Color selection display device, color selection display method, and color selection display program

Abstract

To provide a color selection display device capable of easily selecting a desired color which is expressed in a print material in accordance with a combination of a type of a print machine and a type of a printed medium.SOLUTION: A storage part 23 stores a color number and color information of a color matching data corresponded to a combination of a type of a print machine and a type of a printed medium that are selected. A display control part 211 displays a plurality of unit divisions corresponded to each color in the color matching data on a display part 25 in order in accordance with the color number, and displays each unit division with a color in accordance with the color information of each color. The display control part 211 replaces and displays the plurality of unit divisions to the display part 25 in responce to an instruction for replacing them in order of a color phase, a color saturation, and a brightness of each color.SELECTED DRAWING: Figure 14

Description

[Technical field]

[0001] The present invention relates to a color selection display device, a color selection display method, and a color selection display program. [Background technology]

[0002] When designing a given printed matter using a plurality of colors, the colors may be selected with reference to a color palette. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4914834 [Patent Document 2] JP 2006-350066 A Summary of the Invention [Problem to be solved by the invention]

[0004] The colors that appear in a printout vary depending on the combination of the type of printing machine and the type of print medium. Therefore, even if you select each color by referring to a color palette and design a printout, the desired color may not appear in the printout. If the desired color does not appear in the printout, you need to adjust the color with a color mixer and print again to check whether the desired color has been expressed.

[0005] The present invention aims to provide a color selection display device, a color selection display method, and a color selection display program that can easily select the desired color to be expressed in a printed matter depending on the combination of the type of printing machine and the type of printing medium. [Means for solving the problem]

[0006] The present invention provides a color selection display device comprising: a storage unit that stores the color numbers and color information of color matching data corresponding to a selected combination of a type of printing press and a type of printing medium in a color matching database in which color matching data is set for each combination of a type of printing press and a type of printing medium, the color numbers and color information of color matching data including color numbers indicating each color of a plurality of colors of ink used corresponding to a combination of a type of printing press and a type of printing medium, and in which each color within the color gamut of process printing and each color outside the color gamut of process printing are registered as spot colors; and a display control unit that displays on a display unit a plurality of unit sections corresponding to each of the colors in the color matching data stored in the storage unit in an order according to the color numbers and displays each unit section in a color according to the color information of each color, the display control unit sorting and displaying the plurality of unit sections on the display unit in response to an instruction to sort in the order of any of the hue, saturation, and brightness of the colors in the color matching data stored in the storage unit.

[0007] The present invention provides a color selection display method, which includes color numbers indicating each color of a plurality of colors of ink used corresponding to a combination of a type of printing press and a type of printing medium and color information specifying each of the colors corresponding to each color number, and which is set for each combination of the type of printing press and the type of printing medium, and in which each color within the color gamut of process printing and each color outside the color gamut of process printing are registered as spot colors, the color numbers and color information of the color matching data corresponding to a selected combination of the type of printing press and the type of printing medium are stored in a storage unit, and a plurality of unit sections corresponding to each of the colors in the color matching data stored in the storage unit are displayed on a display unit in an order according to the color numbers, each unit section is displayed in a color according to the color information of each of the colors, and in response to an instruction to rearrange the order of any of the hue, saturation, and brightness of the colors in the color matching data stored in the storage unit, the plurality of unit sections are rearranged and displayed on the display unit.

[0008] The present invention provides a color selection display program that causes a computer to execute the steps of: accessing a storage unit that stores the color numbers and color information of color matching data corresponding to a selected combination of a type of printing press and a type of printing medium in a color matching database that sets color matching data for each combination of a type of printing press and a type of printing medium, the color numbers indicating each color of a plurality of colors of ink used corresponding to a combination of a type of printing press and a type of printing medium, and color information specifying each of the colors corresponding to each color number, and in which each color within the color gamut of process printing and each color outside the color gamut of process printing are registered as spot colors, for each combination of the type of printing press and the type of printing medium; displaying a plurality of unit sections corresponding to each of the colors in the color matching data stored in the storage unit on a display unit in an order according to the color numbers, and displaying each unit section in a color according to the color information of each color; and sorting and displaying the plurality of unit sections on the display unit in response to an instruction to sort the colors in the color matching data stored in the storage unit in any order of hue, saturation, or brightness. Effect of the Invention

[0009] According to the color selection display device, color selection display method, and color selection display program of the present invention, the desired color to be expressed in the printed matter can be easily selected according to the combination of the type of printing machine and the type of printing medium. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram showing a first example of the configuration of a printing system including a display device for color selection according to an embodiment. [Diagram 2] FIG. 2 is a block diagram showing a second example of the configuration of a printing system including a display device for color selection according to an embodiment. [Diagram 3] FIG. 3 is a conceptual diagram showing a toning database used in the printing system shown in FIGS. [Figure 4]FIG. 4 is a conceptual diagram showing a process printing color table used in the printing system shown in FIGS. [Diagram 5] FIG. 5 is a diagram showing an example of a color selection window that is displayed on a display unit by a display device for color selection according to an embodiment. [Figure 6] FIG. 6 is a diagram showing an example of a state in which a first color has been selected in the color selection window shown in FIG. [Figure 7] FIG. 7 is a diagram showing an example of a state in which six colors are selected in the color selection window shown in FIG. [Figure 8] FIG. 8 is a diagram showing an example of a color replacement palette used to replace colors outside the color gamut of the process printing in FIG. [Figure 9A] FIG. 9A is a diagram showing a state in which two colors outside the color gamut of the process printing in FIG. 7 are replaced with colors within the color gamut by the color replacement palette shown in FIG. [Figure 9B] FIG. 9B is a diagram showing a state in which two colors outside the color gamut of the process printing in FIG. 7 are process-converted using the color replacement palette shown in FIG. [Figure 10] FIG. 10 is a diagram showing an example of a main palette for turning on or off a filter for a unit block displayed in the color display area of ​​a color selection window. [Figure 11] FIG. 11 is a diagram showing an example of a state in which a filter for a unit block is turned on and a setting is made so that a plurality of unit blocks are sorted by hue. [Figure 12] FIG. 12 is a diagram showing an example of a state in which a filter for a unit block is turned on, red is selected as the color type, and multiple unit blocks are sorted by hue, limited to colors within the color gamut of process printing. [Figure 13] FIG. 13 shows an example of a state in which a filter for a unit block is turned on, colors are limited to those within the color gamut of process printing, the saturation range is set to low saturation, the lightness range is set to high lightness, and multiple unit blocks are sorted by hue. [Figure 14] FIG. 14 is a block diagram showing a functional configuration of a color selection display device according to an embodiment. [Figure 15A] FIG. 15A is a partial flowchart showing a process executed by a computer according to a display method for color selection according to an embodiment or a display program for color selection according to an embodiment. [Figure 15B] FIG. 15B is a partial flowchart following FIG. 15A, showing a process executed by a computer according to a display method for color selection according to an embodiment or a display program for color selection according to an embodiment. [Figure 15C] FIG. 15C is a partial flowchart following FIG. 15B, showing a process executed by a computer according to a display method for color selection according to an embodiment or a display program for color selection according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a color selection display device, a color selection display method, and a color selection display program according to an embodiment will be described with reference to the accompanying drawings. First, a printing system including a color selection display device according to an embodiment will be described with reference to Figs. 1 to 4.

