JP2002252740A - Image reader, its control method and controller, and information processing unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the power consumption of an image reader and to enhance its operability. SOLUTION: This invention provides a control method for the image reader that is set to a usual mode where required power is supplied for usual operations and set to a power-saving mode where the supply of power is restricted, and the method includes a prescribed condition discrimination step (S13) of discriminating whether or not a preset prescribed condition is obtained during the usual mode, a state discrimination step (S16) of discriminating a state of the image reader when the prescribed condition discrimination step discriminates that the condition reaches the prescribed condition, and an inhibit step (S16) of inhibiting switching from the usual mode to the power-saving mode depending on the state discriminated by the state discrimination step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus and a control method thereof, and more particularly, to an image reading apparatus having a mode for supplying power required for performing a normal operation and a mode for regulating power supply, and control thereof. About the method.

[0002]

2. Description of the Related Art In a conventional image reading apparatus, switching from a normal mode for supplying power necessary for performing a normal operation to a power saving mode for regulating power supply is performed by:
This is performed when a predetermined condition such as the elapse of a predetermined time is detected, and switching from the power saving mode to the normal mode is performed by interruption from an operation panel or a connected operation device.

[0003]

In the above conventional method,
When the predetermined condition is detected, even if the image reading apparatus is not in a state suitable for power saving, a transition from the normal mode to the power saving mode is performed, which may cause inconvenience in operation. Was.

[0004] The present invention has been made in view of the above problems, and has as its object to reduce the power consumption of an image reading apparatus and improve operability.

[0005]

In order to achieve the above object, an image reading apparatus according to the present invention has a normal mode for supplying power necessary for performing a normal operation and a power saving mode for restricting power supply. The apparatus includes a switching unit that switches between the normal mode and the power saving mode based on a predetermined condition set in advance, a determination unit that determines a state of the image reading device, and a state that is determined by the determination unit. Control means for prohibiting switching by the switching means.

Further, the control method according to the present invention for an image reading apparatus having a normal mode for supplying electric power required for performing a normal operation and a power saving mode in which power supply is regulated, comprises: A predetermined condition determining step of determining whether or not a predetermined condition is set in advance, and when it is determined that the predetermined condition is satisfied in the predetermined condition determining step,
A state determining step of determining a state of the image reading apparatus; and a prohibiting step of prohibiting switching from the normal mode to the power saving mode in accordance with the state determined in the state determining step.

According to a preferred aspect of the present invention, the judging means includes means for judging a conveyance state of the read original in the image reading apparatus. The control unit prohibits switching from the normal mode to the power saving mode, and the state determining step includes a step of determining a transport state of a read original in the image reading apparatus. When the state is detected, the switching from the normal mode to the power saving mode is prohibited in the prohibiting step.

According to a preferred aspect of the present invention, the image reading apparatus controls the original movement to be in a first state involving the movement of the original or a second state involving no movement of the original. Means, wherein the determination means includes means for determining a moving state of the document, and when in the first state, the control means switches from the normal mode to the power saving mode; The state determination step includes a step of determining a movement state of the document. When the document is in the first state, the prohibition step prohibits switching from the normal mode to the power saving mode.

According to a preferred aspect of the present invention, the image reading apparatus includes: a document table on which a document to be read is placed; and a first state in which the document table is supplied to the image reading apparatus. A platen control unit that controls the document platen to be in a second state for placing the document on the platen; wherein the determination unit includes a unit that determines a state of the platen; In the state of 1, the control means prohibits switching from the normal mode to the power saving mode, and the state determining step includes a step of determining a state of the platen, wherein the platen is in the first position. In the state, the switching from the normal mode to the power saving mode is prohibited in the prohibiting step.

According to a preferred aspect of the present invention, the image reading apparatus further includes an illuminating means for illuminating the original to be read, and the determining means includes means for stabilizing a light amount of the illuminating means. Including means for determining whether or not the residual heat treatment has been completed, when the residual heat treatment has not been completed, the control means inhibits switching from the normal mode to the power saving mode, the state determination step, A step of determining whether or not a residual heat treatment for stabilizing the light amount of the illuminating means has been completed; if the residual heat treatment has not been completed, in the prohibition step, switching from the normal mode to the power saving mode is performed. Ban.

According to a preferred aspect of the present invention, the image reading device further includes an adjustment processing unit for acquiring a set value used at the time of image reading, and the determination unit is configured to execute the processing by the adjustment processing unit. The control means prohibits switching from the normal mode to the power saving mode when the processing is being performed, and the state determining step includes a processing performed by the adjustment processing means. A step of determining whether or not the power saving mode is in progress. If the processing is being performed, the prohibition step prohibits switching from the normal mode to the power saving mode.

According to still another preferred aspect of the present invention, the image reading apparatus further includes an illuminating unit for illuminating the original to be read, and the adjustment processing unit adjusts the light of the illuminating unit. In the state determination step, it is determined whether or not the dimming process of the illumination unit is being performed by the adjustment processing unit.

According to a preferred aspect of the present invention, the image reading apparatus further includes a receiving unit for receiving a prohibition command for prohibiting switching from the normal mode to the power saving mode, and the determining unit includes: It is determined whether or not the prohibition command has been received from the receiving means. When the prohibition command has been received, the control means prohibits switching from the normal mode to the power saving mode. Further, the control method further includes a step of receiving a prohibition command for prohibiting switching from the normal mode to the power saving mode, and the state determining step determines whether or not the prohibition command has been received. In the prohibition step, switching from the normal mode to the power saving mode is prohibited.

According to a preferred aspect of the present invention, the image reading apparatus further comprises means for receiving a command for instructing the operation of the image reading apparatus. Then, the switching unit switches from the power saving mode to the normal mode. Also, the control method may include, during the power saving mode operation,
The method further includes a step of receiving a command for instructing the operation of the image reading device, and a step of switching from the power saving mode to the normal mode when a command is received in the power saving mode.

According to the above configuration, the transition from the normal mode to the power saving mode is restricted in accordance with the state of the image reading apparatus, thereby suppressing the power consumption of the image reading apparatus and improving the operability. Can be.

According to another aspect of the present invention, there is provided an image reading apparatus comprising: a normal mode for supplying power required for performing a normal operation; and a power supply to at least a part of the apparatus. A plurality of power-saving modes in which supply is regulated, a determination unit that determines a state of the image reading apparatus, and the normal mode according to a predetermined condition set in advance and a state determined by the determination unit. Switching means for switching between the plurality of power saving modes.

Further, according to the present invention, there is provided a control of an image reading apparatus having a normal mode for supplying power required for performing a normal operation and a plurality of power saving modes for restricting power supply to at least a part of the apparatus. A method includes: a predetermined condition determining step of determining whether or not a predetermined condition set in advance during the normal mode operation; and when the predetermined condition determining step determines that the predetermined condition is satisfied, the image is displayed. A state determining step of determining a state of the reading device; and a switching step of switching from the normal mode to one of the plurality of power saving modes according to the state determined in the state determining step.

