JP5495315B2 - Image processing apparatus and program - Google Patents

Description

  The present invention relates to an image processing apparatus and a program.

  2. Description of the Related Art Conventionally, a technique is known in which a tint block pattern formed on a recording medium such as paper is read by a predetermined reading device to output information held by the tint block pattern to an external device (for example, Patent Document 1). reference).

JP 2009-99129 A

  Generally, in the above prior art, black toner containing carbon is used for drawing a tint block pattern. Carbon contained in the black toner has a property of absorbing infrared rays, and the reading device irradiates the background pattern with infrared rays, and acquires information held by the background pattern from the difference in the absorption pattern.

  As described above, black toner containing carbon is exclusively used for forming a tint block pattern. Therefore, for example, in an image processing apparatus that forms a color image using toners of four colors (black, cyan, magenta, and yellow), each color of dots constituting an image drawn on the same page as the copy-forgery-inhibited pattern is black. Other than the remaining cyan, magenta, and yellow, it is expressed by being separated into three colors. When each color of dots constituting the image is black, gray, or the like, three colors of cyan, magenta, and yellow are superimposed to express a color such as black or gray.

  However, if an image having a color such as black or gray expressed by superimposing cyan, magenta, and yellow toners is drawn on the dots of the tint block pattern drawn with black toner, the same will occur. Since the colors of the systems overlap, there is a problem that it is difficult to read image information formed on the recording medium. In particular, it is difficult to overlook the fact that the image information formed on the recording medium is difficult to read, for example, when calibrating an output that requires careful attention to the characters and arrangement formed on the recording medium.

  The present invention has been made in view of such circumstances, and the problem of the present invention is that even if information necessary for reading is superimposed on a tint block pattern formed of black toner, Is to provide an image processing apparatus and a program capable of supplying an output that can easily determine necessary image information visually.

In order to solve the above problem, the image processing apparatus according to the present invention has the same color attribute used for forming a background pattern and the same color attribute used for forming an image drawn on the same page as the background pattern. It includes a determination unit configured to determine whether a similar, and a converting means for converting the color attribute of used to form the image when it is determined that the same or similar by the determination means, the tint block Part or all of the image data corresponding to the image drawn on the same page as the pattern is character data, the determination means determines the character size in the character data, and the conversion means determines that the character size is wherein the row Ukoto the conversion of the color attributes for threshold following characters.

In the program according to the present invention, whether the color attribute used for forming the tint block pattern and the color attribute used for forming the image drawn on the same page as the tint block pattern are the same or similar. Determination means for determining whether or not , and conversion means for converting an attribute of a color used for forming the image when the determination means determines that they are the same or similar . Part or all of the image data corresponding to the image to be drawn is character data, and the determination means determines the character size in the character data, and the conversion means reduces the character size to a character equal to or less than a threshold value. It is characterized by functioning to convert color attributes.

  According to the present invention, even when image information necessary for reading is formed on a tint block pattern formed of black toner, a user can easily determine necessary image information visually. It is possible to provide an image processing apparatus and a program that can supply various output products.

2 is a block diagram illustrating a functional configuration of a printer. FIG. 3 is a flowchart illustrating an overall process executed by a printer. It is a flowchart explaining the data reception process which a communication part performs. It is a schematic diagram for demonstrating the structure of reception data. It is a printing sample figure. It is a flowchart explaining the data edit process which an edit part performs. It is a flowchart explaining the data discrimination | determination process which a data discrimination | determination part performs. It is a flowchart explaining the color process which a color process part performs. It is a flowchart explaining the character color change process which a color conversion part performs. It is a flowchart explaining the data expansion | deployment process which an expansion | deployment part performs. 6 is a flowchart for explaining print control processing executed by a control unit. 2 is a block diagram illustrating a functional configuration of a printer. FIG. 3 is a flowchart illustrating an overall process executed by a printer. It is a flowchart explaining the data edit process which an edit part performs. It is a flowchart explaining the conversion condition setting process which an I / O process part performs. It is a figure explaining a character conversion table. It is an example of a display screen. It is an example of a character color setting screen. It is an example of a character size setting screen. It is a figure explaining the relationship between the setting of "maximum character size" or "color after conversion", and the conversion process result. It is a flowchart explaining the color process which a color process part performs. It is a figure explaining a modification. It is a block diagram explaining the structure of a color processing part. It is a block diagram explaining the structure of a color processing part.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably.

