (from # 201 to # 203) In all cases, the stop cancellation module determination unit 103 checks the document set flag 71. For example, the document set flag 71 is checked when the touch panel 10g is touched or when the numeric keypad or start key of the keyboard 10h is pressed.

  If the document set flag 71 is “0” (No in # 205), the stop cancellation module determination unit 103 cancels the power supply stop of any other hardware while the power supply of the scanner 10j is stopped. Are determined (# 208). For example, it is determined that the power supply to all other hardware is resumed while the power supply to the scanner 10j is stopped.

  If the document set flag 71 is “1” (Yes in # 205), the stop cancellation module determination unit 103 further checks the job flag 72 (# 206). If the job flag 72 is “1” (Yes in # 207), it is determined to cancel the power supply stop of other hardware while the power supply of the scanner 10j is stopped (# 208). On the other hand, if it is “0” (No in # 207), it is determined that at least the stop of the power supply to the scanner 10j is released (# 209).

  Then, the stop cancellation module determination unit 103 controls the power supply unit 10n so that the supply of power to each hardware is resumed as determined.

  As described above, the power supply unit 10n sleeps in a state where the original is set (that is, forgetting to remove the original) without executing a job involving scanning after the original is set on the original table 10jd. When the mode is entered, the power supply to the scanner 10j is resumed when the sleep mode is canceled. On the other hand, after a document is set on the document table 10jd, a job involving scanning is executed, and when the document is set and the sleep mode is entered, when the sleep mode is canceled, power supply to the scanner 10j is continued. Leave it stopped.

  FIG. 7 is a flowchart for explaining an example of the overall processing flow of the power saving function in the image forming apparatus 1.

  Next, an overall processing flow regarding the power saving function of the image forming apparatus 1 will be described with reference to the flowchart of FIG.

  When the image forming apparatus 1 detects that the document feeder 10i is closed (Yes in # 11), the image forming apparatus 1 sets the document setting flag 71 as follows depending on whether or not a document is set on the document table 10jd. When it is detected that a document is set on the document table 10jd (Yes in # 12), the document setting flag 71 is set to “1” (# 13). On the other hand, when it is detected that no document is set on the document table 10jd (No in # 12), the document setting flag 71 is set to “0” (# 14). Further, the job flag 72 is set to “0” (# 15).

  When the image forming apparatus 1 executes the job with scanning (Yes in # 16), the job flag 72 is set to “1” (# 17). When the state of no operation continues for a predetermined time (# 18), the mode is switched to the standby mode or the sleep mode according to the length of time of the state of no operation (# 19).

  When the standby mode or the sleep mode is entered, the image forming apparatus 1 monitors an event such as an operation corresponding to the release condition (# 20). When such an event is detected (Yes in # 21), the hardware for restarting the power supply and the hardware to keep the power supply stopped are determined (# 22), and the standby mode or the sleep mode is determined based on the determination result. Is released (# 23). Since the case of canceling the standby mode is the same as the conventional case, the description is omitted. The determination method for canceling the sleep mode is as described above with reference to FIG.

  Even if the power supply to the scanner 10j is stopped, when a job execution command accompanied by a scan is subsequently given, the power supply unit 10n immediately restarts the power supply to the scanner 10j.

  In step # 206 in FIG. 6, a job execution log (history) is used in place of the job flag 72 to determine whether or not the job with the scan has been executed and the sleep mode has been entered with the original set. May be determined.

[Second Embodiment]
FIG. 8 is a diagram illustrating a modified example of the functional configuration of the image forming apparatus 1, and FIG. 9 is a flowchart illustrating a modified example of the flow of the suspension release module determination process.

  In the first embodiment, after shifting to the sleep mode, whether to resume the power supply to the scanner 10j is determined based on the job flag 72, but in the second embodiment, the user immediately before the sleep mode and It is determined based on the result of collation with the user at the time of cancellation.

  The hardware configuration of the image forming apparatus 1 in the second embodiment is the same as that in the second embodiment, and is as shown in FIGS. However, the nonvolatile storage device 10d includes a document set flag update unit 131, a set user identifier update unit 132, a stop release module determination unit 133, a document set flag storage unit 141, a set user identifier storage unit 142, and the like shown in FIG. A program for realizing these functions is stored.

  Hereinafter, the processing content of each part shown in FIG. 8 etc. are demonstrated sequentially. However, description of points common to the first embodiment is omitted.

  The document set flag storage unit 141 stores a document set flag 71 in the same manner as the document set flag storage unit 121 (see FIG. 5) of the first embodiment.

