Printing device, control method thereof, computer program, and printing system

Abstract

To provide a printer which can improve accuracy of simulation of a print image.SOLUTION: A printer 10 comprises a display device 14 and a control unit 50. The control unit 50 executes: first acquisition operation of acquiring first image data for printing a first image F on a printing medium A with ink discharged from a nozzle 24; first color conversion operation of generating second image data by performing color conversion on the first image data; second color conversion operation of generating third image data by performing color conversion on the second image data according to a display condition when the first image F is displayed on the display device 14; and display operation of displaying a second image H on the display device 14 on the basis of the third image data. The first color conversion operation performs color conversion according to any one of the printing medium A, the printing condition and the combination of the printing medium A and the printing condition.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a printing apparatus, a control method thereof, a computer program, and a printing system. [Background technology]

[0002] As a conventional printing device, for example, the image processing device disclosed in Patent Document 1 is known. This image processing device performs color correction processing on image data according to the output object observation environment when observing a printed image printed by a printer and the display object observation environment when observing a simulated image displayed on a monitor. The image processing device then displays the simulated image on the monitor using the image data that has been subjected to the color correction processing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-134478 Summary of the Invention [Problem to be solved by the invention]

[0004] In the image processing device, color correction is performed on the image data based on the viewing environment of the printed image and the simulated image, and in this viewing environment, it may be difficult to sufficiently simulate the printed image.

[0005] In view of the above, an object of the present invention is to provide a printing apparatus, a control method thereof, a computer program, and a printing system that can improve the accuracy of simulation of a printed image. [Means for solving the problem]

[0006] A printing device according to one aspect of the present invention comprises a display device and a control unit, wherein the control unit performs a first acquisition operation to acquire first image data for printing a first image on a printing medium using ink ejected from nozzles; a first color conversion operation to perform color conversion on the first image data to generate second image data; a second color conversion operation to perform color conversion on the second image data to generate third image data according to the display conditions when the first image is displayed on the display device; and a display operation to display the second image on the display device based on the third image data, wherein the first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions.

[0007] A control method for a printing device according to one aspect of the present invention causes a printing device equipped with a display device to perform the following operations: a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation for performing color conversion on the second image data to generate third image data according to the display conditions when the first image is displayed on the display device; and a display operation for displaying the second image on the display device based on the third image data, wherein the first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions.

[0008] A computer program according to one aspect of the present invention causes a computer of a printing device equipped with a display device to perform the following operations: a first acquisition operation to acquire first image data for printing a first image on a printing medium using ink ejected from nozzles; a first color conversion operation to perform color conversion on the first image data to generate second image data; a second color conversion operation to perform color conversion on the second image data to generate third image data according to the display conditions when the first image is displayed on the display device; and a display operation to display the second image on the display device based on the third image data, wherein the first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions.

[0009] A printing device system according to one aspect of the present invention is a printing system comprising an image processing device and a printing device having nozzles that eject ink, wherein the image processing device comprises a display device and a control unit, and the control unit performs a first acquisition operation to acquire first image data for printing a first image on a printing medium using ink ejected from the nozzles, a first color conversion operation to perform color conversion on the first image data to generate second image data, a second color conversion operation to perform color conversion on the second image data to generate third image data according to display conditions when the first image is displayed on the display device, a display operation to display the second image on the display device based on the third image data, and a print data generation operation to generate print data according to the color gamut of the printing device based on the first image data, and the printing device performs a printing operation to print the first image on the printing medium based on the print data, and the first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a printing device, a control method thereof, a computer program, and a printing system that can improve the accuracy of simulation of a print image.

[0011] The above and other objects, features, and advantages of the present invention will become apparent from the following detailed description of preferred embodiments, which proceeds with reference to the accompanying drawings. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a schematic diagram showing a printing device according to an embodiment and a modification of the present invention, as viewed from above. [Figure 2] FIG. 2 is a schematic view of the head of FIG. 1 as seen from below. [Figure 3] FIG. 3 is a block diagram showing the functional configuration of the printing device according to the first and second embodiments and their modifications. [Figure 4] FIG. 4 is a flowchart showing an example of a control method for a printing device according to the first embodiment and the first to sixth modifications. [Figure 5] FIG. 5 is a diagram showing a first image to be printed on a print medium. [Figure 6] Fig. 6(a) is a diagram showing a patch chart printed on a printing medium, and Fig. 6(b) is a diagram showing a patch chart displayed on a display device. [Figure 7] Figure 7(a) is a graph showing the ab plane of the first image in the L*a*b* color space when L = 0. Figure 7(b) is a graph showing the La plane of the first image in the L*a*b* color space when b = 0. Figure 7(c) is a graph showing the Lb plane of the first image in the L*a*b* color space when a = 0. [Figure 8] Fig. 8(a) is a graph showing the ab plane of the first image in the L*a*b* color space when L = 0. Fig. 8(b) is a graph showing the La plane of the first image in the L*a*b* color space when b = 0. Fig. 8(c) is a graph showing the Lb plane of the first image in the L*a*b* color space when a = 0. [Figure 9] FIG. 9 is a flowchart showing an example of a control method for a printing device according to the seventh modification. [Figure 10] Fig. 10(a) is a diagram showing a display device that displays a second image in which the portion outside the print gamut is represented by shading in a special color, and Fig. 10(b) is a diagram showing a display device that displays a second image in which the portion outside the print gamut is represented by color difference. [Figure 11] FIG. 11 is a flowchart showing an example of a control method for a printing device according to the second embodiment. [Figure 12] FIG. 12 is a flowchart showing an example of a control method for a printing device according to the eighth modification. [Figure 13] FIG. 13 is a block diagram showing the functional configuration of a printing system according to the third embodiment. [Figure 14] FIG. 14 is a flowchart showing an example of a control method for the printing system of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] (Embodiment 1) As shown in Fig. 1, a printing device 10 according to a first embodiment of the present invention is a device that ejects ink from nozzles 24 of a head 20 (Fig. 2) onto a printing medium A and prints an image on the printing medium A using the ink. Below, an example in which the printing device 10 is applied to an inkjet printer will be described. The printing medium A is, for example, a sheet of paper, cloth, or the like.