[0012] Fig. 1 shows a first configuration example of a printing system. In Fig. 1, data server 1 includes a color matching database storage unit 11, a process printing color table storage unit 12, and a transmission unit 13. A color matching database is stored in color matching database storage unit 11. A process printing color table is stored in color table storage unit 12. For example, the applicant or an affiliated company of the present application uploads the color matching database and the process printing color table to data server 1, and stores the color matching database and the process printing color table in color matching database storage unit 11 and color table storage unit 12, respectively.

[0013] FIG. 3 conceptually illustrates a color-matching database. The color-matching database includes a plurality of sets of color-matching data corresponding to a combination of a type of printing machine (a type of printing method) and a type of printing medium. As illustrated in FIG. 3, the plurality of sets of color-matching data includes, for example, color-matching data corresponding to each of film / reverse printing gravure printing, UV offset printing for coated paper, flexographic printing for liner paper, and oil-based offset printing for fine paper. The plurality of sets of color-matching data may include film / surface printing gravure printing, film / reverse printing flexographic printing, film / surface printing flexographic printing, gravure printing for coated paper, UV flexographic printing for coated paper, gravure printing for thin paper, flexographic printing for thin paper, oil-based offset printing for thin paper, UV flexographic printing for plastic, screen printing for plastic, and gravure printing for aluminum, which are not illustrated in FIG. 3. The color-matching database may include at least one set of color-matching data.

[0014] In each set of color-matching data, color information specifying each color and an ink recipe for each color are set in correspondence with color numbers indicating each of the multiple ink colors. The color information is, for example, a spectral value. By using spectral values ​​as color information, the color of an object can be expressed regardless of metamerism, in which the color of an object appears different depending on the observation conditions. The ink recipe represents the blending ratio of multiple color components to realize each color, and the sum of the blending ratios of the multiple color components is 100%. In the color-matching data, each color within the color gamut of process printing and each color outside the color gamut of process printing are registered as spot colors.

[0015] FIG. 4 conceptually illustrates a color table for process printing. In the color table for process printing, color gamut information is set that indicates a color gamut that can be expressed by process printing, corresponding to, for example, film / reverse printing gravure printing, UV offset printing for coated paper, flexographic printing for liner paper, and oil-based offset printing for fine paper. The color table for process printing may include color gamut information corresponding to film / surface printing gravure printing, film / reverse printing flexographic printing, film / surface printing flexographic printing, gravure printing for coated paper, UV flexographic printing for coated paper, gravure printing for thin paper, flexographic printing for thin paper, oil-based offset printing for thin paper, and UV flexographic printing for plastic, which are not illustrated in FIG. The color table for process printing may include color gamut information for process printing that corresponds to the color matching data set in the color matching database.

[0016] The ICC profile established by the International Color Consortium (ICC) can be used as the color gamut information set in the process printing color table. The color gamut range can be determined from the color gamut information. * a * b * Color space L * Value, a * Value, b * The Lab values ​​(hereafter abbreviated as Lab values) can be converted to C (cyan), M (magenta), Y (yellow), and K (black) values ​​(hereafter abbreviated as CMYK values). The Lab values ​​may be converted to five to seven color values ​​by adding at least one of orange, green, and blue to the CMYK values.

[0017] Returning to FIG. 1, the user terminal 2 includes a central processing unit 21 (hereinafter, CPU 21), a transmission / reception unit 22, a storage unit 23, a non-transitory storage medium 24, a display unit 25, and an operation unit 26. The user terminal 2 can be configured by a computer such as a personal computer. The transmission / reception unit 22 receives the color matching data and the color gamut information of the process printing corresponding to the color matching data, which are selected by the operation unit 26 from among a plurality of sets of color matching data and transmitted from the transmission unit 13 of the data server 1. The color matching data received by the transmission / reception unit 22 need only be each color number and color information corresponding to each color number, and the transmission / reception unit 22 does not need to receive the ink recipe corresponding to each color number. However, the transmission / reception unit 22 may receive each color number, color information corresponding to each color number, and ink recipe corresponding to each color number.

[0018] The storage unit 23 stores the received color matching data (each color number and each color information) and color gamut information. The storage unit 23 may be a temporary storage unit. The display unit 25 is, for example, a liquid crystal panel. The display unit 25 may be an external component attached to the user terminal 2. The operation unit 26 is, for example, a mouse, a keyboard, etc.

[0019] The sending unit 13 and the sending / receiving unit 22 may send and receive the color matching data and color gamut information by email, or the sending / receiving unit 22 may download the color matching data and color gamut information from the sending unit 13 via a network such as the Internet. For example, the color matching data and color gamut information may be stored in a portable storage medium such as a USB memory, and the user terminal 2 may read the color matching data and color gamut information from the storage medium. The method by which the user terminal 2 obtains the color matching data and color gamut information is arbitrary.

[0020] A color selection display program and a DTP (Desktop Publishing) editing program are stored in the non-transitory storage medium 24. The CPU 21 executes the color selection display program to display a color selection window for selecting a color on the display unit 25. As will be described in detail later, the user can select multiple colors to be used in the print on the color selection window displayed on the display unit 25. The CPU 21 executes the DTP editing program to create design data for the print using the multiple colors selected by executing the color selection display program.

[0021] In the design data of the printed matter, color information corresponding to each color number is expressed in Lab values ​​for spot colors outside the color gamut of process printing, and is expressed in CMYK values ​​for colors within the color gamut of process printing that are not spot colors but are to be expressed by process printing. In printing of a company logo or trademark, even colors within the color gamut may be printed as spot colors to reduce printing variables. Therefore, not all colors within the color gamut are necessarily printed by process printing. The CPU 21 executes a color selection display program to convert the spectral values ​​of spot colors into Lab values, and when colors within the color gamut are to be expressed by process printing, the spectral values ​​are converted into Lab values ​​and further converted into CMYK values. As an example of the DTP editing program, Adobe Illustrator, a graphic design software sold by Adobe Inc., can be used.

