JP2001160894A - Image forming device, image forming method and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming device capable of selecting the presence/ absence of the execution of processing for confirming whether image data is written precisely in an image storing means in accordance with the intention of a user such as which of the reliability of image data or throughput is preferred. SOLUTION: In the image forming device, when the image data is held in a memory 309, the image data is read from the memory 309 and written in a hard disk 312 (step S1). When the preference of reliability is selected, it is decided that verifying operation is to be executed, and the image data written from the disk 312 is read and compared with the image data stored in the memory 309 (steps S2 and S3). When both of the image data do not match with each other from this comparing result (step S4), the image data is written in the disk 312 again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to image input means for inputting image data, image holding means for holding the input image data, and reading out the image data held in the image holding means to image storage means. The present invention relates to an image forming apparatus that includes a writing control unit that enables writing and reads out desired image data from the image storage unit to form an image, and an image forming method and a storage medium used in the image forming apparatus.

[0002]

2. Description of the Related Art Conventionally, there is an image forming apparatus having an electronic sorting function. The electronic sort function is a function of reading all original images to be copied, temporarily storing the image data in a storage unit, reading out any image data from the storage unit, and printing out the image data. With this electronic sorting function, printed sheets can be discharged in a sorted state without installing a sorter or the like having a plurality of bins. Further, by storing predetermined image data, for example, image data for forming a sheet of a predetermined format, in the storage means, this image data can be registered. By reading out the image data and printing it out, it is possible to output a sheet of a predetermined format.

[0003]

However, since image data usually has a large amount of data, large-capacity storage means is required to store image data of a plurality of originals, and the unit price per unit capacity is high. Use of a semiconductor memory leads to an increase in cost. Thus, by using a hard disk device as a storage means instead of a semiconductor memory, it is possible to avoid an increase in cost due to an increase in the capacity of the storage means. However, the data transfer speed of the hard disk device is lower than that of the semiconductor memory, and the transfer time for reading and transferring image data from the hard disk device is longer. Therefore, when a hard disk drive is used, the transfer speed becomes a bottleneck and the overall copying speed cannot be increased.
To reduce the transfer time of this image data, a method of compressing the image data is conceivable. However, some image data is difficult to compress, and this compression method does not necessarily reduce the transfer time of the image data. Is not an effective method. In addition, since the hard disk device includes mechanical elements, the reliability of holding and reading data is lower than that of a semiconductor memory, and the read image data cannot be accurately restored.

In order to improve the reliability of image data in a hard disk drive, a verify operation is performed at the time of writing to the hard disk drive. As a result, when it is detected that a write error has occurred, the write operation is performed again. Perform the operation. If this verify operation is performed, the reliability of data can be certainly improved, but the data transfer speed is reduced overall and the throughput is reduced. That is, the verify operation works effectively when improving the reliability of data, but conversely impairs the throughput capability when priority is given to throughput.

SUMMARY OF THE INVENTION It is an object of the present invention to confirm whether image data has been correctly written in image storage means in accordance with a user's intention, such as giving priority to reliability or throughput of image data. An object of the present invention is to provide an image forming apparatus, an image forming method, and a storage medium that can select whether or not to execute a confirmation process.

[0006]

According to the first aspect of the present invention,
Image input means for inputting image data, image holding means for holding the input image data, and write control means for writing the image data held in the image holding means to an image storage means in a readable manner, In an image forming apparatus capable of reading desired image data from an image storage unit and forming an image, a confirmation process for confirming whether or not the image data has been correctly written to the image storage unit is performed. Means, and selecting means for selecting whether or not to perform the confirmation processing by the confirmation means. When the confirmation processing by the confirmation means has been selected, the image storage is performed by the confirmation means. Means for reading the written image data and performing a confirmation process on the image data, and the image data is stored in the image storage device by the confirmation process. When that in not written correctly is confirmed, by the write control means, and performs re-writing to the image memory means of said image data.

According to a second aspect of the present invention, in the image forming apparatus according to the first aspect, the selection means can select whether or not to perform the confirmation processing by the confirmation means for each operation mode. It is characterized by the following.