According to a preferred aspect of the present invention, the switching means switches from the normal mode in accordance with a predetermined condition set in advance and a state determined by the determining means.
Switching to the power saving mode corresponding to the state of the image reading apparatus, and in the switching step, the normal mode and the plurality of power saving modes are switched from the normal mode according to a predetermined condition set in advance and a state determined in the determination step. Switch to one.

According to a preferred aspect of the present invention, the determining means includes means for determining a transport state of the read original in the image reading apparatus, and the determining means detects a transport failure state. The switching unit switches from the normal mode to a power saving mode in which power is supplied to a configuration necessary for detecting a document in the transport path. Further, the state determining step includes a step of determining a transport state of the read original in the image reading apparatus, and when a transport failure state is detected in the state determining step, the switching step includes, from the normal mode, The mode is switched to a power saving mode for restricting power supply to components other than those necessary for detecting a document in the transport path.

According to a preferred aspect of the present invention, the image reading apparatus includes a document table on which a document to be read is placed, and a first state for supplying the document to the image reading apparatus. A platen control unit that controls the document platen to be in a second state for placing the document on the platen; wherein the determination unit includes a unit that determines a state of the platen; In the state of 1, the switching means switches from the normal mode to a power saving mode for restricting power supply to components other than those required to change the state of the platen. A step of determining the state of the platen, wherein, when the platen is in the first state, the switching step includes switching from the normal mode to a configuration other than a configuration necessary to change the state of the platen. Power saving mode that regulates power supply Switch to.

According to a preferred aspect of the present invention, the image reading apparatus further includes control means for prohibiting switching by the switching means in accordance with the state determined by the determining means. The control method further includes a prohibition step of prohibiting switching in the switching step according to the state determined in the state determination step.

According to a preferred aspect of the present invention, the image reading apparatus further includes an illuminating means for illuminating the original to be read, and the determining means includes means for stabilizing a light amount of the illuminating means. Including means for determining whether or not the residual heat treatment has been completed, when the residual heat treatment has not been completed, the control means inhibits switching from the normal mode to the power saving mode, the state determination step, The method includes a step of determining whether or not a residual heat treatment for stabilizing the light amount of the illuminating means is completed. If the residual heat treatment is not completed, the prohibition step prohibits the switching in the switching step.

According to a preferred aspect of the present invention, the image reading apparatus further includes an adjustment processing unit for acquiring a set value used at the time of image reading, and the determination unit performs processing during the processing by the adjustment processing unit. The control means prohibits switching from the normal mode to the power saving mode when the processing is being performed, and the state determining step includes a processing performed by the adjustment processing means. A step of determining whether or not the switching is being performed; if the processing is being performed, the prohibition step prohibits the switching in the switching step.

According to a preferred aspect of the present invention, the image reading apparatus further includes an illuminating means for illuminating the original to be read, and the adjustment processing means adjusts the light of the illuminating means. Including light means. Further, in the state determination step, it is determined whether or not the dimming process of the illumination unit is being performed by the adjustment processing unit.

According to a preferred aspect of the present invention, the image reading apparatus further includes a receiving unit for receiving a prohibition command for prohibiting switching from the normal mode to the power saving mode, and the determining unit includes: It is determined whether or not the prohibition command has been received from the receiving means. When the prohibition command has been received, the control means prohibits switching from the normal mode to the power saving mode. Further, the control method further includes a step of receiving a prohibition command for prohibiting switching from the normal mode to the power saving mode, and the state determining step determines whether or not the prohibition command has been received. In the prohibition step, switching from the normal mode to the power saving mode is prohibited.

According to a preferred aspect of the present invention, the image reading apparatus further includes a unit for receiving a command for instructing an operation of the image reading apparatus. Then, the switching unit switches from the power saving mode to the normal mode. In addition, the control method may include, during the power saving mode operation, receiving a command instructing an operation of the image reading apparatus; and, when a command is received in the power saving mode, changing from the power saving mode to the normal mode. And a step of switching to.

According to the above configuration, by shifting to a different power saving mode depending on the state of the image reading apparatus, it is possible to further reduce the power consumption while improving the operability of the operator.

Further, in order to achieve the above object, a control device and an information processing device of the present invention execute any one of the above control methods, and a program of the present invention realizes any of the above methods. .

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. First, the configuration of the image reading device according to the present embodiment will be described. FIG. 1 is a control block diagram of the image reading device according to the present embodiment, and FIG. 2 is a schematic configuration diagram of the image reading device according to the present embodiment.

The image reading device is controlled by using an information processing device such as a personal computer (PC) 900 connected via SCSI, and reads an image via the PC 900. As shown in FIG. 1, the image reading apparatus according to the present embodiment includes an image processing control unit 100, a main motor control unit 2
00, and communicates with the apparatus controller 500 having the platen motor controller 300, the clutch / sensor controller 400, the CPU 501, the EEPROM 502, the flash memory 503, and the memory 504, the switching power supply 600, the regulator 700, and the external PC 900. SCS for
And an I controller 800. Switching power supply 6
00, the power supply can be controlled for each control unit in the device control unit 500.

When the image reading device is capable of reading both sides of the document, the image processing control unit 100 includes, for example, a front image analog processor 101 for processing analog image data of the front image, and a front image analog processor 101 for processing the back image. Analog processor for back image 1 for processing analog image data
02, an LED voltage / current control circuit for controlling an LED for notifying an operator of an operation state or an error state of the image processing apparatus, and an analog image processed by the front image analog processor 101 and the rear image analog processor 102 An image processor 10 that performs predetermined image processing such as γ correction and white balance correction on data
4 and a FIFO memory 105 and an SD-RAM 106 used for image processing by the image processor 104 and for temporarily storing the processed image.

The main motor 200 has a main motor drive circuit 20 for driving a main motor 2 to be described later.
The platen motor control unit 300 has a platen motor drive circuit 301 for driving the platen motor 1, and the clutch / sensor control unit 400 has a clutch drive / sensor input unit 401. Have.

The image reading apparatus has a document transport structure as shown in FIG. 2, and has a mechanism for feeding, reading, and discharging a document. The image reading unit 11 shown in FIG. 2 corresponds to the image processing controller 100 shown in FIG. 1, the main motor 2 shown in FIG. 2 corresponds to the main motor controller 200 shown in FIG. 1, and the platen motor 1 shown in FIG. The CPU 501 controls the platen motor control unit 300 to operate the sensors and clutches shown in FIG. 2 by controlling the clutch / sensor control unit 400 shown in FIG.

Further, a registration sensor 7, a scanning start sensor 8, and a paper discharge sensor 9 are provided as document detection means for detecting the conveyance state of the image reading device. In the present embodiment, a document table 1 which is a document feeding mechanism that moves up and down when feeding a document is used as a driving mechanism that drives during document feeding and discharging and document transport.
2 is provided. Here, a device having a document feeding mechanism is described as an example of the driving mechanism, but a device having a document discharging mechanism that moves up and down when discharging the document may be used.

Further, a registration sensor 7, a scanning start sensor 8, and a paper discharge sensor 9 are provided as document detection means for detecting the conveyance state of the image reading apparatus. In the present embodiment, a document table 1 which is a document feeding mechanism that moves up and down when feeding a document is used as a driving mechanism that drives during document feeding and discharging and document transport.
2 is provided. Here, a device having a document feeding mechanism is described as an example of the driving mechanism, but a driving mechanism that moves up and down when feeding and discharging the document as described later, and is also used as a feeding mechanism and a discharging mechanism. Good with.