[0022] The color mixing site 3 is provided with a mixer control terminal 30 and an ink mixer 300. The mixer control terminal 30 includes a central processing unit 31 (hereinafter, CPU 31), a receiving unit 32, a memory unit 33, a non-transitory storage medium 34, a display unit 35, and an operation unit 36. The mixer control terminal 30 can be configured with a computer such as a personal computer. The receiving unit 32 receives design data transmitted from the transmitting / receiving unit 22 of the user terminal 2. The memory unit 33 stores the received design data. The memory unit 33 may be a temporary memory unit. The display unit 35 may be an external component attached externally to the mixer control terminal 30. The operation unit 36 ​​is a mouse, a keyboard, or the like.

[0023] A file creation program and an ink formulation program are stored in the non-transitory storage medium 34. The CPU 31 executes the file creation program to create an ink formulation file used by the ink formulation machine 300 to formulate ink. When creating the ink formulation file, the CPU 31 receives, from the transmission unit 13 of the data server 1, ink formulas that correspond to the color numbers of the multiple colors in the received design data and that are stored in the color matching database storage unit 11. The storage unit 33 stores the received ink formulas. By the CPU 31 receiving the ink formulas that correspond to each color number of the multiple colors in the design data, it is possible to create an ink formulation file for the ink formulation machine 300 to formulate ink.

[0024] The CPU 31 executes the ink formulation program and controls the ink formulation machine 300 to formulate ink based on the created ink formulation file. When the CPU 31 executes the file creation program or the ink formulation program, necessary information may be displayed on the display unit 35, and the operation unit 36 ​​may be operated as necessary.

[0025] In the example shown in Fig. 1, the CPU 31 executes both the file creation program and the ink formulation program, but the CPU that executes the file creation program and the CPU that executes the ink formulation program may be provided separately. That is, in the example shown in Fig. 1, the blender control terminal 30, which is one computer, executes both the file creation program and the ink formulation program, but the computer that executes the file creation program and the computer that executes the ink formulation program may be provided separately. In this case, the two computers are connected, for example, by a local network and operate in cooperation with each other.

[0026] The ink formulation machine 300 formulates ink for printing design data under the control of the CPU 31 that executes an ink formulation program. The ink formulated by the ink formulation machine 300 is provided to the printing machine 5.

[0027] The transmitting / receiving unit 22 transmits the design data to the platemaking site 4. The transmitting / receiving unit 22 may transmit the design data to the platemaking site 4 by email, or the platemaking site 4 may download the design data from the user terminal 2 via a network. A portable storage medium may be used to transfer the design data from the user terminal 2 to the platemaking site 4. The platemaking site 4 produces plates for process printing of C, M, Y, and K and plates for, for example, two spot colors based on the acquired design data. The plates produced at the platemaking site 4 are provided to the printing press 5. It is assumed that the printing press 5 is a printing press that can print in six colors, including four colors for process printing and a maximum of two spot colors.

[0028] The printing machine 5 uses a plate provided from the plate making site 4 and ink provided from the ink mixer 300 to print on a print medium such as coated paper, thereby producing a printed matter.

[0029] FIG. 2 shows a second configuration example of the printing system. In FIG. 2, the same parts as those in FIG. 1 are given the same reference numerals, and their explanations are omitted. In FIG. 2, the data server 1 includes a transmitting / receiving unit 13' instead of the transmitting unit 13, and the mixer control terminal 30 includes a transmitting / receiving unit 32' instead of the receiving unit 32. In addition to the file creation program and the ink mixing program, a color matching database creation program is stored in the non-transitory storage medium 34. In the second configuration example, the color matching database is created by the CPU 31 executing the color matching database creation program at the color matching site 3. The transmitting / receiving unit 32' transmits the color matching database to the transmitting / receiving unit 13'. In this way, in the second configuration example, the color matching database is uploaded from the color matching site 3 to the data server 1.

[0030] The color matching database storage unit 11 stores the color matching database received by the transmission / reception unit 13'. The process printing color table stored in the process printing color table storage unit 12 may be uploaded to the data server 1 by the applicant or its affiliates, as in the first configuration example, or may be uploaded from the color matching site 3 to the data server 1.

[0031] As in the first configuration example, the transmitting / receiving unit 22 receives the color matching data and the color gamut information for process printing from the data server 1. As indicated by the two-dot chain line, the user terminal 2 may directly obtain the color matching data (or the color matching data and the color gamut information for process printing) from the color matching site 3.

[0032] In the second configuration example as well, the user terminal 2 transmits design data of a printed matter to the color matching site 3 and the plate making site 4. The color matching site 3 mixes ink for printing the design data and provides it to the printing press 5. The plate making site 4 produces a plate for printing the design data and provides it to the printing press 5. The printing press 5 uses the plate provided by the plate making site 4 and the ink provided by the ink mixer 300 to print on a printing medium to create a printed matter.

[0033] 5 to 13, the color selection window displayed on the display unit 25 and how to select multiple colors to be used in the printout on the color selection window will be described in detail. It is assumed that the user terminal 2 acquires each color number and each color information and color gamut information of the color matching data corresponding to the film / reverse printing gravure printing from the data server 1.

[0034] FIG. 5 shows an example of a color selection window 60 displayed on the display unit 25. The color selection window 60 is configured to allow a color to be selected taking into consideration how a person with color vision deficiency sees colors. Here, an overview of color vision deficiency will be described. The retina of the human eye contains photoreceptor cells necessary for people to distinguish the shape and color of an object. The photoreceptor cells include rods for recognizing light and dark, and cones for recognizing color. The cones include L cones for recognizing R (red), M cones for recognizing G (green), and S cones for recognizing B (blue).

[0035] If a person has all the L, M, and S cones in the photoreceptor cells, they can recognize the three primary colors R, G, and B, and can normally see the colors represented by the three primary colors. However, if some cones are absent, they cannot normally see colors. Color vision deficiency in which the L cones are absent and the person is unable to recognize R is called protanopia (P type color vision), color vision deficiency in which the M cones are absent and the person is unable to recognize G is called deuteranopia (D type color vision), and color vision deficiency in which the S cones are absent and the person is unable to recognize B is called tritanopia (T type color vision).

[0036] As shown in FIG. 5, the color selection window 60 has a selection section 61 for selecting normal color vision, P type, D type, or T type color vision, a selected color display area 62 for displaying the selected color, and a color display area 63 for displaying each color of the data for color adjustment for each unit section 631. If normal color vision is selected in the selection section 61, the CPU 21 displays the color number of each color and each color seen by a person with normal color vision in each unit section 631 of the color display area 63. If P type color vision is selected in the selection section 61, the CPU 21 displays the color number of each color and each color seen by a person with P type color vision abnormality in each unit section 631 of the color display area 63. Here, general color vision is selected. The data for color adjustment has many colors, for example, 1000 colors. If the scroll bar 64 is operated, the CPU 21 sends the colors to be displayed in the color display area 63 in order.