[0014] The printing device 10 is a serial head type and includes multiple heads 20, a platen 11, multiple tanks 12, a transport device 30, and a scanning device 40. The direction in which the printing medium A is transported by the transport device 30 is referred to as the front-to-rear direction. The direction in which the head 20 is moved by the scanning device 40, which intersects (e.g., is perpendicular to) the front-to-rear direction, is referred to as the left-to-right direction. The direction that intersects (e.g., is perpendicular to) the front-to-rear direction and the left-to-right direction is referred to as the up-to-down direction. However, the arrangement of the printing device 10 is not limited to this. The printing device 10 may also be a line head type. In this case, the printing device 10 does not include a scanning device 40, and the head 20 does not move and has a dimension in the left-to-right direction that is longer than the length of the printing area A1 of the printing medium A.

[0015] The multiple heads 20 include a first head 21, a second head 22, and a third head 23. The heads 20 may include at least one of the first head 21, the second head 22, and the third head 23. The platen 11 has a flat upper surface and defines the distance between the surface of the print medium A placed on the upper surface and the lower surface of the head 20 provided opposite it. The tanks 12 are containers that store ink, and the number of tanks 12 is equal to or greater than the number of types of ink. The tanks 12 include, for example, a first tank 12a, a second tank 12b, and a third tank 12c.

[0016] The first tank 12a stores ink of a predetermined basic color, is connected to the first head 21 by the first flow path 13a, and supplies the ink to the first head 21 via the first flow path 13a. Examples of the basic colors include cyan, yellow, magenta, and black.

[0017] The second tank 12b stores, for example, base ink and pretreatment liquid, is connected to the second head 22 by the second flow path 13b, and supplies the base ink and pretreatment liquid to the second head 22 via the second flow path 13b. An example of the base color, which is the color of the base ink, is white. The pretreatment liquid is a solution depending on the type of ink and printing medium A, such as an aqueous solution containing a polyvalent metal salt, and is used for pretreatment before the printing operation.

[0018] The third tank 12c stores, for example, a spot color ink and a post-treatment liquid, is connected to the third head 23 by a third flow path 13c, and supplies the spot color ink and post-treatment liquid to the third head 23 via the third flow path 13c. The spot color is a color different from the basic color inks, and examples of the spot color include chromatic colors such as red, green, blue, and violet. The post-treatment liquid is a solution that corresponds to the type of ink and print medium A, such as an aqueous solution containing resin, and is used for post-treatment after the printing operation.

[0019] The transport device 30 has, for example, two transport rollers 31 and a transport motor 32 (FIG. 3). The two transport rollers 31 are arranged in the front-to-rear direction with the platen 11 sandwiched between them. The transport roller 31 has a shaft extending in the left-to-right direction and is connected to the transport motor 32. The transport roller 31 rotates about the shaft when driven by the transport motor 32, transporting the printing medium A in the front-to-rear direction on the platen 11.

[0020] The scanning device 40 has a carriage 41, two guide rails 42, a scanning motor 43, and an endless belt 44. The two guide rails 42 extend in the left-right direction above the platen 11, sandwiching the head 20 between them in the front-to-rear direction. The carriage 41 carries the head 20 and is supported by the two guide rails 42 so as to be movable in the left-right direction. The endless belt 44 extends in the left-right direction and is attached to the carriage 41, and is also attached to the scanning motor 43 via a pulley 45. When the scanning motor 43 is driven, the endless belt 44 runs, and the carriage 41 moves back and forth in the left-right direction along the guide rails 42. As a result, the carriage 41 moves the head 20 in the left-right direction.

[0021] <head> As shown in the example of Figure 2, the carriage 41 is equipped with first heads 21 on the right and left sides, second heads 22 on the right and left sides, and third heads 23 on the right and left sides. For example, the second head 22 on the right side, the first head 21 on the right side, and the third head 23 on the right side are arranged in a row with a gap between them in the front-to-back direction, in that order from rear to rear. The second head 22 on the left side, the first head 21 on the left side, and the third head 23 on the left side are also arranged in a row with a gap between them in the front-to-back direction, in that order from rear to rear. These heads 20 are arranged in a staggered pattern in the front-to-back and left-to-right directions.

[0022] The multiple nozzles 24 include first nozzles 24a in the first head 21, second nozzles 24b in the second head 22, and third nozzles 24c in the third head 23. The nozzles 24 open on the bottom surface of each head 20. The multiple nozzles 24 are aligned in the front-to-rear direction in each head 20 to form a nozzle row. The multiple nozzle rows are arranged in parallel with intervals in the left-to-right direction in each head 20. The nozzle row of the first head 21 includes first nozzle rows 21a to 21d, the nozzle row of the second head 22 includes second nozzle rows 22a to 22d, and the nozzle row of the third head 23 includes third nozzle rows 23a to 23d.

