JP4910767B2 - Printing system and printing system program - Google Patents

Description

  The present invention relates to a program for a printing system that performs printing based on print data, and more particularly to a program for a printing system having at least two types of printing modes of color printing and monochrome printing.

  In a print shop or the like that performs printing at the request of a user, payment of a price for a printed matter that is a product is generally performed based on a pay-per-use system. In the pay-per-use system, the charge may differ depending on whether the printing is monochrome (monochrome) printing or color printing as well as the number of printed sheets and the size. In particular, in a printing apparatus using an electrophotographic method, a plurality of toner colors of Y (yellow), M (magenta), C (cyan), and K (black) are superimposed when performing color printing as compared with monochrome printing. As a result, a full-color image is formed. For this reason, in general, the unit price per printed sheet is set higher in color printing than in monochrome printing.

  The selection of whether to perform color printing or monochrome printing is typically performed by user designation or automatic setting. The former is selected by the user instructing the print mode, and the latter is automatically selected by analyzing the file information of print data to be scanned or received from an external PC or the like. . The latter is also called automatic color selection (ACS).

  In the case of automatic color selection, there is no problem as long as the requesting user intends to perform color printing. However, if you wanted a low-priced monochrome print but color printed against the user's intention by improperly recognizing the actual print mode, you will be charged a high fee. It becomes a problem.

  Inappropriate recognition as described above is as follows. (1) When print data to be output is mostly formed of monochrome image data, but part of it includes color image data, (2) the color is An achromatic gray color or close to it, but easily occurs when it has color information.

In Patent Document 1, as a method for easily confirming a color space set by a user in a document to be printed before printing, what color space is applied to all objects in the document before printing. A document management apparatus for performing a preflight check is disclosed.
JP 2006-31472 A

  However, in the document management apparatus disclosed in Patent Document 1, the color space can be confirmed for all objects in the document to be printed in the preflight check, but whether color printing should be performed for each page or monochrome printing. There is no place to teach the effective information to make the user judge.

  SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a printing system program that can prevent inappropriate recognition of an output print mode and easily determine the output print mode. .

  The above object is achieved by the invention described below.

(1) A program for a printing system that has at least two printing modes of monochrome printing and full-color printing and prints on paper based on print data,
A print mode determination step for determining whether monochrome printing is appropriate as a print mode for printing the print data; and
An analysis step of analyzing the color for each object for the print data determined to be not suitable for monochrome printing in the print mode determination step;
Based on the color of the object analyzed in the analysis step, an extraction step for extracting an object to be highlighted,
Have a, a display step of highlighting Obujeto which was highlighted object in the extraction step on a display screen,
The highlighting performs at least one of pop-up, underline, luminance information inversion, and hatching on a target object .

(2) In the analysis step, by analyzing the color for each object, it is determined whether the monochrome printing is appropriate in the printing system for each object;
(1) characterized in that, in the extracting step, an object whose chroma information of the analyzed color is not more than a predetermined value among objects determined to be not suitable for monochrome printing in the analyzing step is to be highlighted. The printing system program described.

  (3) The printing system according to (1) or (2), wherein, in the extraction step, an object having the highest color saturation of the analyzed color among objects in the page to be printed is selected as a highlight display target. Program.

(4) a print mode changing step for inputting, by an operating means, whether or not to change a print page including an object determined to be not suitable for monochrome printing in the analysis step to monochrome printing for each page;
A printing step for monochrome printing of the page based on the input in the printing mode changing step;
The printing system program according to any one of (1) to (3), further comprising:

  (5) The printing system program according to any one of (1) to (4), wherein in the display step, an object is highlighted and color information of the object is displayed on a display screen.

( 6 ) In the display step, the objects to be highlighted in the page are prioritized based on the saturation of the objects, and are highlighted in the order based on the priority (1 ). printing system program described.

