JP6733592B2 - Image forming apparatus and image forming program - Google Patents

Description

The present invention relates to an image forming apparatus and an image forming program suitable for using a RAM (Random Access Memory) disk.

For example, an image forming apparatus such as an MFP (Multifunction Peripheral) has a print function, a copy function, a FAX function, a data transmission/reception function via a network, and the like. In addition, some image forming apparatuses equipped with these various functions are equipped with a memory management function that allocates a RAM disk area to a part of the image data storage area of the existing RAM. By installing such a memory management function, even an image forming apparatus that does not include a large-capacity storage such as an SSD (Solid State Drive) or an HDD (Hard Disk Drive) can save the image data storage area of the RAM. Image data can be stored in part.

As one related to such a memory management function, in Patent Document 1, a RAM in which a plurality of areas including an area for storing image data are secured, and a flash memory for storing distribution information that is information on distribution of areas on the RAM And an OS that reserves an area on the RAM, a boot means that boots the OS, and a distribution information changing means that changes the distribution information stored in the flash memory. Contains the information of the distribution of the area that is impossible after the OS is started, the boot means writes the distribution information in the RAM before the OS is started, and the OS can access the flash memory when booted by the boot means. Prior to this, an image forming apparatus that secures an area on the RAM based on distribution information stored in the RAM is proposed.

JP 2012-078937A

In the image forming apparatus described in Japanese Patent Laid-Open No. 2004-242242, since the OS reserves an area on the volatile storage device at the time of booting based on the distribution information changed by the distribution information changing unit, changing the distribution on the volatile storage device. The distribution can be changed for the area where the distribution cannot be changed after the OS is started, which is an area that is impossible after the OS is started. That is, when the area for which the distribution cannot be changed after the OS is started includes the area for the RAM disk, the distribution of the area for the RAM disk can be changed.

However, in the image forming apparatus of Patent Document 1, although the distribution of the area for the RAM disk can be changed, when the image data is stored in the RAM, the setting operation of the ON/OFF of the RAM disk and the size of the area for the RAM disk are performed. However, there is a problem that the setting operation is troublesome because the setting operation is required. Further, once the area for the RAM disk is set, there is a problem that the size of the work area of the RAM used in the arithmetic processing is reduced.

The present invention has been made in view of such a situation, and an object thereof is to provide an image forming apparatus and an image forming program capable of solving the above-mentioned problems.

An image forming apparatus of the present invention includes a volatile memory, a memory management unit that manages an image data storage area of the volatile memory, and allocates a temporary storage fixed area for storing image processing data in the image data storage area, The memory management unit is instructed to allocate the temporary storage fixed area according to the data size of the image processing data, and after the processing related to the image processing data is completed, the temporary storage fixing is performed to the memory management unit. A system control unit for instructing release of an area, the memory management unit sets a temporary storage temporary area in the image data storage area of the volatile memory, and the temporary storage temporary area is set with a capacity threshold value. The image processing data is stored in the temporary storage temporary area, and the system control unit stores the image processing data in the temporary storage area. Is calculated, and the memory management unit is instructed to allocate the temporary storage fixed area according to the data size in the temporary storage temporary area .
Further, the system control unit includes a panel unit, and when the data size of the image processing data exceeds the size of the temporary storage temporary region, the system control unit causes the panel unit to display an error, and the temporary storage temporary region. It is characterized in that the image processing data stored in is deleted.
The image forming program of the present invention includes a step of managing an image data storage area of a volatile memory by a memory management section and allocating a temporary storage fixed area for storing image processing data in the image data storage area, and a system control section. Instructing the memory management unit to allocate the temporary storage fixed area according to the data size of the image processing data, and after the processing related to the image processing data is completed, A step of instructing the release of the fixed storage area is executed by a computer controlling the image forming apparatus, and the memory management unit sets a temporary storage temporary area in the image data storage area of the volatile memory, The temporary area is an area for storing the image processing data, in which a capacity threshold value is set, and is an area that can be used in arithmetic processing based on the processing of a program. Calculating a data size of the image processing data stored in the temporary area and instructing the memory management unit to allocate the temporary storage fixed area according to the data size in the temporary storage temporary area. Characterize.
As a result, the image processing data can be temporarily stored in the temporary storage fixed area allocated according to the data size of the image processing data, and the temporary storage fixed area is subjected to the image processing after the processing related to the image processing data is completed. Can be released as an image data storage area of the volatile memory used in the arithmetic processing based on the processing of the application program related to.