[0023] The first nozzles 24a of the first nozzle row 21a are connected to the first tank 12a of cyan ink. The first nozzles 24a of the first nozzle row 21b are connected to the first tank 12a of magenta ink. The first nozzles 24a of the first nozzle row 21c are connected to the first tank 12a of yellow ink. The first nozzles 24a of the first nozzle row 21d are connected to the first tank 12a of black ink. The second nozzles 24b of the second nozzle rows 22a-22b are connected to the second tank 12b of the pre-treatment liquid. The second nozzles 24b of the second nozzle rows 22c-22d are connected to the second tank 12b of the base ink. The third nozzles 24c of the third nozzle rows 23a-23b are connected to the third tank 12c of the spot color ink. The third nozzles 24c of the third nozzle rows 23c to 23d are in communication with a third tank 12c for the post-processing liquid.

[0024] 3, the head 20 has a plurality of drive elements 25. The drive elements 25 are piezoelectric elements, heat generating elements, electrostatic actuators, etc., and are provided for each nozzle 24, and apply pressure to the ink to eject the ink from the nozzle 24.

[0025] <Control unit, display device, input device, colorimeter> As shown in FIG. 3, the printing device 10 further includes a display device 14, an input device 15, a colorimeter 16, and a control unit 50. The control unit 50 is, for example, a computer, and includes an interface 51, a calculation unit 52, and a storage unit 53. The interface 51 receives various data such as image data from an external device D, such as a computer, a camera, a communication network, a recording medium, a display, or a printer. The image data is, for example, raster data that represents an image to be printed on a printing medium A. The control unit 50 may be configured as a single device, or may be configured as multiple devices distributed in a distributed arrangement that work together to perform the operations of the control unit 50.

[0026] The storage unit 53 is a memory accessible from the calculation unit 52 and includes a RAM and a ROM. The RAM temporarily stores various data such as image data received from the external device D and data converted by the calculation unit 52. The ROM stores computer programs for performing various data processing and predetermined data such as predetermined correspondence relationships. The computer programs may be stored in an external storage medium different from the storage unit 53 and accessible from the calculation unit 52, such as a CD-ROM.

[0027] The calculation unit 52 includes at least one circuit, such as a processor such as a CPU and an integrated circuit such as an ASIC. The calculation unit 52 controls each unit by executing a computer program and performs various operations such as acquisition, color conversion, display, and printing. Details of each operation will be described later.

[0028] The control unit 50 is electrically connected to the display device 14, the input device 15, and the colorimeter 16. The display device 14 is, for example, a display, and displays an image to be printed by a printing operation, etc., under the control of the control unit 50. The input device 15 is, for example, a button, a mouse, etc., and is operated by a user to input data to the control unit 50. The input device 15 may be a touch panel integrated with the display device 14. The input device 15 may be an interface 51 into which information is input from outside. The colorimeter 16 is, for example, a spectrophotometer, etc., and measures the color of a patch P, etc., and inputs the measured color to the control unit 50.

[0029] Furthermore, the control unit 50 is electrically connected to the drive elements 25 via the head drive circuit 26. The control unit 50 outputs a control signal for the drive elements 25 to the head drive circuit 26, and the head drive circuit 26 generates a drive signal based on the control signal and outputs it to the drive elements 25. The drive elements 25 are driven in response to the drive signal, causing ink to be ejected from the nozzles 24.

[0030] The control unit 50 is also electrically connected to the transport motor 32 of the transport device 30 via the transport drive circuit 33, and controls the driving of the transport motor 32. This controls the transport of the print medium A by the transport device 30. The control unit 50 is also electrically connected to the scan motor 43 of the scanning device 40 via the scan drive circuit 46, and controls the driving of the scan motor 43. This controls the movement of the head 20 by the scanning device 40.

[0031] <Printing operation> In such a printing device 10, the control unit 50 acquires image data of an image and executes a printing operation based on the image data. In this printing operation, the control unit 50 ejects a liquid such as ink from the head 20 onto the printing medium A while moving the head 20 to the right or left in a pass process. Then, the control unit 50 transports the printing medium A forward in a transport process. In this way, the printing device 10 advances the printing operation by alternately repeating pass processes and transport processes.

[0032] The printing operation includes image printing and may include at least one of base printing, pretreatment, and posttreatment. The pretreatment is performed before the printing operation. In this pretreatment, the control unit 50 ejects pretreatment liquid onto the printing medium A from the second nozzles 24b of the second head 22, thereby forming a pretreatment layer on the printing medium A using the pretreatment liquid. The pretreatment layer is then subjected to heat treatment using a heat press plate, oven, hot air blower, or the like. When base printing or image printing is performed after such pretreatment, ink lands on the pretreatment layer, and the pretreatment layer bonds the ink to the printing medium A, making it easier for the ink to fix to the printing medium A.

[0033] In base printing, the control unit 50 acquires a base area based on image data or a predetermined base area. Then, the control unit 50 ejects base ink from the second nozzles 24b of the second head 22 onto the base area of ​​the printing medium A, forming a base made of base ink on the surface of the printing medium A or on the pretreatment layer.

[0034] In printing an image, the control unit 50 executes at least one of an ejection operation for ejecting ink of a base color from the first nozzles 24a of the first head 21 and an ejection operation for ejecting ink of a special color from the third nozzles 24c of the third head 23, based on the image data of the image. As a result, an image is formed with ink on the surface of the printing medium A, on the pretreatment layer, or on the base.

[0035] Post-treatment is performed after the printing operation. In this post-treatment, the control unit 50 causes the post-treatment liquid to be ejected from the third nozzle 24c of the third head 23. As a result, the post-treatment liquid lands on the image by image printing, and a post-treatment layer is formed by this post-treatment liquid. The post-treatment layer is then subjected to heat treatment using a heat press plate, an oven, a hot air blower, or the like. Such a post-treatment layer is, for example, transparent, making it easier for the image to be fixed to the print medium A.

