JP2006150801A - Image forming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To curb wasteful power consumption by preventing unnecessary devices from returning from a sleep. <P>SOLUTION: The image forming device is structured so as to prevent devices not required from returning from a sleep by distinguishing the kind of a job causing the return of an MFP from a sleep. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  An MFP that can print PDL data received via a network and control power.

  When the MFP recovers from the low power consumption state, it returns even devices that are not necessary for the job that caused the recovery.

As another conventional example, Patent Literature 1 and Patent Literature 2 can be cited.
JP 2002-359704 A JP 2002-300369 A

  The problem with the prior art is that unnecessary power was consumed because unnecessary devices were restored to the job that caused the restoration.

  In the present invention, an unnecessary device can be prevented from returning from sleep by determining the type of job that has caused the MFP to return from the sleep state.

  According to the first embodiment, when PDL data that does not need to be processed by the external RIP device at the time of sleep is received, the external RIP device is not restored from sleep, and only the devices necessary for processing are restored from sleep. Power consumption during operation of the image forming apparatus can be reduced.

  According to the second embodiment, when returning from sleep by operating the operation panel during sleep, image formation is performed by returning only the devices necessary for processing from sleep without returning the external RIP device from sleep. Power consumption during operation of the apparatus can be reduced.

(Example 1)
FIG. 1 shows a network system configured according to this embodiment.

  200 in the figure is an Internet communication network. A web server 201 is connected to the Internet 200 and provides a specific service to Internet users. Reference numeral 202 denotes an electronic money server that performs a settlement process between a financial institution and a consumer client. Reference numeral 204 denotes a service provider that performs connection processing between a personal user terminal and the Internet 200. A firewall 203 connects the inside of the LAN 2011 shown below and an external communication network (Internet 200), and performs security management and the like. Reference numeral 210 denotes the device management servers 211 to 214 and 220 connected via the LAN 2011. Reference numeral 211 denotes a file server, which allows a plurality of users connected via a LAN to share data.

  An image forming apparatus 220 such as a digital copying machine mainly has an image input / output function. In this image forming apparatus 220, 140 is an operation unit for a user to perform various operations, 10 is an image scanner for reading an image in accordance with instructions from the operation unit 140 and the personal computers 212 and 213, and 20 is a personal computer 212 and 213. Or a printer that prints data from the file server 211 on paper.

  A controller unit 30 controls input / output of image data to the scanner 10 and the printer 20 based on instructions from the operation unit 140 and the personal computers 212 and 213. For example, control is performed such that image data captured by the scanner 10 is stored in a memory inside the controller, output to the personal computers 212 and 213, or printed by the printer 20. A printer 214 can print image data from the personal computers 212 and 213 and the file server 211 on a recording medium. 212 and 213 are personal computers connected as terminal devices. Information provided from the web server 201 can be browsed via the Internet 200, and image data can be output to the image forming apparatus 220 and the printer 214.

  In the above configuration, the LAN 2011 is connected to the Internet through the firewall 203, but a configuration in which a firewall is connected through the service provider 204 may be used.

  The appearance of the image processing apparatus of the present invention is shown in FIG.

  The scanner unit 10 as an image input device irradiates a document image with a lamp, reads it with a CCD line sensor (not shown), and converts it into an electrical signal to process it as image data. The original paper is set on the original feeder 142, and when the apparatus user gives a reading start instruction from the operation unit 140, the feeder 2072 feeds the original paper one by one and performs an original image reading operation.

  The printer unit 20, which is an image output device, is a part that converts image data into an image on paper. In the specification of the present invention, the electrophotographic method using a photosensitive drum or a photosensitive belt is described. An ink jet system that prints an image directly on a sheet by ejecting ink from a minute nozzle array may be used. The activation of the printing operation is started by an instruction from a controller (described later) inside the apparatus. The printer unit 20 has a plurality of paper feed stages so that different paper sizes or different paper orientations can be selected, and has paper cassettes 2101, 2102, 2103, 2104 corresponding thereto. Further, the paper on which the image is formed is discharged onto the paper discharge tray 132.