According to the image forming apparatus and the image forming program of the present invention, the image processing data can be temporarily stored in the temporary storage fixed area assigned according to the data size of the image processing data. It is possible to eliminate the setting operation related to the area allocation for the temporary storage of. Further, since the temporary storage fixed area is released as the image data storage area of the volatile memory after the processing related to the image processing data is completed, the volatile used in the arithmetic processing based on the processing of the application program related to the image processing. It is possible to suppress the reduction of the size of the image data storage area of the memory.

It is a diagram for explaining an embodiment of an image forming apparatus of the present invention. FIG. 2 is a diagram illustrating an example of a RAM memory map managed by the memory management unit in FIG. 1, and FIG. 2A is a diagram showing a memory map before a temporary storage fixed area is allocated to a work area of the RAM. 2B is a diagram showing a memory map after the temporary storage fixed area is allocated to the work area of the RAM. 3A and 3B are views for explaining an example of setting of a conventional RAM disk for the RAM of FIG. 1, FIG. 3A is a view showing a RAM disk ON/OFF setting screen, and FIG. 3B is a RAM disk size setting. It is a figure which shows a screen. 5 is a flowchart for explaining a process of allocating a temporary storage fixed area to a RAM by the system control unit of FIG. 1.

An embodiment of the image forming apparatus of the present invention will be described below with reference to FIGS. An example of an image forming apparatus in the following description is an MFP (Multifunction Peripheral) which is a composite peripheral device equipped with a print function, a copy function, a FAX function, a data transmission/reception function via a network, and the like. I shall.

First, as illustrated in FIG. 1, the MFP 100 includes a control unit that controls operations of a scanner unit 101, a printer unit 102, a FAX unit 103, an I/F (interface) 104, a panel unit 105, and an HDD (Hard Disk Drive) 106. It is equipped with 110. It should be noted that although the MFP 100 according to the present embodiment is provided with the HDD 106, the HDD 106 may not be provided.

The scanner unit 101 is a device that converts an image on a sheet (not shown) read by an image sensor (not shown) into digital image data and inputs the digital image data to the control unit 110. The printer unit 102 is a device that prints an image on a sheet (not shown) based on print data output from the control unit 110. The FAX unit 103 is a device that transmits the data output from the control unit 110 to a facsimile as the other party through a telephone line, receives the data from the other party's facsimile, and inputs the data to the control unit 110.

The I/F 104 is responsible for communication with other MFPs 100, user terminals, and the like via the network. The I/F 104 may be in charge of communication with a content server, a web server, or the like (not shown). The panel unit 105 is a device having a print function, a copy function, a FAX function of the MFP 100, a data transmission/reception function via a network, a touch panel for displaying various settings, and a hardware key. The HDD 106 is a storage device that stores an application program for providing various functions of the MFP 100.

The control unit 110 is a processor that executes an application program such as an authentication program, an image forming program, and a control program to control the overall operation of the MFP 100. The control unit 110 includes a scanner control unit 111, a printer control unit 112, a FAX (Facsimile) control unit 113, a communication control unit 114, a RAM (Random Access Memory) 115, and an EEPROM (electrically erasable and programmable read-only) image 116. A processing unit 117, a memory management unit 118, a panel operation control unit 119, an HDD control unit 120, and a system control unit 121 are provided. Further, these are connected to the data bus 122. The HDD control unit 120 may be omitted if the MFP 100 does not include the HDD 106.