[First embodiment]
FIG. 1 is a block diagram illustrating a functional configuration of a printer 500 as an image processing apparatus according to the first embodiment. The printer 500 may form an image on a recording medium based on print job data transmitted from a PC (Personal Computer) 1 of an external apparatus connected via a communication line such as a LAN (Local Area Network) cable. It is a possible image processing apparatus. In the following description of the embodiment, the tint block pattern is expressed as a dot pattern, and data including the dot pattern information is represented by dot pattern data, character color attribute information, and character drawing such as character size. Data including information related to the above is expressed as character data. Examples of the tint block pattern (dot pattern) include, but are not limited to, an Anoto pattern read by an Anoto pen developed by Anoto, Sweden.

  The printer 500 includes a communication unit 110, a data analysis unit 120, a control unit 130, an image forming unit 150, a reception data buffer 210, an intermediate data buffer 220, and an image data buffer 230.

  The communication unit 110 includes an interface that can be connected to a communication line such as a LAN cable, for example, and transmits and receives print job data to and from the PC 1. Then, the communication unit 110 stores the received data in the received data buffer 210 in the same format. Here, the received data in the print job data means raw data obtained by converting the image data generated by the PC 1 into a character string that is meaningless as it is based on the transmission protocol.

  The data analysis unit 120 includes a data determination unit 124, an editing unit 121 having a color processing unit 122, and a development unit 123. The color processing unit 122 includes a color determination unit 125 and a color conversion unit 126.

  The editing unit 121 reads the received data stored in the received data buffer 210, converts it into intermediate data, and stores it in the intermediate data buffer 220. Here, the intermediate data means that received data is divided in units of data for each page of the recording medium (hereinafter, data for one page of the recording medium is referred to as page data), and the page data is grouped into several blocks. And stored in the intermediate data buffer 220.

  When converting received data into intermediate data, the data determining unit 124 determines whether the received data includes dot pattern data of a dot pattern drawn using a black color. If the received data includes dot pattern data, the color determination unit 125 of the color processing unit 122 determines the color represented by the character data of the corresponding page data. Here, when the color determination unit 125 determines that the color represented by the character data is black or gray, the color conversion unit 126 of the color processing unit 122 displays the color represented by the corresponding character data as black, Or, it is converted into a color different from gray.

  Then, every time conversion to intermediate data for each page data is completed, the editing unit 121 notifies the expansion unit 123 of the start block of the intermediate data stored in the intermediate data buffer 220.

  When the expansion unit 123 is notified of the block of the intermediate data buffer 220 in which the intermediate data is stored from the editing unit 121, the expansion unit 123 accesses the intermediate data buffer 220, reads the data of the block, converts the data into print image data, and converts the image into image data. The data is stored in the data buffer 230. Here, the print image data means bitmap data in which color information of black, cyan, magenta, and yellow is designated for each dot of a printed page. Then, every time the conversion into print image data for each page data is completed, the developing unit 123 notifies the control unit 130 of the start address of the page data stored in the image data buffer 230.

  The control unit 130 includes a CPU (Central Processing Unit) (not shown) and the like, and controls the printer 500 in an integrated manner. Further, when the start address of the page data is notified from the development unit 123, the control unit 130 reads out the print image data with reference to the image data buffer 230 based on the start address, and forms the read print image data into the image formation. Output to the unit 150.

  The image forming unit 150 includes a print engine such as a thermal recording method or an electrophotographic method using toners of black, cyan, magenta, and yellow, and each module such as a photosensitive drum and a fixing device included in the print engine. Then, a medium conveying roller for conveying the recording medium to the print engine is controlled, and an image based on the print image data is printed at an appropriate image forming position of the conveyed recording medium.

  The reception data buffer 210, the intermediate data buffer 220, or the image data buffer 230 includes, for example, a RAM (Random Access Memory) (not shown), a rewritable storage device such as a flash memory, and the like. The intermediate data buffer 220 stores intermediate data, and the image data buffer 230 stores print image data. The reception data buffer 210, the intermediate data buffer 220, or the image data buffer 230 may be configured as independent storage devices, but the storage area provided in a single storage device is divided for each buffer area. It is good also as a form to comprise.

  Next, the operation of the printer 500 having the above configuration will be described. First, the overall process executed by the printer 500 will be described with reference to FIG. 2, and then the process of each step in FIG. 2 will be described.

  First, in step S100, when the print job data transmitted by the PC 1 is received, the communication unit 110 stores the received data in the received data buffer 210 in the form as it is.

  Next, the editing unit 121 reads the received data stored in the received data buffer 210, converts it into intermediate data, and stores it in the intermediate data buffer 220 (step S200). At this time, if the received data includes dot pattern data, the color determination unit 125 of the color processing unit 122 determines the color represented by the character data of the corresponding page data. When the color determination unit 125 determines that the color represented by the character data is black or gray, the color conversion unit 126 of the color processing unit 122 sets the color represented by the corresponding character data to black or gray. Convert to a different color. Here, since the dot pattern is formed in black, the color determination unit 125 determines whether the color represented by the character data is black or gray.

