JP2023065354A - Processing apparatus and power control method of processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing apparatus capable of suppressing wasteful power consumption while ensuring convenience of an operator by switching power control to adapt to trends of the operator which goes away from an operation unit.

SOLUTION: An image forming apparatus operates under a first power state and a second power state of more power saving than the first power state. In the image forming apparatus, when detection means is changed into a state where an object is not detected, timing that the image formation apparatus is shifted to the second power state on the basis of a job execution state by processing means is controlled.

SELECTED DRAWING: Figure 6

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to a processing device using human body detection technology, and more particularly to a processing device and a power control method for the processing device that switch power states using human body detection technology.

2. Description of the Related Art Conventionally, in image forming apparatuses such as printers, facsimile machines, and copiers, predetermined power generated by a power supply is supplied to predetermined loads of the image forming apparatus. The image forming apparatus includes a power control device, and the power control device shifts from a normal mode, in which the user can operate, to a power saving mode to reduce power consumption when the image forming apparatus does not operate for a certain period of time. It is designed to shift to power mode. However, since the normal mode must be maintained for a certain period of time before shifting to the power saving mode even after the user's operation ends, power may be wasted.

In order to solve this problem, there is a method of providing a human body detection means in the image forming apparatus and adjusting the sensitivity of the human detection means according to the user's processing execution operation. Further, by using a method of adjusting the count value of a timer for transitioning to the power saving mode according to the frequency of operation of the power saving mode canceling means, it is intended to realize both user convenience and reduction of power consumption. be. (See Patent Document 1)

JP 2012-118253 A

However, in the technique described in Patent Document 1, although the sensitivity of the human detection means and the timer count value are adjusted, even if the user operation is completed, the normal mode is maintained for a certain period of time before shifting to the power saving mode. In order to maintain it, power is wasted.

The present invention has been made to solve the above problems, and an object of the present invention is to ensure convenience for the operator by switching the power control in accordance with the movement of the operator moving away from the operation unit. Another object of the present invention is to provide a mechanism capable of suppressing wasteful power consumption.

The processing apparatus of the present invention for achieving the above object has the following configuration.
A processing device comprising detection means for detecting a person and an operation unit operated by an operator, and supplying power to one or more devices based on detection of a person by the detection means,
If the operator operates the operation unit before a predetermined condition is satisfied after power is supplied to the one or more devices based on the detection of a person by the detection unit, the operation of the operation unit is performed in a predetermined manner. power to the one or more devices is stopped when the time elapses, and the operation unit is operated by the operator after power is supplied to the one or more devices based on detection of a person by the detection means; power supply to the one or more devices without waiting for the predetermined time if the predetermined condition is satisfied without being operated by the device.

According to the present invention, it is possible to suppress wasteful power consumption while ensuring the convenience of the operator by switching the power control in accordance with the movement of the operator moving away from the operation unit.

1 is a diagram for explaining the configuration of an image forming apparatus; FIG. FIG. 2 is a conceptual diagram showing a detection area of a human sensor shown in FIG. 1; 3 is a block diagram showing the configuration of a main controller section and a power supply section; FIG. 2 is a block diagram for explaining power supply states of the image forming apparatus; FIG. 4 is a flowchart for explaining a control method of the image forming apparatus; 4 is a flowchart for explaining a control method of the image forming apparatus; 4 is a flowchart for explaining a control method of the image forming apparatus;

BEST MODE FOR CARRYING OUT THE INVENTION Next, the best mode for carrying out the present invention will be described with reference to the drawings.
<Description of system configuration>
[First embodiment]

FIG. 1 is a diagram for explaining the configuration of an image forming apparatus showing this embodiment. In this example, the image forming apparatus 100 includes a printer section 102 , a scanner section 103 and a main controller section 101 . In this embodiment, an image forming apparatus that operates in a first power state and a second power state that is more power-saving than the first power state will be described as an example.
In FIG. 1, a printer unit 102 performs image forming processing on a sheet-like recording medium (paper) according to, for example, an electrophotographic method. A scanner unit 103 optically reads an image from a document and converts it into a digital image.