The scanner control unit 111 controls the reading operation of the scanner unit 101. The printer control unit 112 controls the printing operation of the printer unit 102. The FAX control unit 113 controls a data transmission/reception operation by the FAX unit 103. The communication control unit 114 controls transmission/reception of data and the like via the network via the I/F 104. The RAM 115 is a work memory for executing a program. The RAM 115 also stores print data that has been image-processed by the image processing unit 117. A RAM disk is set in the RAM 115. The EEPROM 116 stores a control program for checking the operation of each part and generating a startup sequence.

The image processing unit 117 performs image processing (rasterization) on the image data read by the scanner unit 101. The image processing unit 117 also performs image processing (rasterization) on the print job registered in the user box of the HDD 106. The system control unit 121 temporarily stores the print data subjected to the image processing by the image processing unit 117 in the RAM 115.

The memory management unit 118 manages the image data storage area of the RAM 115. The image data storage area of the RAM 115 is a work area 115a shown in FIG. Further, the memory management unit 118 allocates a temporary storage fixed area 115c in a temporary storage temporary area 115d of a work area 115a shown in FIG. 2B described later according to an instruction from the system control unit 121. The temporary storage fixed area 115c is a memory management area depending on the data size of a print job from a user terminal (not shown), print data in a page description language, or image data of a document read by the scanner unit 101. It is assigned by the section 118. Further, the memory management unit 118 instructs the system control unit 121 when the print processing for the print job or the print data in the page description language is completed, or when the copy processing for the image data of the document read by the scanner unit 101 is completed. Thus, the temporary storage fixed area 115c is released. That is, the memory management unit 118 erases the temporary storage fixed area 115c and allocates the area released by the deletion to the work area 115a shown in FIG. 2B described later. As a result, the temporary storage fixed area 115c can be used as a work area 115a shown in FIG. 2B described later.

The panel operation control unit 119 controls the display operation of the panel unit 105. The panel operation control unit 119 also accepts settings such as printing, copying, FAX, and data transmission/reception via a network via the panel unit 105. The HDD control unit 120 controls reading and writing of data with respect to the HDD 106. The system control unit 121 controls the cooperative operation of each unit. Further, when the system control unit 121 receives a print job from a user terminal (not shown), print data in a page description language, or the like via the communication control unit 114, the system control unit 121 stores a work area 115a shown in FIG. A print job or print data in the page description language is stored in the temporary storage temporary area 115d. Further, the system control unit 121 stores the image data of the document read by the scanner unit 101 in the temporary storage temporary area 115d of the work area 115a. Further, the system control unit 121 controls the print job from the user terminal stored in the temporary storage temporary area 115d, the data size of the print data in the page description language, or the data size of the image data of the document read by the scanner unit 101. Accordingly, the memory management unit 118 is caused to allocate the temporary storage fixed area 115c. In this case, the system control unit 121 excludes the temporary storage fixed area 115c in the arithmetic processing based on the processing of the application program for executing the print function, the copy function, the FAX function, and the data transmission/reception function via the network. Area 115a can be used.

Further, when the print processing for the print job or the print data in the page description language is completed, or the copy processing for the image data of the document read by the scanner unit 101 is completed, the system control unit 121 instructs the memory management unit 118 to perform processing. , To release the temporary storage fixed area 115c. As a result, the temporary storage fixed area 115c is released. The system control unit 121 is a work area including the released temporary storage fixed area 115c in the arithmetic processing based on the processing of the application program for executing the print function, the copy function, the FAX function, and the data transmission/reception function via the network. 115a can be used.

