JP2011037219A - Image processing apparatus, method for controlling image processing apparatus and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processing apparatus efficiently executing a judgement of PDL class of printing data on which compression processing is carried out, a method for controlling the image processing apparatus, and a computer program. <P>SOLUTION: The image processing apparatus 1 receives printing data and judges whether or not the printing data received are a compressed form. When the image processing apparatus 1 judges that the printing data are the compressed form, the kind of a page description language of the printing data is judged without applying decompression processing to the printing data. The image processing apparatus 1 acquires a file of the printing data for which the kind of the page description language is determined, and the acquired file is analyzed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image processing apparatus, an image processing apparatus control method, and a computer program.

An image processing apparatus such as a printer capable of interpreting and processing a plurality of types of PDL (Page Description Language) data has been proposed. Such an image processing apparatus determines the type of PDL (hereinafter referred to as PDL type) for the received print data, and performs print processing of the print data based on the determination result of the PDL type. The determination of the PDL type is a determination as to which PDL is used for the print data.
Japanese Patent Application Laid-Open No. 2004-228867 calculates syntax rule matching degrees for a plurality of types of PDLs for each command group in data of a predetermined size at the beginning of print data, and is used for print data based on the calculated syntax rule matching degrees. A printing apparatus for determining a PDL that is present is disclosed. That is, this printing apparatus develops print data in order from the top and determines the PDL type.

JP 2007-241758 A

In recent years, an XPS (XML Paper Specification) printing system based on XML (Extensible Markup Language) proposed by Microsoft Corporation is widely known. The XPS document is document data and has an aspect as print data. Therefore, it is conceivable to print an XPS document by directly transmitting it to an image processing apparatus such as a printer without using a printer driver.
As for the XPS document, usually, the files constituting the XPS document are collectively compressed in the ZIP format. Also, with respect to data described in a PPML (Personalized Print Markup Language) format, which is a printing language specialized for variable printing, it is common to compress a plurality of files together in a ZIP format. As information devices such as personal computers have improved performance, print data and document data are compressed as described above to reduce the capacity and reduce the network load.

Here, when print data compressed in the same format is directly transmitted to the image processing apparatus, it is difficult for the image processing apparatus to determine the PDL type based on the information of the first few bytes. Further, in order for the image processing apparatus to check the contents of the compressed print data, it is necessary to expand the print data file. Further, the print order of XPS documents and PPML documents is not always in a fixed order, so there is not always data used for determining the PDL type in the first file. For this reason, it takes time to determine the PDL type in the technology for determining the PDL type by developing the print data in order from the top.
An object of the present invention is to provide an image processing apparatus, a control method for an image processing apparatus, and a computer program that efficiently execute determination of the PDL type of compressed print data.

  An image processing apparatus according to an embodiment of the present invention determines a data reception unit that receives print data, whether the received print data is in a compressed format, and determines that the print data is in a compressed format. A page description language determining unit that determines a type of page description language of the print data without developing the print data, and a file acquisition unit that acquires a file of print data for which the type of page description language is determined Analyzing means for receiving and analyzing the file from the file acquisition means.

  According to the image processing apparatus of the present invention, it is possible to efficiently determine the PDL type of the compressed print data. As a result, the PDL type determination time can be shortened for this print data.

It is a figure which shows an example of the system configuration | structure of this embodiment. It is a figure which shows the example of the document determination information in a document determination information storage part. It is the file structure of a sequential process XPS document and a random process XPS document. It is a figure explaining PDL classification judgment processing by an image processing device. It is a figure which shows the example of the storage processing flow of file information, and the transmission processing flow with respect to the PDL analysis part of print data.

  FIG. 1 is a diagram illustrating an example of a system configuration of the present embodiment. FIG. 1A shows a configuration example of a system having an image processing apparatus of the present embodiment, and FIG. 1B shows an example of a functional block diagram of a control device provided in the image processing apparatus of the present embodiment. The image processing apparatus 1 shown in FIG. 1A receives print data, determines which page description language (PDL) is used in the received print data (determines the PDL type), and displays the PDL determination result. An information processing apparatus that executes print processing based on the information processing apparatus. The image processing apparatus 1 may be any printer among MFP (Multi Function Printer), SFP (Single Function Printer), and LBP (Laser Beam Printer). Further, the image processing apparatus 1 may be a printer using a printing method other than MFP, SFP, or LBP. The image processing apparatus 1 is connected to a host computer 2 that gives various instructions to the image processing apparatus 1 via a LAN (Local Area Network) 3 such as Ethernet (registered trademark).