( 7 ) A printing system that has at least two printing modes of monochrome printing and full-color printing and prints on paper based on print data,
The printing system has display means and control means,
The control means analyzes the color for each object of the print data determined to be not suitable for monochrome printing, extracts an object to be highlighted based on the analyzed object color, and selects the object to be highlighted. Highlight on the display screen of the display means ,
The printing system according to claim 1, wherein the highlighting performs at least one of a process of pop-up, underlining, luminance information reversal, and hatching on a target object .
(8) When the control unit highlights the object to be highlighted on the display screen of the display unit, the control unit prioritizes the object to be highlighted in the page based on the saturation of the object. The printing system according to (7), wherein highlighting is performed in an order based on the priority order.

  According to the present invention, it is possible to provide a printing system program capable of preventing inappropriate recognition of an output print mode and easily determining the output print mode.

  Although the present invention will be described based on an embodiment, the present invention is not limited to the embodiment.

  FIG. 1 is a diagram illustrating a configuration diagram of a printing system according to an embodiment of the present invention. In the printing system, a printing apparatus A and a terminal apparatus P are connected via a network N. In the printing apparatus A, printing is performed on a sheet based on print data obtained by reading a document by the printing apparatus or print data transmitted from the terminal apparatus P. In the figure, an example in which one printing apparatus A and one terminal apparatus P are connected one by one is shown. However, the present invention is not limited to this, and a plurality of printing apparatuses A and a plurality of terminal apparatuses are connected. P may be connected.

  FIG. 2 is a block diagram of a control system in the terminal device P. In the figure, the periphery of the portion necessary for the explanation of the operation of the present embodiment is mainly described, and other portions known as terminal devices are omitted.

  The terminal device P is a so-called personal computer. The terminal device P includes a CPU 201, ROM 202, RAM 203, HDD 204, communication I / F 205, system bus 206, display unit 220, operation unit 221, and data input / output device 230.

  A CPU (Central Processing Unit) 201 that functions as a control unit (control means) controls the operation of the entire terminal device P, and via a system bus 207, a ROM (Read Only Memory) 202 and a RAM (Random Access Memory). ) 203 or the like. The CPU 201 reads out various control programs stored in the ROM 202, develops them in the RAM 203, and controls the operation of each unit. In addition, the CPU 201 executes various processes according to the program developed in the RAM 203, stores the processing results in the RAM 203 and causes the display unit 220 to display them. Then, the processing result stored in the RAM 203 is stored in a predetermined storage destination.

  The ROM 202 stores programs, data, and the like in advance, and this recording medium is composed of a magnetic or optical recording medium or a semiconductor memory. The RAM 203 forms a work area for temporarily storing data processed by various control programs executed by the CPU 201. An HDD (Hard Disk Drive) 204 stores print data to be printed.

  A communication I / F 205 communicates print data including image data, programs, various data, and the like with the printing apparatus A or other external apparatuses via the network N.

  The display unit 220 includes a liquid crystal display unit and displays various types of information. The operation unit 221 includes a keyboard and a mouse and performs various inputs. The data input / output device 230 has a CD-ROM drive and a USB (Universal Serial Bus) terminal, and can read data such as print data stored in a CD-ROM or USB memory.

  FIG. 3 is a block diagram of a control system in the printing apparatus A. In the figure, the periphery of the part necessary for the explanation of the operation of the present embodiment is mainly described, and other parts known as the printing apparatus are omitted.

  In the printing apparatus A, the CPU 101, ROM 102, RAM 103, HDD 104, communication I / F 105, and system bus 106 have the same functions as those with the same names in FIG.

  The operation unit 121 enables various settings. The operation unit 121 includes a touch panel in which a touch screen is placed on a display unit 120 configured by a liquid crystal panel. When a user inputs or selects various settings through the operation unit 121, conditions regarding color printing and monochrome printing are set. Entered. Various information such as network setting information is displayed on the display unit 120.