A main controller unit 101 controls the entire image forming apparatus 100, performs image forming processing on a document image read by a scanner unit 103 in a printer unit 102, and performs control such as a copying operation. Also, the main controller unit 101 is connected to a PC 107 via a network 106 . The network 106 is a local area network (LAN) or the like, and may be wired or wireless. The PC 107 is a general computer device having fixed storage devices such as a CPU, RAM, and HDD, and to which a monitor, keyboard, mouse, and the like are connected. A printer driver program as an image forming program is installed in the PC 107 .

When the PC 107 executes the printer driver program, the PC 107 generates PDL data and transmits it to the image forming apparatus 100 according to drawing commands issued by the operating system or application program. Here, PDL data is data converted into a page description language processable by the image forming apparatus 100 by a printer driver program. The image forming apparatus 100 forms on paper a bitmap image generated based on the PDL data received from the PC 107, and performs a printing operation.
The image forming apparatus 100 is provided with an AC plug 105, and is supplied with AC commercial power by inserting the AC plug 105 into an outlet outside the apparatus.

The image forming apparatus 100 also includes a human sensor unit 104 that detects a moving object such as a person around the image forming apparatus 100 . The human sensor unit 104 may be, for example, a pyroelectric sensor that senses infrared rays radiated from a person and determines the presence or absence of a person based on the amount of change in the infrared rays, or a reflective sensor that emits light such as infrared rays and detects the reflected light. The sensor is not particularly limited as long as it can determine the presence or absence of a person within the detection area, such as a sensor.

FIG. 2 is a conceptual diagram showing a detection area of the human sensor section shown in FIG.
2A and 2B, the detection area 200 is the detection area of the human sensor unit 104, and the human sensor unit 104 detects when a person exists within the detection area 200. there is FIG. 2A shows a concept of the image forming apparatus 100 viewed from the side, and a detection area 200 of the human sensor unit 104 is assumed to be a user standing in front of the image forming apparatus 100 and operating it. facing down the front of the device.
2(B) of FIG. 2 shows a concept of the image forming apparatus 100 viewed from above, and the human sensor unit 104 is an operation unit that is expected to be operated while standing in front of the image forming apparatus 100 . mounted on the front. It should be noted that this detection area 200 can be changed depending on the mounting position of the human sensor section 104, the mounting orientation, and the like.

FIG. 3 is a block diagram showing the configuration of the main controller section and the power supply section shown in FIG.
In FIG. 3 , the main controller section 101 includes a power control section 312 , a network processing section 313 , a timer section 314 , a memory section 315 , an HDD section 316 , a CPU section 317 and an image processing section 318 .

The power control unit 312 supplies power to each processing unit of the image forming apparatus according to the control program executed by the CPU unit 317 of the main controller unit 101 and the states of the human sensor unit 104, the operation unit 319, and the network processing unit 313. / Perform switching control to cut off. The network processing unit 313 is connected to the CPU unit 317 and the power control unit 312 . The power control unit 312 is supplied with power even when the processing unit including the CPU unit 317 transitions to the power saving state. Perform switching control to cut off. Therefore, a configuration in which a sub CPU is provided in the power control unit 312 may be employed.

A network processing unit 313 functions as a control unit that outputs PDL data transmitted from the PC 107 via the network 106 to the CPU unit 317 . Further, when the image forming apparatus 100 is in the power saving mode and receives a network packet addressed to the image forming apparatus 100 from the network 106, it instructs the power control unit 312 to shift to the normal mode.
The human sensor unit 104 is connected to the power control unit 312 and notifies the presence or absence of a person within the detection area of the human sensor unit 104 . Further, when the image forming apparatus 100 is in the power saving mode and detects the presence of a person within the detection area of the human sensor unit 104, the image forming apparatus 100 instructs the power control unit 312 to shift to the normal mode.