  As shown in FIG. 1A, the image processing apparatus includes a control device 11, a printer device 12, an external media connection unit 13, an operation unit 14, and a storage device 15. The control device 11 controls the entire image processing device 1. The control device 11 receives the print data via the external media connection unit 13, the storage device 15, or the LAN 3, and determines the PDL type for the received print data. In addition, the control device 11 executes print control processing for print data based on the determination result of the PDL determination type. Specifically, the control device 11 instructs the printer device 12 to print out the print data.

  The control device 11 includes a CPU (Central Processing Unit) 111, a ROM (Read Only Memory) 112, and a RAM (Random Access Memory) 113 as hardware resources. The CPU 111 performs overall control of the entire image processing apparatus 1 based on a control program stored in the ROM 112 or other storage medium. The control program is a computer program that realizes the control method of the image processing apparatus of the present embodiment. The RAM 113 is storage means used as a work area for the CPU 111. The printer device 12 prints out the print data in accordance with an instruction from the control device 11. The external media connection unit 13 is a device that can input print data from an external media such as a USB (Universal Serial Bus) memory. The operation unit 14 displays / sets various functions and displays the status of the image processing apparatus. For this purpose, the operation unit 14 includes a liquid crystal panel. The storage device 15 stores / saves print data.

  As shown in FIG. 1B, the control device 11 includes a data reception unit 101, a PDL determination unit 102, a document determination information storage unit 103, a file information storage unit 104, a file acquisition unit 105, a PDL analysis unit 106, a print control. Part 107 is provided. The data receiving unit 101 functions as a data receiving unit that receives print data from the external media connection unit 13, the storage device 15, and the LAN 3. The PDL determination unit 102 functions as a page description language determination unit that determines the PDL type for the received print data. The PDL determination unit 102 determines whether the received print data is in a compressed format, and if it is determined that the print data is in a compressed format, the PDL used for the print data without performing the decompression process. The type of is determined. For example, the PDL determination unit 102 acquires the file name of the print data file determined to be in the compression format. The PDL determination unit 102 determines a PDL type corresponding to the acquired file name based on the acquired file name and the document determination information in the document determination information storage unit 103 (in the first storage unit). The determined type is determined as the PDL type of the print data. The document determination information is information including correspondence information between the PDL type and the file name. The PDL determination unit 102 further acquires address information of the file corresponding to the acquired file name, and stores correspondence information between the file name and address information in the file information storage unit 104 (in the second storage unit). Remember. The document determination information storage unit 103 functions as a first storage unit that stores document determination information in advance. The file information storage unit 104 functions as a second storage unit that stores correspondence information between the file name acquired by the PDL determination unit 102 and the address information. The file information storage unit 104 corresponds to the RAM 113 or the storage device 15 as hardware resources.

  The file acquisition unit 105 functions as a file acquisition unit that acquires a print data file whose PDL type has been determined by the PDL determination unit 102 and passes the acquired file to the PDL analysis unit 106. The file acquisition unit 105 acquires files in the order necessary for the analysis processing by the PDL analysis unit 106. For example, when the PDL type determined by the PDL determination unit 102 is a type corresponding to print data that can be sequentially processed, the file acquisition unit 105 sequentially expands the acquired print data file and performs the PDL analysis unit 106. To pass. The print data that can be sequentially processed is print data in which files are stored in the order of files necessary for processing by the PDL analysis unit 106. When the PDL type is a type corresponding to print data in which a file to be analyzed by the PDL analysis unit 106 is randomly stored and each file includes the file name of the next file to be analyzed The file acquisition unit 105 executes the following processing. The file acquisition unit 105 sequentially acquires the files to be analyzed based on the file name of the next file to be analyzed included in each file. Specifically, the file acquisition unit 105 sets the file name of the file to be analyzed next based on the file name of the file to be analyzed next and the correspondence information in the file information storage unit 104. Get the corresponding address information. Then, the file acquisition unit 105 accesses the file to be analyzed next based on the acquired address information. The PDL analysis unit 106 receives a file from the file acquisition unit 105 and analyzes it, that is, analyzes print data. The print control unit 107 transmits the print data analyzed by the PDL analysis unit 106 to the printer device 12, and prints out the print data.