According to a third aspect of the present invention, in the image forming apparatus according to the first aspect, the selection means can select whether or not to perform the confirmation processing by the confirmation means for each image forming job. There is a feature.

According to a fourth aspect of the present invention, there is provided an image input means for inputting image data, an image holding means for holding the input image data, and reading out the image data held in the image holding means to an image storage means. Storage control means for writing the image data to the image storage device, wherein the input image data is stored in the image storage device. A step of selecting whether or not to perform a confirmation process for confirming whether or not the image data has been correctly written in the image storage means when storing the image data in the image storage means;
A step of reading the image data written from the image storage means and performing a confirmation processing on the image data when the confirmation processing is selected; and a step of storing the image data in the image storage means by the confirmation processing. Rewriting the image data into the image storage means when it is confirmed that the data has not been correctly written.

According to a fifth aspect of the present invention, in the image forming method of the fourth aspect, it is possible to select whether or not to perform the confirmation processing for each operation mode.

According to a sixth aspect of the present invention, in the image forming method of the fourth aspect, it is possible to select whether or not to perform the confirmation processing for each image forming job.

According to a seventh aspect of the present invention, there is provided an image input means for inputting image data, an image holding means for holding the input image data, and reading out the image data held in the image holding means to an image storage means. A writing control means for writing the image data, and a storage medium storing a program to be executed on an image forming apparatus capable of reading out desired image data from the image storage means and forming an image. A confirmation module for performing a confirmation process for confirming whether or not the image data has been correctly written to the image storage unit; a selection module for selecting whether to perform the confirmation process by the confirmation module; When performing the confirmation processing by the module is selected, the image data written from the image storage means is read. Read by controlling said confirmation module so as to perform the checking process according to the image data, when said image data is not correctly written in the image storage means is confirmed by the confirmation process,
A control module for controlling the writing control means so as to rewrite the image data into the image storage means.

According to an eighth aspect of the present invention, in the storage medium of the seventh aspect, the selection module can select whether or not to perform the confirmation processing by the confirmation module for each operation mode. It is characterized by.

According to a ninth aspect of the present invention, in the storage medium of the seventh aspect, the selection module can select whether or not to perform the confirmation processing by the confirmation module for each image forming job. It is characterized by the following.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram schematically showing the configuration of an embodiment of the image forming apparatus of the present invention.

As shown in FIG. 1, the image forming apparatus has an automatic document feeder 142 mounted thereon.
For example, the originals are conveyed one by one sequentially from the first page to a predetermined position on the original glass table 101. When the original is conveyed to a predetermined position on the original glass table 101, the original image is read by scanning. Specifically, when the original is transported to a predetermined position on the original glass table 101,
The reading surface of the document is illuminated with light from a document illuminating lamp 102 such as a halogen lamp, and the reflected light from the document is sent to the CCD unit 1 via scanning mirrors 103, 104 and 105.
06.

The CCD unit 106 includes the imaging lens 10
7, an image sensor 108, and a driver 109 for driving the image sensor 108. The imaging lens 107 forms the reflected light from the document on the imaging surface of the imaging device 108, and the imaging device 108 converts the optical image formed on the imaging surface into an electric signal and outputs it.

The electric signal output from the image sensor 108 is converted into a digital image signal by an A / D converter (not shown), and then input to the controller 139. The controller 139 performs predetermined processing on the input digital image signal to generate image data. The generated image data is converted into a drive signal for driving a laser unit 117 including a semiconductor laser or the like, and is input to the laser unit 117. The laser unit 117 outputs a laser beam based on the input drive signal, and the laser beam is irradiated on the photosensitive drum 110 while being scanned. An electrostatic latent image corresponding to the laser light is formed on the photosensitive drum 110.

