JP2011037126A - Power saving control apparatus and power saving control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power saving control apparatus that quickens the start of image formation when releasing a power saving state compared with the case of releasing the power saving state after the image formation is instructed. <P>SOLUTION: The power saving control apparatus 30 includes: a receiving part 46 for receiving information transmitted from an external device via a communication line; a storage part 42 for storing specific information other than image formation instruction information that is received within a predetermined period of time until the receiving part 46 receives the image formation instruction information regarding an instruction of image formation, and a control part 40 which releases a power saving state when a main controller 18 being a target of power saving control is in a power saving state that power consumption is lower than that of in a normal power state that normal power is supplied, and also, when the information received by the receiving part 46 corresponds to the specific information stored in the storage part 42. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a power saving control device and a power saving control program.

  In Patent Document 1, when the information received from the host device is stored in the reception buffer and analyzed in the sleep mode and the received information includes information that should restart the power supply to each part of the printing apparatus main body. A technique for resuming power supply to each part of the printing apparatus main body is disclosed.

  In Patent Document 2, among packets arriving via a network, a packet that matches a predetermined discard condition set in advance is discarded without being selectively received, and the packet is received for a predetermined time. A technique for shifting to a power saving mode when a packet is not received is disclosed.

JP-A-8-324071 JP 2003-191570 A

  The present invention provides a power saving control apparatus and a power saving control program that can accelerate the start of image formation when canceling the power saving state, compared to the case of canceling the power saving state after an image formation instruction is issued. The purpose is to provide.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a receiving means for receiving information transmitted from an external device via a communication line, and the receiving means receives image forming instruction information relating to an image forming instruction. Normal power to which normal power is supplied by a storage unit that stores specific information other than the image formation instruction information and a power saving control target unit that is a target of power saving control, received within a predetermined time until Canceling means for canceling the power saving state when the power saving state is lower in power consumption than the state and the information received by the receiving means corresponds to the specific information stored in the storage means; .

  According to a second aspect of the present invention, the storage unit further stores identification information for identifying a device that is a transmission source of the specific information on the communication line, and the release unit is received by the reception unit. The information corresponding to the specific information stored in the storage means and the identification information of the device that is the transmission source of the information received by the receiving means correspond to the identification information stored in the storage means In such a case, the power saving state is canceled.

  According to a third aspect of the present invention, the storage unit stores the specific information every time the image formation instruction information is received, and the release unit includes a power saving control target unit that is a target of power saving control. It is a power saving state in which power consumption is lower than a normal power state to which power is supplied, and information received by the receiving means is at least a part of the specific information stored in the storage means When corresponding to the specific information, the power saving state is canceled.

  The invention described in claim 4 is a power saving control program for causing a computer to function as each means constituting the power saving control device according to any one of claims 1 to 3.

  According to the first aspect of the present invention, it is possible to accelerate the start of image formation as compared with a case where the power saving state is canceled after an image formation instruction is issued.

  According to the second aspect of the present invention, compared to a case where identification information for identifying a device that is a transmission source of specific information on a communication line is not taken into consideration, image formation is performed for each device that instructs image formation. The effect is that the start can be accelerated.

  According to the third aspect of the present invention, compared with the case where the power saving state is canceled according to the comparison result between the information received by the receiving means and the single specific information stored in the storage means, the power saving It has the effect that the precision of the cancellation | release of a state can be improved.

  According to the fourth aspect of the present invention, it is possible to accelerate the start of image formation as compared with the case where the power saving state is canceled after an image formation instruction is issued.

1 is a schematic configuration diagram of an image forming system. 1 is a schematic configuration diagram of an image forming apparatus. It is a schematic block diagram of a power saving control apparatus. It is a flowchart of the main routine performed with a power saving control apparatus. It is a flowchart of the process in the normal mode performed with the power saving control apparatus which concerns on 1st Embodiment. It is a flowchart of the process in the power saving mode performed with the power saving control apparatus which concerns on 1st Embodiment. It is a flowchart of the process in the normal mode performed with the power saving control apparatus which concerns on 2nd Embodiment. It is a flowchart of the process in the power saving mode performed with the power saving control apparatus which concerns on 2nd Embodiment. It is a flowchart of the process in the normal mode performed with the power saving control apparatus which concerns on 3rd Embodiment. It is a flowchart of the process in the power saving mode performed with the power saving control apparatus which concerns on 3rd Embodiment. It is a schematic block diagram at the time of comprising a power saving control apparatus with a computer.