  FIG. 2 is a diagram illustrating an example of document determination information in the document determination information storage unit. The document determination information includes, for example, information stored in a table in FIG. 2A (hereinafter referred to as a PDL type table) and information stored in a table illustrated in FIG. 2B (hereinafter referred to as a non-printable document table). including. In the PDL type table, correspondence information between PDL types and file names is stored in advance. In the example shown in FIG. 2A, the file names of the files included in the document are stored in association with the PPML document, which is the print data, the sequentially processed XPS document, and the random processed XPS document. In the example shown in FIG. 2A, the PPML document includes a ppml file as a definition file, and further includes document data to be referred to such as pdf. XPS documents (sequentially processed XPS documents and random processed XPS documents) are stored in [Content_Types]. xml and FixedDocumentSequence. Includes fdseq file. In particular, the sequentially processed XPS document is [Content_Types]. xml / ~. Includes a piece file called piece. The sequentially processed XPS document is an example of print data that can be sequentially processed as described above. The random processing XPS document is an example of print data in which files to be analyzed by the PDL analysis unit 106 are randomly stored, and each file includes the file name of the file to be analyzed next. is there.

  In the unprintable document table, correspondence information between documents that cannot be printed and the file names of files included in the documents is stored in advance. In the example shown in FIG. 2B, correspondence information between the PowerPoint document, the word document, and the Excel document and the file name of the file included in each document is stored in the non-printable document table. The PowerPoint document, Word document, and Excel document are PowerPoint, Word, and Excel documents created by Office 2007 (registered trademark) of Microsoft Corporation. For example, the PowerPoint document is [Content_Types]. Includes xml files and ppt / ~ files. The word document is [Content_Types]. Contains xml files and word / ~ files. The Excel document is [Content_Types]. Contains xml files and xl / ~ files.

  FIG. 3 is a diagram illustrating an example of the file structure of the sequentially processed XPS document and the random processed XPS document. FIG. 3A shows the file structure of the sequentially processed XPS document. In the sequentially processed XPS document, files are stored in the order of files necessary for processing by the PDL analysis unit 106. In the example shown in FIG. 3A, [Content_Types]. xml / [0]. [Content_Types] from the piece file. xml / [6]. Files up to the piece file are sequentially stored. Each file is processed in the order indicated by the dotted arrows in FIG.

  FIG. 3B shows the file structure of a randomly processed XPS document. In the random processing XPS document, files are stored at random, not in the order of files necessary for processing by the PDL analysis unit 106. The dotted arrows in FIG. 3B indicate the order in which the files of the randomly processed XPS document are processed. In the analysis processing of the random processing XPS document shown in FIG. 3B, first, a content file [Content_Types]. An xml file is required. Next, _rels /. rels file, FixedDocumentSequence. fdseq file, FixedDocument. It becomes an analysis processing target of the PDL analysis unit 106 in the order of the fdoc file. _Rels /. The rels file is a file that is the first starting point of file access. _Rels /. In the rels file, FixedDocumentSequence. The path (file name) of the fdseq file is described. FixedDocumentSequence. In the fdseq file, FixedDocument. The path (file name) of the fdoc file is described. FixedDocument. The fdoc file has document information. Also, FixedDocument. In the fdoc file, a path of FixedPage (1.fpage in FIG. 3B) including page information is described. One page of information is described in the FixedPage.

  FIG. 4 is a diagram for explaining PDL type determination processing by the image processing apparatus according to the present embodiment. FIG. 4A shows an example of a PDL type determination processing flow executed by the control device 11 included in the image processing device 1. First, the PDL determination unit 102 included in the control device 11 receives print data from the data reception unit 101, and determines the PDL type for this print data based on the extension indicated by the file name of the print data (step S1). In step S1, when the PDL type can be determined based on the extension, the PDL determination unit 102 determines the PDL type and ends the process. For example, the print data file name is XXX. If it is XPS, it can be determined that the print data is an XPS document based on the extension, so the PDL determination unit 102 determines that the print data is an XPS document. On the other hand, if the PDL determination unit 102 cannot determine the PDL type based on the extension, the process proceeds to step S2. For example, if the print data file name is YYY. When the print data file is a ZIP format file as in the case of zip, it cannot be determined whether the print data is an XPS document, a PPML document, or another document. .