The electrostatic latent image on the photosensitive drum 110 is visualized as a toner image by the toner supplied from the developing device 203. Further, with the start of laser beam irradiation, paper is fed from each of the cassettes 120, 122, and 124 via a group of rollers including pickup rollers 121, 123, and 125. This paper is temporarily stopped by registration rollers 126 and then stopped. The sheet is re-fed toward the photosensitive drum 110 at a predetermined timing. The toner image formed on the photosensitive drum 110 is transferred onto a sheet by a transfer charger 127, and the sheet on which the toner image has been transferred is separated from the photosensitive drum 110 by a separation charger 128 and then fixed by a transport belt 129 to a fixing device. 130. Before this transfer,
A high voltage is applied to the photosensitive drum 110 by the pre-transfer charger 119. After the transfer, the toner remaining on the photosensitive drum 110 is removed by a cleaner 111 and the photosensitive drum 110 is discharged by a pre-exposure lamp 112 in preparation for the formation of the next electrostatic latent image. Next, the photosensitive drum 11
0 is uniformly charged by the primary charger 113.

The sheet conveyed to the fixing unit 130 via the conveying belt 129 is heated and pressed when passing through the fixing unit 130, and the toner image on the sheet is fixed on the sheet. Fixing device 1
The paper that has passed through 30 is guided to a transport path to the staple sorter 132 or a transport path to the intermediate tray 137 by the switching operation of the flapper 131. The paper guided to the transport path leading to the staple sorter 132 is sorted into each bin in the staple sorter 132, and bound by the staple unit 141 as necessary. The operation of sorting the sheets into bins in the staple sorter 132 and the operation of the staple unit 141 are controlled by the controller 139. The sheet guided to the transport path leading to the intermediate tray 137 is sent to the intermediate tray 137 after being inverted or not inverted by each of the feed rollers 133, 134, 135, and 136. Here, the case where the sheet is reversed is the case of the multiplex mode in which images are multiplexed and formed on the same image forming surface on the sheet. The case where the sheet is not inverted is the case of the duplex mode in which images are formed on both sides of the sheet. The sheet placed on the intermediate tray 137 is sent out to the registration roller 126 by the re-feed roller 138.

The controller 139 includes an operation panel 140
The photosensitive drum 110 and the stipple sorter 13 so as to perform the corresponding image forming process based on the instruction input from the
2. The operation of each unit such as the staple unit 141 and each feed roller is controlled.

Next, the configuration of the controller 139 will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of a controller of the image forming apparatus of FIG.

As shown in FIG. 2, the controller 139 has a CPU 201. The CPU 201 sequentially reads and executes a program describing a control procedure of the apparatus main body from a ROM (Read Only Memory) 203, and executes the program. Perform control. The CPU 201 stores the input data used for the arithmetic processing and the result of the arithmetic processing in a temporary RAM (random access memory) 204,
204 is used as a work area.

The CPU 201 controls the ROM 203 and the RA via the bus driver / address decoder 202.
Along with M204, I / O interface (hereinafter I / O interface)
O) 205, image processing unit 206, electronic sorter unit 2
07. The I / O 205 includes an operation panel 14
0, motors 207, clutches 208, solenoids 209, paper detection sensors 210 for detecting the paper being conveyed, a residual toner sensor 211 for detecting the remaining amount of toner in the developing device 118, a high-pressure control unit 215, a beam detection sensor 2 for detecting a laser beam emitted from the laser unit 117 toward the photosensitive drum 110
13 is connected. Motors 207, clutches 2
08 and the solenoids 209 are used to drive a paper feed system, a transport system, and an optical system. The high voltage control unit 215 controls the generation of high voltage in the primary charger 113, the developing device 118, the pre-transfer charger 119, the transfer charger 127, and the separation charger 128.

The image processing unit 206 includes the CCD unit 10
The digital image signal output from 6 is input, and image processing is performed on the digital image signal to generate image data. This image data is converted into a drive signal for the laser unit 117 described above, and
Is output to Details of the image processing unit 206 will be described later. The electronic sorter unit 207 stores image data,
Perform output. The details of the electronic sorter unit 207 will be described later.

Next, the detailed configurations of the image processing unit 206 and the electronic sorter unit 207 will be described with reference to FIG. FIG. 3 is a block diagram showing a configuration of an image processing unit and an electronic sorter unit in the controller of FIG.