  The print controller unit 106 includes an internal CPU (not shown), a memory, an image processing unit, and the like, and can control image data received from the terminal device P via the communication I / F 105 in the printing apparatus. It is to convert to data. When color printing is performed by the printing apparatus A using print data received from the terminal apparatus P, for example, R (Red), G (Green), and B (Blue) image data are color-coded by the image processing unit of the print controller unit 107. Color conversion is performed to image data of Y (Yellow), M (Magenta), C (Cyan), and Bk (Black) by a conversion LUT (Look Up Table). The color-converted image data is subjected to gradation reproduction characteristic correction, screen processing such as halftone dots, edge processing for emphasizing fine lines, and other image processing with reference to the density correction LUT in the image processing unit. Execute. Based on the Y, M, C, and Bk image data that has undergone image processing, the image forming unit A1 forms an image on the sheet. The image forming unit A1 will be described later.

  The color conversion LUT is generally unique to each printing apparatus. For example, in an electrophotographic printing apparatus, if the colorant (mainly pigment) of the chromatic toner is different, the color gamut that can be expressed by the printing apparatus will be different, so that it has different color conversion LUTs. .

  The image reading unit 110 optically reads a document image and converts it into an electrical signal. When reading a color original, for example, image data having luminance information of 8 bits for each of RGB per pixel is generated. When color printing is executed, RGB image data is color-converted into Y, M, C, and Bk image data using the color conversion LUT in the image processing unit 108. The color-converted image data is subjected to various types of image processing as described above, and an image is formed on a sheet by the image forming unit A1.

  FIG. 4 is a central sectional view of the printing apparatus A. The printing apparatus A is called a tandem color printing apparatus, and includes an image forming unit A1, an image reading unit 110, an operation display unit (120, 121), and an automatic document feeder D.

  The image forming unit A1 includes an image writing unit 3, a plurality of sets of image creating units 4Y (yellow), 4M (magenta), 4C (cyan), 4K (black), a belt-like intermediate transfer member 42, a paper feed cassette 5, A sheet feeding unit 6, a sheet discharge unit 7, an automatic double-sided copy sheet feeding unit 9, and a fixing device 10 are included.

  The image creating unit 4 (4Y, 4M, 4C, 4K) has a developing unit, and each has a small particle size toner of yellow (Y), magenta (M), cyan (C), and black (K). And a two-component developer composed of a carrier.

  An automatic document feeder D is mounted on the upper part of the printing apparatus A. The document placed on the document table of the automatic document feeder D is conveyed in the direction of the arrow, and an image on one or both sides of the document is read by the optical system of the image reading unit 1 and read by the CCD image sensor 1A. The analog signal photoelectrically converted by the CCD image sensor 1A is subjected to analog processing, A / D conversion, shading correction, image compression processing, and the like in the image processing unit 108, and then sent to the image writing unit 3.

  In the image writing unit 3, the output light from the semiconductor laser is irradiated onto the photosensitive drum 41 (reference numerals are omitted for M, C, and K) of the image creating unit 4 to form a latent image. In the image creating unit 4, processes such as charging, exposure, development, transfer, separation, and cleaning are performed. The toner images of the respective colors formed by the image creating unit 4 are sequentially transferred by the primary transfer unit 47 onto the rotating intermediate transfer body 42 to form a synthesized color image.

  The toner image on the intermediate transfer member 42 is transferred by the secondary transfer unit 43 from the paper feed cassette 5 to the paper S conveyed by the paper feed unit 6. The sheet S carrying the toner image is fixed by the fixing device 10, discharged from the discharge unit 7 to the outside of the apparatus, and placed on the discharge tray 8. Alternatively, the single-sided image processed (printed) paper S sent to the double-sided conveyance path 9 by a conveyance path switching gate (not shown) is again discharged from the paper discharge unit 7 after double-sided image processing in the image creating unit 4 and discharged. Placed on the pan 8.