[0037] Based on the process printing color gamut information corresponding to the toning data, the CPU 21 judges whether the color to be displayed in each unit block 631 is a color within the process printing color gamut or a spot color outside the color gamut. In accordance with the judgment result, the CPU 21 adds a first mark 632 to each unit block 631 if it is the former, and adds a second mark 633 if it is the latter.

[0038] The color selection window 60 has a main palette 65, a user palette 66, and a color replacement palette 67 adjacent to a scroll bar 64. Fig. 5 shows a state in which the user palette 66 is selected and positioned at the top, making the user palette 66 visible. The user palette 66 lists one or more colors selected by the user in the color display area 63. The user palette 66 has a column displaying the color number, a column indicating whether or not to set a spot color, and columns displaying each color as seen by a person with normal color vision and by a person with P-type, D-type, or T-type color vision deficiency.

[0039] It is preferable to set in the CPU 21 that the printing machine 5 is a printing machine capable of printing a maximum of two spot colors. Here, the printing machine 5 is set in the CPU 21 as a printing machine capable of printing a maximum of two spot colors. Therefore, the CPU 21 displays the maximum number of colors of the printing machine 5 (here, six) in the color selection window 60, for example, above the main palette 65, the user palette 66, and the color replacement palette 67. When the user selects a color in the color display area 63, the CPU 21 displays the current number of colors.

[0040] 6, it is assumed that the user selects a color with color number CF10001. The CPU 21 displays the selected color, color number CF10001, in selected color display area 62. The CPU 21 writes color number CF10001 in the color number column of user palette 66. The CPU 21 displays, in rectangular area 661, each color seen by a person with normal color vision, and each of P-, D-, and T-type color vision deficiencies, corresponding to color number CF10001 in user palette 66.

[0041] The CPU 21 displays a check box 662 indicating whether or not to set a spot color in the column indicating whether or not to set a spot color in the user palette 66. As described above, each color is registered as a spot color in the toning data regardless of whether it is within or outside the color gamut of the process printing, so that in the initial state when the user selects a color of any color number, a check mark indicating that the color is set as a spot color is added to the check box 662. By providing the check box 662, it is possible to set a color to be printed as a spot color even if it is within the color gamut.

[0042] When the CPU 21 sets any one of the colors as the selected color, it displays the unit sections 631 having a color that a person with any of the P-, D-, and T-type color vision deficiencies cannot distinguish from the selected color as unselectable unit sections 631. As an example, the CPU 21 superimposes an unselectable mark 634 on the unit sections 631 having a color that a person with the color vision deficiency cannot distinguish from the selected color.

[0043] The CPU 21 makes the unit section 631 with the unselectable mark 634 superimposed thereon unselectable, thereby preventing the user from selecting, as the second or subsequent color, a color that a person with color vision deficiency cannot distinguish from the selected color. Therefore, by using the color selection window 60 to select multiple colors that constitute the design data of a printed matter, it is possible to create a printed matter that complies with universal design.

[0044] FIG. 7 shows the user palette 66 in the case where color numbers CF10001, CF10136, CF10145, CF11365, and CF10073 are selected in this order, and then color number CF10192 is selected last. Here, it is assumed that the four colors of color numbers CF10145, CF11365, CF10073, and CF10192 are colors outside the gamut of process printing. The CPU 21 displays identification information 663 indicating that the colors are outside the gamut at positions adjacent to color numbers CF10145, CF11365, CF10073, and CF10192. In the example shown in FIG. 7, the identification information 663 is an exclamation mark. It is sufficient for the identification information 663 to be able to identify whether each selected color is a color within the gamut of process printing or a color outside the gamut. Therefore, identification information indicating that the colors are within the gamut may be displayed on the colors within the gamut.

[0045] In the example shown in FIG. 7, four out-of-gamut colors are selected, so the current number of colors is eight and the printing machine 5 cannot print the colors. In this case, the CPU 21 may display a warning message 664 such as "The selected colors exceed the color limit. Please reduce the number of spot colors." In this case, the user may delete any two of the four out-of-gamut colors and select a new in-gamut color from within the color display area 63, or may use the color replacement palette 67 shown in FIG. 8 to replace the out-of-gamut colors with colors within the gamut. The user may use the color replacement palette 67 shown in FIG. 8 to perform process conversion to convert the out-of-gamut colors into CMYK values ​​printable by process printing.

[0046] FIG. 8 shows a case where the color of color number CF10192 selected last in FIG. 7 is replaced. First, a case where the color of color number CF10192 is replaced with an approximate color will be described. As shown in FIG. 8, the CPU 21 displays a selected color display area 671 showing the color of color number CF10192 and a replacement candidate color display area 672 showing replacement candidate colors, for example, arranged vertically in the color replacement palette 67. The CPU 21 displays a color information display area 673 showing the Lab value, RGB value, and CMYK value of the color of color number CF10192 or the replacement candidate color adjacent to the selected color display area 671 and the replacement candidate color display area 672. The CPU 21 displays the color information of color number CF10192 in the color information display area 673 when the selected color display area 671 is selected, and displays the color information of the replacement candidate color in the color information display area 673 when the replacement candidate color display area 672 is selected.

[0047] The color replacement palette 67 has a tolerance setting section 674 for setting a ΔE value (allowable ΔE value) indicating a color difference allowable for the color of color number CF10192, and for example, the allowable ΔE value is set to 20.000. The allowable ΔE value is a color difference allowable value calculated by the color difference formula CIEDE2000, for example. The CPU 21 extracts colors that satisfy the allowable ΔE value of 20.000 or less from all colors of the toning data, and displays a replacement candidate color list 675. One or more replacement candidate colors are displayed in the replacement candidate color list 675. The replacement candidate color display area 672 displays the color of color number CF10203, which has the smallest ΔE value in the replacement candidate color list 675. If a color other than color number CF10203 is selected in the replacement candidate color list 675, the selected replacement candidate color is displayed in the replacement candidate color display area 672.

[0048] The user compares the color displayed in selected color display area 671 with the color displayed in replacement candidate color display area 672, and, if necessary, displays other colors in replacement candidate color list 675 in replacement candidate color display area 672 to select a final replacement candidate color. For example, when replacement candidate color display area 672 is double-clicked, CPU 21 determines the replacement candidate color as the replacement color. Here, it is assumed that the color with color number CF10203 is determined as the replacement color. When the replacement color is determined, CPU 21 replaces the color with color number CF10192 with the replacement color.