The image processing unit 206, as shown in FIG.
The digital image signal output from the CCD unit 106 is provided with a shading correction unit 301 that performs shading correction for correcting uneven light distribution, uneven sensitivity of the image sensor 108, and the like, and corrects variations in luminance between pixels. . The digital image signal subjected to the shading correction is input to the scaling unit 302, and the scaling unit 302 performs scaling processing such as enlargement and reduction based on the input digital image signal. In the enlargement processing, data interpolation processing is performed, and in the reduction processing, data thinning processing is performed.

The signal output from the scaling section 302 is input to an edge emphasis section 303, and the edge emphasis section 303 performs edge emphasis by emphasizing high-frequency components of the input signal. For example, a second derivative is performed in a 5 × 5 window to emphasize the edges of the image. Edge enhancement unit 303
Is a luminance signal, the signal is input to the gamma converter 304 and converted into density data.
The γ conversion unit 304 converts an input signal into density data with reference to a luminance-density conversion table stored in advance. This density data is input to the binarization processing unit 305, and the binarization processing unit 305 converts the input density data into a binary data.
The binary data is converted into value data, and the binary data is output as image data. For example, the density data is converted into binary data by the ED method.

The image data output from the binarization processing unit 305 is input to the electronic sorter unit 207. The electronic sorter unit 207 has a memory control unit 308. The memory control unit 308 receives the image data from the binarization processing unit 305 and stores the image data in the memory 309 including a DRAM or the like. Further, the memory control unit 308 reads out the image data stored in the memory 309 as necessary and transfers it to the image compression unit 310. Image compression unit 31
0 compresses the transferred image data, and the compressed image data is stored in the hard disk 312 via the HD controller 311. The image compression unit 31
The image compression performed at 0 is lossless compression, and the image data size after compression is unknown until the end of compression. The compressed image data stored in the hard disk 312 is decompressed as needed, and stored in the memory 309 again. When performing an image rotation process or the like, the rotation process is executed by controlling a read address and a write address for the memory 309.

At the time of image output, the memory control unit 308 reads out image data from the memory 309 and outputs it to the PWM 307, or outputs image data from the binarization processing unit 305. The PWM 307 performs pulse width modulation on the image data from the memory control unit 308 to convert the image data into a drive signal for the laser unit 117.

Next, the configuration of the operation panel 140 will be described with reference to FIG. FIG. 4 is a diagram showing a configuration of an operation panel of the image forming apparatus of FIG.

The operation panel 140 is, as shown in FIG.
It has a plurality of keys for setting various functions related to image formation and a liquid crystal display (hereinafter referred to as a touch panel) 416 for displaying information indicating a setting state, and a key signal corresponding to each key operation is transmitted to the I / O 205. CPU 20 via
1 and displays the corresponding information on the touch panel 416 based on the signal from the CPU 201. Specifically, on the operation panel 140, a power switch 401 for turning on the power to the main body, a preheating key 402 for shifting to the power saving mode and returning from the power saving mode, and a copy job A or B Copy mode key 403 for selecting copy job A and instructing its execution, copy mode key 404 for selecting copy job B of copy jobs A and B and instructing its execution, and setting facsimile mode Facsimile mode key 40
5. An extension key 406 for setting an extended function (in this embodiment, used as a key for setting any of a printer mode, a scanner mode, and a format mode), a start key for instructing a start of copying 407, a stop key 408 for instructing copy interruption and cancellation, a reset key 409 for instructing a reset operation, a guide key 410 for instructing display of guide information and the like regarding each function, and instructing a change in system settings. Mode key 411, an interrupt key 412 for instructing interruption such as interruption of another copy job during copying, a numeric keypad group 413 for inputting numerical values, etc., a clear key for clearing input numerical values, etc. 414, an ID key for instructing a transition to a screen for inputting a user ID; Each hard key is provided of 415. Here, the facsimile mode includes a mode in which a read document image is transmitted by facsimile.
The printer mode is a mode in which an image transferred from a host computer via a network or directly is printed out. The scanner mode is a mode in which a read document image is transferred to a partner device via a network or the like. In addition, form mode
In this mode, an image for forming a predetermined format sheet is read and stored in the hard disk 312, or an image on the format sheet is read from the hard disk 312, and the newly read image is superimposed on the image and copied and output.