(First embodiment)
The first embodiment of the present invention will be described below.

  FIG. 1 illustrates a schematic configuration of an image forming system 10 according to the present embodiment. As shown in the figure, the image forming system 10 has a configuration in which an image forming apparatus 12 and a plurality of host computers 14A, 14B... Are connected to each other via a network 16.

  FIG. 2 illustrates a schematic configuration of the image forming apparatus 12. As shown in the figure, the image forming apparatus 12 includes a main controller 18.

  The main controller 18 includes a CPU (Central Processing Unit) 18A, a ROM (Read Only Memory) 18B, a RAM (Random Access Memory) 18C, a non-volatile memory 18D, and an input / output interface (I / O) 18E via a bus 18F. Each is connected.

  The I / O 18E includes an operation display unit 20, an image reading unit 22, an image forming unit 24, a paper supply unit 26, a paper discharge unit 28, a power saving control device 30, a telephone line interface (I / F) 32, a hard disk 34, And each function part, such as the electric power supply part 35, is connected.

  For example, the operation display unit 20 displays various buttons such as a start button for instructing the start of copying, various buttons such as a numeric keypad, a setting screen for setting various image forming conditions such as copy density, and a state of the apparatus. It is configured to include a touch panel and the like.

  The image reading unit 22 includes an image reading sensor such as a line CCD and a scanning mechanism for scanning the image reading sensor, and reads an image of a document set on the apparatus.

  The image forming unit 24 forms an image on a recording medium by, for example, a so-called electrophotographic method. Specifically, the image forming unit 24 is a charging device for charging the photosensitive drum, and the charged photosensitive drum is exposed to light corresponding to the image to expose the static on the photosensitive drum according to the image. An exposure device that forms an electrostatic latent image, a developing device that develops toner with an electrostatic latent image formed on a photosensitive drum, and a transfer device that transfers a toner image corresponding to the image formed on the photosensitive drum to a recording medium The image forming apparatus includes a fixing device that fixes a toner image corresponding to the image transferred to the recording medium.

  Examples of the exposure apparatus include an optical scanning apparatus configured to include an optical system such as a semiconductor laser, a rotating polygon mirror, a collimator lens, a cylindrical lens, and an fθ lens, and an LED head composed of a plurality of LEDs.

  The paper supply unit 26 includes a paper storage unit that stores recording paper, a supply mechanism that supplies recording paper from the paper storage unit to the image forming unit 24, and the like.

  The paper discharge unit 28 includes a discharge unit for discharging the recording paper, a discharge mechanism for discharging the recording paper on which the image is formed by the image forming unit 24 onto the discharge unit, and the like.

  As illustrated in FIG. 3, the power saving control device 30 includes a controller 44 including a control unit 40 and a storage unit 42, and a communication unit 50 including a reception unit 46 and a transmission unit 48.

  As will be described in detail later, the control unit 40 analyzes the packet data from the host computer received by the receiving unit 46 via the network 16, processes according to the analysis result, and outputs the received packet data to the main controller 18. Processing, processing for transmitting response packet data corresponding to the received packet data via the transmission unit 48, and the like are executed. The storage unit 42 stores packet data received by the receiving unit 46.

  In this embodiment, the image forming apparatus 12 is supplied with power to the entire apparatus and can operate normally, and power is supplied only to some functional units, for example, the power saving control device 30, and other functions. A case will be described in which the operation is performed in any one of a power saving mode in which power supply to the unit is cut off to save power.

  The telephone line communication I / F 32 is an interface for performing facsimile communication with other image forming apparatuses connected via a telephone line (not shown).

  The hard disk 34 stores, for example, log data such as the status and operating status of each part of the apparatus, log data of processing results such as copying, facsimile communication, and printing, various setting data, control programs, and the like.

  The power supply unit 35 supplies power to each unit of the image forming apparatus 12 in accordance with instructions from the main controller 18 and the power saving control unit 30.

  Next, as an operation of the present exemplary embodiment, processing executed by the control unit 40 of the power saving control device 30 of the image forming apparatus 12 will be described with reference to a flowchart.