The operation of each component will be described below with reference to FIG. A document is placed on a document table 12 that moves up and down as the document table motor 1 rotates. External PC 9 in FIG.
When a SCSI interrupt for instructing image reading is transmitted to the image reading apparatus via the SCSI controller 800 in step 00, the document table 12 is raised, and the paper feed sensor 6 confirms the presence or absence of a document. When a document is detected, the main motor 2 is turned, and the paper feed clutch 3 is engaged to start turning the paper feed roller 13 to which the drive of the main motor 2 is transmitted. Also, by connecting the separation clutch 4, the main motor 2
Is also started to rotate at the same time. With these controls, only the top document among the loaded documents is started to be conveyed into the conveyance path.

When a document is fed into the transport path and the registration sensor 7 detects the leading edge of the document, the registration sensor informs the position of the document and connects the registration clutch 5 to rotate the registration roller 16 to which the drive of the main motor 2 is transmitted. start.
When the scanning start sensor 8 detects the leading edge of the conveyed document, the document reading unit 11 starts capturing an image.

On the other hand, when the registration sensor 7 detects the trailing end of the document that has entered the transport path, the paper feed roller 13 is stopped, and the presence or absence of the document on the document table 12 is checked by the paper feed sensor 6. If there is no original, rotate the platen motor 1
2 is lowered, and if there is a document, the document table 12 is left as it is without lowering. When the scanning start sensor 8 detects the trailing edge of the document, the reading of the document image by the document reading unit 11 ends. The document whose image has been completely captured is further conveyed, and the discharge sensor 9 sequentially detects the leading edge of the document and the trailing edge of the document, thereby confirming discharge.

When the original is transported as described above, the original is transported while controlling the respective mechanisms. When each sensor detects the stagnation or delay of the original, the CPU 501 of FIG.
Is determined to be in a conveyance failure state based on information input from each sensor via the clutch drive / sensor input unit 401. In this case, an operation panel and / or an image processor 104 and an LED voltage / current control circuit 103 (not shown) turn on an LED to indicate that the sheet is in a conveyance failure state, and a message is displayed on the external PC 900 connected to the SCSI. To notify the operator. In response to this notification, the operator opens the upper unit 18, removes the staying document, and closes the upper unit 18.
As a result, the image reading apparatus lowers the document table 12 to enter a document conveyance standby state, and can release the conveyance failure state.

After the power is turned on, the image reading apparatus
If there is no SI interrupt for 3 minutes or the last SCSI
A description will be given of a case in which the mode is shifted from the normal mode to the power saving mode when three minutes have elapsed since the interruption, but the elapsed time is not limited to three minutes and can be changed as appropriate. Further, in the present embodiment, the elapse of a predetermined time is used as the transition condition. However, for example, a power saving instruction by a SCSI interrupt may be used as the transition condition, or the power saving from the operation panel may be used if the device has an operation panel. The conversion instruction may be used as the transition condition, and various transition conditions can be used. Further, the interrupt is not limited to the SCSI interrupt, and may be communication based on another standard such as serial communication.

<First Embodiment> First, the basic operation of the first embodiment of the present invention in the image reading apparatus having the above configuration will be described. The flowchart shown below is stored in the flash memory 503 in FIG.
01 is a program to be executed.

FIG. 3 is a flowchart for explaining the basic operation of the image reading apparatus according to the first embodiment.

After the power of the image reading apparatus is turned on, power supply to the image processing control unit 100, the main motor control unit 200, the platen motor control unit 300, and the clutch / sensor control unit 400 is started in the normal mode ( Step S10),
Each part of the image reading apparatus is initialized (step S11), and a timer for measuring a time required to shift to a preset power saving mode is started (step S12). It is checked whether the timer has elapsed for 3 minutes (step S13). If not, it is checked whether a command due to a SCSI interrupt has come (step S14). If a SCSI interrupt has been received, a corresponding process is performed (step S1).
5) Return to step S12 to reset and restart the timer.

On the other hand, if no SCSI interrupt has been received (NO in step S14), the flow returns to step S13 to check the timer again. If the timer has elapsed for 3 minutes (NO in step S13), that is, if there has been no SCSI interrupt for 3 minutes after power-on, or if 3 minutes have elapsed since the last SCSI interrupt, the state of the image reading device is checked. (Step S16). If it is in a state where power saving can be performed, in step S17, the process shifts from the normal mode to power supply control in the power saving mode, and the apparatus control unit 500 in FIG. 1 saves power and enters a sleep state (step S18).

If power saving cannot be performed (NO in step S16), the process returns to step S12, and the power saving timer is reset and started again.

FIG. 3B is a flowchart showing step S1 of FIG.
8 shows an operation in a sleep state. In the sleep state, it is determined in step S181 whether a SCSI interrupt has occurred. If there is no SCSI interrupt, step S181
Is repeated, and if there is a SCSI interrupt, step S1
Proceeding to 82, the mode is shifted from the power saving mode to the normal mode, and the power saving of the device control unit 500 is released. afterwards,
Returning to step S12 in FIG. 3A, the timer is reset and restarted.

As described above, in the image reading apparatus which shifts from the normal mode to the power saving mode when there is no SCSI interrupt for a predetermined time after the power is turned on or when a predetermined time has elapsed since the last SCSI interrupt, the power saving is actually performed. The state of the device is determined before shifting to the power saving mode. If it is determined that the mode cannot be shifted to the power saving mode, the shifting to the power saving mode is prohibited, thereby improving the operability of the operator according to the status of the device. Considered power saving can be achieved.

Next, some examples of the details of the determination as to whether or not the power saving state is made in step S16 in FIG. 3 will be described with reference to FIGS. 4 to 8. FIG.

1. Transport status

First, a case where it is determined whether or not the mode can be switched to the power saving mode based on the transport state will be described with reference to FIG.

After the power of the image reading apparatus is turned on, power supply to the image processing control unit 100, the main motor control unit 200, the platen motor control unit 300, and the clutch / sensor control unit 400 is started in the normal mode. Step S20),
Each unit of the image reading apparatus is initialized (step S21), and a timer for measuring a time required to shift to a preset power saving mode is started (step S22). It is checked whether the timer has elapsed for 3 minutes (step S23). If not, it is checked whether a command by a SCSI interrupt has come (step S24). If a SCSI interrupt has been received, a corresponding process is performed (step S2).
5) Return to step S22 to reset and restart the timer.

On the other hand, if no SCSI interrupt has been received (NO in step S24), the flow returns to step S23 to check the timer again. If the timer has elapsed for 3 minutes (NO in step S23), that is, if no SCSI interrupt has occurred for 3 minutes after the power is turned on, or if 3 minutes have elapsed since the last SCSI interrupt, the image reading apparatus is in a transport failure state. It is confirmed whether or not it is (step S26). As described above, whether or not the sheet is in the conveyance failure state can be determined based on the detection of the leading edge and the trailing edge of the document from each sensor.