The timer unit 314 is connected to the CPU unit 317 and performs timing processing of the transition time for the image forming apparatus 100 to transition to the power saving mode. The memory section 315 is connected to the CPU section 317 . The memory unit 315 is a volatile memory such as DDR SDRAM, and is a main memory that stores user data and the like created by control programs and the like executed by the CPU unit 317 .

Further, the memory unit 315 stores operation history information 321 indicating when the operation unit 319 was operated, and is information updated by the CPU unit 317 each time after the operation unit 319 is operated. The HDD section 316 is connected to the CPU section 317 . The HDD unit 316 is a storage device for temporarily storing programs executed by the CPU unit 317 and PDL data transmitted from the network 106 .

The HDD unit 316 stores process execution history information 320 indicating when a job such as a copy operation, a print operation, or a scan operation was executed. be.

A CPU unit 317 is a central processing unit that controls the entire image forming apparatus 100 , and implements a copy function, a print function, and the like based on control programs stored in the HDD unit 316 . The image processing unit 318 is connected to the CPU unit 317 , the printer unit 102 and the scanner unit 103 . An image processing unit 318 performs image processing such as color space conversion on the digital image output from the scanner unit 103 and outputs data after the image processing to the CPU unit 317 .

An image processing unit 318 performs image processing such as color space conversion on image data generated based on image data read by the scanner unit 103 and PDL data received from the PC 107, converts the data into bitmap data, and outputs the data to the printer. Output to the unit 102 . The operation unit 319 is connected to the power control unit 312 and the CPU unit 317 . An operation unit 319 includes an operation liquid crystal panel and hard keys including a power saving mode release button, and accepts instructions input by the user. Further, when the image forming apparatus 100 detects that the power saving mode release button is pressed while in the power saving mode, it instructs the power control unit 312 to shift to the normal mode.

The power supply device 300 of the image forming apparatus 100 shown in FIG. 1 will be described below with reference to FIG.
By inserting the AC plug 107 provided in the image forming apparatus 100 into an outlet outside the apparatus, AC commercial power is supplied to the relay 301 and the first controller power supply system power supply unit 305 . The relay 301 is controlled by the power control unit 312 , and when the relay 301 is turned on, power can be supplied to the high-voltage power supply unit 303 and the low-voltage power supply unit 304 . The first controller power system power supply unit 305 is controlled by a power control unit 312 and connected to the power supply system 310 of the main controller unit 101 .

The power supply system 310 is a power supply system that is always supplied with power even during the power saving mode, and is connected to the human sensor unit 104, the power control unit 312, the network processing unit 313, the timer unit 314, and the memory unit 315. Next, the power supply unit 302 including the high-voltage power supply unit 303 and the low-voltage power supply unit 304 is controlled by the power control unit 312, and is powered off during the power saving mode. A high-voltage power supply unit 303 is a power supply mainly used for a motor driving power supply for the printer unit 102 and the scanner unit 103, a heater for the fixing unit, and the like. The low voltage power supply unit 304 supplies power to the power supply system 311 of the printer unit 102 , the scanner unit 103 and the main controller unit 101 . A power supply system 311 of the main controller unit 101 is a power supply system to which power is shut off during the power saving mode, and an HDD unit 316, a CPU unit 317, an image processing unit 318, and an operation unit 319 are connected.

A power supply unit 306 including a scanner unit power supply unit 307, a printer unit power supply unit 308, and a second controller power supply system power supply unit 309 is controlled by a power control unit 312, and the power is turned off during the power saving mode. . The scanner unit power supply unit 307 is connected to the scanner unit 103 using the high voltage power supply unit 303 and the low voltage power supply unit 304 as input sources, and is controlled to be turned on/off by the power control unit 312 . .