  When full-color printing is performed by the printing apparatus A, the above-described four-color image forming units 4Y to 4K operate to perform full-color printing. When monochrome printing is performed, only the Bk-color image forming unit 4K operates. Monochrome printing. Note that the other Y, M, and C image forming units 4 are stopped during monochrome printing, and in that case, the Y, M, and C temporary transfer units 47 are intermediate to the photoreceptor 41. The load pressed from the inner peripheral surface of the transfer body 42 is released.

  FIG. 5 is a flowchart for explaining processing of the printing system. The flowchart is a process executed by software processing by the cooperation of the programs stored in the CPU 201 and the ROM 202 of the terminal device P.

  First, print data is input (step S1). The print data is input by, for example, reading data stored in the CD-ROM by the data input / output device 230.

[Determining if monochrome printing is appropriate]
Next, by analyzing the image data in the input print data, it is determined whether printing by the printing apparatus A is appropriate for a monochrome printing mode or another printing mode such as full-color printing (step). S2: Print mode determination step). The image data here is data composed of a plurality of pixels having color density information and position information, and includes an image image and a text image. The print data includes print header information together with the image data. The print header information is information such as the print mode setting, the number of prints, and the size of the paper to be printed.

Whether or not monochrome printing is appropriate in step S2 is determined by either of the following.
(1) When print mode instruction information is included in the print data (2) When it is clear that the print data is monochrome printing from the color space of the print data (3) When judging from the color space of the print data. Furthermore, (3) is (3.1) a case where the determination is made directly without considering the characteristics of the printing apparatus from the color space of the print data, and (3.2) a color unique to the printing apparatus in consideration of the characteristics of the printing apparatus to be output There are two types of cases when the output print mode is determined by emulation in consideration of the conversion LUT.

  The above (1) is a case where the print job header specified by the print requesting user or the like is included in the print job header. For example, when monochrome print is specified, the print mode is specified according to the instruction information. Is determined.

  (2) is a case in which color information is not included in the print data and only density information is included. In this case, the monochrome printing mode is selected.

  For example, (3.1) is a case where the RGB luminance data of the print data is compared, and if the RGB luminance data are equal, it is determined that the color is achromatic, and monochrome printing is determined.

  In the case of (3.2), it is determined whether or not the monochrome printing mode in which only Bk is output when the printing apparatus A outputs is selected, or the other mode. In this case, the program executed by the terminal device A incorporates in advance a function for emulating the color conversion LUT processing of the image processing executed by the print controller unit 107 of the printing device A that is scheduled to perform printing. There is a need. Due to the emulation function, when the input print data (RGB image data) is converted into Y, M, C, and Bk image data by the printing apparatus A, the monochrome print is converted only to the Bk image data. Or whether it will be full-color printing that includes other colors.

  Return to the description of the control flow. If it is determined from the print data (all pages included) that the appropriate print mode is monochrome printing (step S2: Yes) ends, and if it is determined that it is not appropriate (step S2: No), The print data is divided into objects (if necessary) (step S3).

  Here, the object is an object (area) that occupies a certain range in the print page when printing is performed. For example, a block of text composed of text attributes, and a group of photographic images or graphs composed of image attributes, and a table constitute one object. Further, when the print data received from the terminal device P is in the PDL (Page Description Language) format, it is managed in units of objects that are components to be originally printed. In this case, the step of step S3 may be omitted, and a structural unit handled in PDL format data may be handled as an object.

  In step S4, for each divided object, it is recognized whether the object is a text attribute or an image attribute. In addition, for each object recognized at that time, information on an arrangement position in the page to be printed is determined.

  Next, the color of each recognized object is analyzed (step S5: analysis step). In the color analysis, when an object has a uniform color, that color becomes the color of the object. On the other hand, when the object has a non-uniform color, the color information of all the pixels in the object may be acquired and the average value may be used as the color information of the object. Alternatively, information on the color of a pixel having the maximum saturation index value α, which will be described later, may be used as the color information of the object. If the object is determined to be a text attribute in step S4, the above determination is made in character units instead of pixel units.

