JP2008001076A - Imaging device, method for controlling imaging device, program and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To determine that a substitution process by a filter program is applied to printing job data. <P>SOLUTION: It is determined whether data to be subjected to the substitution process, are included in the entered printing job data. Then according to the determination results, the updating of identification information for determining the application of the substitution process to the printing job data is controlled. In the case where the information is updated, the application of the substitution process to the printing job data is reported. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image forming technique.

  Conventionally, the software of an image forming apparatus has been mainly constructed as so-called firmware that is static and fixed on a real-time operating system (OS). Such firmware is stored in the non-volatile memory of the apparatus in a state where it is statically linked to a single load module even when it is internally composed of a plurality of modules. The firmware is loaded into a RAM from a nonvolatile memory such as a hard disk and executed when the system is started, or directly executed on a nonvolatile memory such as a ROM.

A PDL filter unit that performs preprocessing before interpretation on the PDL data stream received by the image forming apparatus is implemented as flexible and expandable software. Patent Document 1 discloses the contents of customizing the image forming apparatus by adopting a configuration that is clearly separated from the mounting of printer firmware and other parts that require stability.
Japanese Patent Application No. 2004-093215

  The above-described conventional PDL filter responds to the market needs for making it possible to customize the print output by the PDL command replacement technology and easily realizing the customization of the print policy in the office. As an example, it is possible to force printing to double-sided printing or N-UP printing such as 2 in 1 when the number of prints increases.

  However, there is a problem that it cannot be distinguished from print output whether the print output is customized by the PDL command replacement technique or by the printer driver setting at the time of the user's print operation.

  SUMMARY An advantage of some aspects of the invention is that it provides an image forming technique that makes it possible to identify that replacement processing by a filter program has been performed on print job data.

In order to achieve the above object, an image forming apparatus according to the present invention includes a determination unit that determines whether input print job data includes data to be replaced.
A process detection unit that controls updating of identification information for identifying that the replacement process has been performed on the print job data in accordance with the determination of the determination unit;
And a notification control unit for notifying that the replacement process has been performed on the print job data when the identification information is updated by the process detection unit.

Alternatively, in order to achieve the above object, a method for controlling an image forming apparatus according to the present invention includes a determination step of determining whether input print job data includes data to be replaced,
A process detection step for controlling update of identification information for identifying that the replacement process has been performed on the print job data in accordance with the determination in the determination step;
And a notification control step of notifying that the replacement processing has been performed on the print job data when the identification information is updated by the processing detection step.

  According to the present invention, it is possible to identify that replacement processing by a filter program has been performed on print job data.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the constituent elements described in this embodiment are merely examples, and are not intended to limit the scope of the present invention only to them.

(First embodiment)
FIG. 1 is a block diagram illustrating a configuration of an image forming apparatus 100 according to an embodiment of the present invention. The control unit 102 controls the operation of the image forming apparatus 100 as a whole, and includes a memory 110 that functions as a work area and a CPU 111 that controls execution of the control. The operation panel 103 can receive various operations and settings for the image forming apparatus 100, and can further function as an interface for notifying the operator of processing results related to image formation. An operator can instruct the operation mode and various settings of the image forming apparatus 100 via the operation panel 103. In the embodiment of the present invention, it is also possible to display processing based on the filter effect.

  The host interface controller 104 is connected to the host computer 200 via a network 300 such as Ethernet (registered trademark), and can transmit and receive data to and from the host computer 200. The print job data received by the host interface controller 104 is transferred to the filter unit 105. In the embodiment of the present invention, the filter unit 105 can function as a component that executes a characteristic replacement process. The filter unit 105 performs data replacement processing (also referred to as filter processing) on the received page description language (PDL) format print job data by a method such as specific data pattern matching. The filter unit 105 can be configured by connecting a plurality of filters (filter programs) so that a plurality of data can be replaced. The print job data in the PDL format that has been replaced by the filter unit 105 is transferred to the translator 106. A detailed description of the filter unit 105 will be described later with reference to FIG.

  The translator 106 interprets the print job data in the PDL format that has been subjected to the replacement process by the filter program of the filter unit 105, and converts the print job data into a description in an intermediate language for printing suitable for the rendering process. A description of print data in an intermediate language for printing suitable for rendering processing is called a “display list”. The translator 106 has a unique implementation different for each of various PDL specifications, and any translator can convert each PDL into a display list unique to the display list generation unit.