  Next, in step S300, the expansion unit 123 accesses the intermediate data buffer 220, converts the intermediate data into print image data, and stores the print data in the image data buffer 230.

  When the print image data for the page data is stored in the image data buffer 230, the control unit 130 controls the image forming unit 150 to execute printing (step S400).

  Next, processing executed in each step in the overall processing of the printer 500 executed in such a flow will be described in detail.

  First, the data reception process according to step S100 in FIG. 2 will be described with reference to FIG. FIG. 3 is a flowchart for explaining data reception processing executed by the communication unit 110.

  In step S110, when the print job data transmitted by the PC 1 is received, the communication unit 110 starts writing received data in the received data buffer 210 (step S120).

  Then, the communication unit 110 notifies the editing unit 121 of the write data write start address (step S130) and continues to write the receive data to the receive data buffer 210 (step S140).

  When the writing of the reception data to the reception data buffer 210 is completed (Y in step S150), the communication unit 110 ends the data reception process.

  Here, reception data stored in the reception data buffer 210 by the communication unit 110 will be described with reference to FIG. FIG. 4 is a schematic diagram for explaining the configuration of received data.

  As shown in FIG. 4, the received data starts from form data described with the first specific character string (%!) As the head. If the print job related to the received data is a print job including dot pattern data, the print job is a print job including dot pattern data as print job information near the top of the first form data. A character string that clearly indicates that it is inserted (in the present embodiment,% job information “including dot pattern”) is inserted.

  Next, using the second specific character string (/// data delimiter ///) as the data delimiter character, dot pattern data that covers and covers the form data is recorded, and the third specific character string is further recorded. The form data of the next page starting with the first specific character string follows the page break defined by (/// page break ///). Then, at the end of the received data, a data end symbol defined by a fourth specific character string (--data end->) is inserted.

  Here, the form data means data other than the background dot pattern in the data to be printed. Specifically, as shown in the print sample diagram of FIG. 5, the form data includes character data corresponding to the characters 11 printed on the paper 10, table frame data corresponding to the table frame 12, the arrangement of the characters 11, It is composed of data such as format data defining the size and the like, and means data used for image formation other than the dots 13 forming the dot pattern. Note that the order of the form data and dot pattern data recorded in the received data is irrelevant to the arrangement on the paper during printing.

  Next, the data editing process according to step S200 in FIG. 2 will be described with reference to FIG. FIG. 6 is a flowchart illustrating data editing processing executed by the editing unit 121.

  In step S205, when the write start address of the received data is notified from the communication unit 110, the editing unit 121 accesses the received data buffer 210 based on the notified write start address, and executes data determination processing.

  Specifically, the editing unit 121 instructs the data determination unit 124 to execute a data determination process, and determines whether or not dot pattern data drawn using the black color is included in the received data. The data determination process (step S210) by the data determination unit 124 will be described in detail later.

  Here, when the dot pattern data is included in the received data (Y in step S215), the editing unit 121 reads page data that is data for one page of the recording medium from the received data buffer 201 (step S220).

  Next, the editing unit 121 extracts dot pattern data from the read page data (step S222), and converts this into intermediate data (step S225).

  Then, the editing unit 121 stores the intermediate data obtained in step S225 in the intermediate data buffer 220 (step S230).

  Next, the editing unit 121 extracts form data from the received data (step S235). Then, the editing unit 121 instructs the color processing unit 122 to execute color processing. The color processing (step S240) by the color processing unit 122 will be described in detail later.

  Next, the editing unit 121 stores the intermediate data of the character data for which the color processing by the color processing unit 122 has been completed in the intermediate data buffer 220 (step S245), and the intermediate data of the stored dot pattern or character data. The start block is notified to the expansion unit 127 (step S250).

  When the dot pattern data is not included in the received data (N in step S215), the editing unit 121 reads page data that is data for one page of the recording medium from the received data buffer 201 (step S291).

  Next, the editing unit 121 converts the read page data into intermediate data (step S292) and stores it in the intermediate data buffer 220 (step S293).

  Then, the editing unit 121 notifies the expansion unit 127 of the start block of the stored intermediate data (step S294).

  FIG. 7 is a flowchart for explaining the data determination processing executed by the data determination unit 124 in step S210 of FIG.

  When receiving the write start address of the received data from the communication unit 110 (step S211), the data determining unit 124 reads the header information of the received data based on the write start address (step S212), and stores the received data in the received data. Whether or not there is a character string that clearly indicates that the print job is a print job including dot pattern data is confirmed.