[0036] <Printing device control method> The control method for the printing device 10 is executed by the control unit 50, for example, in accordance with the flowchart showing an example of the control method in Fig. 4. For example, when the control unit 50 receives a print job, it executes each process in accordance with the flowchart. The control unit 50 executes a first acquisition operation to acquire first image data for printing a first image F, as shown in the example of Fig. 5, on a printing medium A using ink ejected from the nozzles 24 (step S1).

[0037] This first image data is input data input to the control unit 50 and is expressed as color values ​​in a predetermined color space. These color values ​​correspond to pixels I, which are multiple regions divided per unit area in the first image F. The color values ​​are expressed, for example, as color coordinates in a device-dependent color space, such as RGB values ​​in an RGB color space. These RGB values ​​represent one color, for example, by combining 256 levels of red color values, 256 levels of green color values, and 256 levels of blue color values.

[0038] Next, the control unit 50 executes a first color conversion operation to perform color conversion on the first image data to generate second image data (step S2). In this first color conversion operation, the control unit 50 performs color conversion according to any one of the print medium A, the print conditions, and the combination of the print medium A and the print conditions.

[0039] Specifically, the control unit 50 acquires printing information on at least one of the printing medium A and printing conditions. This printing information is acquired from one of the external device D, the storage unit 53, and the input device 15.

[0040] The printing information of print medium A is a factor related to print medium A that affects the color of the image printed on print medium A. For example, the printing information of print medium A includes the type and color of print medium A, the amount and density of pretreatment liquid and post-treatment, and the fixing method of pretreatment and post-treatment. The type of print medium A includes, for example, the material and form of print medium A. Examples of the material of print medium A include paper, resin such as polyester, and fabric such as cotton. Examples of the form of print medium A include woven fabric, knitted fabric, and nonwoven fabric. Examples of the color of print medium A include white and black.

[0041] The amount of pre-treatment liquid is the total amount of pre-treatment liquid ejected from the head 20 in pre-treatment. The concentration of the pre-treatment liquid is, for example, the concentration of the main component of the pre-treatment liquid, such as a polyvalent metal salt. The amount of post-treatment liquid is the total amount of post-treatment liquid ejected from the head 20 in post-treatment. The concentration of the post-treatment liquid is, for example, the concentration of the main component of the post-treatment liquid, such as a resin. The fixing method for pre-treatment and post-treatment is, for example, a heat treatment method using a heat press plate, an oven, a hot air blower, or the like.

[0042] The printing information of the printing conditions is a printing condition that affects the color of the image printed according to the printing conditions. For example, the printing information of the printing conditions may include the ink ejection amount, printing resolution, ink type, whether or not a base is used, and the ejection amount of ink for the base. In addition to the above, the printing information of the printing conditions may also include the movement direction and print mode of the head 20 during the ejection operation in the printing operation, the humidity and temperature of the printing device 10, the type of lighting when viewing the first image F printed on the printing medium A, and the type of printing device 10.

[0043] The ink ejection volume is the total volume of ink ejected from the head 20 when printing the first image F on the printing medium A based on the first image data. The printing resolution is the quotient obtained by dividing the printing area A1 of the printing medium A by the number of pixels. The first image F is composed of ink dots U formed for each pixel I. The larger the number of pixels, the greater the number of dots U that make up the first image F, and therefore the greater the amount of ink that forms the first image F. The type of ink is the type of ink used to print the first image F based on the first image data, and examples include basic colors excluding spot colors, or basic colors and spot colors.

[0044] When the control unit 50 acquires print information, it acquires a print profile corresponding to this print information. The print profile is a color conversion table and a conversion formula in which color values ​​in a device-dependent color space and color values ​​in a device-independent color space are associated with each other according to the print information. The color values ​​in the device-dependent color space are, for example, RGB values ​​in an RGB color space. The color values ​​in the device-independent color space are color values ​​in PCS (Profile Connection Space), for example, L * a * b * These include Lab values ​​in the color space and XYZ values ​​in the XYZ color space. Lab values ​​represent a color by combining lightness L and a and b, which represent hue and saturation.

[0045] Here, if a printing profile corresponding to the printing information is stored in the storage unit 53, the control unit 50 acquires this printing profile from the storage unit 53. Furthermore, if a printing profile corresponding to the printing information can be acquired from the external device D, the control unit 50 acquires this printing profile from the external device D. Furthermore, if a printing profile corresponding to the printing information cannot be acquired from the storage unit 53 or the external device D, the control unit 50 acquires this printing profile based on the colorimetric data of the colorimeter 16.

[0046] When acquiring a printing profile based on colorimetric data from the colorimeter 16, the control unit 50 acquires image data of a predetermined patch chart N shown in the example of FIG. 6( a) from the storage unit 53. This patch chart N has a plurality of patches P. The patches P are, for example, rectangular color charts, and have a size that allows color measurement by the colorimeter 16, and may be predetermined according to the resolution of the colorimeter 16. The plurality of patches P in the patch chart N have different color values. These color values ​​are, for example, color values ​​that represent the color gamut of the RGB color space in a predetermined gradation, for example, every 32 gradations. When the color values ​​are represented in 32 gradations, the patch chart N has patches P of 729 colors that combine the colors of R, G, and B.

[0047] The control unit 50 then converts, for example, the RGB values ​​of the patch chart N into color values ​​printable by the head 20 based on a predetermined color conversion profile. The predetermined color conversion profile defines the correspondence between RGB values ​​and printable color values ​​and is stored in the storage unit 53. The printable color values ​​are based on the colors of ink that can be ejected from the head 20. For example, if basic color inks can be ejected from the head 20, these color values ​​include CMYK values, which are color coordinates in a device-dependent CMYK space. The CMYK values ​​represent one color, for example, by combining a predetermined gradation of cyan, magenta, yellow, and black color values. Furthermore, if basic color inks and spot color inks can be ejected from the head 20, these color values ​​are represented by color coordinates in a device-dependent CMYK and spot color space.