The printer unit power supply unit 308 is connected to the printer unit 102 using the high voltage power supply unit 303 and the low voltage power supply unit 304 as input sources, and is controlled to be turned on/off by the power control unit 312 . . The power supply unit 309 for the second controller power supply system is connected to the second power supply system 311 of the main controller unit 101 using the low voltage power supply unit 304 as an input source, and is controlled to be turned on/off by the power control unit 312. It's like

FIG. 4 is a block diagram for explaining the power state of the image forming apparatus according to this embodiment. In this figure, grayed out portions correspond to the power supply state in the power saving mode. In the normal mode, power is supplied to all blocks shown in FIG. At this time, a form in which power is supplied only to necessary functions may be adopted, but it is not specified here. In the power saving mode, power is supplied to some blocks as shown in FIG.

First, AC commercial power is supplied to the first controller power supply system power supply unit 305 via the AC plug 107 . The blocks to which power is supplied from the first controller power supply system power supply unit 305 are the human sensor unit 104 , the power control unit 312 , the network processing unit 313 , the timer unit 314 , and the memory unit 315 . It should be noted that although the power supply to the operation unit 319 is described as being cut off, the configuration is such that the power control unit 312 can detect that the power saving mode release button has been pressed.

Next, a transition sequence from normal mode to power saving mode will be described.
When the power saving mode transition condition is satisfied, such as that the image forming apparatus 100 has not been operated for a certain period of time, the CPU unit 317 executes power saving mode transition processing. In the power saving mode transition processing, first, the CPU unit 317 executes software power saving mode transition processing such as saving data in the image processing unit 318 according to the control program stored in the HDD unit 316 .

After the power saving mode transition processing of the software is completed, the CPU unit 317 instructs the power control unit 312 to cut off power to the relay 301 , the power supply unit 302 , and the power supply unit 306 . When the power control unit 312 receives the power cutoff instruction from the CPU unit 317, it cuts off power to the relay 301, the power supply unit 302, and the power supply unit 306, and completes the transition to the low power consumption power saving mode.

FIG. 5 is a flowchart for explaining the control method of the image forming apparatus according to this embodiment. This example is an example of a power saving mode recovery sequence. Note that each step is realized by a sub CPU (not shown) of the power control unit 312 loading a control program into a memory and executing it. Hereinafter, control of the timing for shifting to the second power saving state in this embodiment will be described.
First, in order to confirm whether an instruction to shift from the power saving mode to the normal mode has been issued, the power control unit 312 checks the state of the power saving mode release button of the network processing unit 313, the motion sensor unit 104, and the operation unit 319. Confirm (S701). When the power control unit 312 determines that there is no instruction to shift to the normal mode, it periodically polls the state of each unit until an instruction to shift to the normal mode is issued (NO in S701). When the power control unit 312 determines that there is an instruction to shift to the normal mode (YES in S701), the power control unit 312 turns on the relay 301, the power supply unit 302, and the power supply unit 306 to start supplying power to each unit. (S702).

When power is supplied to the CPU unit 317, the CPU unit 317 executes power saving mode return processing. In the power saving mode return processing, first, the CPU unit 317 executes software power saving mode return processing such as restoring data in the image processing unit 318 according to the control program stored in the HDD unit 316 and the memory unit 315 ( S703).

After the power saving mode returning process is completed, the CPU unit 317 accesses the power supply control unit 312 in order to confirm the cause of the transition to the normal mode (S704). If it is determined that the cause of the shift to the normal mode is not the job return (NO in S704), the power control unit 312 maintains the normal mode state. If the power supply control unit 312 determines that the cause of the transition to the normal mode is the return from a job such as a print operation or a copy operation (YES in S704), the CPU unit 317 executes the job (S705), and after the job ends , the process execution history information 320 stored in the HDD unit 316 is updated (S706), and the process ends.