  When the document sensor 10ja detects that the document is set on the document table 10jd, the document set flag update unit 131 sets the document set flag 71 to “ Rewrite to “1”. When the document sensor 10ja detects that no document is set on the document table 10jd, the document setting flag 71 is rewritten to “0”.

  The set user identifier storage unit 142 stores a set user identifier 73. The set user identifier 73 is an identifier (for example, a user ID) of a user who directly sets a document on the document table 10jd.

  When the document sensor 10ja detects that a document has been set on the document table 10jd, the set user identifier update unit 132 sets the user ID of the user currently logged in to the image forming apparatus 1 as the set user identifier 73. The identifier is stored in the identifier storage unit 142. When the set user identifier 73 is already stored in the set user identifier storage unit 142, that is, when the old set user identifier 73 exists, it is deleted and the user ID of the user currently logged in to the image forming apparatus 1 is deleted. Is newly stored as the set user identifier 73.

  Similarly to the stop cancellation module determination unit 103 of the first embodiment, the stop cancellation module determination unit 133 performs a process of determining hardware for canceling power supply stop when an event that triggers cancellation of the sleep mode occurs. Run. However, the determination method is different from the first embodiment. Hereinafter, the determination method in the second embodiment will be described with reference to the flowchart shown in FIG.

  In FIG. 9, when the login authentication is completed before a predetermined time elapses after an event that triggers the cancellation of the sleep mode (Yes in # 220), the stop cancellation module determination unit 133 A determination is made according to the trigger for canceling the mode (# 221 to # 229).

  For login authentication, it is necessary to input a user identifier. The input may be performed using the keyboard 10h, or may be performed by providing an IC card reader in the image forming apparatus 1 and causing the IC card reader to read the identifier from the IC card. The authentication method itself is publicly known, and can be performed, for example, by collating an identifier registered in advance with an input identifier. The reading of the identifier by the IC card reader may be one of the events that triggers the cancellation of the sleep mode.

  The case classification of steps # 221 to # 223 is the same as the case classification of steps # 201 to # 203 of the first embodiment.

  Therefore, the reasons why the stop cancellation module determination unit 133 is activated are that the set sensor 10ib has detected setting of a document on the document feeder 10i, the opening / closing sensor 10ia has detected opening / closing of the document feeder 10i, and the box key 10ha, When the scan fax key 10hb or the copy key 10hc is pressed (Yes in # 221, Yes in # 222, or Yes in # 223), the stop cancellation module determination unit 133 at least It is determined to stop the power supply to the scanner 10j (# 229). For example, it is determined to cancel all power supply stops and return to the normal mode.

  If the activation factor is none of these (No in all of # 221 to # 223), the stop cancellation module determination unit 133 determines that the document set flag 71 is “0” (No in # 225). It is determined that the power supply stop of any other hardware is canceled while the power supply of 10j is stopped (# 228). For example, it is determined that the power supply to all other hardware is resumed while the power supply to the scanner 10j is stopped.

  If the document set flag 71 is “1” (Yes in # 225), the stop cancellation module determination unit 133 is stored in the identifier of the user currently logged in to the image forming apparatus 1 and the set user identifier storage unit 142. The set user identifier 73 is collated (# 226).

  If they match (Yes in # 227), the stop cancellation module determination unit 133 determines to cancel at least the stop of the power supply to the scanner 10j (# 229). On the other hand, if they do not match (No in # 227), it is determined to cancel the power supply stop of other hardware while power supply to the scanner 10j is stopped (# 228).

  Then, similarly to the case of the first embodiment, the power supply unit 10n controls the power supply unit 10n so that the supply of power to each hardware is resumed as determined.

  The overall processing flow of the image forming apparatus 1 in the second embodiment is as described above with reference to the flowchart shown in FIG.

  According to the first embodiment and the second embodiment, even when the event that triggers the return from the sleep mode is not directly related to the scan, the user tries to execute the job that involves the scan. Can be predicted, the supply of power to the scanner 10j is resumed. Therefore, the power supply destination when returning from the sleep mode can be performed more appropriately than in the past.

  In the first embodiment and the second embodiment, the case is divided according to whether or not the document is still set on the document table 10jd in step # 201 of FIG. 6 and step # 221 of FIG. However, the case may be divided depending on whether or not the document is still set in the document feeder 10i. In this case, the document set flag updating units 101 and 131 may update the document set flag 71 every time the set sensor 10ib detects whether or not a document is set. Alternatively, the case may be divided depending on whether or not the document is still set on one of the document table 10jd and the document feeder 10i.