  Next, the PDL determination unit 102 determines whether the print data is in a compressed format (step S2). For example, when the first 4 bytes of the print data is “0x504B0304”, the PDL determination unit 102 determines that the print data is data that has been compressed in the ZIP format, that is, the compression format. If the PDL determination unit 102 determines that the print data is in a compressed format, the process proceeds to step S3. If the PDL determination unit 102 determines that the print data is not in a compressed format, the PDL determination unit 102 performs a conventional PDL type determination process (step S8). In the conventional PDL type determination process in step S8, the PDL determination unit 102 analyzes the contents of the print data from the top of the print data, and determines the PDL type based on the analysis result. In step S3, the PDL determination unit 102 acquires file names in order from the first file included in the print data (step S3). Specifically, the PDL determination unit 102 analyzes the header added to the file and determines whether the file name can be acquired. If the PDL determination unit 102 determines that the file name cannot be acquired, the process proceeds to step S9. When the PDL determination unit 102 determines that the file name can be acquired, the PDL determination unit 102 acquires the file name and proceeds to step S4.

  The process in step S3 will be described below by taking as an example the case where the print data file determined to be in the compression format is a print data file compressed in the ZIP format (hereinafter referred to as a ZIP file). FIG. 4B is a diagram illustrating a configuration example of a ZIP file. In the example shown in FIG. 4B, the ZIP file includes compressed data corresponding to each of the files 1 to n. A header is added before the compressed data corresponding to each file. A ZIP header including a list of file names included in the ZIP file is added to the tail of the ZIP file. The header added before each compressed data includes information such as the file name of the corresponding file, the file size after decompression, and the size of the compressed data. Therefore, for example, the PDL determination unit 102 can acquire the file name of each file by analyzing the header of each file included in the ZIP file without expanding the ZIP file.

  In step S4, the PDL determination unit 102 determines the PDL type of the print data based on the file name acquired in step S3 (step S4). Specifically, the PDL determination unit 102 determines whether there is a document of the PDL type corresponding to the acquired file name in the PDL type table shown in FIG. 2A, and prints based on the determination result. It is determined whether the PDL type of data can be determined. If the PDL determination unit 102 determines that there is a PDL type document corresponding to the acquired file name in the PDL type table, the PDL type corresponding to this document is determined to be the PDL type of the print data, The PDL type determination process ends. After the PDL type determination process ends, the PDL determination unit 102 transmits the print data and the PDL type determination process result for the print data to the file acquisition unit 105. Then, based on the transmitted PDL type determination processing result, the file acquisition unit 105 develops print data files in order from the files necessary for analysis, and transmits them to the PDL analysis unit 106. If the PDL determination unit 102 determines that there is no PDL type document corresponding to the acquired file name in the PDL type table, the process proceeds to step S5.

  In step S5, the PDL determination unit 102 determines whether the document corresponding to the file name acquired in step S3 is in the unprintable document table shown in FIG. 2B (step S5). If the PDL determination unit 102 determines that the document corresponding to the file name is not in the unprintable document table, the process returns to step S3. If the PDL determination unit 102 determines that the document corresponding to the file name is in the non-printable document table, the PDL determination unit 102 acquires the document information of this document, and proceeds to step S6. This document information includes, for example, a file name, the name of the application that created the document, and the like. Next, the PDL determination unit 102 displays the document information of the acquired document on the liquid crystal panel of the operation unit 14 (step S6). In step S6, the PDL determination unit 102 may display the document information on the liquid crystal panel and display an error indicating that the print data cannot be printed. Then, the PDL determination unit 102 cancels the printing process (step S7) and ends the process.