FIG. 6 is a flow chart for explaining the control method of the image forming apparatus according to this embodiment. This example is an example of a power saving mode recovery sequence. Note that each step is realized by a sub CPU (not shown) of the power control unit 312 loading a control program into a memory and executing it. Control for switching the power supply state to be supplied from the power supply to each processing means to the power saving state based on the operation state by the operation means and the job execution state by the processing means will be described below.
First, when the image forming apparatus 100 returns from the power saving mode and is in the normal mode, the CPU unit 317 detects whether there is a person in front of the image forming apparatus 100 via the power control unit 312 . The state of the unit 104 is confirmed (S501).

When the CPU unit 317 determines that there is a person in front of the image forming apparatus 100, polling is periodically performed until the state of the human sensor unit 104 indicates that there is no person (YES in S501). When the CPU unit 317 determines that there is no person in front of the image forming apparatus 100 (NO in S501), the CPU unit 317 checks the process execution history information 320 stored in the HDD unit 316 (S502). If the process execution history information 320 does not have a job execution history after returning to the power saving mode (NO in S502), it is determined that the image forming apparatus 100 has been temporarily left (in use).

Therefore, in order to measure a preset time, the CPU unit 317 resets the timer unit 314, sets the time to be measured in the timer unit 314, and then activates the timer unit 314 to start measuring the predetermined time ( S503). After the timer unit 314 is activated, the CPU unit 317 determines the state of the human sensor unit 104 via the power supply control unit 312 to determine whether a person is present in front of the image forming apparatus 100 (whether the person has returned). (S504). When the CPU unit 317 determines that there is a person in front of the image forming apparatus 100 (YES in S504), the CPU unit 317 resets the timer unit 314 to stop measuring the predetermined time (S506). back to

After the timer section 314 is reset, the CPU section 317 periodically polls the state of the human sensor section 104 until the state of the human sensor section 104 becomes a state where no one is present. When the CPU unit 317 determines that there is no person in front of the image forming apparatus 100 (NO in S504), the timer count value of the timer unit 314 is checked, and if a preset predetermined time has not elapsed (S505 NO), the state of the human sensor unit 104 is checked again.

If the preset time has passed (YES in S505), the CPU unit 317 executes power saving mode transition processing to shift to a power saving mode with low power consumption (S507). Also, if the process execution history information 320 includes a job execution history after returning to the power saving mode (YES in S502), the CPU unit 317 executes the power saving mode shift process to shift to the power saving mode (S507). , the process ends.

As described above, according to the present embodiment, when the human detection means detects that the user has left after executing a job such as copying, the system immediately shifts to the power saving mode. It is possible to reduce consumption as much as possible. In addition, when it is detected that the user has left while the job is not being executed, the normal mode is maintained for a certain period of time, so it is possible to maintain the convenience of the user.

[Second embodiment]
In the present embodiment, a power saving mode transition sequence will be described in the case of detecting that the operating unit has been operated after returning from the power saving mode. Note that the configuration of the image forming apparatus is the same as that of the first embodiment, so the description is omitted.

FIG. 7 is a flow chart for explaining the control method of the image forming apparatus according to this embodiment. This example is an example of a power saving mode recovery sequence. Note that each step is realized by a sub CPU (not shown) of the power control unit 312 loading a control program into a memory and executing it.
First, when the image forming apparatus 100 returns from the power saving mode and is in the normal mode, the CPU unit 317 detects whether there is a person in front of the image forming apparatus 100 via the power control unit 312 . The state of the unit 104 is confirmed (S601). When the CPU unit 317 determines that there is a person in front of the image forming apparatus 100, polling is periodically performed until the state of the human sensor unit 104 indicates that there is no person (YES in S601). When the CPU unit 317 determines that there is no person in front of the image forming apparatus 100 (NO in S601), the CPU unit 317 checks the process execution history information 320 stored in the HDD unit 316 (S602). If the process execution history information 320 does not include the job execution history after returning to the power saving mode (NO in S602), the CPU unit 317 checks the operation history information 321 stored in the memory unit 315 (
S603).