  In the present embodiment, a case where each device connected to the network 16 is compatible with SNMP (Simple Network Management Protocol) will be described. This SNMP is an Internet standard protocol for managing various connected devices on a network that performs network communication using TCP (Transmission Control Protocol) / IP (Internet Protocol). By reading and setting MIB (Management Information Base), which is management information of connected devices, the devices connected to the network 16 are centrally managed. The management information of each device, that is, the object is managed by OID (object identifier).

  For example, if the OID is “1.3.3.6.1.2.1.1.5”, this is sysName, that is, information indicating the name of the device, and the device that has received the packet of the GetRequest request for this OID. Transmits information indicating the name of the self-confidence device to the device that has transmitted the GetRequest request.

  For example, if the OID is “1.3.3.6.1.2.1.1”, this is sysDescr, that is, information relating to the description of the device, and the device that has received the packet of the GetRequest request for this OID. Transmits information related to the description of the self-confidence device to the device that has transmitted the GetRequest request.

  For example, if the OID is “1.3.3.6.1.2.1.25.3.5.1.1”, this is hrPrinterStatus, that is, information on the state of the device (printer), and this OID. The device that has received the GetRequest request packet transmits information regarding the state of the device that it is confident to the source device of the GetRequest request.

  As described above, when each device connected to the network 16 is SNMP-compatible and the image forming apparatus 12 receives print data transmitted from the host computer and performs print processing, the GetRequest request for the above-described OID is performed before that. In addition, a GetNextRequest request, which is a request for reading consecutive values of OIDs requested by GetRequest, is often transmitted from the host computer to the image forming apparatus 12.

  For this reason, in the present embodiment, when print data (an example of image formation instruction information) is received, first of the GetRequest request and GetNextRequest request received within a predetermined time retroactive from the time when the print data is received. The OID (an example of specific information) included in the received GetRequest request or GetNextRequest request and the IP address of the transmission source device are stored, and the GetRequest request or GetNextRequest request is received and included in the power saving mode. If the OID to be received matches the OID received and stored in the past and the source IP address (an example of identification information) also matches, the print data is likely to be received soon. Cancel power saving mode before receiving print data .

  FIG. 4 shows a flowchart of a main routine executed by the control unit 40 of the power saving control device 30. This process is executed when the image forming apparatus 12 is turned on.

  As shown in FIG. 4, in step 100, processing in the normal mode as shown in FIG. 5 is executed.

  As shown in FIG. 5, in step 200, it is determined whether or not the receiving unit 46 has received packet data transmitted from the host computer via the network 16. If not, the process proceeds to step 210.

  In step 202, the received packet data is stored in the storage unit 42.

  In step 204, it is determined whether or not the received packet data is print data. If it is print data, the process proceeds to step 206. If it is not print data, the process proceeds to step 208.

  In step 206, the GetRequest request packet and the GetNextRequest request packet received within a predetermined time traced from the time when the print data is received are extracted from the received packets stored in the storage unit 42. The OID included in the received request packet is associated with the IP address of the packet data transmission source and stored in the storage unit 42 as history information.

  When the next print data is received, the history information may be overwritten or additionally stored. When the information is additionally stored, for example, the latest history information for a predetermined number of times may be stored and deleted from the old history information.

  In this embodiment, the case where the OID included in the first received request packet is stored has been described. However, the present invention is not limited to this, and the GetRequest request packet and GetNextRequest received within a predetermined time before receiving the print data. A part or all of the OID included in the request packet may be stored in association with the IP address of the packet data transmission source. In this embodiment, the case where the IP address of the transmission source is stored has been described. However, the present invention is not limited to this, and any identification information for identifying the transmission source device on the network 16 may be used as the IP address. For example, other identification information such as a MAC address may be used.

  In step 208, the received packet data is output to the main controller 18. As a result, the main controller 18 executes processing corresponding to the received packet data.

  In step 210, it is determined whether or not the mode has been shifted to the power saving mode. When the mode is shifted to the power saving mode, this routine is terminated. Repeat the same process.

  In the present embodiment, whether or not the mode has shifted to the power saving mode is determined based on, for example, whether or not the main controller 18 has notified the power saving control unit 30 that the mode has shifted to the power saving mode. The main controller 18 supplies power so as to stop power supply to the main controller 18 in order to shift from the normal mode to the power saving mode, for example, when there is no operation or operation instruction for the image forming apparatus 12 for a predetermined time or more. Notifying the unit 35 and notifying the power saving control unit 30 of the shift to the power saving mode. Thereby, the power supply unit 35 stops the power supply to the main controller 18.