  If the PDL determination unit 102 determines in step S3 that the file name cannot be acquired, the PDL determination unit 102 expands the specific or arbitrary file included in the print data (step S9), and the contents of the print data Take out. Then, the PDL determination unit 102 analyzes the contents of the extracted print data and determines the PDL type. Specifically, the PDL determination unit 102 determines the PDL type based on the file name information of the expanded file and the command information included in the contents of the print data (step S10). If the PDL determination unit 102 determines that the print data is not printable print data and cannot determine the PDL type, the print processing is cancelled. According to the PDL type determination process described with reference to FIG. 4, it is possible to determine the PDL type based on the file name without expanding the print data compressed in the compression format as much as possible. As a result, it is possible to quickly determine the PDL type of different PDL data stored in the same compression format.

FIG. 5 is a diagram illustrating an example of a file information storage processing flow by the PDL determination unit and an example of a transmission processing flow of the print data for which the PDL type has been determined, to the PDL analysis unit. FIG. 5A shows an example of a storage processing flow of file information. The file information storage process in this example is performed in parallel with the PDL type determination process described with reference to FIG. The file information storage process in this example is executed when the print data is determined to be an XPS document in the PDL type determination process in step S4 of FIG.
First, the PDL determination unit 102 acquires file information in order from the first file included in the print data (step S21). The file information is, for example, correspondence information between a file name and file address information. The file address information is information on the head address where each file is stored. In the example of the ZIP file shown in FIG. 4B, the header address information added to the compressed data of each file included in the ZIP file is the file address information. When the PDL determination unit 102 analyzes the header in the file name acquisition process in step S3 of FIG. 4A, the PDL determination unit 102 acquires the size of the header and the size of the compressed data that follows the header. The PDL determination unit 102 obtains address information of each file based on the acquired header size and compressed data size information.

  Subsequently, the PDL determination unit 102 stores the file information acquired in step S21 in the file storage unit 104 (step S22). If the PDL determination unit 102 determines that the file information is stored for the final file included in the print data, the process ends. If the PDL determination unit 102 determines that the file information is not stored for the final file included in the print data, the process returns to step S21. The file information stored in the file information storage process described above with reference to FIG. 5A is used when the file acquisition unit 105 accesses a necessary file in step S36 of FIG. 5B described later. That is, by acquiring and storing file information in parallel with the PDL type determination process, it is possible to directly access the file using the stored file information in the process following the PDL type determination process. Become.

FIG. 5B shows an example of a transmission processing flow for the PDL analysis unit of the print data for which the PDL type is determined. In this example, a process will be described in a case where it is determined that the print data is an XPS document in the PDL type determination process in step S4 of FIG.
In the processing flow shown in FIG. 5B, the file acquisition unit 105 performs processing according to whether the print data received from the PDL determination unit 102 is a sequential processing XPS document or a random processing XPS document. Switch. First, the file acquisition unit 105 determines whether the print data received from the PDL determination unit 102 is a sequentially processed XPS document (step S31). When the file acquisition unit 105 determines that the print data is a sequentially processed XPS document, the file acquisition unit 105 sequentially develops the first file of the print data from the first file and transmits it to the PDL analysis unit 106 (step S32).

  If the file acquisition unit 105 determines that the print data received from the PDL determination unit 102 is not a sequentially processed XPS document but a random processed XPS document, the process proceeds to step S33. In step S33, the file acquisition unit 105 acquires a file name of a file necessary for the analysis process by the PDL analysis unit 106 (step S33). In the example of the random processing XPS document shown in FIG. 3B, the file acquisition unit 105 uses the _rels /. The data of the rels file is transmitted to the PDL analysis unit 106, the file is analyzed, and the analysis result is received. This analysis result includes FixedDocumentSequence. The path (file name) of the fdseq file is described. Therefore, the file acquisition unit 105 uses FixedDocumentSequence. fdseq is acquired as the file name of the file that needs to be processed next. In this way, the file acquisition unit 105 can cause the PDL analysis unit 106 to analyze the random processing XPS document and acquire the file name of the next necessary file based on the analysis result.