Next, an example of the memory map of the RAM 115 managed by the memory management unit 118 will be described with reference to FIG. First, FIG. 2A shows a memory map before the temporary storage fixed area 115c is allocated to the work area 115a of the RAM 115. That is, it is assumed that the storage area of the RAM 115 has a size of 256 MB, for example. Further, it is assumed that the storage area of the RAM 115 is allocated with a system area 115b having a size of 56 MB, for example. As a result, the work area 115a of the RAM 115 becomes 200 MB. Further, a temporary storage temporary area 115d having a threshold value of, for example, 100 MB is set in the work area 115a. The temporary storage temporary area 115d is an area for temporarily storing, for example, a print job received from a user terminal (not shown), print data in a page description language, or image data of a document read by the scanner unit 101. The temporary storage temporary area 115d is based on the processing of the application program for the system control unit 121 to execute the print function, the copy function, the FAX function, and the data transmission/reception function via the network, like the work area 115a. This is an area that can be used in the calculation processing. The threshold value of the temporary storage temporary area 115d is not limited to 100 MB, and the setting can be changed arbitrarily.

FIG. 2B shows a memory map when the temporary storage fixed area 115c is allocated in the temporary storage temporary area 115d of the work area 115a of the RAM 115. That is, when the system control unit 121 receives a print job or print data in a page description language from a user terminal (not shown) via the communication control unit 114, the user terminal is stored in the temporary storage temporary area 115d of the work area 115a. The print job from the or the print data in the page description language is stored. Further, the system control unit 121 stores the image data of the document read by the scanner unit 101 in the temporary storage temporary area 115d of the work area 115a. The print job from the user terminal, the print data in the page description language, or the image data of the document read by the scanner unit 101 in the temporary storage temporary area 115d can be stored in any temporary storage temporary area 115d. It may be a location. If the data size of the print job, print data, or image data exceeds 100 MB, which is the threshold value of the temporary storage temporary area 115d, the system control unit 121 causes the panel unit 105 to display an error via the panel operation control unit 119. .. In this case, the system control unit 121 stores the print job from the user terminal stored in the temporary storage temporary area 115d of the work area 115a, the print data in the page description language, or the image data of the original read by the scanner unit 101. delete. As a result, a print job from a new user terminal, print data in a page description language, or image data of an original read by the scanner unit 101 can be stored in the temporary storage temporary area 115d of the work area 115a.

Further, the system control unit 121 controls the print job from the user terminal stored in the temporary storage temporary area 115d, the data size of the print data in the page description language, or the data size of the image data of the document read by the scanner unit 101. Accordingly, the memory management unit 118 is caused to allocate the temporary storage fixed area 115c. Here, the system control unit 121 determines that the print job stored in the temporary storage temporary area 115d of the work area 115a, the print data in the page description language, or the image size of the document image read by the scanner unit 101 has a data size of 16 MB. In some cases, the memory management unit 118 is instructed to allocate the temporary storage fixed area 115c to the RAM 115 as 16 MB.

As a result, the memory management unit 118 allocates the temporary storage fixed area 115c having a data size of 16 MB in the temporary storage temporary area 115d of the work area 115a. In this way, by the memory management unit 118 allocating the temporary storage fixed area 115c, the print job from the user terminal stored in the temporary storage fixed area 115c, the print data in the page description language, or the scanner unit 101 The image data of the read document can be stored until the processing of each data is completed. Although FIG. 2B shows a case where the temporary storage fixed area 115c is assigned to the preceding stage in the temporary storage temporary area 115d, the present invention is not limited to this. That is, the memory management unit 118 stores, for example, a temporary storage temporary storage area for the print job from the user terminal, the print data in the page description language, or the image data of the document read by the scanner unit 101 in the temporary storage temporary area 115d. If it is the middle stage or the latter stage in the area 115d, the temporary storage fixed area 115c is allocated to the middle stage or the latter stage.

Further, the memory management unit 118 erases the temporary storage fixed area 115c allocated in the temporary storage temporary area 115d of the work area 115a according to an instruction from the system control unit 121. That is, the system control unit 121 manages the memory when the print process for the print job from the user terminal or the print data in the page description language is completed, or when the copy process for the image data of the document read by the scanner unit 101 is completed. The unit 118 is instructed to release the temporary storage fixed area 115c. That is, the memory management unit 118 erases the temporary storage fixed area 115c and allocates the area released by the deletion to the work area 115a shown in FIG. 2B described later. As a result, the temporary storage fixed area 115c can be used as the work area 115a.