  In step 102 of FIG. 4, processing in the power saving mode as shown in FIG. 6 is executed.

  In step 300 shown in FIG. 6, it is determined whether the receiving unit 46 has received packet data from the host computer via the network 16. If received, the process proceeds to step 302. Wait until packet data is received.

  In step 302, the power saving control unit 30 determines whether the packet is a proxy response capable packet. If the packet is a proxy response capable packet, the process proceeds to step 304 and a response packet is transmitted. Then, the process proceeds to step 306. The determination as to whether or not the packet is a proxy response is made, for example, by preliminarily storing table data that defines a correspondence relationship between a predetermined proxy response packet and the response packet in the storage unit 42. This is done by referring to the data. If the received packet is a packet capable of proxy response registered in the table data, a response packet corresponding to the packet may be transmitted via the transmission unit 48.

  The proxy response possible packet includes, for example, an ARP (Address Resolution Protocol) resolution request packet, that is, a packet requesting to transmit a MAC address corresponding to an IP address, but is not limited thereto. .

  In step 306, the packet data is analyzed, and it is determined whether or not the IP address of the transmission source of the packet data matches, for example, the IP address of the latest history information stored in the storage unit 42. If there is an IP address, the process proceeds to step 308. If there is no matching IP address, the process proceeds to step 312. In Step 308, it is determined whether the received packet data is a GetRequest request or a GetNextRequest request. If the received packet data is a GetRequest request or a GetNextRequest request, the process proceeds to Step 310; Control goes to step 314.

  In step 310, referring to the history information, it is determined whether or not the target OID of the GetNextRequest request or GetNextRequest request matches the OID corresponding to the IP address determined to match in step 306. The process proceeds to step 312, and if they do not match, the process proceeds to step 314.

  In step 312, for example, the power supply unit 35 is instructed to cancel the power saving mode of the main controller 18 and supply power to the main controller 18. As a result, power is supplied from the power supply unit 35 to the main controller 18, and the main controller 18 operates. On the other hand, in step 314, the received packet is discarded.

  As described above, when the packet received during the power saving mode is a GetRequest request or a GetNextRequest request, the OID specified in the request and the IP address of the transmission source are the OID and transmission of the history information stored in the storage unit 42. If it matches the original IP address, it is assumed that print data will be received thereafter, and the power saving mode is canceled before the print data is received.

  In the present embodiment, a case has been described in which the power saving mode is canceled when the information received during the power saving mode matches the latest history information stored in the storage unit 42. When history information for a plurality of times is stored, the power saving mode is canceled when any of the history information for the plurality of times matches information received during the power saving mode. May be.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the same part as 1st Embodiment, and detailed description is abbreviate | omitted.

  Since the image forming system 10 according to the present embodiment is the same as that of the first embodiment, description thereof is omitted.

  Next, as an operation of the present exemplary embodiment, processing executed by the control unit 40 of the power saving control device 30 of the image forming apparatus 12 will be described with reference to a flowchart.

  In the present embodiment, a case will be described in which each device connected to the network 16 is SNMP-compatible as in the first embodiment. When each device connected to the network 16 is SNMP-compatible and the image forming apparatus 12 receives print data transmitted from the host computer and performs print processing, for example, when performing data communication by TCP, the print data communication Usually, a connection request is made by specifying a port number (for example, 9100). For this reason, in the present embodiment, when print data is received, the port number (an example of specific information) specified in the TCP connection request received within a predetermined time traced from the time when the print data was received, and the transmission If the IP address of the original device is stored, a TCP connection request is received during the power saving mode, and the source IP address matches, there is a high possibility that print data will be received soon The power saving mode is canceled before the print data is received.

  The flowchart of the main routine executed by the control unit 40 of the power saving control device 30 is the same as that in FIG.

  In the present embodiment, in step 100 shown in FIG. 4, processing in the normal mode as shown in FIG. 7 is executed. For steps that perform processing different from the processing shown in FIG. Further, steps that perform the same processing as the processing shown in FIG. 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, the process of step 206A is different from the process shown in FIG. In step 206A, the port number specified in the TCP connection request received within a predetermined time before receiving the print data and the IP address of the packet data transmission source are associated and stored in the storage unit 42 as history information. .