  FIG. 3 is a cross-sectional view illustrating the configuration of the image forming apparatus of the present invention. Details of the operation will be described with reference to the drawings.

  Reference numeral 101 denotes an original platen glass, on which originals fed from the automatic document feeder 142 are sequentially placed at predetermined positions. Reference numeral 102 denotes a document illumination lamp composed of, for example, a halogen lamp, which exposes a document placed on the document table glass 101. Scanning mirrors 103, 104, and 105 are accommodated in an optical scanning unit (not shown) and guide reflected light from the document to the CCD unit 106 while reciprocating. The CCD unit 106 includes an imaging lens 107 that forms an image of reflected light from an original on the CCD, for example, an image sensor 108 composed of a CCD, a CCD driver 109 that drives the image sensor 108, and the like. An image signal output from the image sensor 108 is converted into, for example, 8-bit digital data and then input to the controller unit 139. Reference numeral 110 denotes a photosensitive drum, which is discharged by a pre-exposure lamp 112 in preparation for image formation. A primary charger 113 uniformly charges the photosensitive drum 110. 117 is an exposure means, which is composed of, for example, a semiconductor laser and exposes the photosensitive drum 110 based on image data processed by the controller unit 139 that controls image formation and the entire apparatus to form an electrostatic latent image. . Reference numeral 118 denotes a developing device that contains a black developer (toner). A pre-transfer charger 119 applies a high voltage before transferring the toner image developed on the photosensitive drum 110 onto a sheet. 120, 122, 124, 142, and 144 are paper feed units (120 is a manual paper feed unit), and the transfer paper is fed into the apparatus by driving the paper feed rollers 121, 123, 125, 143, and 145. Then, the operation is temporarily stopped at the position where the registration roller 126 is disposed, and the writing timing with the image formed on the photosensitive drum 110 is taken and the paper is fed again. A transfer charger 127 transfers the toner image developed on the photosensitive drum 110 to a transfer sheet to be fed. Reference numeral 128 denotes a separation charger that separates the transfer sheet on which the transfer operation has been completed from the photosensitive drum 110. The toner remaining on the photosensitive drum 110 without being transferred is collected by the cleaner 111. Reference numeral 129 denotes a conveyance belt which conveys the transfer sheet on which the transfer process has been completed to the fixing device 130 and is fixed by heat, for example. 131 is a flapper that controls the transfer path of the transfer paper after the fixing process to one of the arrangement directions of the sorter 132 and the intermediate tray 137. Reference numerals 133 to 136 denote feeding rollers, which feed the transfer paper once the fixing process is completed to the intermediate tray 137 while being reversed (multiple) or non-reversed (both sides). Reference numeral 138 denotes a refeed roller, which again conveys the transfer paper placed on the intermediate tray 137 to the position where the registration roller 126 is disposed.

  The controller unit 139 includes a microcomputer, an image processing unit, and the like, which will be described later, and performs the above-described image forming operation in accordance with instructions from the man-machine interface device 140.

  The configuration of the operation unit 140 is shown in FIG. The LCD display unit 1032 has a touch panel sheet affixed on the LCD, displays a system operation screen, and transmits position information to the controller unit 30 when a displayed key is pressed. This will be described later with reference to FIG. The numeric keypad 1028 is used to enter numbers such as the number of copies. A start key 1029 is used when starting a document image reading operation. A stop key 1030 is used to stop an operation in progress. A reset key 1031 is used when initializing settings from the operation unit.

  Reference numeral 1023 denotes a guide key. When the key is not understood, an explanation of the key is displayed. 1024 is a copy mode key which is pressed when copying. Reference numeral 1025 denotes a fax key, which is pressed to make settings related to fax. 1026 is a file key which is pressed when outputting file data. Reference numeral 1027 denotes a printer key, which is used to make settings relating to print output from an external device such as a computer.