Here, with reference to FIG. 3, an example of the setting of the RAM disk for the conventional RAM 115 will be described. First, FIG. 3A shows an example of the RAM disk ON/OFF setting screen 105A displayed on the panel unit 105. Conventionally, when a RAM disk is set in the RAM 115, a RAM disk ON/OFF setting screen 105A is displayed on the panel unit 105, and ON is selected by a touch operation in the ON/OFF setting selection field 105a (in this case, the illustration is omitted. Although it has not been done, the dotted line frame is changed to a solid line frame to indicate that ON is selected), and the display of the panel unit 105 is switched to the RAM disk size setting screen 105B shown in FIG. 3B.

On the RAM disk size setting screen 105B, for example, a selection field 105b to be touch-operated when changing the size (for example, 16 MB) of the RAM disk before the change to 1 MB and the size of the RAM disk between 1 to 16 MB are arbitrarily set. A selection field 105c to be touch-operated for setting is displayed. Here, for example, when the selection field 105b is touch-operated, the dotted frame is changed to a solid frame, which indicates that the selection field 105b is selected. As a result, the size of the RAM disk before the change is changed to 1 MB. Further, for example, when the selection field 105c is touch-operated, the dotted frame is changed to a solid frame, which indicates that the selection field 105c is selected. Here, if an arbitrary size is set between 1 and 16 MB, for example, 5 MB, the size of the RAM disk before the change is changed to 5 MB.

As described above, in the conventional setting of the RAM disk, operations related to the setting of the RAM disk ON on the RAM disk ON/OFF setting screen 105A and the setting of the RAM disk size on the RAM disk size setting screen 105B are performed. Will be required. Moreover, once the size of the RAM disk is set, for example, the size of the work area 115a shown in FIG. 2A is reduced by the size of the set RAM disk.

Therefore, in the present embodiment, the operation related to the setting of the RAM disk ON on the RAM disk ON/OFF setting screen 105A and the operation related to the setting of the RAM disk size on the RAM disk size setting screen 105B are eliminated, and the work area 115a is saved. A method is adopted in which the temporary storage fixed area 115c corresponding to the data size to be stored in the temporary storage temporary area 115d is allocated and the temporary storage fixed area 115c is released after the processing on the stored data is completed. As a result, the data can be temporarily stored without performing the setting operation related to the area distribution of the temporary storage fixed area 115c for the temporary storage of data, and the processing for the data stored in the temporary storage fixed area 115c can be performed. After the above, the temporary storage fixed area 115c is released to avoid the size reduction of the work area 115a.

Next, referring to FIG. 4, a process of allocating the temporary storage fixed area 115c to the RAM 115 by the system control unit 121 will be described. In the following, a case will be described where print data described in, for example, a page description language is received from a user terminal (not shown).

(Step S101)
The system control unit 121 determines whether the print data described in the page description language has been received.
In this case, the system control unit 121 has not received the print data described in the page description language unless there is a notification from the communication control unit 114 indicating that the print data described in the page description language has been received. It is determined (step S101: No).
On the other hand, the system control unit 121 receives print data described in the page description language if there is a notification from the communication control unit 114 indicating that the print data described in the page description language has been received. The determination is made (step S101: Yes), and the process proceeds to step S102.
The system control unit 121 stores the print data described by the page description language received by the communication control unit 114, for example, in the temporary storage temporary area 115d of the work area 115a in FIG. 2A.

(Step S102)
The system control unit 121 calculates the data size.
In this case, the system control unit 121 calculates the data size of the print data described in the page description language stored in the temporary storage temporary area 115d of the work area 115a of FIG. 2A, for example.