[0049] Assume that the user similarly replaces the color of color number CF10073 shown in FIG. 7 with the color of color number CF10099 using the color replacement palette 67. Then, as shown in FIG. 9A, two of the four out-of-gamut colors in the selected colors displayed in the user palette 66 are replaced with colors within the gamut. In addition, the user unchecks the check boxes 662 for colors with color numbers other than color numbers CF10145 and CF11365, and sets the colors with color numbers other than color numbers CF10145 and CF11365 to be process printed. This makes it possible to select six colors that can be printed by the printing machine 5. Since the CPU 21 displays that the current number of colors is six, the user can easily understand that the printing machine 5 is now ready to print.

[0050] If the CPU 21 does not set that the printing press 5 is a printing press capable of printing a maximum of two spot colors, it is not possible to automatically display the warning message 664 as shown in Fig. 7. However, if the user understands that the printing press 5 is a printing press capable of printing a maximum of two spot colors, he or she can determine whether or not printing is possible on the printing press 5 based on the presence or absence of a check mark in the check box 662 and the number of color numbers to which the identification information 663 has been added. If the user determines that printing is not possible on the printing press 5, he or she can select a replacement candidate color as shown in Fig. 8 and determine the replacement color.

[0051] As shown in FIG. 8, the CPU 21 displays a process conversion instruction button 676 in the color replacement palette 67 to instruct the process conversion of a color outside the color gamut. Here, a case where the color of color number CF10145 is selected as a selected color and the color of color number CF10145 is process converted by pressing the process conversion instruction button 676 will be described as an example. The color of color number CF10145, which is the selected color, is displayed in the selected color display area 671. When the user presses the process conversion instruction button 676, the CPU 21 process converts the color of color number CF10145 into CMYK values ​​by separating the color of color number CF10145 into each value of C, M, Y, and K. The CPU 21 displays the color of color number CF10145 after the process conversion in the replacement candidate color display area 672. The color of color number CF10145, which is a spot color before the process conversion, is slightly different from the color of color number CF10145 after the process conversion.

[0052] The user compares the color displayed in selected color display area 671 with the colors displayed in replacement candidate color display area 672, and when deciding on the process-converted color of color number CF10145 as the replacement color, double-clicks on replacement candidate color display area 672. When the CPU 21 decides on the replacement color, it replaces it with the process-converted replacement color of color number CF10145, which is a spot color.

[0053] Similarly, the user selects the color with color number CF11365 shown in FIG. 7 and presses the process conversion instruction button 676 to process convert the color with color number CF11365. Then, as shown in FIG. 9B, the check boxes 662 are cleared for two colors with color numbers CF10145 and CF11365 among the four out-of-gamut colors in the selected colors displayed in the user palette 66, and the colors are set to be process printed. In addition, the user clears the check boxes 662 for the two colors with color numbers CF10001 and CF10136, and sets the two colors with color numbers CF10001 and CF10136 to be process printed. This allows six selected colors to be printed by the printing machine 5.

[0054] In FIG. 9B, unlike FIG. 9A in which selected colors are replaced with similar colors with different color numbers, the color numbers of all selected colors shown in FIG. 7 are maintained as they are.

[0055] Incidentally, in each of the color-matching data in the color-matching database stored in the color-matching database storage unit 11 as shown in FIG. 3, the colors are not arranged in a specific order and assigned color numbers. Moreover, since each of the color-matching data has a large number of colors, such as 1000 colors, it is not easy for a user to select multiple desired colors from the color display area 63 while considering universal design. In particular, if colors with different hues are randomly arranged in the color display area 63, the task of selecting a desired color becomes complicated. Therefore, the color selection window 60 is configured to be able to sort the colors (unit sections 631) in the color display area 63 by the main palette 65 and to limit the colors to be displayed in the color display area 63.

[0056] 10, the main palette 65 includes a filter setting section 651 for turning a filter on or off, a sort setting section 652 for sorting colors in the color display area 63, and a color selection section 653 for selecting a color type. The main palette 65 also includes a saturation range setting section 654 for setting a saturation range, a brightness range setting section 655 for setting a brightness range, and a color gamut setting section 656 for setting a color gamut. The sort setting section 652 includes an option for sorting colors in order of hue, an option for sorting colors in order of saturation, and an option for sorting colors in order of brightness. The color selection section 653 includes options for color types, such as red, yellow-red, yellow, yellow-green, green, blue-green, blue, blue-purple, purple, and red-purple.

[0057] 10, the saturation range setting section 654 and the brightness range setting section 655 include sliders each consisting of an inwardly pointing triangle that can slide left and right. When the left and right sliders in the saturation range setting section 654 are positioned at the left and right ends, the entire saturation range from the minimum saturation to the maximum saturation is indicated. When the left and right sliders in the brightness range setting section 655 are positioned at the left and right ends, the entire brightness range from the minimum brightness to the maximum brightness is indicated. By moving the sliders in the saturation range setting section 654 and the brightness range setting section 655, it is possible to set a saturation range that is a part of the entire saturation range and a brightness range that is a part of the entire brightness range, respectively.

[0058] If the user selects to turn off the filter in the filter setting section 651, the CPU 21 displays all the colors in the color matching data in the order of the color numbers in the color display area 63. As shown in FIG. 11, it is assumed that the user selects to turn on the filter in the filter setting section 651, selects the hue in the sort setting section 652, and selects all the color types in the color selection section 653. In this case, the CPU 21 rearranges all the unit blocks 631 in the color display area 63 in the order of the hue. The order of the hue means L * C * 11 to 13, the display of the unselectable mark 634 that may be displayed in the unit section 631 in the color display area 63 is omitted.

[0059] In the initial state after switching the filter from off to on in the filter setting section 651, none of the hue, saturation, and brightness are selected in the sort setting section 652, and all color types are selected in the color selection section 653. In the initial state, the saturation range setting section 654 is set to the saturation range from the lowest saturation to the highest saturation, and the brightness range setting section 655 is set to the saturation range from the lowest brightness to the highest brightness. Furthermore, the color gamut setting section 656 is set to the state in which inside the color gamut and outside the color gamut are selected.

[0060] 12, it is assumed that the user selects filter on in the filter setting section 651, selects the hue in the sort setting section 652, selects only red as the color type in the color selection section 653, and limits the color gamut to within the color gamut by the color gamut setting section 656. In this case, the CPU 21 extracts only the unit sections 631 whose color type is red and whose color is within the color gamut from among all the unit sections 631 in the color display area 63, and rearranges them in order of hue.

[0061] According to the color display area 63 shown in FIG. 11 or FIG. 12, the user can easily select a desired color, and a harmonious color arrangement can be achieved. Although not shown in particular, when saturation or brightness is selected in the sort setting section 652, only the unit sections 631 whose color type is red are extracted and rearranged in the order of saturation or brightness, the user can easily select a desired color, and a harmonious color arrangement can be achieved by selecting a plurality of colors. The order of saturation may be from low saturation to high saturation, or from high saturation to low saturation. The system may be configured so that an ascending order or a descending order of saturation can be selected. The order of brightness may be from low brightness to high brightness, or from high brightness to low brightness. The system may be configured so that an ascending order or a descending order of brightness can be selected.