  Reference numeral 1031 denotes a voice guide key. When performing voice guidance, the key can be pressed to make a setting, and when setting is turned off, the setting can be canceled by pressing again.

  A speaker 501 outputs a voice guide through the speaker. 502 is a handset that can be used to input voice and listen to voice guides.

  FIG. 5 is a basic screen displayed on the LCD display unit of the operation unit 140.

  Reference numeral 1001 denotes an extended function key. When this key is pressed, a mode such as double-sided copying, multiple copying, movement, binding margin setting, and frame erasing setting is entered. An image mode key 1002 enters a setting mode for shading, shadowing, trimming, and masking a copy image. Reference numeral 1003 denotes a user mode key, which can register a mode memory and set a standard mode screen for each user. Reference numeral 1004 denotes an applied zoom key, which enters a mode for independently scaling the X and Y directions of a document, and a zoom program mode for calculating a scaling factor from the document size and copy size. Reference numerals 1005, 1006, and 1007 denote an M1 key, an M2 key, and an M3 key, which are pressed when calling each mode memory. Reference numeral 1008 denotes a call key, which is pressed to call the copy mode that was previously set. An option key 1009 sets an optional function such as a film projector for copying directly from the film. Reference numeral 1010 denotes a sorter key for setting modes such as sort output and group output. Reference numeral 1011 denotes a mixed document key, which is pressed when setting A4 size and A3 size or B5 size and B4 size documents together in the document feeder. 1012 is an equal magnification key, which is pressed to set the copy magnification to 100%. Reference numerals 1014 and 1015 denote a reduction key and an enlargement key, respectively, which are pressed to reduce or enlarge the standard size. Reference numeral 1016 denotes a zoom key, which is pressed when performing non-standard reduction or enlargement in increments of 1%. A paper selection key 1013 is pressed when selecting a copy paper. 1018 and 1020 are density keys, and each time 1018 is pressed, a dark copy is made, and every time 1020 is pressed, a light copy is made. 1017 is a density display, and when the density key is pressed, the display changes to the left and right. Reference numeral 1019 denotes an AE key, which is pressed when a document having a dark background such as a newspaper is copied for automatic density adjustment. Reference numeral 1021 denotes a HiFi key, which is pressed when copying an original having a high halftone density such as a photographic original. Reference numeral 1022 denotes a character emphasis key which is pressed when it is desired to make a character stand out when copying a character document.

  FIG. 6 is a block diagram showing the configuration of the scanner 10 and the printer 20 in the image forming apparatus.

  751 is a CPU that controls the entire scanner 10, and sequentially reads and executes a program from a read-only memory 753 (ROM) that stores a control program. The CPU address bus and data bus are connected to each load via a circuit comprising a bus driver and an address decoder 752. In addition, it is connected to the CPU of the controller unit 30 for communication.

  Reference numeral 754 denotes a random access memory (RAM) as a main storage device used for storing input data, a working storage area, and the like. 755 is an I / O interface. Each load of a device such as a motor 756, a lamp 757, and a paper detection sensor 758 for detecting the transported paper is driven. Connected to.

  The image data read by the CCD unit 106 is transferred to the controller 30.

  Next, a CPU 701 controls the printer 20, and sequentially reads and executes a program from a read-only memory 703 (ROM) that stores a control procedure (control program). The address bus and data bus of the CPU 701 are connected to each load through the bus driver circuit and address decoder circuit of 702. Reference numeral 704 denotes a random access memory (RAM) which is a main storage device used for storing input data, a working storage area, and the like. Reference numeral 705 denotes an I / O interface, and motors 707, clutches 708, solenoids 709 for driving a paper feed system, a transport system, and an optical system, and paper detection sensors 710 for detecting the transported paper. Connected to each load of the device. The developing device 118 is provided with a toner residual detection sensor 711 for detecting the amount of toner in the developing device, and its output signal is input to the I / O port 705. Reference numeral 715 denotes a high voltage unit which outputs a high voltage to the above-described primary charger 113, developing device 118, pre-transfer charger 119, transfer charger 127, and separation charger 128 in accordance with instructions from the CPU 701.