[0048] The control unit 50 then prints the patch chart N on the printing medium A in accordance with the printing information, based on the image data of the patch chart N converted into printable color values. For example, if it is desired to obtain a printing profile corresponding to the type of printing medium A, the control unit 50 prints the patch chart N on the printing medium A. Alternatively, if it is desired to obtain a printing profile corresponding to printing conditions, the control unit 50 prints the patch chart N on the printing medium A in accordance with the printing conditions. The control unit 50 then measures the color of each patch P of the patch chart N using the colorimeter 16, associates the colorimetric values ​​with the RGB values ​​of each patch P, and stores the result as a printing profile in the storage unit 53. The colorimetric values ​​are color values ​​in a device-independent color space, for example, Lab values. In this way, a printing profile corresponding to the printing information is obtained.

[0049] Then, the control unit 50 performs color conversion on the first image data using a printing profile corresponding to the printing information to generate second image data. If there are multiple printing profiles, the control unit 50 performs color conversion on the first image data using these printing profiles to generate second image data. This allows the color values ​​of the first image data, for example, RGB values ​​in an RGB color space that is a device-dependent color space, to be converted into color values ​​of the second image data, for example, RGB values ​​in an L color space that is a device-independent color space. * a * b * The second image data is converted into Lab values ​​in the color space. The second image data is PCS image data.

[0050] Next, the control unit 50 executes a second color conversion operation to perform color conversion on the second image data to generate third image data, depending on the display conditions when the first image F is displayed on the display device 14 (step S3).

[0051] Specifically, the control unit 50 acquires the display conditions from any one of the external device D, the storage unit 53, and the input device 15. The display conditions include, for example, display information on the display environment, or display information on the display device 14, or display information on the display environment and the display device 14. The display information on the display environment is an element related to the display environment that affects the color of the image displayed on the display device 14. The display information on the display environment includes, for example, the light irradiated onto the image displayed on the display device 14 or the type of light source, such as sunlight, fluorescent light, and LED light.

[0052] The display information of the display device 14 is elements related to the display device 14 that affect the color of an image displayed on the display device 14, such as settings of the display device 14, and includes the color space and illuminant of the display device 14. The color space of the display device 14 defines the colors displayed on the display device 14 and is a device-dependent color space, such as sRGB and adobeRGB. The illuminant is the light source used by the display device 14 to display an image, such as D50 and D65.

[0053] When the control unit 50 acquires the display information, it acquires a display profile according to the display information. The display profile associates color values ​​of a device-dependent color space with color values ​​of a device-independent color space according to the display information, and is a color conversion table and conversion formula. The color values ​​of the device-dependent color space are, for example, RGB values ​​in an RGB color space. The color values ​​of the device-independent color space are the same as the device-independent color space of the print profile, and are, for example, L * a * b * It is expressed as Lab values ​​in the color space and XYZ values ​​in the XYZ color space.

[0054] Here, if a display profile corresponding to the display information is stored in the storage unit 53, the control unit 50 acquires this display profile from the storage unit 53. Furthermore, if a display profile corresponding to the display information can be acquired from the external device D, the control unit 50 acquires this display profile from the external device D. Furthermore, if a display profile corresponding to the display information cannot be acquired from the storage unit 53 or the external device D, the control unit 50 acquires this display profile based on the colorimetric data of the colorimeter 16.

[0055] When acquiring a display profile based on colorimetric data from the colorimeter 16, the control unit 50 acquires image data of a predetermined patch chart N shown in the example of FIG. 6(b) from the storage unit 53, and displays the patch chart N corresponding to the display information on the display device 14 based on the image data. Then, the control unit 50 measures the color of each patch P of the patch chart N using the colorimeter 16, associates the colorimetric values, for example, Lab values ​​with the RGB values ​​of each patch P, and stores them as a display profile in the storage unit 53. In this way, a display profile corresponding to the display information is acquired.

[0056] Then, the control unit 50 performs color conversion on the second image data using a display profile corresponding to the display information to generate third image data. As a result, the color values ​​of the second image data, for example, the color values ​​of the device-independent color space L * a * b * The Lab values ​​in the color space are converted into color values ​​of the third image data, for example, RGB values ​​in the RGB color space, which is a device-dependent color space.

[0057] Next, the control unit 50 executes a display operation to display the second image H on the display device 14 based on the third image data (step S4). This third image data is color converted from the first image data of the first image F in accordance with the print information and display information. Therefore, the second image H based on the third image data takes into account factors that affect the colors of the print image and the display image, thereby improving the accuracy of the simulation of the first image F printed on the print medium A.

[0058] Then, if the user views the simulation and decides to print the first image F, the control unit 50 executes the printing operation (step S5). If the first image data is expressed in color values ​​printable by the printing device 10, for example, CMYK values, the control unit 50 prints the first image F on the printing medium A based on the first image data. On the other hand, if the first image data is expressed in RGB values, the control unit 50 converts the first image data into color values ​​printable by the printing device 10 based on a predetermined color conversion profile, generates print data, and prints the first image F on the printing medium A based on this print data.