If the state is not the conveyance failure state, the shift to the power saving mode is permitted (NO in step S26), the normal mode is shifted to the power saving mode, and the power of the apparatus control unit 500 in FIG. 1 is reduced (step S27). Then, it is set to the sleep state (step S28).

In the case of a conveyance failure state, the shift to the power saving mode is prohibited (YES in step S26), and until the staying document is removed (that is, step S26).
Wait until YES at 29). When the conveyance failure state is released (YES in step S29), the document table 12
Post-transfer failure processing such as lowering the paper (step S3
0), return to step S22, reset the timer, and restart.

The operation in the sleep state in step S28 is the same as that described with reference to FIG.

If the operation mode is shifted to the power saving mode while the conveyance failure state is present, even if the operator removes the stuck original, it cannot be detected by the apparatus side. Although the state remains as it is, by prohibiting the shift to the power saving mode during the conveyance failure state as in the above-described embodiment, the document table can be lowered in accordance with the operation of the operator. After returning to the state at the time of carrying standby, power saving can be performed.

In the above example, three minutes were measured again after the conveyance failure state was released. However, the control is performed such that the operation is immediately shifted to the power saving mode as soon as the conveyance failure state is released and the processing is completed. You may make it.

2. Platen status

Next, a description will be given, with reference to the flowchart of FIG. 5, of a process of shifting to the power saving mode in a device having a document table which moves up and down during document conveyance.

After the power of the image reading apparatus is turned on, power supply to the image processing control unit 100, the main motor control unit 200, the platen motor control unit 300, and the clutch / sensor control unit 400 is started in the normal mode ( Step S40),
Initialization of each unit of the image reading apparatus including the process of lowering the platen 12 is performed (step S41), and a timer for measuring a time required for shifting to a preset power saving mode is started (step S42).

Next, it is checked whether or not the document table 12 has been raised (step S43). If the document table 12 has been raised, the paper feed sensor 6 determines whether or not a document is present on the document table 12. Confirmation (Step S44), and if there is no original, lower the original platen 12 (Step S45). If there is an original, the original platen 12 is kept up and step S4
Proceed to 6. If the platen 12 is lowered in step S43, the process proceeds directly to step S46 with the platen 12 kept down.

Next, it is confirmed whether or not the timer has elapsed for 3 minutes (step S46). If not, it is confirmed whether or not a command by a SCSI interrupt has come (step S47). If a SCSI interrupt has been received, processing corresponding to the command is performed (step S50). In particular, if the command is a command for instructing the start of document scanning,
In step S48, the document table 12 is raised so that the document can be fed. In step S49, the document is fed and the image is read. Thereafter, the process returns to step S42 to reset the timer and restart.

On the other hand, if the SCSI interrupt has not been received (NO in step S47), after confirming and controlling the document table 12 again (steps S43 to S45), the timer is confirmed (step S46). If the timer has elapsed for 3 minutes (NO in step S46), that is, there is no SCSI interrupt for 3 minutes after power-on, or the last SCSI
If three minutes have passed since the interruption, it is checked whether or not the platen 12 has been raised (step S51). Platen 1
If the number 2 has decreased, the shift to the power saving mode is permitted (NO in step S51), the normal mode is shifted to the power saving mode, the power consumption of the device control unit 500 in FIG. 1 is reduced (step S52), and the sleep mode is set. State (step S5
3).

If the platen 12 is raised, the shift to the power saving mode is prohibited (YE in step S51).
S), the process returns to step S42 to reset and restart the timer.

Since the operation in the sleep state in step S53 is the same as that described with reference to FIG. 3B, the description will be omitted.

If the operator shifts to the power saving mode with the platen raised, even if the operator removes the document from the platen and attempts to place the document again, the apparatus cannot detect this, and the platen is raised. I couldn't put it back again because it was left behind. On the other hand, according to the present embodiment, it is possible to provide an image reading apparatus suitable for operation by an operator. In other words, by prohibiting the shift to the power saving mode when the platen is raised, as in the above-described embodiment, it is not possible to shift to the power saving mode while the platen is raised. In addition, the platen can be lowered properly, and after the platen has been lowered,
Power can be saved. By doing so, the operator can reload the original document if desired, and as a result, the apparatus is suitable for the operator.

In the above example, three minutes were measured again after lowering the platen in step S51, but control may be performed so as to immediately shift to the power saving mode as soon as the platen is lowered.

Further, in the present embodiment, the case of a document table as a document feeding mechanism section has been described as an example of the driving mechanism section. The transfer is prohibited. For example, a drive mechanism that moves up and down when a document is fed and discharged and that is also used as a paper feed mechanism and a paper discharge mechanism may be used. Even in such a case, by canceling the prohibition of the transition to the power saving mode after the movement of the document is completed, the document can be reloaded and taken out according to the operation of the operator.

Further, it is possible to use a carry-out table for receiving a document. If the mode shifts to the power saving mode in a state in which the document is being received by the carry-out table, the apparatus cannot detect this even if the operator removes the document from the document table and attempts to mount the document again. On the other hand, according to the present embodiment, it is possible to provide an image reading apparatus suitable for operation by an operator. In other words, the transition to the power saving mode while the document output tray is receiving the document is prohibited, the document output to the document output tray is completed, and the operator can take out the document. By canceling the prohibition of the transition to the power saving mode after the operation for facilitating the power saving, the power saving can be appropriately performed in accordance with the operation of the operator. By doing so, the operator can reload the original document if desired, and as a result, the apparatus is suitable for the operator.

3. Preheat condition

Next, the process of shifting to the power saving mode in an apparatus having a preheating function, which is a residual heat treatment for stabilizing the light amount of the light source, will be described with reference to the flowchart of FIG.

After the power of the image reading apparatus is turned on, power supply is started in the normal mode to the image processing control unit 100, the main motor control unit 200, the platen motor control unit 300, and the clutch / sensor control unit 400 ( Step S60),
Each part of the image reading apparatus is initialized (step S61), and the reading light source is turned on (step S62). This results in a preheat state. Next, a timer for measuring a time required to shift to a preset power saving mode is started (step S63).

It is confirmed whether the preheating has been performed for 5 minutes or more (step S64). If the preheating has not been performed for 5 minutes or more, the preheating is continued as it is. If the preheating has been performed for 5 minutes or more, the reading light source is turned off (step S64). S65), preheating ends. In the present embodiment, the preheating is performed by time control, but the present invention is not limited to this, and the preheating may be terminated when the temperature in the apparatus is detected and becomes equal to or higher than a certain temperature.

Next, it is confirmed whether or not the timer has elapsed for 3 minutes (step S66), and if not, it is confirmed whether or not a command by a SCSI interrupt has come (step S67). If a SCSI interrupt has been received, processing corresponding to the command is performed (step S70). If the command is a command for instructing the start of scanning of a document, an image is read in step S68, and the light source is turned off in step S69. . Thereafter, the process returns to step S63 to reset and restart the timer.