  The image signal output from the CCD unit 106 is subjected to image processing, which will be described later, by the controller unit 30 and outputs control signals for 117 laser units according to the image data. The laser light output from the laser unit 117 irradiates and exposes the photosensitive drum 110, and the light emission state is detected by the beam detection sensor 713 which is a light receiving sensor in the non-image region, and the output signal is output to the I / O port. It is input to 705.

  A block diagram of the controller unit is shown in FIG. The controller unit 30 is connected to the scanner 10 as an image input device and the printer 20 as an image output device. On the other hand, the controller unit 30 is connected to a LAN 2011 or a public line (WAN) 2051 to input / output image information and device information. It is a controller. The CPU 2001 is a controller that controls the entire system. A RAM 2002 is a system work memory for operating the CPU 2002, and is also an image memory for temporarily storing image data. ROM 2003 is a boot ROM, which stores a system boot program. The HDD 2004 is a hard disk drive that stores system software, image data, software counter values, and the like. An operation unit I / F 2006 is an interface unit with the operation unit (UI) 140 and outputs image data to be displayed on the operation unit 140 to the operation unit 140. Also, it plays a role of transmitting information input from the operation unit 140 by the system user to the CPU 2001. NETWORK2010 connects to LAN2011 and inputs / outputs information. The MODEM 2050 is connected to the public line 2051 and inputs / outputs information. The voice input / output unit 500 performs control for outputting voice to the speaker, outputting voice to the handset, and inputting voice. The time measurement unit 2200 uses a real-time clock or the like, and measures time as a calendar. The scanner / printer communication I / F is an I / F for communicating with the CPUs of the scanner 10 and the printer 20. The above devices are arranged on the system bus 2007.

  IMAGE BUS I / F2005 is a bus bridge that connects a system bus 2007 and an image bus 2008 that transfers image data at high speed, and converts the data structure. The image bus 2008 is configured by a PCI bus or IEEE1394. The following devices are arranged on the image bus 2008. A raster image processor (RIP) 2060 expands the PDL code into a bitmap image. The device I / F unit 2020 connects the scanner 10, the printer 20, and the external RIP device 40, which are image input / output devices, to the controller 30, and performs synchronous / asynchronous conversion of image data. A scanner image processing unit 2080 corrects, processes, and edits input image data. The printer image processing unit performs printer correction, resolution conversion, and the like on the print output image data. The image rotation unit 2030 rotates image data. The image compression unit 2040 performs compression / expansion processing of JPEG for multi-valued image data and JBIG, MMR, and MH for binary image data.

  Hereinafter, each block in the controller unit 30 shown in FIG. 7 will be described.

  FIG. 8 shows the configuration of the scanner image processing unit 2080. The image bus I / F controller 2081 is connected to the image bus 2008, and controls the bus access sequence and generates control and timing of each device in the scanner image processing unit 2080. The filter processing unit 2082 performs a convolution operation with a spatial filter. For example, the editing unit 2083 recognizes a closed region surrounded by a marker pen from the input image data, and performs image processing such as shading, shading, and negative / positive inversion on the image data in the closed region. A scaling processing unit 2084 performs enlargement and reduction by performing an interpolation operation in the main scanning direction of the raster image when changing the resolution of the read image. The scaling in the sub-scanning direction is performed by changing the scanning speed of an image reading line sensor (not shown). The table 2085 is table conversion performed to convert image data that is read luminance data into density data. A binarization 2086 binarizes multi-value grayscale image data by error diffusion processing or screen processing.

  The processed image data is transferred to the image bus via the image bus controller 2081 again.