[0059] <Variation 1> In the printing device 10 according to Modification 1, the control unit 50 performs color conversion in the first color conversion operation so that the greater the amount of ink ejected when printing the first image F based on the first image data, the darker the second image H displayed on the display device 14. Here, the control unit 50 may, in the first color conversion operation, vary any one of the hue, lightness, saturation, a combination of hue and lightness, a combination of lightness and saturation, a combination of saturation and hue, and a combination of hue, lightness, and saturation of the second image data as the greater the amount of ink ejected when printing the first image F based on the first image data. In this case, the control unit 50 may vary the hue angle for the hue, vary the lightness so that it is lower, and vary the saturation so that it is farther from the origin of the Lab color space.

[0060] Specifically, in the first color conversion operation of step S2 in FIG. 4, the control unit 50 divides the first image F into a matrix of multiple regions, or pixels I, based on the first image data acquired in the first acquisition operation of step S1. The control unit 50 then performs color conversion processing on the first image data to convert it from RGB values ​​to printable color values. The control unit 50 then performs halftone processing on the data obtained by converting the first image data into printable color values, and acquires the size of the dots U in the first image F for each color and for each pixel I. The size of the dots U corresponds to the amount of ink ejected, such that the size increases as the amount of ink ejected increases. Therefore, the control unit 50 acquires the amount of ink ejected to be used to print the first image F based on the first image data.

[0061] Then, the control unit 50 acquires a printing profile corresponding to the ink ejection amount as a printing profile corresponding to the printing information. The printing profile is a color conversion table and a conversion formula, in which RGB values ​​and Lab values ​​are associated with each other according to the ink ejection amount. The printing profile corresponding to the ink ejection amount is stored in the storage unit 53, in which RGB values ​​and Lab values ​​are associated with each other so that the color of the second image H displayed on the display device 14 becomes darker as the ink ejection amount increases.

[0062] The printing profile according to the ink ejection amount includes a plurality of printing profiles with different ink ejection amounts, for example, a first printing profile and a second printing profile. The first printing profile is a printing profile with a first ink ejection amount. The second printing profile is a printing profile with a second ink ejection amount that is greater than the first ink ejection amount.

[0063] When the same target colors among the colors of the first image data are color converted using the second print profile and the first print profile, the second color, which is the color of the second image H when color converted using the second print profile, is darker than the first color, which is the color of the second image H when color converted using the first print profile. Therefore, when the same target colors among the colors of the first image data are color converted using the second print profile and the first print profile, at least one of hue, saturation, and lightness differs between the second image data color converted using the second print profile and the second image data color converted using the first print profile.

[0064] That is, for example, the same target colors among the colors of the first image data are color-converted using the second print profile and the first print profile to generate the second image data. In this case, with regard to hue, the second image data color-converted using the first print profile and the second image data color-converted using the second print profile have the same hue. * a * b * The second color has a color coordinate of a hue angle where the second color is darker than the first color in the color space. Also, with regard to saturation, the color coordinate of the second image data color converted by the second print profile is darker than the color coordinate of the second image data color converted by the first print profile. * a * b * It is located far from the origin in the color space, e.g., zero.

[0065] Regarding brightness, the brightness of the second image data color converted by the second print profile is lower than the brightness of the second image data color converted by the first print profile. In other words, when the brightness is a positive value, the brightness of the second image data color converted by the second print profile is lower than the brightness of the second image data color converted by the first print profile. * a * b *The second image data has color coordinates in a color space. Furthermore, when the lightness is a negative value, the lightness of the second image data color-converted by the second print profile is greater than the lightness of the second image data color-converted by the first print profile. * a * b * The color coordinates in the color space are as follows: As the amount of ink ejected increases, the lightness of the second image data decreases, and the second image H becomes darker.

[0066] The control unit 50 then acquires a printing profile corresponding to the printing information, including a printing profile corresponding to the ink ejection amount, from the storage unit 53 or the external device D, or acquires the printing profile based on the colorimetric data of the colorimeter 16. The control unit 50 then color-converts the first image data using the printing profile corresponding to the printing information to generate second image data. The control unit 50 then generates third image data from the second image data using a second color conversion operation (step S3) and displays the second image H on the display device 14 based on the third image data using a display operation (step S4). As a result, the density of the second image H when the ink ejection amount used to print the first image F is the second ejection amount, which is greater than the first ejection amount, is darker than the density of the second image H when the ink ejection amount used to print the first image F is the first ejection amount. In this way, the greater the ink ejection amount used to print the first image F, the darker the color of the first image F printed on the printing medium A, while the darker the color of the second image H displayed on the display device 14 is. This allows the second image H to improve the accuracy of the simulation of the first image F.

[0067] <Variation 2> In the printing device 10 according to Modification 2, in the first embodiment and Modification 1, the control unit 50 performs color conversion in the first color conversion operation such that the higher the print resolution when printing the first image F based on the first image data, the darker the second image H displayed on the display device 14. Here, in the first color conversion operation, the control unit 50 may vary any one of the hue, lightness, saturation, a combination of hue and lightness, a combination of lightness and saturation, a combination of saturation and hue, and a combination of hue, lightness, and saturation of the second image data, the higher the print resolution when printing the first image F based on the first image data. In this case, the control unit 50 may vary the hue angle for the hue, vary the lightness so that it is lower, and vary the saturation so that it is farther from the origin of the Lab color space.

[0068] Specifically, in the first color conversion operation of step S2 in FIG. 4, the control unit 50 divides the first image F into a plurality of regions, i.e., pixels I, in a matrix based on the first image data acquired in the first acquisition operation of step S1. Here, the control unit 50 acquires the density of the pixels I as the printing resolution. Then, the control unit 50 acquires a printing profile according to the printing resolution as a printing profile according to the printing information. The printing profile is a color conversion table and a conversion formula, in which RGB values ​​and Lab values ​​are associated according to the printing resolution. In the printing profile, RGB values ​​and Lab values ​​are associated so that the second image H displayed on the display device 14 becomes darker as the printing resolution increases, and the printing profile is stored in the storage unit 53.