On the other hand, if the SCSI interrupt has not been received (NO in step S67), it is checked again whether preheating has been performed for 5 minutes or more (step S64), and the timer is checked (step S66). If the timer has elapsed for 3 minutes (NO in step S66), that is, if there is no SCSI interrupt for 3 minutes after the power is turned on, or if 3 minutes have elapsed since the last SCSI interrupt, it is checked whether preheating is in progress ( Step S71). If it is not during the preheating, the shift to the power saving mode is permitted (N in step S71).
O) The mode is shifted from the normal mode to the power saving mode, the power of the apparatus control unit 500 in FIG. 1 is reduced (step S72), and the apparatus controller 500 is set to the sleep state (step S73).

If preheating is being performed, the shift to the power saving mode is prohibited (YES in step S71), and the flow returns to step S63 to reset and restart the timer.

The operation in the sleep state in step S73 is the same as that described with reference to FIG. 3B, and a description thereof will not be repeated.

When the mode is shifted to the power saving mode during the preheating, the preheating cannot be performed reliably. However, as in the above-described embodiment, the shifting to the power saving mode during the preheating is prohibited. Thus, the preheating can be executed reliably, and power saving can be performed after the preheating is completed.

In the above example, three minutes were measured again after detecting that the preheating was being performed in step S71. However, as soon as the preheating was completed, control was performed so as to immediately shift to the power saving mode. Is also good.

4. Dimming state

Next, a description will be given, with reference to the flow chart of FIG. 7, of a process for shifting to the power saving mode in a device for performing a dimming process for adjusting the light amount of the reading light source and the output value from the reading sensor.

After the power of the image reading apparatus is turned on, power supply to the image processing control unit 100, the main motor control unit 200, the platen motor control unit 300, and the clutch / sensor control unit 400 is started in the normal mode ( Step S80),
The respective parts of the image reading apparatus are initialized (step S81), and a timer for measuring a time until a shift to a preset power saving mode is started (step S82). It is checked whether the timer has elapsed for 3 minutes (step S83). If not, it is checked whether a command due to a SCSI interrupt has come (step S84). If a SCSI interrupt has been received, processing corresponding to the command is performed (step S86). If the command is a command for instructing light control processing, light control processing is performed in step S85. In the present embodiment, the dimming process is performed as an example of the adjustment process. However, a white correction process for obtaining a white image correction parameter for each pixel of the reading sensor and a black correction process for obtaining a dark current correction parameter for each pixel of the reading sensor are performed. It may be processing.
Further, although the processing execution instruction is issued by the SCSI interrupt command, the processing execution instruction from the operation panel may be used as long as the apparatus has an operation panel. After each command processing, the process returns to step S82 to reset and restart the timer.

On the other hand, if no SCSI interrupt has been received (NO in step S84), the flow returns to step S83 to check the timer again. If the timer has elapsed for 3 minutes (NO in step S83), that is, if there is no SCSI interrupt for 3 minutes after the power is turned on, or if 3 minutes have elapsed since the last SCSI interrupt, it is checked whether or not the dimming process is in progress. (Step S87). When the dimming process is not being performed, the shift to the power saving mode is permitted (NO in step S87), the normal mode is shifted to the power saving mode, and the power of the device control unit 500 in FIG. 1 is reduced (step S88). Then, it is set to the sleep state (step S89). If the dimming process is being performed, the shift to the power saving mode is prohibited (YES in step S87), and the process returns to step S82 to reset and restart the timer.

The operation in the sleep state in step S89 is the same as that described with reference to FIG. 3B, and a description thereof will not be repeated.

If the mode shifts to the power saving mode during the dimming process, the process is interrupted in the middle of the dimming process, and the dimming process cannot be performed properly. By prohibiting the shift to the power saving mode during the dimming process as described above, the dimming process can be executed reliably, and the power saving can be performed after the dimming process is completed.

In the above example, three minutes were measured again after the dimming process was completed. However, control may be performed so as to immediately shift to the power saving mode as soon as the dimming process is completed. .

5. SCSI interrupt

Next, a description will be given, with reference to the flowchart of FIG. 8, of a process of shifting to a power saving mode in a device having a power saving prohibition function by a SCSI interrupt.

After the power of the image reading apparatus is turned on, power supply to the image processing control unit 100, the main motor control unit 200, the platen motor control unit 300, and the clutch / sensor control unit 400 is started in the normal mode ( Step S90),
Each section of the image reading apparatus is initialized (step S91), power saving is permitted (step S92), and a timer for measuring a time required for shifting to a preset power saving mode is started (step S93). It is checked whether the timer has elapsed for 3 minutes (step S94). If not, it is checked whether a command due to a SCSI interrupt has come (step S95). If a SCSI interrupt has been received, processing corresponding to the command is performed (step S100). If the command is a power saving control command, power saving control processing is performed (step S96).

In the power saving control processing in step S96,
When the power saving permission / inhibition is received and the power saving permission command is received (YES in step S97), the power saving permission state is set (step S98), and when the power saving prohibition command is received (step S97). (NO in step S99), and the power saving prohibition state is set (step S99). In the present embodiment, SC
Although the power saving control command is received by the SI interrupt command, a command from the control panel may be used as long as the device has a control panel. After each command processing, the process returns to step S93 to reset and restart the timer.

On the other hand, if no SCSI interrupt has been received (NO in step S95), the flow returns to step S93 to check the timer again. If the timer has elapsed for 3 minutes (NO in step S94), that is, if no SCSI interrupt has occurred for 3 minutes after power-on, or if 3 minutes have elapsed since the last SCSI interrupt, it is determined whether or not the power saving permission state has been reached. Confirm (step S101). If the state is the power saving permission state, the shift to the power saving mode is permitted (step S
1 (NO at 101), the power of the device control unit 500 in FIG. If the state is the power saving prohibition state, the shift to the power saving mode is prohibited (YE in step S101).
S), the process returns to step S93, resets the timer, and restarts.

The operation in the sleep state in step S103 is the same as that described with reference to FIG. 3B, and a description thereof will not be repeated.

As described above, by permitting / prohibiting the transition to the power saving mode by the power saving prohibition command, the power saving can be prohibited as required.

The control according to the specific state in the image reading apparatus may be performed for each state or may be performed by judging a plurality of states in combination.

<Second Embodiment> Next, the operation of the second embodiment of the present invention in the image reading apparatus having the configuration shown in FIGS. 1 and 2 will be described. The following flowchart is a program stored in the flash memory 503 in FIG. 1 and executed by the CPU 501.

In the second embodiment, the image processing control unit 100, the main motor control unit 200, the platen motor control unit 300, and the clutch / sensor control unit 400 in FIG. 1 are individually omitted as necessary. Perform power conversion.

An image processing control unit 100 other than the clutch / sensor control unit 400 that drives so as to detect whether or not there is a document in the conveyance path, a main motor control unit 200,
The power saving mode of the platen motor control unit 300 is SL
In the EEP1 mode, a platen motor control unit 300 for driving the platen 12 to be lowered when the document is pulled out from the platen 12 and a drive for detecting whether there is a document on the platen 12 or not. The mode in which the image processing control unit 100 and the main motor control unit 200 other than the clutch / sensor control unit 400 to perform power saving are the SLEEP2 mode, and the mode in which the entire device control unit 500 is power saving is S.
The LEEP3 mode is set.