  Here, when a character string corresponding to “including a dot pattern” is described (Y in step S213), the data determination unit 124 returns to the editing unit 121 that “there is a dot pattern”. On the other hand, when a character string corresponding to “including a dot pattern” is not described (N in step S213), the data determination unit 124 returns “no dot pattern” to the editing unit 121.

  FIG. 8 is a flowchart illustrating the color processing executed by the color processing unit 122 in step S240 of FIG.

  The color determination unit 125 of the color processing unit 122 extracts character data for each character from the form data extracted by the editing unit 121, and determines the color represented by the character data. As described above, the black color is used for drawing the dot pattern. Therefore, the color information set in the character data of the character drawn on the dot pattern is based on the Munsell color system, so-called hue, saturation or brightness, or a combination thereof, cyan (C), It is separated into three colors, magenta (M) and yellow (Y), and values of 0 to 255 are given respectively.

  In step S241, the color determination unit 125 determines whether the setting values of cyan, magenta, and yellow of the color information set in the character data are the same value. Here, when the setting values of cyan, magenta, and yellow are the same value (step S241 Y), and further, when the setting value is not 0 (step S242 Y), the color determination unit 125 represents the character data. The color to be determined is determined to be an achromatic color, and the fact is notified to the color conversion unit 126. Upon receiving the notification, the color conversion unit 126 changes the setting value set in the character data to a chromatic color (step S260), and returns the character data whose setting value has been changed to the editing unit 121 (step S244).

  In step S241, the color determination unit 125 determines that the set values of cyan, magenta, and yellow are the same, and if the set value is not 0, the color represented by the character data is an achromatic color. Although it has been described that it is determined that there is, the determination is not limited to this. For example, if the difference between the setting values of cyan, magenta, and yellow is within 5 to 7%, the color determination unit 125 determines that the color represented by the character data is similar to an achromatic color, and This may be notified to the color conversion unit 126 and the setting value set in the character data may be changed.

  On the other hand, when the setting values of cyan, magenta, and yellow are not the same value (step S241 N), the color determination unit 125 determines that the color represented by the character data is a chromatic color, and the character data is edited. It returns to 121 (step S244).

  In step S242, when each setting value of cyan, magenta, and yellow is 0 (N in step S242), the color represented by the character data is white. Since this is intended to prevent the user from seeing the print result, the color determination unit 125 returns the character data to the editing unit 121 without changing the setting value (step S244).

  FIG. 9 is a flowchart illustrating the character color changing process executed by the color conversion unit 126 in step S260 of FIG. In the present embodiment, a description will be given of a mode in which black or gray characters that are achromatic colors are converted into blue-gray that has been conventionally used for ink such as a fountain pen.

  The color conversion unit 126 checks whether or not the cyan setting value set in the character data of the character whose color is to be converted is 235 or less. Here, when the cyan setting value is 235 or less (Y in step S261), the color conversion unit 126 adds 20 to the current cyan setting value and leaves the magenta and yellow setting values as they are (step S261). S262). On the other hand, when the cyan setting value is larger than 235 (N in step S261), the color conversion unit 126 sets the cyan setting value to 255 and the magenta and yellow setting values to 235 ( Step S263). Then, the color conversion unit 126 returns the set values of cyan, magenta, and yellow to the editing unit 121.

  In this way, the character data that has been subjected to color processing by the color processing unit 122 is stored in the intermediate data buffer 220 as intermediate data by the editing unit 121. Then, the editing unit 121 notifies the development unit 127 of the start block of the intermediate data related to the stored dot pattern and character data.

  Next, the data expansion processing according to step S300 of FIG. 2 will be described using FIG. FIG. 10 is a flowchart for explaining a data expansion process executed by the expansion unit 127 that is notified of the start block of the intermediate data related to the dot pattern and character data by the editing unit 121.

  First, when the expansion unit 123 receives a notification of the start block of intermediate data from the editing unit 121 (step S310), the expansion unit 123 accesses the intermediate data buffer 220 and reads the intermediate data (step S320).

  Next, the developing unit 123 converts the read intermediate data into bitmap format print image data (step S330), and stores the print image data obtained by the conversion in the image data buffer 230 (step S340). .

  Then, the developing unit 123 notifies the control unit 130 of the start address of the print image data stored in the image data buffer 230 (step S350).

  Next, the print control process according to step S400 in FIG. 2 will be described with reference to FIG. FIG. 11 is a flowchart for explaining the print control process executed by the control unit 130 that has received the notification of the start address of the print image data stored in the image data buffer 230 by the expansion unit 123.