  Next, an object to be highlighted is extracted based on the color of the object analyzed in step S5 (step S6: extraction step). Here, extraction of the highlight target will be described based on a subroutine shown in FIG. The subroutine is a process executed by software processing by the cooperation of programs stored in the CPU 201 and the ROM 202 of the terminal device P. In the description of this subroutine, an example using RGB colors will be described, but the present invention is not limited to this.

  In step S61 of FIG. 6, information on the color of the object is acquired. At this time, the color information analyzed in step S5 is used. As the color information, for example, if it is light blue in a format composed of RGB 8-bit luminance information, the information is R (00h), G (CCh), and B (FFh).

  In step S62, a saturation index value α is calculated from the acquired color. The saturation index value α is calculated from MAX (R, G, B) −MIN (R, G, B). MAX and MIN indicate functions for deriving the maximum value and the minimum value of the numerical values in parentheses, respectively. For example, if the above-mentioned light blue R (00h = 00D), G (CCh = 204D), B (FFh = 255D), MAX (00, 204, 255) = 255, MIN (00, 204, 255) = 0 Therefore, the saturation index value α is 255.

  Steps S63 to S65 are flows for highlighting objects that are not suitable for monochrome printing and that perform color printing and that have low saturation (hereinafter referred to as a dull color).

  First, in step S63, it is determined whether or not the target object is an object suitable for monochrome printing. This determination is performed by applying the same determination method as that used in step S2 described above to each object. For example, if the RGB luminance data are equal, that is, whether or not monochrome printing is an appropriate object is determined based on whether or not the saturation index value α = 0 (zero).

  If it is determined that monochrome printing is not appropriate (step S63: No), it is determined whether the saturation of the object is low (step S64). This determination is made based on whether or not the saturation index value α is equal to or less than a predetermined value. In this embodiment, if the saturation index value α is 3 or less (step S64: Yes), it is determined that the color is dull, and the object is set as a highlight target (candidate). The predetermined value used in step S64 is stored in advance in the ROM 202, but may be changed by an instruction from a user or the like.

  The flow from step S61 to step S65 is repeated until the determination is completed for all objects in the print data (step S66). In the next step S67, the object having the highest saturation index value is set as a highlight target (candidate). In this case, if the same page contains only an object having a saturation index value α of 0 (zero), it may not be set as a highlight target. Note that it is appropriate for the user to select a color printing mode to highlight objects that have a high saturation index value (hereinafter referred to as vivid color) together with objects of dull color. This is to make it easy to make a judgment.

  Thus, the subroutine of FIG. 6 ends, and the process returns to the control flow of FIG. In step S7 of FIG. 5, the object to be highlighted is highlighted on the display screen of the display unit 220. Here, before explaining step S7, an example in which an object is highlighted in this step will be described.

[Highlighting]
FIG. 7 is a detailed diagram of a display screen in the display unit 220. In the figure, print data to be printed is preflight checked (confirmed before printing) for each page. The D1 column is a screen for preview display of image data for one page of print data, and D2 indicates the boundary between the print area and the margin frame. In the D1 column, a plurality of objects (0b1 to 0b6) in the same page are displayed. In the example shown in the figure, Ob1, Ob3, Ob4, and Ob6 are underlined as objects to be highlighted. In addition, for the object, color information (tag D3, tag D4) is displayed on the display screen together with underlined highlighting. In the example shown in the figure, the color characteristics (dull color or vivid color) are displayed as the color information, but the color information of the object may be displayed.