Although the second embodiment shows an example in which three power saving modes are provided, the number may be changed as appropriate according to the function and configuration of the apparatus. In addition, since the content of the power saving mode is in accordance with the function of the device, the content may be other than the content of the second embodiment.

FIG. 9 is a flowchart showing a procedure for shifting to the power saving mode in an image reading apparatus having a document table which moves up and down during document conveyance and capable of detecting a state of document conveyance failure.

After the power is turned on, the image reading apparatus starts supplying power to the image processing control unit 100, the main motor control unit 200, the platen motor control unit 300, and the clutch / sensor control unit 400 in the normal mode. Step S11
0), initialization of each unit of the image reading apparatus including a process of lowering the platen 12 is performed (step S111), and a timer for measuring a time until shifting to a preset power saving mode is started (step S112). ).

Next, it is checked whether or not the document table 12 has been raised (step S113). If the document table 12 has been raised, the paper feed sensor 6 determines whether or not a document is present on the document table 12. The document is confirmed (step S114), and if there is no document, the document table 12 is lowered (step S115).
If there is a document, the process proceeds to step S116 with the document table 12 kept raised. If the platen 12 is lowered in step S113, the process proceeds directly to step S116 with the platen 12 kept down.

Next, it is confirmed whether the timer has elapsed for 3 minutes (step S116).
It is checked whether a command due to an interrupt has been received (step S117). If a SCSI interrupt has occurred, processing corresponding to the command is performed (step S120). In particular, if the command is a command for instructing the start of scanning of a document, the document table 12 is raised and the document is fed in step S118. In step S119, an original is fed and an image is read. Thereafter, the process returns to step S112 to reset and restart the timer.

If the SCSI interrupt has not been received (NO in step S117), after confirming and controlling the document table 12 again (steps S113 to S115), the timer is confirmed (step S116). If the timer has elapsed for 3 minutes (NO in step S116), that is, there is no SCSI interrupt for 3 minutes after power-on, or the last SC
If three minutes have passed since the SI interrupt, it is checked whether the image reading device is in a conveyance failure state (step S121).
As described above, whether or not the sheet is in the conveyance failure state can be determined based on the detection of the leading edge and the trailing edge of the document from each sensor.

If the transport is in a defective state (step S1)
21 (YES at 21), the power of the image processing control unit 100, the main motor control unit 200, and the platen motor control unit 300 is reduced (step S122), and the mode shifts to the SLEEP1 mode (step S123).

If the transport is not in a defective state (step S1
21 is NO), it is determined whether or not the platen 12 is raised (step S124). If the platen 12 is raised, the image processing controller 100 and the main motor controller 2
00 is power-saving (step S125), SLEEP2
The mode is shifted to (Step S126).

If the document table 12 is lowered (NO in step S124), the power of the entire device control section 500 is reduced (step S127), and the mode shifts to the SLEEP3 mode (step S128). FIG. 10 is a flowchart showing step S in FIG.
13 shows the operation in the SLEEP1 mode at 123. SL
In the EEP1 mode, it is checked whether or not the original in the conveyed conveying path has been removed (step S201). If the original has been removed, the process proceeds to step S203. Judge. If there is no SCSI interrupt, the process returns to step S201. If there is a SCSI interrupt, the process proceeds to step S203. In step S203, SLEE
The mode is shifted from the P1 mode to the normal mode, and the power saving of the image processing control unit 100, the main motor control unit 200, and the platen motor control unit 300 is released. Thereafter, the process returns to step S112 in FIG. 9 to reset the timer and restart.

FIG. 11 shows the operation in the SLEEP2 mode in step S126 of FIG. In the SLEEP2 mode, it is checked whether or not there is a document on the document table 12 (step S204).
The process proceeds to step S206 while keeping 2 raised. If there is no original, it is determined in step S205 whether a SCSI interrupt has occurred. If there is no SCSI interrupt, step S2
04, if there is a SCSI interrupt, step S2
Proceed to 06. In step S206, the mode is shifted from the SLEEP2 mode to the normal mode, and the power saving of the image processing control unit 100 and the main motor control unit 200 is released. Thereafter, the process returns to step S112 in FIG. 9 to reset the timer and restart.

FIG. 12 shows the operation in the SLEEP3 mode in step S128 of FIG. In the SLEEP3 mode, it is determined in step S207 whether a SCSI interrupt has occurred. If there is no SCSI interrupt, step S207 is repeated. If there is a SCSI interrupt, the process proceeds to step S208 to shift from the SLEEP3 mode to the normal mode and release the power saving of the device control unit 500. Thereafter, the process returns to step S112 in FIG. 9 to reset the timer and restart.

As described above, according to the second embodiment, the first
In addition to the features of the embodiment, since power saving is controlled for each control unit according to the state of the apparatus, power consumption can be further reduced.

<Third Embodiment> In the second embodiment, when three minutes have elapsed since the last SCSI interrupt (step S116), it is determined whether the image reading apparatus is in a conveyance failure state (step S116). S121) In the third embodiment, it is determined whether or not the image reading apparatus can shift to the power consumption mode before determining whether or not the sheet is in the conveyance failure state. An example of the operation procedure in this case is shown in the flowchart of FIG. In FIG. 10, the same processes as those in FIG. 9 are denoted by the same reference numerals, and description thereof will be omitted.

If three minutes have passed since the last SCSI interrupt (NO in step S116), it is checked whether or not the image reading device is dimming (step S130). If it is determined that dimming has not been completed, the process proceeds to step S11.
Return to 2 to reset the timer and restart. If it is determined that dimming has been completed, it is checked whether or not preheating is being performed (step S131). If it is determined that the preheat is not over, step S11
Return to 2 to reset the timer and restart. If it is determined that the preheating has been completed, it is checked whether or not power saving of the image reading apparatus is prohibited (step S132). If it is determined that the power saving is prohibited, the process returns to step S112 to reset and restart the timer. If it is determined that the power saving is not prohibited, the process proceeds to step S121, and it is determined whether or not the image reading apparatus is in a conveyance failure state (step S122), and processing subsequent thereto is performed.

As described above, according to the third embodiment,
If there is no SCSI interrupt for a predetermined time after power-on,
Alternatively, in an image reading apparatus that shifts from the normal mode to one of a plurality of power saving modes when a predetermined time has elapsed since the last SCSI interrupt, changing the power saving mode to shift according to the state of the image reading apparatus. Thereby, more thorough power saving can be achieved.

[0113]

[Other Embodiments] The first to third embodiments may be appropriately combined.

In the first to third embodiments,
Although connected to the external PC 900 by SCSI, the present invention is not limited to this, and it is needless to say that other known standards may be used.

Further, even if the present invention is applied to a system including a plurality of devices (for example, a host computer, an interface device, a scanner, etc.), a device including one device (for example, a copying machine, a facsimile machine, etc.) May be applied.