  First, upon receiving notification of the start address of the print image data from the expansion unit 123 (Step S410), the control unit 130 accesses the image data buffer 230, reads the print image data, and outputs the print image data to the image forming unit 150 (Step S410). S420).

  Next, the control unit 130 controls the image forming unit 150 to print an image based on the print image data at an appropriate image forming position on the conveyed recording medium (step S430).

  As described above, according to the first embodiment, image information (characters) to be superimposed on a dot pattern drawn with a black color is drawn with a chromatic color, so that the image information that a user needs visually (Character) can be easily identified.

[Second Embodiment]
The configuration and operation of the printer 500 ′ according to the second embodiment are substantially the same as the configuration and operation of the printer 500 according to the first embodiment. Therefore, in the description of the second embodiment, the description of the same parts as in the first embodiment will be omitted, and different parts will be described.

  FIG. 12 is a block diagram illustrating a functional configuration of a printer 500 ′ according to the second embodiment. The printer 500 ′ includes an I / O processing unit 140 and a character conversion table 240 in addition to the configuration of the printer 500 according to the first embodiment.

  When the received data includes dot pattern data, the I / O processing unit 140 asks the user, for example, “how many characters should be colored” or “how many characters should be colored”. Then, the user is prompted to input settings related to character color conversion via the communication unit 110 and the PC 1.

  The character conversion table 240 stores user setting values for character color conversion received by the I / O processing unit 140 in a table format.

  Next, the operation of the printer 500 ′ having the above configuration will be described. First, the overall processing executed by the printer 500 'will be described with reference to FIG. 13, and then the processing of each step in FIG. 13 will be described.

  First, in step S100, when the print job data transmitted by the PC 1 is received, the communication unit 110 stores the received data in the received data buffer 210 in the form as it is.

  Next, the editing unit 121 reads the received data stored in the received data buffer 210, converts it into intermediate data, and stores it in the intermediate data buffer 220 (step S1200). At this time, if the received data includes dot pattern data, the color determination unit 125 of the color processing unit 122 determines the color represented by the character data of the corresponding page data. When the color determination unit 125 determines that the color represented by the character data is black or gray, the color conversion unit 126 of the color processing unit 122 sets the color represented by the corresponding character data to black or gray. Convert to a different color.

  Next, in step S300, the expansion unit 123 accesses the intermediate data buffer 220, converts the intermediate data into print image data, and stores the print data in the image data buffer 230.

  When the print image data for the page data is stored in the image data buffer 230, the control unit 130 controls the image forming unit 150 to execute printing (step S400).

  The process of each step executed by each member in the overall process of the printer 500 executed in such a flow will be described in detail. Note that the data reception process according to step S100, the data expansion process according to step S300, and the print control process according to step S400 are the same as the processes described in the first embodiment, and therefore the description thereof is here. Omitted.

  The data editing process according to step S1200 in FIG. 13 will be described with reference to FIG. FIG. 14 is a flowchart for explaining data editing processing executed by the editing unit 121.

  In step S1205, when the write start address of the received data is notified from the communication unit 110, the editing unit 121 accesses the received data buffer 210 based on the notified write start address, and executes data determination processing.

  Specifically, the editing unit 121 instructs the data determination unit 124 to execute a data determination process, and determines whether or not the received pattern includes dot pattern data drawn using a black color (step). S1210).

  If the dot pattern data is included in the received data (Y in step S1215), the editing unit 121 instructs the I / O processing unit 140 to execute the conversion condition setting process, and converts the character color to the user. The user is prompted to set the maximum character size and color after conversion. The conversion condition setting process (step S1270) by the I / O processing unit 140 will be described in detail later.

  Then, the editing unit 121 reads page data that is data for one page of the recording medium from the reception data buffer 201 (step S1220).

  Next, the editing unit 121 extracts dot pattern data from the read page data (step S1222), and converts this into intermediate data (step S1225).

  Then, the editing unit 121 stores the intermediate data obtained in step S1225 in the intermediate data buffer 220 (step S1230).

  Next, the editing unit 121 extracts form data from the received data (step S1235). Then, the editing unit 121 instructs the color processing unit 122 to execute color processing. The color processing (step S1300) by the color processing unit 122 will be described in detail later.

  Next, the editing unit 121 stores the intermediate data of the character data for which the color processing by the color processing unit 122 has been completed in the intermediate data buffer 220 (Step S1245), and the intermediate data of the stored dot pattern and character data. The start block is notified to the expansion unit 127 (step S1250).

  By the way, when the dot pattern data is not included in the received data (N in step S1215), the editing unit 121 reads page data that is data for one page of the recording medium from the received data buffer 201 (step S1291).

  Next, the editing unit 121 converts the read page data into intermediate data (step S1292) and stores it in the intermediate data buffer 220 (step S1293).