If the operation history information 321 includes the operation history of the operation unit after returning to the power saving mode (YES in S603), it is determined that the image forming apparatus 100 has temporarily left the image forming apparatus 100 (in use). Therefore, in order to measure a preset time, the CPU unit 317 resets the timer unit 314, sets the time to be measured in the timer unit 314, and then activates the timer unit 314 to start time measurement (S604). . After activating the timer unit 314 , the CPU unit 317 detects whether there is a person in front of the image forming apparatus 100 (whether the person (operator) has returned). is confirmed (S605).

When the CPU unit 317 determines that there is a person in front of the image forming apparatus 100 (YES in S605), the CPU unit 317 resets the timer unit 314 to stop time measurement (S607). After the timer unit 314 is reset, the CPU unit 317 periodically polls the state of the human sensor unit 104 until the state of the human sensor unit 104 becomes a state where no one is present.

When the CPU unit 317 determines that there is no person in front of the image forming apparatus 100 (NO in S605), the timer count value of the timer unit 314 is checked, and if the preset time has not passed (NO in S606). ), and confirms the state of the human sensor unit 104 again. If the preset time has passed (YES in S606), the CPU unit 317 executes power saving mode transition processing to shift to a power saving mode with low power consumption (S608).

Also, if the process execution history information 320 includes a job execution history after returning to the power saving mode (YES in S602), the CPU unit 317 executes the power saving mode shift process to shift to the power saving mode (S608). ). Also, if the operation history information 321 does not have an operation history after returning to the power saving mode (NO in S603), the CPU unit 317 executes power saving mode shift processing to shift to the power saving mode (S608).

As described above, according to the present embodiment, when it is detected that the user has left the operation unit while neither the operation unit nor the job is being executed, the system immediately shifts to the power saving mode, resulting in wasteful power consumption. can be minimized. In addition, when the human detection means detects that the user has left while the operation unit is being operated but the job is not being executed (e.g., when the user goes out to pick up the recording paper, etc.), the Since the mode is maintained, the user's convenience can be maintained.

Each step of the present invention can also be realized by executing software (program) acquired via a network or various storage media in a processing device (CPU, processor) such as a personal computer (computer).

The present invention is not limited to the above embodiments, and various modifications (including organic combinations of each embodiment) are possible based on the gist of the present invention, and they are excluded from the scope of the present invention. isn't it.

104 human sensor unit 312 power control unit 317 CPU unit 318 image processing unit

Claims (28)