  Next, processing in the power saving mode executed in step 102 in FIG. 4 will be described. In the present embodiment, processing in the power saving mode as shown in FIG. 8 is executed. For steps that perform processing different from the processing shown in FIG. Moreover, the same code | symbol is attached | subjected about the step which performs the process same as the process shown in FIG. 6, and detailed description is abbreviate | omitted.

  The processing shown in FIG. 8 differs from the processing shown in FIG. 6 in the processing in steps 308A to 312A.

  Step 308A determines whether or not the received packet data is a TCP connection request. If the received packet data is a TCP connection request, the process proceeds to step 310A, and if not, the process proceeds to step 314. To do.

  In step 310A, the history information is referenced to determine whether the port number requested for TCP connection matches the port number corresponding to the IP address determined to match in step 306. The process proceeds to step 312A, and if they do not match, the process proceeds to step 314.

  In step 312A, for example, the power supply unit 35 is instructed to cancel the power saving mode of the main controller 18 and the image forming unit 24 and supply power to the main controller 18. As a result, power is supplied from the power supply unit 35 to the main controller 18, and the main controller 18 operates. On the other hand, in step 314, the received packet is discarded.

  As described above, when the packet received during the power saving mode is a TCP connection request, the port number specified in the request and the IP address of the transmission source device of the TCP connection request are stored in the storage unit 42. If the information matches the port number of the information and the IP address associated with the port number, then the print data is received and the power saving mode is canceled before the print data is received. In the present embodiment, the case of performing data communication by TCP has been described. However, the present invention is not limited to this, and the same processing is performed when performing data communication by UDP (User Datagram Protocol).

(Third embodiment)
Next, a third embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the same part as 1st Embodiment, and detailed description is abbreviate | omitted.

  Since the image forming system 10 according to the present embodiment is the same as that of the first embodiment, description thereof is omitted.

  Next, as an operation of the present exemplary embodiment, processing executed by the control unit 40 of the power saving control device 30 of the image forming apparatus 12 will be described with reference to a flowchart.

  In the present embodiment, a case will be described in which each device connected to the network 16 is compatible with IPP (Internet Printing Protocol) and uses IPP when transmitting and receiving print data. When each device connected to the network 16 is compatible with IPP, and the image forming apparatus 12 receives print data transmitted from the host computer and performs print processing, before that, for example, printing is performed by a GetPrinterAttrs command or the like in IPP. In many cases, the host computer requests various attribute information of the device to be performed.

  For example, in the GetPrinterAttrs instruction, “media-ready” (a character string for identifying the type of information), “printer-resolution-supported” (information on resolution supported by the printer), “sides-supported” (both sides) Attribute information such as information indicating whether printing is supported is requested.

  For this reason, in the present embodiment, when print data is received, the type of attribute information requested by the first received GetPrinterAttrs command among the GetPrinterAttrs commands received within a predetermined time traced back from when the print data was received. (An example of specific information) and the IP address of the device that is the source of the GetPrinterAttrs command are stored, the type of attribute information requested by the GetPrinterAttrs command received first during the power saving mode, and the IP of the source If the address matches the stored information, the power saving mode is canceled before the print data is received, assuming that the print data is likely to be received soon.

  Next, processing executed by the control unit 40 of the power saving control device 30 will be described with reference to a flowchart.

  The flowchart of the main routine executed by the control unit 40 of the power saving control device 30 is the same as that in FIG.

  In the present embodiment, in step 100 shown in FIG. 4, processing in the normal mode as shown in FIG. 9 is executed. For steps that perform processing different from the processing shown in FIG. Further, steps that perform the same processing as the processing shown in FIG. 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 9, the process of step 206B is different from the process shown in FIG. In step 206B, the type of attribute information requested by the first received GetPrinterAttrs command among the GetPrinterAttrs commands received within a predetermined time before receiving the print data is associated with the IP address of the transmission source of the GetPrinterAttrs command. Stored in the storage unit 42 as history information.

  Next, processing in the power saving mode executed in step 102 in FIG. 4 will be described. In the present embodiment, processing in the power saving mode as shown in FIG. 10 is executed. In addition, about the step which performs the process different from the process shown in FIG. Moreover, the same code | symbol is attached | subjected about the step which performs the process same as the process shown in FIG. 6, and detailed description is abbreviate | omitted.

  The processing shown in FIG. 10 differs from the processing shown in FIG. 6 in the processing of steps 310B, 312B, 316, and 318.