  The display list converted by the translator 106 is transferred to a display list generation unit (hereinafter also referred to as “renderer”) 107. The renderer 107 expands the display list into a raster image and stores it in the expansion memory 108. The development memory 108 is a storage area that can be used as a memory for storing the raster image developed by the renderer 107. The printer engine 109 can form a visible image on recording paper or the like based on the developed raster image. Each of these elements is connected by an internal main bus 101 and can transmit and receive data to and from each other.

(Configuration of filter unit 105)
FIG. 2 is a block diagram showing a specific configuration of the filter unit 105. As described above, the filter unit 105 has a configuration capable of connecting one or more filter programs. In FIG. 2, a configuration in which three filters (filter programs 1110 to 1112) are connected is illustrated as an example of connection of filter programs, but the gist of the present invention is not limited to this example. The number of filter programs connected is not limited to this example, and any number of filter programs can be connected to form the filter unit 105.

  The filter bus interface (IF) 1000 can transmit and receive data to and from other components of the image forming apparatus 100 via the internal main bus 101.

  The filter unit 105 receives print job data in PDL format received by the host interface controller 104 via the filter bus IF 1000. The filter unit 105 performs filtering processing (replacement processing by a filter program) on the received print job data in the PDL format, and outputs the filtered PDL format print job data to the translator 106 via the filter bus IF1000.

  The filter processing unit 1100 has a configuration in which a plurality of filter programs (1110, 1111, 1112) are registered (linked). Each filter program can perform data replacement processing (filter processing) on the input print job data in the PDL format by a method such as specific data pattern matching. The processing inside the filter (filter program) will be described later with reference to flowcharts (FIGS. 7 and 8).

  The filter setting holding unit 1200 holds filter setting information indicating whether each filter program is valid or invalid. Here, the state in which the filter program is valid is a state in which the data portion to be replaced is detected from the input print job data by specific data pattern matching or the like, and replacement processing based on the detection result can be executed. It means that there is. If all the filter programs are invalidated based on the setting of the filter setting holding unit 1200, data pattern matching is not performed and print job data in PDL format in which the replacement process is not executed is output to the translator 106.

  The filter processing detection flag unit 1201 holds flag information that can identify whether or not replacement processing has been performed in the filter program. For example, when the filter program (1110, 1111, 1112) executes the replacement process, the filter program notifies the filter process detection flag unit 1201. Based on the notification, the filter processing detection flag unit 1201 updates the held flag information. For example, when the initial value “false” is set in the filter process detection flag unit 1201 prior to the replacement process, the filter process detection flag unit 1201 updates the flag information to “true” in accordance with the notification from the filter program. The filter processing detection flag unit 1201 notifies the filter effect message output unit 1300 that the flag information has been updated to “true”.

  Based on the notification from the filter processing detection flag unit 1201, the filter effect message output unit 1300 generates a message for notifying the operation panel 103 that the replacement process has been performed by the filter program.

  The filter effect message output unit 1300 can generate an individual message corresponding to each replacement process of the filter program (1100, 1111, 1112).

  Based on the message generated by the filter effect message output unit 1300, the control unit 102 can cause the operation panel 103 to display a message for notifying that the replacement process has been performed by the filter program. Based on this message, the general user can identify what replacement processing has been performed on the print job data.

  FIG. 3 is a diagram for explaining the setting procedure of the filter setting holding unit 1200, and the setting screen 301 in FIG. 3 is displayed on the operation panel 103 under the control of the control unit 102. A list display 401 shows a list of filter programs (hereinafter also simply referred to as “filters”) installed in the image forming apparatus 100. The list display 401 exemplifies a state where six types of filters (filter programs) from filter A to filter F are installed. The list display 401 can be scrolled by operating the buttons (403, 404) on the screen 301. An arrow 402 indicates a filter program to be set. In FIG. 3, the filter B indicated by the arrow 402 is a target for setting to be valid or invalid.