  The configuration of the printer image processing unit 2090 is shown in FIG. The image bus I / F controller 2091 is connected to the image bus 2008, and controls the bus access sequence, and generates control and timing of each device in the scanner image processing unit 2090. A resolution conversion unit 2092 performs resolution conversion for converting image data from NETWORK 2011 or the public line 2051 into the resolution of the printer 20. The smoothing processing unit 2093 performs processing to smooth out jaggies (roughness of an image appearing in a black and white boundary portion such as an oblique line) of image data after resolution conversion.

  The configuration of the image compression unit 2040 is shown in FIG. The image bus I./F controller 2041 is connected to the image bus 2008 to control the bus access sequence, timing control for exchanging data with the input buffer 2042 and the output buffer 2045, and an image compression unit 2043 Control the mode setting for. The processing procedure of the image compression processing unit is shown below.

  Settings for image compression control are performed from the CPU 2001 to the image bus I / F controller 2041 via the image bus 2008. With this setting, the image bus I / F controller 2041 performs settings necessary for image compression (for example, MMR compression and JBIG expansion) for the image compression unit 2043. After making the necessary settings, the CPU 2001 again permits image data transfer to the image bus I / F controller 2041. In accordance with this permission, the image bus I / F controller 2041 starts transferring image data from each device on the RAM 2002 or the image bus 2008. The received image data is temporarily stored in the input buffer 2042, and the image is transferred at a constant speed in response to an image data request from the image compression unit 2043. At this time, the input buffer determines whether image data can be transferred between both the image bus I / F controller 2041 and the image compression unit 2043, reads the image data from the image bus 2008, and reads the image compression unit 2043. When it is impossible to write an image to the image, control is performed so as not to transfer data (hereinafter, such control is referred to as handshaking). The image compression unit 2043 temporarily stores the received image data in the RAM 2044. This is because several lines of data are required depending on the type of image compression processing to be performed, and several lines of image data are prepared in order to compress the first one line. This is because the image cannot be compressed unless it is empty. The image data subjected to the image compression is immediately sent to the output buffer 2045. The output buffer 2045 performs handshaking with the image bus I / F controller 2041 and the image compression unit 2043 and transfers image data to the image bus I / F controller 2041. The image bus I / F controller 2041 transfers the transferred compressed (or expanded) image data to each device on the RAM 2002 or the image bus 2008. This series of processing is repeated until there is no processing request from the CPU 2001 (when the required number of pages has been processed), or until a stop request is issued from this image compression unit (when an error occurs during compression or decompression). It is.

  The configuration of the image rotation unit 2030 is shown in FIG. The image bus I / F controller 2031 is connected to the image bus 2008 to control the bus sequence, control to set a mode or the like in the image rotation unit 2032, and timing to transfer image data to the image rotation unit 2032 Take control. The processing procedure of the image rotation unit is shown below.

  Settings for image rotation control are performed from the CPU 2001 to the image bus I / F controller 2031 via the image bus 2008. With this setting, the image bus I / F controller 2041 performs settings necessary for image rotation (for example, image size, rotation direction, angle, and the like) for the image rotation unit 2032. After making the necessary settings, the CPU 2001 again permits image data transfer to the image bus I / F controller 2041. In accordance with this permission, the image bus I / F controller 2031 starts transfer of image data from each device on the RAM 2002 or the image bus 2008. It should be noted that here, the image size to be rotated is 32 × 32 (BIT) with 32 BIT as the size, and when transferring image data on the image bus 2008, image transfer is performed in units of 32 BIT ( The image to be handled is assumed to be binary).

As described above, in order to obtain a 32 × 32 (BIT) image, it is necessary to transfer the unit data described above 32 times, and it is necessary to transfer image data from discontinuous addresses. (See Figure 12)
The image data transferred by the discontinuous addressing is written in the RAM 2033 so that it is rotated at a desired angle at the time of reading. For example, if the rotation is 90 degrees counterclockwise, the 32 BIT image data transferred first is written in the Y direction as shown in FIG. By reading in the X direction at the time of reading, the image is rotated.