  Then, the editing unit 121 notifies the developing unit 127 of the start block of the stored intermediate data (step S1294).

  FIG. 15 is a flowchart illustrating the conversion condition setting process executed by the I / O processing unit 140 in step S1270 of FIG.

  When dot pattern data is included in the received data and the editing unit 121 receives an execution instruction for conversion condition setting processing, the I / O processing unit 140 refers to a character conversion table 240 as shown in FIG. The set values of “maximum character size” and “color after conversion” are acquired (step S1271).

  Next, the I / O processing unit 140 displays a display screen such as the display example shown in FIG. 17 on the basis of the setting value acquired in step S1271 via the communication unit 110 and a display device such as a monitor (not shown) of the PC 1. Are displayed (step S1272). In FIG. 17, the color corresponding to the “color after conversion” acquired from the character conversion table 240 is displayed on the monitor as the color after conversion, but the set values of cyan, magenta, and yellow are displayed as they are. You may let them.

  Here, when changing the “maximum character size” or “color after conversion”, the user selects a “change” button set in each display field. On the other hand, when it is not necessary to change the “maximum character size” or “color after conversion”, the user selects the “OK now” button.

  When the user selects the “change” button of “color after conversion” (step S1273 [character color]), the I / O processing unit 140 selects “color after conversion” as shown in FIG. A prompt character color setting screen is displayed (step S1280).

  When a desired character color is input by the user and the “OK now” button is selected (step S1281 [OK]), the I / O processing unit 140 uses the input value as a user set value as a character conversion table. 240 (step S1282), the process returns to the process of step S1271, and the setting values of “maximum character size” and “color after conversion” set at the present time are acquired, and the communication unit 110 serves as a setting value screen. And display via a display device such as a monitor (not shown) of the PC 1 (step S1272). On the other hand, when the “return” button is selected in step S1281, the I / O processing unit 140 returns to the processing in step S1271, and “maximum character size” and “color after conversion” set at the present time. Is displayed as a setting value screen via the communication unit 110 and a display device such as a monitor (not shown) of the PC 1 (step S1272). In the character color setting screen shown in FIG. 18, instead of the character color button, a color chart or set values of cyan, magenta, and yellow may be displayed as they are.

  When the “change” button of “maximum character size” is selected by the user (step S1273 [size]), the I / O processing unit 140 prompts the user to select the “maximum character size” as shown in FIG. A setting screen is displayed (step S1274).

  Then, the user inputs a desired character size using either “△ (large)” or “▽ (small)” displayed on both sides of the display character size shown in FIG. When the “OK” button is selected (step S1275 [OK]), the I / O processing unit 140 stores the input value as a user setting value in the character conversion table 240 (step S1276), and the processing of step S1271 , The setting values of “maximum character size” and “color after conversion” set at the present time are acquired, and the setting value screen is displayed via the communication unit 110 and a display device such as a monitor (not shown) of the PC 1. Are displayed (step S1272). On the other hand, when the “return” button is selected in step S1275, the I / O processing unit 140 returns to the processing in step S1271, and the “maximum character size” and “color after conversion” set at the present time. Is displayed as a setting value screen via the communication unit 110 and a display device such as a monitor (not shown) of the PC 1 (step S1272).

  In step S1273, when the user selects the “OK now” button, the I / O processing unit 140 notifies the communication unit 110 and the PC 1 (not shown) that the conversion condition setting process is ended. The display is made via the display device (step S1279), and the process is terminated.

  Here, the relationship between the setting of “maximum character size” or “color after conversion” by the user and the conversion processing result will be described with reference to FIG. In the conversion condition setting process, the user is assumed to set the value of “maximum character size” to 14 pt, and “color after conversion” to cyan = 100, magenta = 0, and yellow = 0.

  For example, if there is a character drawn in a black color with a character size of 12 pt as shown in Example 1 of FIG. 20 in the received data, the character printed on the recording medium is cyan = character size 12 pt. 100 is drawn. Also, for example, if there is a character drawn in black color with a character size of 18 pt as shown in Example 2 of FIG. 20 in the received data, it is larger than the value set in “Maximum character size”. Therefore, characters printed on the recording medium are drawn with the same size and color.

  FIG. 21 is a flowchart illustrating the color processing executed by the color processing unit 122 in step S1300 of FIG.

  The color determination unit 125 of the color processing unit 122 extracts character data for each character from the form data extracted by the editing unit 121, and determines the character size and color of the character represented by the character data.