  In the first embodiment and the second embodiment, as examples of operations that can be inferred that the user is about to perform a job that involves scanning, opening and closing the document feeder 10i, pressing a predetermined function key, and document feeder 10i Cited a set of manuscripts. In addition, as examples of operations that cannot be presumed that the user is trying to perform a job that involves scanning, pressing of the numeric keypad and pressing of the start key are given. Which operation can be estimated by which operation depends on specifications such as a user interface of the image processing apparatus to which the present invention is applied.

  In addition, the configuration of the entire image forming apparatus 1 or each unit, the processing content, the processing order, the data configuration, and the like can be appropriately changed in accordance with the spirit of the present invention.

1 Image forming device (image processing device)
10a CPU (operation detection means, power supply restart control means)
10ib Set sensor (paper set detection means)
10j scanner (image reading means)
10ja Document sensor (paper set detection means)
10n power supply unit (power supply means)
103, 133 Stop cancellation module determination unit (power supply restart control means)
121, 141 Document set flag storage unit (detection result storage means)
142 set user identifier storage unit (identifier storage means)

Claims (5)

An image processing apparatus comprising: an image reading unit that reads an image written on a sheet set at a predetermined position; and a power supply unit that supplies power to the image reading unit,
Paper set detection means for detecting whether or not the paper is set at the predetermined position;
A detection result storage means for storing a result of detection by the paper set detection means;
As a predetermined operation for the image processing apparatus, an operation for switching the image processing apparatus to a job mode that involves reading the image, and an operation for setting the paper to cause the image processing apparatus to read the image. Operation detection means for detecting operations other than
The latest detection result stored in the detection result storage means when the predetermined operation is detected by the operation detection means after the power supply means stops supplying power to the image reading means. And a power supply restart control means for causing the power supply means to restart the supply if the paper is set and the image reading means has not read the image after the latest detection. ,
An image processing apparatus comprising: An image processing apparatus comprising: an image reading unit that reads an image written on a sheet set at a predetermined position; and a power supply unit that supplies power to the image reading unit,
Paper set detection means for detecting whether or not the paper is set at the predetermined position;
Detection result storage means for storing a result of detection as to whether or not the paper is set by the paper set detection means;
Identifier storage means for storing a first identifier that is an identifier of a user who is logged in to the image processing apparatus at the time of detection by the paper set detection means;
Operation detecting means for detecting a predetermined operation on the image processing apparatus;
The latest detection result stored in the detection result storage means when the predetermined operation is detected by the operation detection means after the power supply means stops supplying power to the image reading means. Is that the paper is set, and the second identifier input after the supply is stopped and the latest one of the first identifiers stored in the identifier storage means are If they match, the power supply means restarts the power supply, and the power supply restart control means,
An image processing apparatus comprising: The predetermined operation is an operation other than an operation for switching the image processing apparatus to a mode of a job that involves reading the image and an operation for setting the paper to cause the image processing apparatus to read the image. is there,
The image processing apparatus 請 Motomeko 2 wherein. A power supply method in an image processing apparatus comprising: an image reading unit that reads an image written on a sheet set at a predetermined position; and a power supply unit that supplies power to the image reading unit,
Let the paper set detection means detect whether or not the paper is set at the predetermined position,
A result of detection by the paper set detection means is stored in a detection result storage means;
As a predetermined operation for the image processing apparatus, an operation for switching the image processing apparatus to a job mode that involves reading the image, and an operation for setting the paper to cause the image processing apparatus to read the image. Let the operation detection means detect operations other than
The latest detection result stored in the detection result storage means when the predetermined operation is detected by the operation detection means after the power supply means stops supplying power to the image reading means. If the paper is set and the image reading means has not read the image after the latest detection, the power supply means restarts the supply.
The power supply method characterized by the above-mentioned. A power supply method in an image processing apparatus comprising: an image reading unit that reads an image written on a sheet set at a predetermined position; and a power supply unit that supplies power to the image reading unit,
Let the paper set detection means detect whether or not the paper is set at the predetermined position,
The detection result storage means stores the result of detection as to whether or not the paper is set by the paper set detection means,
A first identifier that is an identifier of a user who is logged in to the image processing apparatus at the time of the detection by the paper set detection unit is stored in an identifier storage unit;
Let the operation detection means detect a predetermined operation on the image processing apparatus,
The latest detection result stored in the detection result storage means when the predetermined operation is detected by the operation detection means after the power supply means stops supplying power to the image reading means. Is that the paper is set, and the second identifier input after the supply is stopped and the latest one of the first identifiers stored in the identifier storage means are If they match, the power supply means restarts the supply,
The power supply method characterized by the above-mentioned.

Images