(Step S103)
The system control unit 121 instructs the allocation of the temporary storage fixed area 115c.
In this case, the system control unit 121 instructs the memory management unit 118 to allocate the temporary storage fixed area 115c.
That is, when the data size of the print data described in the page description language stored in the temporary storage temporary area 115d of the work area 115a is 16 MB, for example, the system control unit 121 instructs the memory management unit 118 to access the RAM 115. The temporary storage fixed area 115c is designated as 16 MB.
As a result, the memory management unit 118 allocates the temporary storage fixed area 115c having a data size of 16 MB in the temporary storage temporary area 115d of the work area 115a as shown in FIG. 2B.

(Step S104)
The system control unit 121 determines whether the allocation is completed.
In this case, the system control unit 121 determines that the allocation has not been completed unless there is a notification from the memory management unit 118 indicating that the allocation has been completed (step S104: No).
On the other hand, if there is a notification from the memory management unit 118 indicating that the allocation has been completed, the system control unit 121 determines that the allocation has been completed (step S104: Yes), and proceeds to step S105.

(Step S105)
The system control unit 121 gives an instruction for print processing.
In this case, the system control unit 121 instructs the image processing unit 117 to perform image processing. At this time, the system control unit 121 notifies the image processing unit 117 of the storage location of the print data described in the page description language.
As a result, the image processing unit 117 reads the print data described in the page description language stored in the temporary storage fixed area 115c of the RAM 115 and performs image processing (rasterization) on the print data. In addition, the image processing unit 117 temporarily stores the image-processed (rasterized) print data in, for example, the work area 115a shown in FIG. 2B.
When the image processing unit 117 performs image processing (rasterization), the system control unit 121 instructs the printer control unit 112 to perform print processing.
At this time, the printer control unit 112 controls the printing operation of the printer unit 102 based on the print data after the image processing (rasterization) stored in the work area 115a by the image processing unit 117.

(Step S106)
The system control unit 121 determines whether the printing process is completed.
In this case, the system control unit 121 determines that the printing process is not completed if there is no notification indicating the printing process from the printer control unit 112 (step S106: No).
On the other hand, the system control unit 121 determines that the print processing has been completed if a notification indicating the print processing is received from the printer control unit 112 (step S106: Yes), and proceeds to step S107.

(Step S107)
The system control unit 121 gives an instruction to release the temporary storage fixed area 115c.
In this case, the system control unit 121 causes the memory management unit 118 to erase the temporary storage fixed area 115c allocated in the temporary storage temporary area 115d of the work area 115a.
As a result, the temporary storage fixed area 115c in the work area 115a is released, so that the size reduction of the work area 115a can be avoided.

(Step S108)
The system control unit 121 determines whether the release of the temporary storage fixed area 115c is completed.
In this case, the system control unit 121 determines that the release of the temporary storage fixed area 115c has not been completed unless there is a notification from the memory management unit 118 indicating that the deletion of the temporary storage fixed area 115c has been completed (step S108). : No).
On the other hand, the system control unit 121 determines that the release of the temporary storage fixed area 115c has been completed if there is a notification from the memory management unit 118 indicating that the deletion of the temporary storage fixed area 115c has been completed (step S108). : Yes), and the process ends.

In step S102, the system control unit 121 calculates the data size of the print data described in the page description language stored in the temporary storage temporary area 115d of the work area 115a in FIG. In S103, the memory management unit 118 is instructed to allocate the temporary storage fixed area 115c, but the present invention is not limited to this example. That is, if the data size of the print data described in the page description language to be stored in the temporary storage temporary area 115d is known in advance, the system control unit 121 omits the process of step S102 and causes the memory management unit 118 to perform the processing. On the other hand, the allocation of the temporary storage fixed area 115c may be instructed. In this case, the print data described in the page description language can be stored in the temporary storage fixed area 115c allocated by the memory management unit 118.