The touch panel 416 displays a setting screen corresponding to each mode and touch keys for performing various settings. Further, the operation panel 140 is provided with a tally lamp 417 indicating a communication state of the network.
The tally lamp 417 is lit green when communication is performed normally, and red when an error occurs.

In the above description, a specific configuration for executing each of the facsimile mode, the printer mode, the scanner mode, and the form mode is not explicitly described. However, these modes can be executed together with the copy mode. Has already been achieved, and the description thereof is omitted here.

In the present embodiment, when storing image data in the hard disk 312, a verifying execution program for executing a verifying process for verifying whether or not the image data has been correctly written to the hard disk 312, ie, a verifying operation, is provided. The program is stored in the ROM 203, and the verify operation is executed by the CPU 201 executing the program. The verification execution program includes a selection module for selecting whether or not to perform a verification operation for each operation mode, and, when the verification operation is selected, reading image data from the hard disk 312 and verifying the image data. And a control module that controls to perform the operation, and when the verify operation confirms that the image data is not correctly written to the hard disk 312, the control module controls to perform the rewriting of the image data to the hard disk 312. include. Here, the operation modes include copy, fax, printer, scanner, and form operation modes. The copy operation mode is an operation mode for copying a read original image, the facsimile operation mode is an operation mode for transmitting a read original image by facsimile, and the printer operation mode is a mode from a host computer. An operation mode for printing out an image transferred directly or via a network, and a scanner operation mode refers to an operation mode for transferring a read document image to a partner apparatus via a network or the like. Further, the form operation mode refers to a case where an image for forming a predetermined format sheet is read and stored in the hard disk 312 or an image of the format sheet is read from the hard disk 312 and a newly read image is superimposed on the image. This is the operation when copying and outputting.

The verify operation will be described with reference to FIGS. 5 is a diagram showing an example of a verify operation selection screen displayed on the operation panel, FIG. 6 is a block diagram showing a configuration for executing a verify operation in the memory control unit in FIG. 3, and FIG. 7 is a diagram in the image forming apparatus in FIG. 9 is a flowchart illustrating a procedure for writing image data.

To select whether or not to perform the verify operation,
A verify operation selection screen displayed on touch panel 416 of operation panel 140 is used. As shown in FIG. 5, each operation mode 50 is displayed on the verification operation selection screen.
A "speed priority" key 506 and a "reliability priority" key 507 are displayed every 1 to 505, and for each operation mode, a key 506 is used to determine whether or not to perform a verify operation when storing image data in the hard disk 312. , 507 can be set. Here, when the "speed priority" key 506 is selected, the display is shaded to indicate that the "speed priority" key 506 is selected, and the setting is made so that the verify operation is not performed. On the other hand, when the “reliability priority” key 507 is selected, the “reliability priority” key 507 is shaded to indicate that the key has been selected, and the verification operation is set.

On this selection screen, a "cancel" key 508 and a "return" key 509 are further displayed.
When the "cancel" key 508 is selected, the input information is canceled, and the selection screen is returned to the initial state. When the “return” key 509 is selected, the screen is shifted to the screen immediately before this selection screen.

Next, a configuration for executing the verify operation in the memory control unit 308 will be described with reference to FIG.

As shown in FIG. 6, the memory control unit 308 has a control unit 601. The control unit 601 controls the input of the image data output from the binarization processing unit and stores the image data in the memory 309. It controls writing and reading, and controls transmission and reception of image data to and from the image compression unit 310. When storing image data in the hard disk 312, 2
The image data output from the binarization processing unit is
0 is written to the hard disk 312 via the HD controller 311 and held in the memory 309. Here, when the verification operation is set, the data written to the hard disk 312 is read again via the image compression unit 310, and the image data held in the memory 309 is read. The image data read from the hard disk 312 and the image data read from the memory 309 are input to the comparison unit 602. The comparison unit 602 compares the input image data, and outputs “0” as the comparison result when the two match, and “1” when the two are different. The comparison result is given to the counter 603, and the counter 603 outputs a count value according to the comparison result. When "0" is given as the comparison result, a count value indicating that the two image data match is output. When "1" is given as the comparison result, the two image data match. A count value indicating that there is no output is output. From this count value, it is determined whether or not the image data has been normally written to the hard disk 312. If it is determined that the image data has not been normally written to the hard disk 312, the memory 309
The image data stored in the hard disk 31 again.
2 to be written.