[0069] The print profile according to the print resolution includes multiple print profiles with different print resolutions, for example, a third print profile and a fourth print profile. The third print profile is a print profile with a print resolution of a first print resolution. The fourth print profile is a print profile with a print resolution of a second print resolution that is higher than the first print resolution.

[0070] When the same target colors of the first image data are color converted using the fourth printing profile and the third printing profile, the fourth color, which is the color of the second image H when color converted using the fourth printing profile, is darker than the third color, which is the color of the second image H when color converted using the third printing profile. Therefore, when the same target colors of the first image data are color converted using the fourth printing profile and the third printing profile, at least one of hue, saturation, and lightness differs between the second image data color converted using the fourth printing profile and the second image data color converted using the third printing profile.

[0071] That is, for example, the same target colors among the colors of the first image data are color-converted using the fourth print profile and the third print profile to generate the second image data. In this case, with regard to hue, the second image data color-converted using the third print profile and the second image data color-converted using the fourth print profile have the same hue. * a * b * The fourth color has a color coordinate of a hue angle where the fourth color is darker than the third color in the color space. Also, with regard to saturation, the color coordinate of the second image data color converted by the fourth print profile is darker than the color coordinate of the second image data color converted by the third print profile. * a * b * It is located far from the origin in the color space, e.g., zero.

[0072] Regarding brightness, the brightness of the second image data color converted by the fourth print profile is lower than the brightness of the second image data color converted by the third print profile. In other words, when the brightness is a positive value, the brightness of the second image data color converted by the fourth print profile is lower than the brightness of the second image data color converted by the third print profile. * a * b *Furthermore, when the lightness is a negative value, the second image data is converted to L so that the lightness of the second image data converted to L by the fourth print profile is greater than the lightness of the second image data converted to L by the third print profile. * a * b * The second image H has color coordinates in a color space. In this way, the higher the print resolution, the lower the brightness of the second image data, and the darker the second image H becomes.

[0073] The control unit 50 then acquires a printing profile corresponding to the printing information, including a printing profile corresponding to the printing resolution, from the storage unit 53 or the external device D, or acquires it based on the colorimetric data of the colorimeter 16. The control unit 50 then color converts the first image data using the printing profile corresponding to the printing information to generate second image data. The control unit 50 then generates third image data from the second image data by a second color conversion operation (step S3), and displays the second image H on the display device 14 based on the third image data by a display operation (step S4).

[0074] As a result, the density of the second image H when the first image F is printed at a second printing resolution higher than the first printing resolution is darker than the density of the second image H when the first image F is printed at a first printing resolution. For example, as shown in the example of FIGS. 7(a) to 7(c), the color value X of the first image F printed at a printing resolution of 1200 dpi exhibits relatively larger values ​​for the a-value and b-value than the color value Q of the first image F printed at a printing resolution of 600 dpi. As such, the higher the printing resolution when printing the first image F, the greater the number of dots U required to print the first image F. Therefore, the color of the first image F printed on the printing medium A becomes darker, while the color of the second image H displayed on the display device 14 becomes darker. Therefore, the second image H can improve the accuracy of the simulation of the first image F.

[0075] <Variation 3> In the printing device 10 according to variant example 3, in embodiment 1 and variant examples 1 and 2, the control unit 50 performs color conversion in the first color conversion operation so that the more types of ink are used when printing the first image F based on the first image data, the higher the saturation of the second image data.

[0076] Specifically, in the first color conversion operation of step S2 in FIG. 4, the control unit 50 divides the first image F into a matrix of multiple regions, or pixels I, based on the first image data acquired in the first acquisition operation of step S1. The control unit 50 then performs color conversion processing on the first image data, converting each pixel I from RGB values ​​that define the colors of the first image data into printable color values. Examples of printable color values ​​include CMYK values ​​and color coordinates in a color space of CMYK and spot colors. The control unit 50 counts the types of ink used to print the first image F based on these printable color values, and acquires the number of ink types.

[0077] Then, the control unit 50 acquires a printing profile corresponding to the number of ink types as a printing profile corresponding to the printing information. The printing profile corresponds RGB values ​​and Lab values ​​according to the number of ink types, and is a color conversion table, conversion formula, etc. The printing profile corresponding to the number of ink types corresponds RGB values ​​and Lab values ​​so that the greater the number of ink types, the higher the saturation of the second image H displayed on the display device 14, and is stored in the storage unit 53.

[0078] The printing profiles according to the number of ink types include multiple printing profiles with different numbers of ink types, for example, a fifth printing profile and a sixth printing profile. The fifth printing profile is a printing profile with a first number of ink types. The sixth printing profile is a printing profile with a second number of ink types, which is greater than the first number.

[0079] When the same target colors among the colors of the first image data are color converted using the sixth printing profile and the fifth printing profile, the sixth color, which is the color of the second image H when color converted using the sixth printing profile, is more saturated and vivid than the fifth color, which is the color of the second image H when color converted using the fifth printing profile. Therefore, when the same target colors among the colors of the first image data are color converted using the sixth printing profile and the fifth printing profile, the saturation of the second image data color converted using the sixth printing profile is higher than the saturation of the second image data color converted using the fifth printing profile. In other words, the color coordinates of the second image data color converted using the sixth printing profile are higher in saturation than the color coordinates of the second image data color converted using the fifth printing profile. * a * b * It is located far from the origin in the color space, e.g., zero.