  Next, the file acquisition unit 105 refers to the file information in the file information storage unit 104 and determines whether the file name acquired in step S23 is stored in the file information storage unit 104 (step S34). If the file acquisition unit 105 determines that the file name is not stored in the file information storage unit 104, the process proceeds to step S35. The file acquisition unit 105 waits for processing until the file name acquired in step S33 is stored in the file information storage processing 104 (step S35). When the file acquisition unit 105 determines that the file name is stored in the file information storage unit 104, the file acquisition unit 105 determines the address of the file corresponding to the file name based on the file information in the file information storage unit 104. Get information. Based on the acquired address information, the file acquisition unit 105 accesses the necessary file to acquire the file, expands the acquired file, and transmits it to the PDL analysis unit 106 (step S36). For example, the file acquisition unit 105 uses FixedDocumentSequence. The fdseq file is transmitted to the PDL analysis unit 106. The PDL analysis unit 106 transmits the FixedDocumentSequence. The fdseq file is analyzed, and FixedDocument.txt described in the file is analyzed. Get the path (file name) of the fdoc file. FixedDocument. The fdoc file is a FixedDocumentSequence. This file needs to be analyzed after the fdseq file.

  Subsequently, the file acquisition unit 105 determines whether there is a file necessary for the analysis processing by the PDL analysis unit 106 (step S37). If the file acquisition unit 105 determines that there is no file required for the analysis process, the process ends. If the file acquisition unit 105 determines that there is a file necessary for the analysis process, the process returns to step S33. In this process, the file acquisition unit 105, for example, uses the FixedDocument.acquired by the PDL analysis unit 106. Get the path (file name) of the fdoc file. As a result of the processing in steps S33 to S37 described above, the files included in the random processing XPS document are expanded in the order in which processing is necessary. As a result, the spool data area can be used efficiently.

  According to the processing described above with reference to FIG. 5B, when the print data is a sequentially processed XPS document, the file acquisition unit 105 immediately analyzes the PDL analysis from the first file of the print data after the determination of the PDL type is completed. The print data can be transmitted to the unit 106. As a result, the PDL analysis process can be performed quickly. In addition, when the print data is a random processing XPS document, the file acquisition unit 105 performs this processing based on the file information stored in the file information storage unit 104 and the file name of the file necessary for the analysis process. Quick access to files.

(Other examples)
The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed. In this case, the program and the storage medium storing the program constitute the present invention.

1 Image processing device 2 Host computer 3 LAN

Claims (8)

Data receiving means for receiving print data;
It is determined whether the received print data is in a compressed format, and when it is determined that the print data is in a compressed format, the type of page description language of the print data is determined without decompressing the print data Page description language determination means;
File acquisition means for acquiring a file of print data for which the type of the page description language is determined;
An image processing apparatus comprising: an analysis unit that receives and analyzes the file from the file acquisition unit. First storage means in which correspondence information between a page description language type and a file name is stored in advance;
The page description language determination unit acquires a file name of a print data file determined to be in the compression format, and acquires the file name based on the acquired file name and correspondence information in the first storage unit The image processing apparatus according to claim 1, further comprising: determining a page description language type corresponding to the file name and determining the determined type as a page description language type of the print data. The file acquisition unit sequentially expands the acquired print data file when the type of the page description language determined by the page description language determination unit is a type corresponding to print data that can be sequentially processed. The image processing apparatus according to claim 2, wherein the image processing apparatus is passed to an analysis unit. In the file acquisition means, the type of the determined page description language is stored randomly as a file to be analyzed by the analyzing means, and each file includes the file name of the file to be analyzed next The file to be analyzed is sequentially acquired based on the file name of the next file to be analyzed included in each file when the type corresponds to the print data being recorded. The image processing apparatus according to claim 2. The page description language determination unit further acquires address information of a file corresponding to the acquired file name, and stores correspondence information between the file name and address information in a second storage unit,
The file acquisition unit includes the file name of the next file to be analyzed and the corresponding information in the second storage unit, and is included in each file to be analyzed. 5. The address information corresponding to the file name of the file to be analyzed is acquired, and the file to be analyzed next is accessed based on the acquired address information. Image processing device. 6. The page description language determination unit analyzes a header of a file of print data determined to be in the compression format, and acquires a file name of the file based on the analysis result. An image processing apparatus according to any one of the above. Receiving print data; and
It is determined whether the received print data is in a compressed format, and when it is determined that the print data is in a compressed format, the type of page description language of the print data is determined without decompressing the print data Process,
Obtaining a print data file for which the type of the page description language is determined;
And a step of analyzing the acquired file. A method for controlling an image processing apparatus.   A computer program for causing a computer to execute the control method of the image processing apparatus according to claim 7.

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