  Specifically, when the character size represented by the character data is equal to or smaller than the character size stored in the character conversion table 240 (Y in step S1301), the color processing unit 122 then selects the color represented by the character data. Make a decision. As described above, the black color is used for drawing the dot pattern. Therefore, the color information set in the character data of the character drawn on the dot pattern is based on the Munsell color system, so-called hue, saturation or brightness, or a combination thereof, cyan (C), It is separated into three colors, magenta (M) and yellow (Y), and values of 0 to 255 are given respectively.

  In step S1302, the color determination unit 125 determines whether the setting values of cyan, magenta, and yellow of the color information set in the character data are the same value. Here, when the setting values of cyan, magenta, and yellow are the same value (Y in step S1302) and the setting value is not 0 (Y in step S1303), the color determination unit 125 represents the character data. The color to be determined is determined to be an achromatic color, and the fact is notified to the color conversion unit 126. Upon receiving the notification, the color conversion unit 126 changes the setting value set in the character data to the setting value stored in the character conversion table 240 to make a chromatic color (step S1304), and the character whose setting value has been changed. Data is returned to the editing unit 121.

  In step S1302, the color determination unit 125 determines that the setting values of cyan, magenta, and yellow are the same, and if the setting value is not 0, the color represented by the character data is an achromatic color. Although it has been described that it is determined that there is, the determination is not limited to this. For example, if the difference between the setting values of cyan, magenta, and yellow is within 5 to 7%, the color determination unit 125 determines that the color represented by the character data is similar to an achromatic color, and This may be notified to the color conversion unit 126 and the setting value set in the character data may be changed.

  On the other hand, when the character size represented by the character data is larger than the character size stored in the character conversion table 240 (N in step S1301), the color determination unit 125 edits the character data as it is without changing the set value. It returns to 121 (step S1306).

  If the setting values of cyan, magenta, and yellow are not the same value (step S1302 N), the color determination unit 125 determines that the color represented by the character data is a chromatic color, and the character data is edited. It returns to 121 (step S1306).

  In step S1303, when the set values of cyan, magenta, and yellow are 0 (N in step S1303), the color represented by the character data is white. Since this is intended to prevent the user from seeing the print result, the color determination unit 125 returns the character data to the editing unit 121 without changing the setting value (step S1306).

  As described above, according to the second embodiment, in addition to the effects according to the first embodiment, a character having a size equal to or smaller than the character size set by the user is converted into a color set by the user and printed. It becomes possible for the user to easily determine necessary information visually.

  In the description of the first embodiment and the second embodiment, the character data is extracted from the form data extracted by the editing unit 121 for each character, and the color represented by the character data is converted. Although described above, the present invention is not limited to this, and the color of the entire extracted form data may be converted.

[Modification 1]
In the first modification, for example, as shown in FIG. 22, when there is only a part of the dot pattern drawn on one page of the recording medium, the character data (characters “A” and “A” “ A mode of converting only the color information set in (character data corresponding to “B”) will be described.

  In this case, as shown in FIG. 23, the color detection unit 127 and the region determination unit 128 are provided in the color processing unit 122 described in the first embodiment or the second embodiment, so that the recording medium 1 When only a part of the dot pattern drawn on the page exists, only the color information set in the character data of the character drawn on the dot pattern can be converted.

  In other words, the area detection unit 127 analyzes the received data to acquire the coordinate information of the drawing area where the dot pattern is drawn and the coordinate information of the drawing area where the character is drawn. Then, the region determination unit 128 determines whether or not a character is drawn on the dot pattern based on each coordinate information acquired by the region detection unit 127. The color conversion unit 126 described above converts the color information set in the character data of the character drawn on the dot pattern, thereby realizing the above function.

[Modification 2]
In the first embodiment, the second embodiment, and the first modification, the color determination unit 125 assumes that the color used for drawing the dot pattern is black (achromatic color), and the color represented by the character data is It has been described as determining whether or not it is an achromatic color. On the other hand, the color determination unit 125 in Modification 2 acquires color attribute information used for drawing the dot pattern, and the color used for drawing the dot pattern is the same as the color represented by the character data. Alternatively, it is determined whether they are similar.

  Specifically, the color processing unit 122 according to Modification 2 is configured to include a color storage unit 129 in addition to the color determination unit 125 and the color conversion unit 126, as shown in FIG. That is, the color determination is performed on the attribute information of the color of the dot pattern set by the user on the setting screen displayed by the I / O processing unit 140 via the communication unit 110 and a display device such as a monitor (not shown) of the PC 1. The unit 125 obtains the attribute information of the color of the dot pattern in the color storage unit 129.