[0062] As shown in Fig. 13, it is assumed that the user sets the saturation range to low saturation by the saturation range setting unit 654 and the lightness range to high lightness by the lightness range setting unit 655. In Fig. 13, the hue is selected by the sort setting unit 652, all color types are selected by the color selection unit 653, and the color gamut is restricted to within the color gamut by the color gamut setting unit 656. In this case, the CPU 21 extracts only the unit blocks 631 that have a color within the saturation range set by the saturation range setting unit 654, a color within the lightness range set by the lightness range setting unit 655, and a color within the color gamut, from among all the unit blocks 631 in the color display area 63, and sorts them in order of hue.

[0063] According to the color display area 63 shown in Fig. 13, the saturation range and the lightness range are limited, so that a uniform and easy-to-see color scheme can be achieved. Although not particularly shown, the saturation range may be set to high saturation by the saturation range setting unit 654, and the lightness range may be set to low lightness by the lightness range setting unit 655. The saturation range may be set to high saturation by the saturation range setting unit 654, and the lightness range may be set to high lightness by the lightness range setting unit 655. The saturation range may be set to low saturation by the saturation range setting unit 654, and the lightness range may be set to low lightness by the lightness range setting unit 655.

[0064] As described above, when the filter is set on using the filter setting unit 651, the unit sections 631 in the color display area 63 can be restricted or rearranged in any combination using the sort setting unit 652, color selection unit 653, saturation range setting unit 654, brightness range setting unit 655, and color gamut setting unit 656.

[0065] When the CPU 21 in the user terminal 2 executes the color selection display program, the user terminal 2 functions as a color selection display device 20 as shown in Fig. 14. The display control unit 211 is a functional configuration obtained by the CPU 21 executing the color selection display program. As described above, the storage unit 23 stores the color number and color information of the color matching data corresponding to the combination of the selected printing press type and the type of print medium from the color matching database. The storage unit 23 also stores color gamut information corresponding to the selected combination of the selected printing press type and the type of print medium from the process printing color table.

[0066] The display control unit 211 displays on the display unit 25 a plurality of unit sections 631 corresponding to each color in the color matching data stored in the storage unit 23 in the order according to the color numbers, and displays each unit section 631 in a color according to the color information of each color. When an instruction is given by the operation unit 26 to rearrange the colors in the color matching data stored in the storage unit 23 in the order of hue, saturation, or brightness, the display control unit 211 responds to the instruction by rearranging and displaying the plurality of unit sections 631 on the display unit 25. With this configuration, the color selection display device 20 allows a desired color to be expressed in a printed matter to be easily selected according to a combination of the type of printing machine and the type of printing medium.

[0067] 12, the user can instruct the operation unit 26 to select a color type from among the multiple colors in the color-matching data. In response to the instruction to select a color type, the display control unit 211 displays some of the multiple unit sections 631 that correspond to the color of the selected type on the display unit 25. This makes it easy for the user to select a desired color, and enables a harmonious color scheme.

[0068] 13, the user can instruct the operation unit 26 to narrow down the colors to at least one of a saturation range within the entire saturation range and a brightness range within the entire brightness range. In response to the instruction to narrow down the saturation range or the brightness range, the display control unit 211 displays some of the unit sections 631 corresponding to the narrowed-down colors among the multiple unit sections 631 on the display unit 25. In this way, a uniform and easy-to-see color scheme can be achieved.

[0069] When any one of the multiple unit sections 631 or some of the unit sections 631 is selected and a predetermined color is set as the selected color, the display control unit 211 may display the unit sections 631 having a color that a person with color vision deficiency cannot distinguish from the selected color as unselectable unit sections 631. As an example, by superimposing an unselectable mark 634 on the unselectable unit sections 631, the user can select the second and subsequent colors from the unit sections 631 having a color that a person with color vision deficiency can distinguish from the selected color. This makes it possible to create design data for printed matter that complies with universal design.

[0070] The display control unit 211 preferably displays identification information 663 for identifying whether each selected color is a color within the color gamut for process printing or a color outside the color gamut, in correspondence with a color number indicating one or more selected colors that have been set. As an example, the display control unit 211 displays identification information 663 in correspondence with a color number indicating a color outside the color gamut for process printing. Note that whether a selected color is a color within the color gamut or a color outside the color gamut can be determined based on the color gamut information of the color table for process printing. In this way, it can be easily determined whether a selected color can be printed by process printing or must be printed as a spot color.

[0071] The display control unit 211 may be configured to replace the selected color with a replacement color as follows. As shown in Fig. 8, when one or more selected colors outside the color gamut of process printing are set, the display control unit 211 displays on the display unit 25 one or more replacement candidate colors having a color similar to the designated selected color among the one or more selected colors outside the color gamut. When any of the one or more replacement candidate colors is determined as a replacement color, the display control unit 211 replaces the designated selected color with the replacement color. The display control unit 211 may display on the display unit 25 a list of replacement candidate colors within a color difference tolerance value set for the designated selected color.

[0072] A color selection display method according to an embodiment, or a process executed by a computer according to a color selection display program according to an embodiment, will be described with reference to the flowcharts shown in FIGS. 15A to 15C.

[0073] In Fig. 15A, when the user terminal 2 starts operating, the CPU 21 stores the color number and color information of the selected toning data and the color gamut information of the process printing in the memory unit 23 in step S1. The CPU 21 determines whether or not an instruction to display the color selection window 60 has been given in step S2. If an instruction to display the color selection window 60 has not been given (NO), the CPU 21 repeats the process of step S2. If an instruction to display the color selection window 60 has been given (YES), the CPU 21 accesses the memory unit 23 in step S3 to acquire information (the color number and color information of the toning data, and the color gamut information of the process printing). The CPU 21 displays the color selection window 60 on the display unit 25 in step S4.

[0074] In step S5, the CPU 21 determines whether or not the filter of the unit section 631 is turned on. If the filter of the unit section 631 is not turned on (NO), the CPU 21 shifts the process to step S22 in Fig. 15C. If the filter of the unit section 631 is turned on (YES), the CPU 21 determines in step S6 whether or not an instruction to rearrange the unit sections 631 in order of hue has been given. If an instruction to rearrange the unit sections 631 in order of hue has not been given (NO), the CPU 21 shifts the process to step S8. If an instruction to rearrange the unit sections 631 in order of hue has been given (YES), the CPU 21 rearranges the unit sections 631 in order of hue in step S7, and shifts the process to step S8.