As described above, in the present embodiment, the memory management unit 118 manages the work area 115a (image data storage area) of the RAM 115 (volatile memory), and prints from the user terminal to the work area 115a (image data storage area). A temporary storage fixed area 115c for storing a job, print data described in the page description language, or image data (image processing data) read by the scanner unit 101 is allocated, and the system control unit 121 causes the memory management unit 118 to Instructing allocation of the temporary storage fixed area 115c according to the print job from the user terminal, the print data described in the page description language, or the data size of the image data (image processing data) read by the scanner unit 101, After the processing related to the print job from the user terminal, the print data described in the page description language, or the image data (image processing data) read by the scanner unit 101 is completed, the memory management unit 118 temporarily stores the memory. An instruction is issued to release the area 115c.

As a result, the temporary storage fixed area 115c allocated according to the data size of the print job from the user terminal, the print data described in the page description language, or the image data (image processing data) read by the scanner unit 101 is displayed. Since the image processing data can be temporarily stored, a print job from the user terminal to the RAM 115 (volatile memory), print data described in the page description language, or image data read by the scanner unit 101 (image processing It is possible to eliminate the setting operation related to area allocation for temporary storage of (data). In addition, after the processing related to the print job from the user terminal, the print data described in the page description language, or the image data (image processing data) read by the scanner unit 101 is completed, the temporary storage fixed area is stored in the RAM 115 (volatile memory). Since it is released as the work area 115a (image data storage area) of the RAM memory, the work area 115a (image data storage area) of the RAM 115 (volatile memory) used in the arithmetic processing based on the processing of the application program related to the image processing. ) Size reduction can be suppressed.

100 MFP
101 scanner unit 102 printer unit 103 FAX unit 104 I/F
105 panel section 106 HDD
105A RAM disk ON/OFF setting screen 105B RAM disk size setting screen 105a to 105c selection field 110 control unit 111 scanner control unit 112 printer control unit 113 FAX control unit 114 communication control unit 115 RAM
115a Work area 115b System area 115c Temporary storage fixed area 115d Temporary storage temporary area 116 EEPROM
117 image processing unit 118 memory management unit 119 panel operation control unit 120 HDD control unit 121 system control unit 122 data bus

Claims (3)

Volatile memory,
A memory management unit that manages an image data storage area of the volatile memory and allocates a temporary storage fixed area for storing image processing data in the image data storage area;
The memory management unit is instructed to allocate the temporary storage fixed area according to the data size of the image processing data, and after the processing related to the image processing data is completed, And a system control unit for instructing the release of the fixed area ,
The memory management unit sets a temporary storage temporary area in the image data storage area of the volatile memory,
The temporary storage temporary area has a capacity threshold value set therein, is an area for storing the image processing data, and is an area that can be used in arithmetic processing based on processing of a program,
The system control unit calculates a data size of the image processing data stored in the temporary storage temporary area, and causes the memory management unit to perform the temporary storage according to the data size in the temporary storage temporary area. An image forming apparatus characterized by instructing allocation of a fixed area . Equipped with a panel,
When the data size of the image processing data exceeds the size of the temporary storage temporary area, the system control unit causes the panel unit to display an error and the image processing stored in the temporary storage temporary area. The image forming apparatus according to claim 1 , wherein data is deleted. Managing the image data storage area of the volatile memory by the memory management unit, and allocating a temporary storage fixed area for storing the image processing data in the image data storage area;
The system control unit instructs the memory management unit to allocate the temporary storage fixed area in accordance with the data size of the image processing data, and after the processing related to the image processing data is finished, On the other hand, the step of instructing the release of the temporary storage fixed area is executed by a computer controlling the image forming apparatus ,
The memory management unit sets a temporary storage temporary area in the image data storage area of the volatile memory,
The temporary storage temporary area has a capacity threshold value set therein, is an area for storing the image processing data, and is an area that can be used in arithmetic processing based on processing of a program,
The system control unit calculates a data size of the image processing data stored in the temporary storage temporary area, and causes the memory management unit to perform the temporary storage according to the data size in the temporary storage temporary area. An image forming program for instructing allocation of a fixed area .

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