Further, an object of the present invention is to supply a storage medium (or a recording medium) in which a program code of software for realizing the functions of the above-described embodiments is recorded to a system or an apparatus, and to provide a computer (a computer) of the system or the apparatus. Or a CPU or MPU) reads out and executes the program code stored in the storage medium,
It goes without saying that this is achieved. In this case, the program code itself read from the storage medium implements the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.
In addition, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also based on the instructions of the program code,
The operating system (OS) running on the computer performs part or all of the actual processing,
It goes without saying that a case where the function of the above-described embodiment is realized by the processing is also included. Here, as a storage medium for storing the program code, for example, a floppy (registered trademark) disk, a hard disk, a ROM,
RAM, magnetic tape, nonvolatile memory card, CD-
ROMs, CD-Rs, DVDs, optical disks, magneto-optical disks, MOs, and the like are conceivable.

Further, after the program code read from the storage medium is written into the memory provided in the function expansion card inserted into the computer or the function expansion unit connected to the computer, the program code is read based on the instruction of the program code. , The CPU provided in the function expansion card or the function expansion unit performs a part or all of the actual processing,
It goes without saying that a case where the function of the above-described embodiment is realized by the processing is also included.

When the present invention is applied to the storage medium, the storage medium stores program codes corresponding to any of the flowcharts shown in FIGS. 3 to 10 described above.

[0119]

As described above, according to the present invention, the transition from the normal mode to the power saving mode is restricted according to the state of the image reading apparatus, so that the power consumption of the image reading apparatus is suppressed and the operability is improved. Can be improved.

Further, by shifting to a different power saving mode according to the state of the image reading apparatus, it is possible to further reduce the power consumption while improving the operability of the operator.

[Brief description of the drawings]

FIG. 1 is a control block diagram of an image reading apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of an image reading device according to an embodiment of the present invention.

FIG. 3 is a flowchart illustrating a basic operation of the image reading apparatus according to the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating an example of an operation of the image reading apparatus according to the first embodiment of the present invention.

FIG. 5 is a flowchart illustrating another example of the operation of the image reading apparatus according to the first embodiment of the present invention.

FIG. 6 is a flowchart illustrating another example of the operation of the image reading apparatus according to the first embodiment of the present invention.

FIG. 7 is a flowchart illustrating another example of the operation of the image reading apparatus according to the first embodiment of the present invention.

FIG. 8 is a flowchart illustrating another example of the operation of the image reading apparatus according to the first embodiment of the present invention.

FIG. 9 is a flowchart illustrating an operation of the image reading apparatus according to the second embodiment of the present invention.

FIG. 10 is a flowchart showing an operation in a SLEEP1 mode shown in FIG. 9;

FIG. 11 is a flowchart showing an operation in a SLEEP2 mode shown in FIG. 9;

FIG. 12 is a flowchart showing an operation in a SLEEP3 mode shown in FIG. 9;

FIG. 13 is a flowchart illustrating an operation of the image reading apparatus according to the third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 100 image processing control unit 200 main motor control unit 300 platen motor control unit 400 clutch / sensor control unit 500 device control unit 501 CPU 502 EEPROM 503 flash memory 504 memory 600 switching power supply 700 regulator 800 SCSI controller 900 PC

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (43)