  After the 32 × 32 (BIT) image rotation (writing to the RAM 2033) is completed, the image rotation unit 2032 reads the image data from the RAM 2033 by the above-described reading method, and transfers the image to the image bus I / F controller 2031.

  The image bus I / F controller 2031 that has received the rotated image data transfers the data to each device on the RAM 2002 or the image bus 2008 by continuous addressing.

  Such a series of processing is repeated until there is no processing request from the CPU 2001 (when processing of the required number of pages is completed).

  The configuration of the device I / F unit 2020 is shown in FIG. The image bus I / F controller 2021 is connected to the image bus 2008, and controls the bus access sequence and generates control and timing of each device in the device I / F unit 2020. In addition, control signals to the scanner 10, the printer 20, and the external RIP 40 are generated. The scan buffer 2022 temporarily stores the image data sent from the scanner 10 and outputs the image data in synchronization with the image bus 2008. The serial-parallel / parallel-serial conversion 2023 arranges the image data stored in the scan buffer 2022 in order or decomposes and converts the image data into a data width that can be transferred to the image bus 2008. The parallel-serial / serial-parallel conversion 2024 decomposes the image data transferred from the image bus 2008 or arranges them in order, and converts the image data into a data width that can be stored in the print buffer 2025. The print buffer 2025 temporarily stores the image data sent from the image bus 2008, and outputs the image data in synchronization with the printer 20. The external RIP buffer 2026 temporarily stores the image data sent from the external RIP 40 and outputs the image data in synchronization with the image bus 2008. The serial-parallel / parallel-serial conversion 2027 arranges the image data stored in the external RIP buffer 2026 in order or decomposes and converts the image data into a data width that can be transferred to the image bus 2008.

  The processing procedure at the time of image scanning is shown below. The image data sent from the scanner 10 is stored in the scan buffer 2022 in synchronization with the timing signal sent from the scanner 10. If the image bus 2008 is a PCI bus, when image data is 32 bits or more in the buffer, the image data is sent in 32 bits on a first-in first-out basis from the buffer to the serial-parallel / parallel-serial conversion 2023. Is transferred to the image bus 2008 through the image bus I / F controller 2021. If the image bus 2008 is IEEE1394, the image data in the buffer is first-in-first-out, sent from the buffer to the serial-parallel / parallel-serial conversion 2023, converted to serial image data, and then converted to serial image data through the image bus I / F controller 2021. Transfer on 2008.

  The processing procedure at the time of image printing is shown below. When the image bus 2008 is a PCI bus, the 32-bit image data sent from the image bus is received by the image bus I / F controller, sent to the parallel serial / serial / parallel conversion 2024, and the number of input data bits of the printer 20 Are stored in the print buffer 2025. When the image bus 2008 is IEEE1394, the serial image data sent from the image bus is received by the image bus I / F controller, sent to the parallel serial / serial / parallel conversion 2024, and the number of input data bits of the printer 20 is It is converted into image data and stored in the print buffer 2025. Then, in synchronization with the timing signal sent from the printer 20, the image data in the buffer is sent to the printer 20 in a first-in first-out manner.

  The processing procedure for capturing an image processed by an external RIP is shown below. The image data sent from the external RIP 40 is stored in the external RIP buffer 2026 in synchronization with the timing signal sent from the external RIP 40. If the image bus 2008 is a PCI bus and the image data is 32 bits or more in the buffer, the image data is sent in 32 bits in first-in first-out, from the buffer to the serial-parallel-parallel-serial conversion 2027, and then 32 bits Is transferred to the image bus 2008 through the image bus I / F controller 2021. If the image bus 2008 is IEEE1394, the image data in the buffer is first-in-first-out, sent from the buffer to the serial-parallel / parallel-serial conversion 2023, converted to serial image data, and then converted to serial image data through the image bus I / F controller 2021. Transfer on 2008.

  Hereinafter, the present invention relates to the present invention.