A processing device comprising detection means for detecting a person and an operation unit operated by an operator, and supplying power to one or more devices based on detection of a person by the detection means,
If the operator operates the operation unit before a predetermined condition is satisfied after power is supplied to the one or more devices based on the detection of a person by the detection unit, the operation of the operation unit is performed in a predetermined manner. power to the one or more devices is stopped when the time elapses, and the operation unit is operated by the operator after power is supplied to the one or more devices based on detection of a person by the detection means; and stopping power to the one or more devices without waiting for the predetermined time if the predetermined condition is satisfied without being operated by the device. 2. The processing apparatus of claim 1, wherein power to said one or more devices is not turned off before said predetermined condition is met. The operation unit is a liquid crystal panel,
When the liquid crystal panel is operated before the predetermined condition is met after power is supplied to the one or more devices based on the detection of a person by the detection means, a predetermined time has passed since the operation of the liquid crystal panel. 3. A processing apparatus according to claim 1 or 2, wherein power to the one or more devices is terminated when a period of time has elapsed. The operation unit is a hard key,
When the hard key is operated before the predetermined condition after power is supplied to the one or more devices based on the detection of a person by the detection means, a predetermined time has elapsed since the operation of the hard key. 3. A processing apparatus according to claim 1 or 2, wherein power to the one or more devices is terminated when a period of time has elapsed. 5. The processing apparatus according to any one of claims 1 to 4, wherein said detection means is a pyroelectric sensor. 6. The processing apparatus according to any one of claims 1 to 5, wherein said detection means is an infrared sensor that receives infrared rays. 6. The processing apparatus according to any one of claims 1 to 5, wherein said detection means is an infrared sensor that outputs infrared rays and receives infrared rays. 4. The processing apparatus according to any one of claims 1 to 3, wherein said detection means is detection means for detecting movement of a person. 4. The processing apparatus according to any one of claims 1 to 3, wherein said detection means is detection means for detecting the presence of a person. 10. The processing apparatus according to any one of claims 1 to 9, wherein the operation unit has a display unit and a reception unit that receives an operation by an operator. further equipped with a display,
10. The processing apparatus according to any one of claims 1 to 9, wherein said one or more devices include said display unit. 12. The processing apparatus according to claim 11, wherein said display unit is a liquid crystal panel. 13. The processing apparatus according to any one of claims 1 to 12, further comprising a printing section that performs printing. 14. The processing apparatus according to any one of claims 1 to 13, further comprising a scanner section that performs scanning. A power control method for a processing device comprising a detection means for detecting a person and an operation unit operated by an operator, wherein power is supplied to one or more devices based on detection of a person by the detection means,
If the operator operates the operation unit before a predetermined condition is satisfied after power is supplied to the one or more devices based on the detection of a person by the detection unit, the operation of the operation unit is performed in a predetermined manner. power to the one or more devices is stopped when the time elapses, and the operation unit is operated by the operator after power is supplied to the one or more devices based on detection of a person by the detection means; If the predetermined condition is satisfied without being operated by the device, power to the one or more devices is stopped based on the fact that the person is no longer detected by the detection means.
A power control method for a processing device, characterized by: If the operator operates the operation unit before the predetermined condition is satisfied after power is supplied to the one or more devices based on the detection of a person by the detection unit, the operation unit is before the predetermined condition is satisfied. 16. The power control method of a processing unit according to claim 15, wherein power to said one or more devices is not stopped. The operation unit is a liquid crystal panel,
When the liquid crystal panel is operated before the predetermined condition is met after power is supplied to the one or more devices based on the detection of a person by the detection means, a predetermined time has passed since the operation of the liquid crystal panel. 17. The power control method of a processing unit according to claim 15 or 16, further comprising stopping power to said one or more devices when the time has elapsed. The operation unit is a hard key,
When the hard key is operated before the predetermined condition after power is supplied to the one or more devices based on the detection of a person by the detection means, a predetermined time has elapsed since the operation of the hard key. 17. The power control method of a processing unit according to claim 15 or 16, further comprising stopping power to said one or more devices when the time has elapsed. 18. The power control method for a processing apparatus according to claim 15, wherein said detection means is a pyroelectric sensor. 20. The power control method for a processor according to claim 15, wherein said detection means is an infrared sensor for receiving infrared rays. 20. The power control method for a processor according to claim 15, wherein said detection means is an infrared sensor that outputs and receives infrared rays. 18. The power control method for a processor according to claim 15, wherein said detection means is detection means for detecting movement of a person. 18. The power control method for a processor according to claim 15, wherein said detection means is detection means for detecting the presence of a person. 24. The power control method for a processing device according to claim 15, wherein said operation unit has a display unit and a reception unit that receives an operation by an operator. further equipped with a display,
24. The power control method for a processing unit according to any one of claims 15 to 23, wherein said one or more devices include said display unit. 26. The power control method of a processing device according to claim 25, wherein said display unit is a liquid crystal panel. 27. The power control method for a processing device according to any one of claims 15 to 26, further comprising a printing unit that performs printing. 28. The power control method for a processing device according to any one of claims 15 to 27, further comprising a scanner unit that performs scanning.

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