  When the valid / invalid button 405 is pressed, the filter (filter program) indicated by the arrow 402 is set in the filter setting holding unit 1200 as a valid filter program. If the valid / invalid button 405 is pressed again while the display of the list display 410 is set to “valid”, the setting of the filter program indicated by the arrow 402 is invalidated. Here, the filter program set to be valid is registered in the filter processing unit 1100 in FIG.

  4 to 6 are diagrams for explaining a replacement process (effect of filter process) by the filter program. FIG. 4 is a diagram illustrating an example of image formation when there is no notification that the replacement processing by the filter program has been performed on the print job data. In this example, the print policy set by the administrator of the image forming apparatus 100 is 2in1 (printing that combines data of two pages into one page). The 2-in-1 filter program is installed in the image forming apparatus 100, and the 2-in-1 filter program is set to a valid state (ON). In this state, when the general user transmits print job data from the host computer 200, the 2-page data (400, 401) is combined into one page (402) and printed out by the 2-in-1 filter processing. In this case, it is impossible to determine whether or not the replacement processing by the filter program has been performed from the print output (402).

  When the general user does not recognize the effective filter program (2-in-1 filter program) set in the image forming apparatus 100, it is determined that the output is different from the 2-page output corresponding to the intended print job data (400, 401). .

  On the other hand, FIG. 5 is a diagram illustrating an example of image formation when the result of the replacement process by the filter program is notified to the general user via the display of the operation unit 103. As in the case of FIG. 4, the print policy set by the administrator of the image forming apparatus 100 is 2 in 1. The 2-in-1 filter program is installed in the image forming apparatus 100, and the 2-in-1 filter program is set to a valid state (ON).

  When a general user transmits print job data composed of two pages (500, 501) from the host computer 200 to the image forming apparatus 100, the filter unit 105 performs 2-in-1 replacement processing (filter processing) by a filter program. The 2-page data (500, 501) is combined into one page (502) and printed out by the replacement process of the 2-in-1 filter. When the filter process is executed, a message “filter process: 2 in 1” is displayed on the operation panel 103 under the display control of the control unit 102.

  The general user can recognize from the message display displayed on the operation panel 103 that the 2-in-1 replacement process has been executed by an effective filter program set in the image forming apparatus 100.

  FIG. 6 is a diagram exemplifying processing when print job data input with the configuration shown in FIG. 5 is not 2-page data but 2-in-1 data.

  When the image forming apparatus 100 receives the print job data set with 2in1 transmitted from the host computer 200, the 2in1 replacement process (filter process) by the filter program is not executed. In this case, since the filter process is not performed in the image forming apparatus 100, a message for notifying that the filter process has been executed is not displayed on the operation panel 103. A display indicating the “printable” state displayed at the end of the normal printing process is displayed on the operation panel 103.

  Next, the flow of processing of the filter program will be described with reference to the flowchart of FIG. The flowchart in FIG. 7 describes the internal processing of the filter program (1110, 1111, 1112) described in FIG. 2, and is executed under the overall control of the control unit 102.

  The image forming apparatus 100 receives print job data in PDL format (which is also referred to as “input stream”) that can be analyzed, and sequentially performs pattern matching. Data is replaced by a predetermined method (for example, a method including page layout and data attribute conversion), and output data (also referred to as “output stream”) is formed and output.

  The feature of this processing is that the flag information of the filter processing detection flag unit 1201 is updated when the filter program replacement processing is executed, and it is possible to identify that the replacement processing has been performed on the print job data based on the update of the flag information. Is to do.

  In step S700, the filter program based on the control of the control unit 102 performs necessary preprocessing. The preprocessing includes, for example, initialization of attributes used internally by the filter and preprocessing for a pattern description used for pattern matching.

  In step S701, based on the control of the control unit 102, the filter program reads an amount of data necessary for the pattern matching process from the input print job.

  In step S702, the filter program determines whether the setting of the filter program is valid (ON) based on the control of the control unit 102. If the filter program is valid (S702-Yes), the process proceeds to step S703. On the other hand, if it is determined in step S702 that the filter program setting is not valid (S702-No), the process proceeds to step S707.

  In step S703, based on the control of the control unit 102, the filter program performs pattern matching to detect data (data pattern) to be replaced by the filter program from the input print job data.