  The D11 column shows the file name of the print data displayed in the D1 column, and the D12 column shows the page number. The page number to be displayed can be changed by the user pressing the triangular cursor in the D12 column. In D131, the print mode of the displayed page is displayed. The D14 column displays color information and the like of a cursor D20 that can be moved by operating the mouse or the like with the operation unit 221 and an object displayed directly below the cursor D20. D141 in the D14 column is displayed in the RGB format, and the D142 column is displayed in the Y, M, C, Bk format output by the printing apparatus A that outputs. In the D151 field, highlight setting conditions are displayed.

  In this way, when print data to be printed is displayed for each page, as shown in FIG. 7, an object that may be recognized as being dull in color and improperly monochrome is highlighted. This prevents inappropriate recognition that the user prints in the monochrome print mode even though the print mode is the full color print mode. In addition, the print mode to be output can be easily determined by highlighting the dull color and displaying the color information (tag D3) and also highlighting the vivid color.

  FIG. 8 is a diagram showing a subroutine of step S7 highlighting processing in FIG. The subroutine is a process executed by software processing by the cooperation of programs stored in the CPU 201 and the ROM 202 of the terminal device P.

  In step S71, the object set as the highlight target in step S6 of FIG. 5 is extracted for each page to be printed. In step S72, the extracted objects are ranked according to the saturation index value α. In step S73, the highlight display condition is acquired. In the example shown in FIG. 7 described above, the highlighting type is “underlined”, and the number of displays is set to “lower 3” and “higher 1”.

  The setting of the highlighting condition can be changed. When the highlighting condition is changed, by pressing the above-described highlighting setting change button D15 of FIG. 7, the display screen is switched to the detailed view of the display screen shown in FIG. In the figure, the type of highlighting is changed by pressing the D44 to D44 buttons, and the number of highlighting is changed by operating the D45 and D46 buttons.

  Here, “underline” is to draw a line below the text or image data, and “pop-up” is to display the highlighted object as a separate window on the display screen. . Inverted display is to invert luminance information (also referred to as negative / positive inversion). “Hatching” is to fill a target object with a pattern such as shading or diagonal lines.

  Note that a plurality of types of highlighting can be selected, and the number lower than the number of highlighting can be set to display all the numbers set as highlighting targets in step S65. Here, “lower” means that the saturation information value is smaller (more dull color), and “upper” means that the saturation information value is larger. For example, in the case of the lower three settings, up to three objects counted from the smallest saturation information value among the objects ranked in step S72 are highlighted.

  In step S74, an object that matches the set highlight display condition is highlighted on the display screen of the display unit 220 as shown in FIG. Thus, the subroutine of FIG. 8 ends, and the process returns to the control flow of FIG.

[Change print mode]
In step S8 of FIG. 5, the print mode output for each page is changed as necessary (step S8: print mode change step). FIG. 10 is a detailed diagram of a display screen in the display unit 220 that performs the print mode change. This figure is a screen displayed by pressing the print mode change button D13 in FIG.

  Since the current printing mode is full color printing, the full color printing D51 button is shaded. When changing to monochrome printing, it can be changed by pressing the monochrome printing button D52. By selecting the radio button D54, the target range for changing the print mode can be switched between page units or all page ranges. When making a change, the change is completed by pressing the confirm button D55.

  When the confirmation of the print mode for all the print pages is completed, the printing apparatus A performs printing on the paper according to the print mode set for each page in step S8 when the user gives a print instruction (step S9). ) End (end).

  In the present embodiment, the example in which the program is executed by the terminal device P has been described. However, the present invention is not limited to this, and the printing device A may execute the program. In this case, when printing is performed based on the image data read from the image reading unit of the printing apparatus A or the print data received from the network N, the software by the cooperation of the programs stored in the CPU 101 and the ROM 102 of the printing apparatus A The control shown in FIG. 5 and the like is executed by the wear processing, and the same highlighting as that shown in FIG.

An example of the color space has been described using RGB luminance information, but is not limited thereto, and may be a color space represented by L ^* a ^* b ^* or L ^* C ^* h ^* . Further, in this case, the saturation C ^* may be used as the saturation index value.