[0075] In step S8, the CPU 21 determines whether or not an instruction to rearrange the unit blocks 631 in order of saturation has been given. If an instruction to rearrange the unit blocks 631 in order of saturation has not been given (NO), the CPU 21 shifts the process to step S10. If an instruction to rearrange the unit blocks 631 in order of saturation has been given (YES), the CPU 21 rearranges the unit blocks 631 in order of saturation in step S9, and shifts the process to step S10.

[0076] In step S10, the CPU 21 determines whether or not an instruction to rearrange the unit blocks 631 in order of brightness has been given. If an instruction to rearrange the unit blocks 631 in order of brightness has not been given (NO), the CPU 21 shifts the process to step S12 in Fig. 15B. If an instruction to rearrange the unit blocks 631 in order of brightness has been given (YES), the CPU 21 rearranges the unit blocks 631 in order of brightness in step S11, and shifts the process to step S12.

[0077] 15B, the CPU 21 determines in step S12 whether or not an instruction to select a color type has been given. If an instruction to select a color type has not been given (NO), the CPU 21 shifts the process to step S14. If an instruction to select a color type has been given (YES), the CPU 21 displays only the unit sections 631 corresponding to the selected color type in the color display area 63 in step S13, and shifts the process to step S14.

[0078] In step S14, the CPU 21 determines whether or not an instruction to limit the saturation range has been given. If an instruction to limit the saturation range has not been given (NO), the CPU 21 shifts the process to step S16. If an instruction to limit the saturation range has been given (YES), the CPU 21 displays only the unit sections 631 corresponding to the colors in the limited saturation range in the color display area 63 in step S15, and shifts the process to step S16.

[0079] In step S16, the CPU 21 determines whether or not an instruction to limit the lightness range has been given. If an instruction to limit the lightness range has not been given (NO), the CPU 21 shifts the process to step S18. If an instruction to limit the lightness range has been given (YES), the CPU 21 displays only the unit sections 631 corresponding to the colors in the limited lightness range in the color display area 63 in step S17, and shifts the process to step S18.

[0080] In step S18, CPU 21 determines whether the selection within the process printing color gamut has been released. If the selection within the process printing color gamut has not been released (NO), CPU 21 shifts the process to step S20. If the selection within the process printing color gamut has been released (YES), CPU 21 in step S19 displays only unit sections 631 corresponding to colors outside the process printing color gamut in color display area 63, and shifts the process to step S20.

[0081] In step S20, the CPU 21 determines whether the selection of the color outside the process printing gamut has been released. If the selection of the color outside the process printing gamut has not been released (NO), the CPU 21 shifts the process to step S22 in Fig. 15C. If the selection of the color outside the process printing gamut has been released (YES), in step S21, the CPU 21 displays only the unit sections 631 corresponding to the colors within the process printing gamut in the color display area 63, and shifts the process to step S22.

[0082] In FIG. 15C, the CPU 21 determines in step S22 whether or not any of the unit sections 631 has been selected. If any of the unit sections 631 has not been selected (NO), the CPU 21 shifts the process to step S31. If any of the unit sections 631 has been selected (YES), the CPU 21 adds the selected color to the user palette 66 in step S23. In FIG. 15C, the process of displaying the check box 662 and clearing the check mark is omitted. Next, the CPU 21 determines in step S24 whether or not the selected color is outside the color gamut of process printing. If the selected color is not outside the color gamut of process printing (NO), the CPU 21 shifts the process to step S26. If the selected color is outside the color gamut of process printing (YES), the CPU 21 displays the identification information 663, for example, near the color number in step S25.

[0083] In step S26, CPU 21 determines whether any selected color outside the color gamut has been specified. If any selected color outside the color gamut has been specified (YES), CPU 21 determines in step S27 whether a decision has been made to replace the selected color with a replacement color. If a decision has not been made to replace the selected color with a replacement color (NO), CPU 21 transitions the process to step S29. If a decision has been made to replace the selected color with a replacement color (YES), CPU 21 replaces the selected color with the replacement color in step S28, and returns the process to step S26.

[0084] If no selected color outside the color gamut is specified in step S26 (NO), the CPU 21 determines in step S29 whether or not to end the selection of the unit section 631. If the selection of the unit section 631 is not to be ended (NO), the CPU 21 returns the process to step S22. If the selection of the unit section 631 is to be ended (YES), the CPU 21 sets the selected color as the color to be used in the DTP editing program in step S30 and ends the process. The selected color set as the color to be used in the DTP editing program is stored in the memory unit 23. As a result, when the CPU 21 executes the DTP editing program, it is possible to create design data for a printed matter using a plurality of selected colors obtained by executing the color selection display program.

[0085] In step S31, the CPU 21 determines whether or not to close the color selection window 60. If the color selection window 60 is not to be closed (NO), the CPU 21 returns the process to step S5 in Fig. 15A. If the color selection window 60 is to be closed (YES), the CPU 21 ends the process.

[0086] The order of the set of steps S6 and S7, the set of steps S8 and S9, the set of steps S10 and S11, the set of steps S12 and S13, the set of steps S14 and S15, the set of steps S16 and S17, the set of steps S18 and S19, and the set of steps S20 and S21 may be arbitrary.

[0087] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention. [Explanation of symbols]

[0088] 1 Data Server 2. User terminal 3 Color matching site 4 Prepress site 5 Printing machine 11 Color matching database storage unit 12 Color table storage unit for process printing 13 Transmitter 13',22,32' Transmitter / Receiver 20 Color selection display device 21,31 Central Processing Unit 23,33 Storage section 24,34 Non-transitory storage medium 25,35 Display section 26,36 Operation section 32 Receiving section 60 Color Selection Window 61 Selection section 62,671 Selected color display area 63 color display area 64 Scrollbar 65 Main Palette 66 User Palette 67 Color Replacement Palette 211 Display control unit 300 Ink mixer 631 Unit Area 632 First Mark 633 Second Mark 634 Unselectable mark 651 Filter setting section 652 Sort Settings 653 Color Selection 654 Saturation range setting section 655 Brightness range setting section 656 Color Gamut Setting Section 661 Rectangular area 662 Checkbox 663 Identification Information 672 Replacement candidate color display area 673 Color information display section 674 Tolerance setting section 675 Replacement candidate color list 676 Process conversion instruction button

Claims

1. a storage unit for storing the color numbers and color information of the color matching data corresponding to a selected combination of the type of printing press and the type of printing medium in a color matching database that includes color numbers indicating each color of a plurality of ink colors used in accordance with the combination of the type of printing press and the type of printing medium, and color information specifying each of the colors corresponding to each color number, and in which each color within the color gamut of process printing and each color outside the color gamut of process printing are registered as spot colors for each combination of the type of printing press and the type of printing medium; a display control unit that displays a plurality of unit sections corresponding to each of the colors in the color matching data stored in the storage unit on a display unit in an order according to the color numbers, and displays each unit section in a color according to the color information of each of the colors; Equipped with The display control unit, in response to an instruction to rearrange the color data stored in the storage unit in order of any one of hue, saturation, and brightness, rearranges the plurality of unit blocks and displays them on the display unit. Color selection display device.