Next, the image data is transferred to the hard disk 312.
The procedure for writing data to is described with reference to FIG.

When the image data is stored in the memory 309, the image data is read from the memory 309 in step S1, and this image data is
And then write it to the hard disk 312 after compression. Next, the process proceeds to step S2, where it is determined whether or not reliability priority is selected. When reliability priority is selected, it is determined that the verify operation is to be performed, and the process proceeds to step S3, where the image data written from the hard disk 312 is read, and the image data read from the hard disk 312 and the image held in the memory 309 are read. Compare with data. Next, the process proceeds to step S4, where the image data read from the hard disk 312 and the memory 309 are read based on the comparison result (the count value of the counter 603).
It is determined whether or not the image data stored in the. If the two image data do not match, the flow returns to step S 1 to read the image data from the memory 309 again and write it to the hard disk 312. On the other hand, when the two image data match, the process ends.

In step S2, when the reliability priority is not selected, that is, when the speed priority is selected, it is determined that the verify operation is not to be performed, and the process is terminated.

As described above, in the present embodiment, when storing image data in the hard disk 312, whether or not to execute the verify operation for confirming whether or not the image data has been correctly written to the hard disk 312 is determined. Is selected for each operation mode, it is possible to select whether or not to execute the verify operation according to the user's intention such as giving priority to image data reliability or throughput.

In the present embodiment, whether or not to execute the verify operation is selected for each operation mode. Instead, whether or not to execute the verify operation for each job is selected. Can be configured.

In the present embodiment, an example has been described in which the verifying execution program is stored in the ROM 203, but the program is stored in another storage medium such as a hard disk device or a memory card and supplied. It goes without saying that this may be done.

[0048]

As described above, according to the image forming apparatus of the first aspect, the checking means for performing the checking process for checking whether the image data has been correctly written in the image storing means, Selecting means for selecting whether or not to perform the confirmation processing by the confirmation means. When the confirmation processing by the confirmation means is selected, the confirmation means reads out the image data written from the image storage means. When the confirmation processing confirms that the image data is not correctly written in the image storage unit, the writing control unit transmits the image data to the image storage unit. Since rewriting is performed, the image data is accurately written to the image storage means according to the user's intention, such as giving priority to the reliability or throughput of the image data. Whether to execute the confirmation process for confirming whether or not written can be selected.

According to the image forming apparatus of the present invention, the selecting means can select whether or not to perform the checking process by the checking means for each operation mode.

According to the image forming apparatus of the third aspect, it is possible to configure so that the selecting unit can select whether or not to perform the checking process by the checking unit for each image forming job.

According to the image forming method of the present invention, when the input image data is stored in the image storage means, the confirmation processing for confirming whether or not the image data is correctly written in the image storage means is performed. A step of selecting whether or not to perform the image processing; and a step of reading out the written image data from the image storage means and performing a confirmation processing on the image data when the confirmation processing is selected. Rewriting the image data to the image storage means when it is confirmed that the image data has not been correctly written to the image storage means. It is possible to select whether or not to execute a confirmation process for confirming whether or not the image data has been correctly written to the image storage means according to the user's intention, such as. Can.

According to the image forming method of the present invention, it is possible to select whether or not to perform the confirmation processing for each operation mode.

According to the image forming method of the present invention, it is possible to select whether or not to perform the confirmation processing for each image forming job.

According to the storage medium of the present invention, the program executes a confirmation module for confirming whether or not image data has been correctly written to the image storage means, and a confirmation process by the confirmation module. A selection module for selecting whether or not to perform the check, and a check module for reading the written image data from the image storage means and performing the check processing on the image data when the check processing by the check module is selected. And a control module for controlling the writing control means to rewrite the image data to the image storage means when it is confirmed by the confirmation processing that the image data is not correctly written to the image storage means. User's intention to prioritize reliability of image data or throughput. Whether to execute the confirmation process for confirming whether or not the image data has been correctly written into the image storage means can be selected in accordance with.