  In this way, the print data determined to be unsuitable for monochrome printing is divided into objects, and based on the color of the divided objects, it is determined whether or not each object is to be highlighted and displayed on the display screen. Thus, it is possible to obtain a printing system program that can prevent inappropriate recognition of an output print mode. Furthermore, it is possible to easily determine the print mode to be output by displaying the color information together at the time of highlighting. Furthermore, it is possible to easily change the print mode by having a print mode change step for inputting whether or not a print page including an object determined to be not suitable for monochrome print is changed to monochrome print for each page. Is possible.

1 is a diagram illustrating a configuration of a printing system according to an embodiment of the present invention. 3 is a block diagram of a control system in the printing apparatus A. FIG. 3 is a block diagram of a control system in the terminal device P. FIG. 2 is a central sectional view of the printing apparatus A. FIG. 6 is a flowchart illustrating processing of the printing system. It is a subroutine of the flowchart of FIG. 5 is a detailed view of a display screen in the display unit 220. FIG. It is a subroutine of the flowchart of FIG. 5 is a detailed view of a display screen in the display unit 220. FIG. 5 is a detailed view of a display screen in the display unit 220. FIG.

Explanation of symbols

P terminal device A printing device 101, 201 CPU
102, 202 ROM
103, 203 RAM
104, 204 HDD
105, 205 Communication I / F
106 Print Controller 107, 207 System Bus 108 Image Processing Unit 110 Image Reading Unit A1 Image Forming Unit 120, 220 Display Unit 121, 221 Operation Unit

Claims (8)

A program of a printing system that has at least two printing modes of monochrome printing and full-color printing and prints on paper based on print data,
A print mode determination step for determining whether monochrome printing is appropriate as a print mode for printing the print data; and
An analysis step of analyzing the color for each object for the print data determined to be not suitable for monochrome printing in the print mode determination step;
Based on the color of the object analyzed in the analysis step, an extraction step for extracting an object to be highlighted,
Have a, a display step of highlighting Obujeto which was highlighted object in the extraction step on a display screen,
The highlighting performs at least one of pop-up, underline, luminance information inversion, and hatching on a target object . In the analyzing step, it is determined whether monochrome printing is appropriate for the printing system for each object by analyzing the color for each object,
2. The object of claim 1, wherein, in the extracting step, an object whose chroma information of the analyzed color is not more than a predetermined value among objects determined to be not suitable for monochrome printing in the analyzing step is highlighted. The printing system program described.   3. The printing system program according to claim 1, wherein in the extraction step, an object having the highest color saturation analyzed among objects in a page to be printed is highlighted. A print mode changing step for inputting, by an operating means, whether or not to change a print page including an object determined to be not suitable for monochrome printing in the analysis step to monochrome printing for each page;
A printing step for monochrome printing of the page based on the input in the printing mode changing step;
The printing system program according to any one of claims 1 to 3, further comprising:   5. The printing system program according to claim 1, wherein in the display step, an object is highlighted and color information of the object is displayed on a display screen. Wherein in the display step, an object that the highlighted object in the page, based on the saturation of the object prioritizing, according to claim 1, characterized in that to highlight in the order based on priority Printing system program. A printing system having at least two printing modes of monochrome printing and full color printing and printing on paper based on print data,
The printing system has display means and control means,
The control means analyzes the color for each object of the print data determined to be not suitable for monochrome printing, extracts an object to be highlighted based on the analyzed object color, and selects the object to be highlighted. Highlight on the display screen of the display means ,
The printing system according to claim 1, wherein the highlighting performs at least one of a process of pop-up, underlining, luminance information reversal, and hatching on a target object . The control means prioritizes the object to be highlighted in the page based on the saturation of the object when highlighting the object to be highlighted on the display screen of the display means. The printing system according to claim 7, wherein highlighting is performed in an order based on the printing method.

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