2. 2. The color selection display device according to claim 1, wherein the display control unit, in response to an instruction to narrow down the colors in the plurality of colors in the color-adjusting data stored in the memory unit to at least one of a saturation range of a full saturation range from the lowest saturation to the highest saturation and a lightness range of a full lightness range from the lowest lightness to the highest lightness, displays on the display unit a portion of the unit sections corresponding to the narrowed-down colors among the plurality of unit sections.

3. 2. The color selection display device according to claim 1, wherein the display control unit, in response to an instruction to select a color type from among the plurality of colors in the color-matching data stored in the memory unit, displays on the display unit a portion of the unit sections corresponding to a color of the selected type from among the plurality of unit sections.

4. The storage unit further stores color gamut information corresponding to the selected combination of the type of printing machine and the type of printing medium in a process printing color table that sets color gamut information indicating the color gamut of the process printing for each combination corresponding to the combination of the type of printing machine and the type of printing medium, The display control unit displays on the display unit, in correspondence with the color number indicating one or more selected colors that have been set, identification information that identifies whether each selected color is within the color gamut of the process printing or outside the color gamut based on the color gamut information of the color table for process printing stored in the memory unit. A color selection display device as described in any one of claims 1 to 3.

5. The display control unit is When one or more selected colors outside the color gamut of the process printing are set, one or more replacement candidate colors having colors that are approximate to the designated selected colors among the one or more selected colors outside the color gamut of the process printing are displayed on the display unit; When any of the one or more replacement candidate colors is determined as a replacement color, the designated selected color is replaced with the replacement color.

5. A color selection display device according to claim 4.

6. A color matching database includes color numbers indicating each color of a plurality of ink colors used in accordance with a combination of a type of printing press and a type of printing medium, and color information specifying each of the colors in accordance with each color number, and registers each color within the color gamut of process printing and each color outside the color gamut of process printing as a spot color, and stores the color numbers and color information of the color matching data corresponding to the selected combination of the type of printing press and the type of printing medium in a storage unit, the color numbers and color information of the color matching data being set for each combination of the type of printing press and the type of printing medium, displaying a plurality of unit sections corresponding to each of the colors in the color-matching data stored in the storage unit on a display unit in an order according to the color numbers, and displaying each unit section in a color according to the color information of each of the colors; In response to an instruction to rearrange the color data stored in the storage unit in order of hue, saturation, or brightness, the plurality of unit blocks are rearranged and displayed on the display unit. Display method for color selection.

7. 7. The color selection display method according to claim 6, wherein in response to an instruction to narrow down the colors among the plurality of colors in the color-matching data stored in the memory unit to at least one of a saturation range of the entire saturation range from the lowest saturation to the highest saturation and a lightness range of the entire lightness range from the lowest lightness to the highest lightness, a portion of the unit sections corresponding to the narrowed-down colors among the plurality of unit sections is displayed on the display unit.

8. 7. The color selection display method according to claim 6, wherein in response to an instruction to select a color type from among the plurality of colors in the color matching data stored in the memory unit, a portion of the unit sections corresponding to the selected color type from among the plurality of unit sections is displayed on the display unit.

9. Further storing in the storage unit color gamut information corresponding to the selected combination of the type of printing press and the type of printing medium, out of a process printing color table in which color gamut information indicating the color gamut of the process printing for each combination is set in correspondence with the combination of the type of printing press and the type of printing medium; A color selection display method according to any one of claims 6 to 8, wherein, in response to the color number indicating one or more selected colors that have been set, identification information is displayed on the display unit that identifies whether each selected color is a color within the color gamut of the process printing or a color outside the color gamut, based on the color gamut information of the process printing color table stored in the memory unit.

10. When one or more selected colors outside the color gamut of the process printing are set, one or more replacement candidate colors having colors that are approximate to the designated selected colors among the one or more selected colors outside the color gamut of the process printing are displayed on the display unit; When any of the one or more replacement candidate colors is determined as a replacement color, the designated selected color is replaced with the replacement color.

10. The color selection display method of claim 9.

11. On the computer, A step of accessing a storage unit that stores the color numbers and color information of the color matching data corresponding to the selected combination of the type of printing press and the type of printing medium in a color matching database that includes color numbers indicating each color of a plurality of ink colors used in accordance with the combination of the type of printing press and the type of printing medium, and color information specifying each of the colors corresponding to each color number, and in which each color within the color gamut of process printing and each color outside the color gamut of process printing are registered as spot colors for each combination of the type of printing press and the type of printing medium; displaying a plurality of unit sections corresponding to each of the colors in the color matching data stored in the storage unit on a display unit in an order according to the color numbers, and displaying each unit section in a color according to the color information of each of the colors; a step of sorting and displaying the plurality of unit sections on the display unit in response to an instruction to sort the colors in the color matching data stored in the storage unit in any order of hue, saturation, or brightness; A color selection display program that executes the above.

12. 12. The color selection display program according to claim 11, further comprising a step of causing the computer to execute a step of displaying on the display unit a portion of unit sections corresponding to the narrowed-down colors among the plurality of unit sections in response to an instruction to narrow down the colors among the plurality of colors in the color-matching data stored in the memory unit to at least one of a portion of a saturation range of a full saturation range from the lowest saturation to the highest saturation and a portion of a lightness range of a full lightness range from the lowest lightness to the highest lightness.

13. The color selection display program according to claim 11, further comprising a step of causing the computer to execute a step of displaying, on the display unit, a portion of the unit sections corresponding to the selected type of color among the plurality of unit sections in response to an instruction to select a type of color from among the plurality of colors in the color-matching data stored in the storage unit.

14. The storage unit further stores color gamut information corresponding to the selected combination of the type of printing machine and the type of printing medium in a process printing color table that sets color gamut information indicating the color gamut of the process printing for each combination corresponding to the combination of the type of printing machine and the type of printing medium, A color selection display program according to any one of claims 11 to 13, further causing the computer to execute a step of displaying, on the display unit, identification information that identifies whether each selected color is a color within the color gamut of the process printing or a color outside the color gamut, based on the color gamut information of the process printing color table stored in the memory unit, in correspondence with the color number indicating one or more selected colors that have been set.

15. The computer includes: When one or more selected colors outside the color gamut of the process printing are set, displaying on the display unit one or more replacement candidate colors having colors that are approximate to the designated selected colors among the one or more selected colors outside the color gamut of the process printing; when any of the one or more replacement candidate colors is determined as a replacement color, replacing the designated selected color with the replacement color; 15. The color selection display program according to claim 14, further comprising:

Images