  In step 310B, referring to the history information, whether the received packet data is a GetPrinterAttrs command and the type of the requested attribute information matches the type of attribute information corresponding to the IP address determined to match in step 306 If they do match, the process proceeds to step 312B. If they do not match, the process proceeds to step 314.

  In step 312B, the power supply unit 35 is instructed to cancel the power saving mode of the main controller 18 and supply power to the main controller 18. As a result, power is supplied from the power supply unit 35 to the main controller 18, and the main controller 18 operates.

  In step 316, it is determined whether or not print data has been received. If it has not been received, the process waits until it is received. If it has been received, the process proceeds to step 318.

  In step 318, the power supply unit 35 is instructed to cancel the power saving mode of the image forming unit 24 and supply power to the image forming unit 24. As a result, power is supplied from the power supply unit 35 to the image forming unit 24, and the image forming unit 24 operates.

  As described above, when the packet received during the power saving mode is a GetPrinterAttrs command, the type of attribute information requested by the command and the IP address of the transmission source device of the GetPrinterAttrs command are stored in the storage unit 42. If it matches the type of attribute information of the information and the IP address associated with this type of attribute information, then the print data is received and the power saving mode is canceled before the print data is received.

  In each of the above-described embodiments, the case where the IP address of the transmission source device of various requests is stored as history information has been described. However, when it is not necessary to manage the history information for each transmission source device, There is no need to store the IP address. Therefore, in this case, the process for determining whether or not the IP addresses match is omitted.

  The controller 44 of the power saving control device 30 may be configured as a computer 80 as shown in FIG. A computer 80 shown in FIG. 11 includes a CPU (Central Processing Unit) 80A, a ROM (Read Only Memory) 80B, a RAM (Random Access Memory) 80C, a non-volatile memory 80D, and an input / output interface (I / O) 80E. The communication unit 50 is connected to the I / O 80E. In this case, a program for causing the computer 80 to execute the processes shown in FIGS. 4 to 10 is written in, for example, the nonvolatile memory 80D, and the CPU 80A reads and executes the program. Thereby, the computer 80 functions as the power saving control device 30. The program may be provided by a recording medium such as a CD-ROM.

  Further, the configuration of the power saving control device 30 described in the present embodiment (see FIG. 3) is an example, and unnecessary portions are deleted or new portions are added within a range not departing from the gist of the present invention. Needless to say.

  The processing flow of the control program described in the present embodiment (see FIGS. 4 to 10) is also an example, and unnecessary steps can be deleted or new steps can be added without departing from the scope of the present invention. Needless to say, they may be added or the processing order may be changed.

DESCRIPTION OF SYMBOLS 10 Image forming system 12 Image forming apparatus 14A, 14B Host computer 16 Network 12 Image forming apparatus 18 Main controller 20 Operation display part 22 Image reading part 24 Image forming part 26 Paper supply part 28 Paper discharge part 30 Power saving control apparatus 32 Telephone line Communication I / F
34 hard disk 35 power supply unit 40 control unit (an example of release means)
42 storage unit (an example of storage means)
44 controller 46 receiving unit (an example of receiving means)
48 Transmitter 50 Communication Unit

Claims (4)

Receiving means for receiving information transmitted from an external device via a communication line;
Storage means for storing specific information other than the image formation instruction information received within a predetermined time until the reception means receives image formation instruction information related to an image formation instruction;
The power-saving control target unit that is the target of power-saving control is in a power-saving state that consumes less power than the normal power state in which normal power is supplied, and information received by the receiving unit is stored in the storage unit When corresponding to the stored specific information, release means for canceling the power saving state,
A power-saving control device. The storage means further stores identification information for identifying a device that is a transmission source of the specific information on the communication line,
The release means corresponds to the information received by the receiving means corresponding to the specific information stored in the storage means, and the identification information of the device that is the transmission source of the information received by the receiving means is the information The power saving control device according to claim 1, wherein the power saving state is canceled when corresponding to the identification information stored in the storage unit. The storage means stores the specific information every time the image formation instruction information is received,
The canceling unit is an information received by the receiving unit, in which the power saving control target unit that is a target of the power saving control is in a power saving state in which the power consumption is lower than the normal power state in which the normal power is supplied. 3. The power saving control device according to claim 1, wherein the power saving state is canceled when corresponding to at least a part of the specific information among the plurality of specific information stored in the storage unit.   The power saving control program for functioning a computer as each means which comprises the power saving control apparatus of any one of Claims 1-3.

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