  As a data pattern to be replaced by the filter program, for example, a specific data string itself included in the data pattern may be collated, or a description in a formal language such as a regular expression may be used. As a description in a formal language, for example, it is possible to specify a search target and a search range by combining a character string and a symbol having a special meaning called a metacharacter. If a regular expression is used, a feature (pattern) included in a data pattern can be specified, so that it is possible to detect a pattern that absorbs the fluctuation of the notation compared to a case where a character string is directly specified. As various implementations for detecting data matching the pattern description, for example, commands such as grep, sed, AWK, Perl, and script environments can be used.

  In step S <b> 704, the filter program determines the result of pattern matching based on the control of the control unit 102. If data matching the pattern description is detected from the print job data (S704-Yes), the process proceeds to step S705.

  For example, when the 2-in-1 filter program is set to be valid, if 2-page data other than 2-in-1 (500, 501 in FIG. 5) is detected by pattern matching, the process proceeds to step S705.

  On the other hand, if it is determined in step S704 that the filter program cannot detect data matching the pattern description from the print job data (S704-No), the process proceeds to step S707.

  In step S <b> 705, the filter program based on the control of the control unit 102 notifies the filter processing detection flag unit 1201 that the replacement process is performed on the data that matches the pattern description. Upon receiving notification from the filter program, the filter processing detection flag unit 1201 (FIG. 2) updates the flag information from “false” set as the initial value to “true”. Based on the flag information (“false” or “true”) held by the filter processing detection flag unit 1201, it is possible to identify whether or not replacement processing has been performed in the filter program. The update of the flag information is notified from the filter processing detection flag unit 1201 to the filter effect message output unit 1300. Upon receiving such notification, the filter effect message output unit 1300 generates a message for notifying that the replacement process has been performed by the filter program. When each filter program (1100, 1111, 1112) executes the replacement process, the filter effect message output unit 1300 generates an individual message corresponding to each replacement process. Then, based on the message generated by the filter effect message output unit 1300, the control unit 102 causes the operation panel 103 to display a message for notifying that the replacement process has been performed by the filter program.

  In step S706, the filter program executes a replacement process corresponding to the purpose of the filter program for the data portion that matches the pattern description.

  In step S707, the filter program converts the processed data (including data that does not match the pattern and data that has undergone replacement processing that matches the pattern) into output data as print job data in PDL format. Write.

  When the filter program is not set to be valid (S707-No), when data matching the pattern is not detected (S703-No), the input print job data is written to the output data. In this case, since the flag information is not updated, the identification display for notifying the replacement process is not displayed on the operation panel 103.

  The case where data matching the pattern is not detected corresponds to the case where the page layout executed by the filter program matches the page layout of the input print job data (FIG. 6), for example.

  In step S708, the filter program determines whether all the processes for the input print job data have been completed. If all the processes for the print job data have been completed, the filter program ends the process. On the other hand, if it is determined in step S708 that all processing of the print job data has not been completed (No in S708), the process returns to step S701, and the same process is repeated.

  According to this process, when the filter program executes the replacement process, the filter process detection flag unit 1201 updates the flag information from “false” to “true”. Based on the update of the flag information, the filter effect message output unit 1300 generates a message for notifying that the replacement process has been performed by the filter program. Such a message is displayed on the operation panel 103 under display control of the control unit 102. The message display makes it possible for the user to identify that the replacement processing by the filter program has been performed on the print job data.

  Next, the flow of processing from reception to output of print job data in the image forming apparatus 100 will be described with reference to the flowchart of FIG. This procedure is an internal process in the image forming apparatus 100 corresponding to the printing procedure of the general user described with reference to FIGS. This process is executed under the control of the control unit 102.

  Print job data created by the host computer 200 is transmitted to the image forming apparatus 100 via the network 300.

  In step S800, when the image forming apparatus 100 receives print job data, the process proceeds to step S801. The print job data includes PDL format print job data.

  In step S801, the control unit 102 initializes the flag information held by the filter processing detection flag unit 1201 to “false”, and the process proceeds to step S802.