According to the storage medium of the eighth aspect, it is possible to configure so that the selection module can select whether or not to perform the confirmation processing by the confirmation module for each operation mode.

According to the storage medium of the ninth aspect, the selection module can select whether or not to perform the confirmation processing by the confirmation module for each image forming job.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a configuration of an embodiment of an image forming apparatus of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a controller of the image forming apparatus of FIG. 1;

FIG. 3 is a block diagram showing a configuration of an image processing unit and an electronic sorter unit in the controller of FIG. 2;

FIG. 4 is a diagram illustrating a configuration of an operation panel of the image forming apparatus of FIG. 1;

FIG. 5 is a diagram showing an example of a verify operation selection screen displayed on the operation panel.

FIG. 6 is a block diagram showing a configuration for executing a verify operation in the memory control unit of FIG. 3;

FIG. 7 is a flowchart illustrating a procedure for writing image data in the image forming apparatus of FIG. 1;

[Explanation of symbols]

 139 Controller 140 Operation panel 201 CPU 206 Image processing unit 207 Electronic sorter unit 308 Memory control unit 309 Memory 312 Hard disk 601 Control unit 602 Comparison unit 603 Counter

Claims (9)

[Claims] 1. An image input means for inputting image data,
An image holding unit that holds the input image data; and a writing control unit that rewritably writes the image data held in the image holding unit to an image storage unit, and reads desired image data from the image storage unit. A confirmation unit for confirming whether or not the image data has been correctly written in the image storage unit, and a confirmation process by the confirmation unit. Selection means for selecting whether or not to perform, when the confirmation processing by the confirmation means is selected, the confirmation means reads out the image data written from the image storage means, A confirmation process is performed on the image data, and the confirmation process confirms that the image data is not correctly written in the image storage unit. Is the time was, in the write control means, an image forming apparatus and performs rewriting to the image storage unit of the image data. 2. The image forming apparatus according to claim 1, wherein the selection unit can select whether or not to perform the confirmation processing by the confirmation unit for each operation mode. 3. The image forming apparatus according to claim 1, wherein the selection unit is capable of selecting whether or not to perform the confirmation processing by the confirmation unit for each image forming job. 4. An image input means for inputting image data,
An image holding unit for holding the input image data; and a storage control unit for writing the image data held in the image holding unit to the image storage unit in a readable manner, and reading desired image data from the image storage unit. In an image forming method used in an image forming apparatus capable of performing image formation by using an image forming method, whether the image data is correctly written in the image storing means when the input image data is stored in the image storing means, Selecting whether or not to perform a confirmation process for confirming whether or not to perform the confirmation process, reading out the image data written from the image storage means and confirming the image data when the confirmation process is selected. Performing the processing and confirming that the image data is not correctly written in the image storage means by the confirmation processing. Kiniwa, image forming method characterized by a step of re-writing to the image storage unit of the image data. 5. The image forming method according to claim 4, wherein it is possible to select whether or not to perform the confirmation processing for each operation mode. 6. The image forming method according to claim 4, wherein it is possible to select whether or not to perform the confirmation processing for each image forming job. 7. An image input means for inputting image data,
An image holding unit that holds the input image data; and a writing control unit that rewritably writes the image data held in the image holding unit to an image storage unit, and reads desired image data from the image storage unit. A storage medium storing a program to be executed on an image forming apparatus capable of performing image formation by using the program, wherein the program is for confirming whether or not the image data is correctly written in the image storage means. A confirmation module for performing a confirmation process, a selection module for selecting whether or not to perform the confirmation process by the confirmation module, and writing from the image storage means when the confirmation process by the confirmation module is selected. The confirmation module reads out the acquired image data and performs a confirmation process on the image data. And when it is confirmed that the image data is not correctly written to the image storage unit by the confirmation process, the writing control unit is configured to rewrite the image data to the image storage unit. A storage medium, comprising: a control module for controlling. 8. The storage medium according to claim 7, wherein the selection module can select whether or not to perform the confirmation processing by the confirmation module for each operation mode. 9. The storage medium according to claim 7, wherein the selection module can select whether or not to perform the confirmation processing by the confirmation module for each image forming job.