  When the image processing apparatus is not operated for a certain period of time, the image processing apparatus enters a low power consumption state, a so-called sleep state, in order to reduce power consumption. In this sleep state, power to devices that do not need to be energized is stopped. Therefore, the printer engine main body and the external RIP device are not energized in the sleep state. When the image forming apparatus receives a print job or operates the operation panel, the image forming apparatus returns from the sleep state.

  In the present invention, when PDL data that does not need to be processed by the external RIP device is received during sleep, the external RIP device does not return from the sleep state, but returns only the image processing apparatus main body. FIG. 15 shows a flowchart of the process.

  In step 1, PDL data is received.

  It is determined whether the PDL data received in step 2 is data that needs to be processed by the external RIP device or data that should be processed only by the controller that does not need to be processed by the external RIP device. If the data is to be processed by the external RIP device, go to step 3. If the data is to be processed by the controller, go to step 4.

  In step 3, the printer engine body and the external RIP device are returned from the sleep state.

  In step 4, the PDL data is processed by the external RIP device.

  In step 5, since it is selected in step 2 that the processing is not performed by the external RIP device but only by the controller, the external RIP device is not restored, and only the device necessary for printing is restored.

  In step 6, the PDL data is processed only by the controller without using an external RIP device.

  Print in step 7 and finish.

[effect]
When PDL data that does not need to be processed by an external RIP device is received during sleep, the external RIP device is not restored from sleep, and only the devices required for processing are restored from sleep. Power consumption can be reduced.

(Example 2)
As a second embodiment, an example will be described in which the operation panel is operated to return from the sleep state by, for example, a copy operation. FIG. 16 shows a flowchart.

  In step 1, operate the operation panel.

  In step 2, select whether to restore the external RIP device. If the external RIP device is not restored (no special operation is performed), go to step 3. If you want to restore the external RIP device, go to Step 4.

  In step 3, only devices necessary for copying and the like (printer engine, etc.) are returned from the sleep state.

  In step 4, the external RIP device and a device (printer engine, etc.) necessary for copying are restored from the sleep state.

  In step 5, copy operation is performed from the operation panel.

  In step 6, copy is made and the process ends.

  Since the return is performed by operating the operation panel, the operation is not limited to copying, and may be an operation such as data transmission.

[effect]
When returning from sleep by operating the operation panel during sleep, the external RIP device does not return from sleep, and only the devices required for processing are returned from sleep so that the power consumption during operation of the image forming apparatus Can be reduced.

It is a figure which shows the network system containing the image processing apparatus of this invention. 1 is an external view of an image processing apparatus according to the present invention. It is sectional drawing which shows the whole structure of an image processing apparatus. It is a figure which shows an operation part. It is a figure which shows a LCD display. 2 is a block diagram illustrating configurations of a scanner 10 and a printer 20 in the image forming apparatus. FIG. It is a figure which shows the structure of a controller unit. It is a figure which shows the block diagram of a scanner image processing part. 2 is a block diagram of a printer image processing unit. FIG. It is a figure which shows the block diagram of an image compression process part. It is a figure which shows the block diagram of an image rotation part. It is a figure which shows explanatory drawing of an image rotation process. It is a figure which shows explanatory drawing of an image rotation process. It is a figure which shows the block diagram of a device I / F part. The flowchart at the time of PDL data reception. The flowchart at the time of copy operation | movement.

Claims (3)

  An image forming apparatus having a function of controlling power consumption, having a function of receiving document description data via a network, and having a plurality of processing devices for processing document description data, and receiving An image forming apparatus having a function of selecting a document processing apparatus to process the type of the document description data.   2. The image forming apparatus according to claim 1, wherein the power consumption is controlled by changing energized portions of a plurality of apparatuses included in the image forming apparatus.   3. The image forming apparatus according to claim 2, wherein the document processing apparatus included in the image processing apparatus controls which document processing apparatus is energized by selecting the type of received document description data.

Images