  In step S802, the control unit 102 inputs the received print job data in the PDL format to the filter unit 105, and controls execution of replacement processing by the filter program. The replacement process described with reference to FIG. 7 is executed by executing the filter program. This replacement process is based on the pattern matching process of the filter program. When data matching the pattern is included in the print job data, the filter program determines to execute the replacement process. The result of executing this replacement processing is notified from the filter program to the filter processing detection flag unit 1201. The filter processing detection flag unit 1201 updates the flag information based on the notification from the filter program.

  In step S803, the control unit 102 determines whether the flag information held by the filter processing detection flag unit 1201 is “false” or “true”. If the flag information is “false” (S803-No), the process proceeds to step S805, and the received print job data is printed out without being replaced. In this case, since the replacement process by the filter program is not performed on the print job data, a message for notifying that the replacement process has been performed is not displayed on the operation unit 103.

  On the other hand, if the flag information is “true” in the determination in step S803, the control unit 102 causes the operation unit 103 to display a message for notifying that the replacement process generated by the filter effect message output unit 1300 has been performed. . In step S805, the printing process is executed based on the output data subjected to the replacement process (step S709 in FIG. 7), and the process ends.

  According to the present embodiment, it is possible to identify that the replacement processing by the filter program has been performed on the print job data.

(Second Embodiment)
In the first embodiment, the configuration in which the replacement process is performed on the print job data is displayed on the operation panel 103 to notify the general user that the replacement process has been executed has been described. In the present embodiment, a configuration in which notification is performed by directly printing on a recording sheet a message for identifying that replacement processing has been performed on print job data will be described as a notification mode.

  FIG. 9 is a diagram showing an example in which a message for identifying that the replacement process by the filter program has been applied to the print job data is notified by directly printing on a recording sheet. As in the case of FIG. 5, the print policy set by the administrator of the image forming apparatus 100 is 2in1. The 2-in-1 filter program is installed in the image forming apparatus 100, and the 2-in-1 filter program is set to a valid state (ON).

  When a general user transmits print job data composed of two pages (900, 901) from the host computer 200 to the image forming apparatus 100, the filter unit 105 performs 2-in-1 replacement processing by a filter program. The 2-page data (900, 901) is combined into one page (902 or 903) and printed out by the replacement process of the 2-in-1 filter program. When the replacement process by the filter program is executed, the description “filter processing: 2 in 1” is added to the recording paper under the print control of the control unit 102.

  902 in FIG. 9 is a diagram showing an example in which the description “filter processing: 2 in 1” is added to the lower right portion of the recording paper printed out in 2 in 1. FIG. Further, reference numeral 903 in FIG. 9 is a diagram showing an example in which the description “filter processing: 2 in 1” is added to the back side of the recording paper printed and output in 2 in 1. FIG.

  FIG. 10 is a block diagram illustrating a specific configuration of the filter unit 105 according to the second embodiment. As described above, the filter unit 105 has a configuration capable of connecting one or more filter programs. The same reference numerals are assigned to the same configurations as those in FIG. 2 in the first embodiment, and the description of the components with the same reference numbers is omitted to avoid redundant description.

  When the initial value “false” is set in the filter processing detection flag unit 1201 prior to the replacement processing, the filter processing detection flag unit 1201 updates the flag information to “true” in accordance with the notification from the filter program. The filter processing detection flag unit 1201 notifies the filter effect adding unit 1400 that the flag information has been updated to “true”.

  Based on the notification from the filter processing detection flag unit 1201, the filter effect adding unit 1400 generates message data for adding a description clearly indicating that the replacement process has been performed by the filter program to the print output.

  Then, the filter effect adding unit 1400 adds the generated message data to the output data subjected to the replacement process by the filter program (this data is also referred to as “output data with message”). The output data with message is output to the translator 106 via the filter bus IF 1000 and the internal main bus 101. The output data with a message is processed by the image forming unit (translator 106, renderer 107, development memory 108, printer engine 109). The control unit 102 adds a message (description) that can identify that the replacement process has been performed to the print output of the print job data (output data) that has been subjected to the replacement process, and causes the image forming unit to print out the message. It is possible.

  As a modification of the first and second embodiments, the filter unit 105 can also be realized by a configuration (FIG. 11) in which a filter effect message output unit 1300 and a filter effect addition unit 1400 are combined. In this case, the message display is displayed on the operation panel 103, and the message (description) is printed on the print output.