[Claims] An image reading apparatus having a normal mode for supplying electric power required for performing a normal operation and a power saving mode for restricting power supply, based on a predetermined condition set in advance. Switching means for switching between the normal mode and the power saving mode; determining means for determining a state of the image reading apparatus; control means for inhibiting switching by the switching means according to the state determined by the determining means. An image reading apparatus comprising: 2. The image processing apparatus according to claim 1, wherein the determining unit includes a unit configured to determine a conveyance state of the read document in the image reading apparatus.
2. The image reading apparatus according to claim 1, wherein when the determination unit detects a conveyance failure state, the control unit prohibits switching from the normal mode to the power saving mode. 3. 3. A document movement control means for controlling a first state involving movement of the document or a second state without movement of the document, wherein the determination means determines the movement state of the document. 3. The image reading apparatus according to claim 1, further comprising a determination unit, wherein the control unit prohibits switching from the normal mode to the power saving mode in the first state. 4. . 4. A document table on which a document to be read is placed, and the document table is in a first state for supplying the document into the image reading apparatus or a second state for placing the document on the document table. Further comprising a platen control unit for controlling the state of the platen, wherein the determination unit includes a unit for determining a state of the platen, and when the platen is in the first state, the control unit switches from the normal mode. The image reading apparatus according to claim 1, wherein switching to the power saving mode is prohibited. 5. An illumination device for illuminating a document to be read, wherein the determination device includes a device for determining whether or not a residual heat treatment for stabilizing a light amount of the illumination device has been completed. The image reading apparatus according to claim 1, wherein the control unit prohibits switching from the normal mode to the power saving mode when the heat treatment is not completed. 6. An adjustment processing unit for acquiring a set value used at the time of image reading, wherein the determination unit includes a unit for determining whether or not processing is being performed by the adjustment processing unit, and the processing is being performed. 6. The image reading apparatus according to claim 1, wherein the control unit prohibits switching from the normal mode to the power saving mode. 7. The image according to claim 6, further comprising an illuminating unit for illuminating the read document, wherein the adjustment processing unit includes a dimming unit for dimming the illuminating unit. Reader. 8. A receiving unit for receiving a prohibition command for prohibiting switching from the normal mode to the power saving mode, wherein the determination unit determines whether the prohibition command is received from the reception unit. 8. The image reading apparatus according to claim 1, wherein the control unit prohibits switching from the normal mode to the power saving mode when the image reading is received. 9. The image reading apparatus further comprises: a unit for receiving a command for instructing an operation of the image reading apparatus.
9. The image reading apparatus according to claim 1, wherein the switching unit switches from the power saving mode to the normal mode. 10. A state of the image reading apparatus, comprising: a normal mode for supplying power required for performing a normal operation; and a plurality of power saving modes for restricting power supply to at least a part of the apparatus. An image reading unit that switches between the normal mode and the plurality of power saving modes according to a predetermined condition set in advance and a state determined by the determining unit. apparatus. 11. The switching unit switches from the normal mode to a power saving mode corresponding to a state of the image reading apparatus according to a predetermined condition set in advance and a state determined by the determining unit. The image reading device according to claim 10, wherein: 12. The image forming apparatus according to claim 11, wherein the determination unit includes a unit configured to determine a conveyance state of the read document in the image reading apparatus. The image reading apparatus according to claim 10, wherein the power supply mode is switched to a power saving mode in which power is supplied to a configuration necessary for detecting a document in the transport path. 13. A document table on which a document to be read is placed, and the document table is in a first state in which the document is supplied into the image reading apparatus or a second state in which the document is placed on the document table. Further comprising a platen control means for performing control as described above, wherein the determination means includes means for determining a state of the platen, and when the platen is in the first state, the switching means switches from the normal mode. And switching to a power saving mode for restricting power supply to components other than those required to change the state of the platen.
The image reading device according to claim 1. 14. The apparatus according to claim 10, further comprising control means for prohibiting switching by said switching means according to a state determined by said determining means.
3. The image reading device according to any one of 3. 15. An illumination unit for illuminating a read original, wherein the determination unit includes a unit for determining whether or not a residual heat treatment for stabilizing a light amount of the illumination unit has been completed. 15. The image reading apparatus according to claim 14, wherein the control unit prohibits switching from the normal mode to the power saving mode when the heat treatment is not completed. 16. An image processing apparatus further comprising adjustment processing means for acquiring a set value used at the time of reading an image, wherein the determination means includes means for determining whether or not processing is being performed by the adjustment processing means, and the processing is being performed. 2. The method according to claim 1, wherein the control unit prohibits switching from the normal mode to the power saving mode.
6. The image reading device according to any one of 5. 17. The image according to claim 16, further comprising an illuminating unit for illuminating the read document, wherein the adjustment processing unit includes a dimming unit for dimming the illuminating unit. Reader. 18. A receiving apparatus for receiving a prohibition command for prohibiting switching from a normal mode to a power saving mode, wherein the determining means determines whether or not the prohibition command is received from the receiving means. 18. The image reading apparatus according to claim 14, wherein the control unit prohibits switching from the normal mode to the power saving mode when receiving the image. 19. The image processing apparatus further comprising: a unit for receiving a command for instructing an operation of the image reading apparatus, wherein when a command is received in the power saving mode,
19. The apparatus according to claim 10, wherein the switching unit switches from the power saving mode to the normal mode.
The image reading device according to any one of the above. 20. A method for controlling an image reading apparatus having a normal mode for supplying power required for performing a normal operation and a power saving mode in which power supply is regulated, wherein during the normal mode operation, A predetermined condition determining step of determining whether or not a predetermined condition is set; and a state determining step of determining a state of the image reading apparatus when the predetermined condition is determined in the predetermined condition determining step. And a prohibition step of prohibiting switching from the normal mode to the power saving mode according to the state determined in the state determination step. 21. The state determination step includes a step of determining a transport state of a read original in the image reading apparatus. If a transport failure state is detected in the state determination step, the normal mode is performed in the prohibition step. 21. The control method according to claim 20, wherein switching from the power saving mode to the power saving mode is prohibited. 22. The image reading apparatus further includes a document moving unit configured to control to be in a first state involving the movement of the document or a second state not involving the movement of the document. 22. The method according to claim 20, further comprising a step of determining a movement state of the document, wherein the switching from the normal mode to the power saving mode is prohibited in the prohibition step when the document is in the first state. The control method according to the above. 23. The image reading apparatus, comprising: a document table on which a document to be read is placed; and a first state in which the document is placed in the image reading apparatus. A platen control means for controlling to be in a second state, wherein the state determining step includes a step of determining a state of the platen, and when the platen is in the first state, 22. The control method according to claim 20, wherein in the prohibition step, switching from the normal mode to the power saving mode is prohibited. 24. The image reading apparatus further includes an illuminating unit for illuminating the read original, and the state determining step determines whether or not a residual heat treatment for stabilizing a light amount of the illuminating unit has been completed. The method according to any one of claims 20 to 23, further comprising a step of determining, wherein when the residual heat treatment is not completed, the switching to the power saving mode from the normal mode is prohibited in the prohibiting step. Control method. 25. The image reading apparatus further comprises an adjustment processing unit for acquiring a set value used at the time of image reading, and wherein the state determining step determines whether or not the processing is being performed by the adjustment processing unit. And switching from the normal mode to the power saving mode in the prohibiting step when processing is in progress.
25. The control method according to any one of 0 to 24. 26. The image reading apparatus further includes an illuminating unit for illuminating the read original, and in the state determining step, whether the dimming process of the illuminating unit is being performed by the adjustment processing unit is determined. The control method according to claim 25, wherein the determination is performed. 27. The method further comprising: receiving a prohibition command for prohibiting switching from the normal mode to the power saving mode. The state determination step determines whether or not the prohibition command has been received. 27. The control method according to claim 20, wherein in the prohibition step, switching from the normal mode to the power saving mode is prohibited. 28. A step of receiving a command for instructing the operation of the image reading apparatus during the power saving mode operation; and
28. The control method according to claim 20, further comprising a step of switching from the power saving mode to the normal mode. 29. A method for controlling an image reading apparatus, comprising: a normal mode for supplying power required for performing a normal operation, and a plurality of power saving modes in which power supply to at least a part of the apparatus is regulated. A predetermined condition determining step of determining whether or not a predetermined condition is set during the normal mode operation; and, if it is determined in the predetermined condition determining step that the predetermined condition is satisfied, the image reading is performed. A control, comprising: a state determining step of determining a state of the device; and a switching step of switching from the normal mode to any of the plurality of power saving modes according to the state determined in the state determining step. Method. 30. In the switching step, the normal mode is switched to one of the plurality of power saving modes according to a predetermined condition set in advance and a state determined in the determining step. Item 30. The control method according to Item 29. 31. The state determining step includes a step of determining a transport state of the read original in the image reading apparatus. When a transport failure state is detected in the state determination step, the switching step includes the normal state. 31. The control method according to claim 30, wherein the mode is switched from a mode to a power saving mode for restricting power supply to components other than those necessary for detecting a document in the transport path. 32. An image reading apparatus comprising: a document table on which a document to be read is placed; and a first state for supplying the document into the image reading apparatus, or a state in which the document is placed on the document table. A platen control means for controlling the platen to be in a second state, wherein the state determining step includes a step of determining a state of the platen, and when the platen is in the first state, 32. The control method according to claim 30, wherein in the switching step, the normal mode is switched to a power saving mode for restricting power supply to components other than those required to change the state of the document table. . 33. The apparatus according to claim 2, further comprising a prohibition step of prohibiting switching in said switching step according to the state determined in said state determination step.
33. The control method according to any one of 9 to 32. 34. The image reading apparatus further includes an illuminating unit for illuminating the read original, and the state determining step determines whether or not a pre-heating process for stabilizing a light amount of the illuminating unit has been completed. 34. The control method according to claim 33, further comprising a determining step, wherein when the remaining heat treatment is not completed, the switching in the switching step is prohibited in the prohibiting step. 35. The image reading apparatus further includes an adjustment processing unit for acquiring a set value used at the time of image reading, and wherein the state determining step determines whether or not the processing is being performed by the adjustment processing unit. 35. The control method according to claim 29, wherein when the processing is being performed, the switching in the switching step is prohibited in the prohibiting step. 36. The image reading apparatus further includes an illuminating unit for illuminating the read original, and in the state determining step, whether the dimming process of the illuminating unit is being performed by the adjustment processing unit is determined. The control method according to claim 35, wherein the determination is performed. 37. The method further comprising: receiving a prohibition command for prohibiting switching from the normal mode to the power saving mode. The state determination step determines whether or not the prohibition command has been received. 37. The control method according to claim 34, wherein in the prohibiting step, switching from the normal mode to the power saving mode is prohibited. 38. A step of receiving a command for instructing the operation of the image reading apparatus during the power saving mode operation, and when a command is received in the power saving mode,
38. The control method according to claim 29, further comprising a step of switching from the power saving mode to the normal mode. 39. A control device that implements the control method according to claim 20. 40. An information processing apparatus for implementing the control method according to claim 20. 41. A program executable by an information processing device having a program code for realizing the control method according to claim 20. 42. A program which is a program executable by a computer device, wherein the program causes the computer device executing the program to function as the control device according to claim 39. 43. A storage medium storing the program according to claim 41.