  Then, the color determination unit 125 determines whether the color used for drawing the dot pattern stored in the color storage unit 129 is the same as or similar to the color represented by the character data. Even if the color used for drawing is not black (achromatic color), the information that is superimposed on the dot pattern is drawn in a color other than the color used for drawing the dot pattern, making it easy for the user to visually check the necessary information Can be determined. The method for obtaining the dot pattern color attribute information by the color determination unit 125 is not limited to the above description. For example, the reception data includes the dot pattern color attribute information. The dot pattern color attribute information may be acquired from the received data.

  In the description of the present invention, the form in which the printer is used as the image processing apparatus has been described. However, the present invention is not limited to this, and other than the printer, for example, an image forming mechanism that forms a color image such as an MFP or a facsimile machine. The present invention is applicable to an image processing apparatus including

1 PC
110 communication unit 120 data analysis unit 121 editing unit 122 color processing unit 123 expansion unit 124 data determination unit 125 color determination unit 126 color conversion unit 127 area detection unit 128 area determination unit 129 color storage unit 130 control unit 140 I / O processing unit 150 Image Forming Unit 210 Reception Data Buffer 220 Intermediate Data Buffer 230 Image Data Buffer 240 Character Conversion Table 500 Printer 500 ′ Printer

Claims (10)

Determining means for determining whether the attribute of the color used for forming the tint block pattern and the attribute of the color used for forming the image drawn on the same page as the tint block pattern are the same or similar;
Conversion means for converting the attribute of the color used for forming the image when it is determined by the determination means to be the same or similar ,
Part or all of the image data corresponding to the image drawn on the same page as the tint block pattern is character data,
The determination means determines a character size in the character data;
And the converting means, the image processing apparatus according to claim row Ukoto the conversion of the color attributes for the character size is below a threshold character. The color attribute is hue, saturation or brightness, or a combination thereof
The image processing apparatus according to claim 1. The determining unit determines whether the color used for forming the image is an achromatic color when the color used for forming the tint block pattern is an achromatic color;
When the determination unit determines that the color used for forming the image is an achromatic color, the conversion unit converts the color used for forming the image into a chromatic color.
The image processing apparatus according to claim 1 or 2. The tint block pattern is an Anoto pattern
The image processing apparatus according to claim 1, wherein the image processing apparatus is an image processing apparatus. Comprising first setting means for accepting the setting of the threshold value;
The image processing apparatus according to claim 1. A second setting means for receiving setting of the attribute of the color after conversion;
The converting unit converts a color attribute used for forming the image based on a setting received through the second setting unit.
The image processing apparatus according to claim 1, wherein:

A drawing area detecting means for detecting a tint block pattern drawing area on which a tint block pattern is formed and an image drawing area on which an image to be drawn on the same page as the tint block pattern is formed;
  Area determining means for determining whether or not the tint block pattern drawing area and the image drawing area overlap,
The converting means converts a color attribute used for forming the image in an area where the tint block pattern drawing area and the image drawing area overlap.
The image processing apparatus according to claim 1. Determining means for determining whether the attribute of the color used for forming the tint block pattern and the attribute of the color used for forming the image drawn on the same page as the tint block pattern are the same or similar;
Conversion means for converting the attribute of the color used for forming the image when the determination means determines that they are the same or similar;
A drawing area detecting means for detecting a tint block pattern drawing area on which a tint block pattern is formed and an image drawing area on which an image to be drawn on the same page as the tint block pattern is formed;
Area determining means for determining whether or not the tint block pattern drawing area and the image drawing area overlap,
The converting means converts a color attribute used for forming the image in an area where the tint block pattern drawing area and the image drawing area overlap.
An image processing apparatus. Computer
Determining means for determining whether the attribute of the color used for forming the tint block pattern and the attribute of the color used for forming the image drawn on the same page as the tint block pattern are the same or similar;
Conversion means for converting the attribute of the color used for forming the image when it is determined by the determination means to be the same or similar,
Part or all of the image data corresponding to the image drawn on the same page as the tint block pattern is character data,
In the determination means, the character size in the character data is determined,
The conversion means functions to perform color attribute conversion for characters whose character size is a threshold value or less.
A program characterized by Computer
Determining means for determining whether the attribute of the color used for forming the tint block pattern and the attribute of the color used for forming the image drawn on the same page as the tint block pattern are the same or similar;
Conversion means for converting the attribute of the color used for forming the image when the determination means determines that they are the same or similar;
A drawing area detecting means for detecting a tint block pattern drawing area on which a tint block pattern is formed and an image drawing area on which an image to be drawn on the same page as the tint block pattern is formed;
Area determining means for determining whether or not the tint block pattern drawing area and the image drawing area overlap,
The converting means functions to convert color attributes used for forming the image in an area where the tint block pattern drawing area and the image drawing area overlap.
A program characterized by