  The process of this embodiment corresponds to the process of step S804 of FIG. 8 described in the first embodiment, and prints a description that makes it possible to identify that a replacement process has been performed instead of the display on the operation panel 103. Append to output.

  According to the present embodiment, it is possible to identify that the replacement processing by the filter program has been performed on the print job data.

(Other embodiments)
Needless to say, the object of the present invention can also be achieved by supplying a storage medium storing software program codes for realizing the functions of the above-described embodiments to a system or apparatus. Needless to say, this can also be achieved by the computer (or CPU or MPU) of the system or apparatus reading and executing the program code stored in the storage medium.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a nonvolatile memory card, a ROM, or the like can be used.

  Further, the functions of the above-described embodiment are realized by executing the program code read by the computer. In addition, an OS (operating system) running on a computer performs part or all of actual processing based on an instruction of a program code, and the above-described embodiment is realized by the processing. Needless to say.

1 is a block diagram illustrating a configuration of an image forming apparatus according to an embodiment of the present invention. It is a block diagram which shows the specific structure of the filter part concerning 1st Embodiment of this invention. It is a figure explaining the setting procedure of the filter setting holding | maintenance part 1200 concerning embodiment of this invention. It is a figure explaining the replacement process by a filter program. It is a figure explaining the replacement process by the filter program concerning 1st Embodiment of this invention. It is a figure explaining the replacement process by the filter program concerning 1st Embodiment of this invention. It is a figure explaining the flow of processing of the filter program concerning a 1st embodiment of the present invention. FIG. 6 is a diagram illustrating a processing flow from reception to output of print job data in the image forming apparatus according to the embodiment of the present invention. It is a figure which shows the example which alert | reports by printing on the recording paper directly the message for identifying that the substitution process by the filter program concerning 2nd Embodiment of this invention was performed to print job data. It is a block diagram which shows the specific structure of the filter part concerning 2nd Embodiment. It is a figure which shows the modification of the filter part concerning 1st and 2nd embodiment.

Claims (14)

Determining means for determining whether the input print job data includes data to be replaced;
A process detection unit that controls updating of identification information for identifying that the replacement process has been performed on the print job data in accordance with the determination of the determination unit;
An image forming apparatus comprising: notification control means for notifying that the replacement process has been performed on the print job data when the identification information is updated by the process detection means.   The image forming apparatus according to claim 1, wherein the determination unit detects whether or not the data to be replaced is included in the input print job data by pattern matching. When it is determined by the determination unit that the print job data includes the data to be replaced,
The image forming apparatus according to claim 1, wherein the process detection unit updates the identification information.   The notification control unit generates message information for notifying that the replacement processing has been performed on the print job data when the identification information is updated by the processing detection unit. The image forming apparatus according to any one of 1 to 3.   The image forming apparatus according to claim 1, wherein the notification control unit displays the message information on a display unit.   5. The information control unit according to claim 1, wherein the notification control unit adds the message information to a print output of the print job data subjected to the replacement processing, and causes the image forming unit to output the message information. Image forming apparatus. A determination step of determining whether the input print job data includes data to be replaced;
A process detection step for controlling update of identification information for identifying that the replacement process has been performed on the print job data in accordance with the determination in the determination step;
A control method for an image forming apparatus, comprising: a notification control step for notifying that the replacement processing has been performed on the print job data when the identification information is updated by the processing detection step.   8. The method of controlling an image forming apparatus according to claim 7, wherein the determination step detects whether the data to be replaced is included in the input print job data by pattern matching. When it is determined in the determination step that the print job data includes the data to be replaced,
The method of controlling an image forming apparatus according to claim 7, wherein the process detection step updates the identification information.   The notification control step generates message information for notifying that the replacement processing has been performed on the print job data when the identification information is updated by the processing detection step. The method for controlling an image forming apparatus according to any one of 7 to 9.   The method according to claim 7, wherein the notification control step displays the message information on a display unit.   11. The notification control step adds the message information to a print output of the print job data subjected to the replacement process, and causes the image forming unit to output the message information. Image forming apparatus control method.   A program for causing a computer to execute the method for controlling an image forming apparatus according to any one of claims 7 to 12.   A computer-readable storage medium storing the program according to claim 13.

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