[0080] The control unit 50 then acquires a printing profile corresponding to the printing information, including a printing profile corresponding to the number of ink types, from the storage unit 53 or the external device D, or acquires the printing profile based on the colorimetric data of the colorimeter 16. The control unit 50 then color-converts the first image data using the printing profile corresponding to the printing information to generate second image data. The control unit 50 then generates third image data from the second image data through a second color conversion operation (step S3) and displays the second image H on the display device 14 based on the third image data through a display operation (step S4). As a result, the saturation of the second image H when the number of ink types used to print the first image F is two, which is greater than the first, is higher than the saturation of the second image H when the number of ink types used to print the first image F is two. In this way, the greater the number of ink types used when printing the first image F, the more vivid the colors of the first image F printed on the printing medium A, while the more vivid the colors of the second image H displayed on the display device 14. This allows the second image H to improve the accuracy of the simulation of the first image F.

[0081] <Variation 4> In the printing device 10 according to variant 4, in embodiment 1 and variants 1 to 3, the control unit 50 performs color conversion in the first color conversion operation such that when the types of ink used when printing the first image F based on the first image data are predetermined basic colors and chromatic colors other than the basic colors, the saturation of the second image data is higher than when the types of ink are only basic colors.

[0082] Specifically, in the first color conversion operation in step S2 of Fig. 4, the control unit 50 divides the first image F into a matrix of multiple regions, or pixels I, based on the first image data acquired in the first acquisition operation in step S1. Then, the control unit 50 performs color conversion processing on the first image data, converting each pixel I from RGB values ​​that define the colors of the first image data to printable color values ​​such as CMYK values. Based on these printable color values, the control unit 50 determines whether the types of ink used to print the first image F include spot colors, which are chromatic colors other than the basic colors.

[0083] Then, the control unit 50 acquires a printing profile corresponding to the ink type as a printing profile corresponding to the printing information. The printing profile corresponds RGB values ​​and Lab values ​​according to the ink type, and is a color conversion table, conversion formula, etc. The printing profile corresponding to the ink type corresponds RGB values ​​and Lab values ​​so that the saturation of the second image H displayed on the display device 14 is higher when the ink type includes a spot color than when the ink type does not include a spot color, and is stored in the storage unit 53.

[0084] The printing profiles according to ink types include multiple printing profiles for different ink types, such as a seventh printing profile and an eighth printing profile. The seventh printing profile is a printing profile for ink types that do not include spot colors. The eighth printing profile is a printing profile for ink types that include spot colors.

[0085] When the same target colors among the colors of the first image data are color converted using the eighth printing profile and the seventh printing profile, the eighth color, which is the color of the second image H when color converted using the eighth printing profile, is more saturated and vivid than the seventh color, which is the color of the second image H when color converted using the seventh printing profile. Therefore, when the same target colors among the colors of the first image data are color converted using the eighth printing profile and the seventh printing profile, the saturation of the second image data color converted using the eighth printing profile is higher than the saturation of the second image data color converted using the seventh printing profile. In other words, the color coordinates of the second image data color converted using the eighth printing profile are higher in L than the color coordinates of the second image data color converted using the seventh printing profile. * a * b * It is located far from the origin in the color space, e.g., zero.

[0086] The control unit 50 then acquires a printing profile corresponding to the printing information, including a printing profile corresponding to the ink type, from the storage unit 53 or the external device D, or acquires the printing profile based on the colorimetric data of the colorimeter 16. The control unit 50 then color converts the first image data using the printing profile corresponding to the printing information to generate second image data. The control unit 50 then generates third image data from the second image data by a second color conversion operation (step S3), and displays a second image H on the display device 14 based on the third image data by a display operation (step S4).

[0087] As a result, the saturation of the second image H when the first image F is printed with inks containing spot colors is higher than the saturation of the second image H when the first image F is printed with inks not containing spot colors. As shown in the examples of FIGS. 7(a) to 7(c), the color value T of the first image F printed with chromatic red and violet and basic color inks exhibits larger a- and b-values ​​than the color value X of the first image F printed with basic color inks without containing chromatic spot colors. As such, when the inks used to print the first image F contain spot colors, the colors of the first image F printed on the printing medium A are more vivid than when the inks do not contain spot colors, while the colors of the second image H displayed on the display device 14 are more vivid. Therefore, the accuracy of the simulation of the first image F can be improved by using the second image H.

[0088] <Variation 5> In the printing device 10 according to Modification 5, in the first embodiment and Modifications 1 to 4, the control unit 50 performs color conversion in the first color conversion operation so that, when the first image F is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium A, the second image H displayed on the display device 14 is darker than when the first image F is printed based on the first image data on the surface of the printing medium A without a base. Here, in the first color conversion operation, when the first image F is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium A, the control unit 50 may change any one of the hue, lightness, saturation, a combination of hue and lightness, a combination of lightness and saturation, a combination of saturation and hue, and a combination of hue, lightness, and saturation of the second image data compared to when the first image F is printed based on the first image data on the surface of the printing medium A without a base. In this case, the control unit 50 may vary the hue angle for the hue, vary the lightness so that it becomes lower, and vary the saturation so that it becomes farther away from the origin of the Lab color space.

[0089] Specifically, the control unit 50 acquires printing information of the printing conditions in the first color conversion operation of step S2 in Fig. 4. The printing information of the printing conditions includes whether or not a base is to be printed on the surface of the printing medium A before printing the first image F. This printing information may be input to the control unit 50 by the user using the input device 15, or may be input to the control unit 50 from an external device D and the storage unit 53.

[0090] Then, if the print information has a background, the control unit 50 acquires a print profile with a background as the print profile corresponding to the print information, and if the print information does not have a background, it acquires a print profile without a background as the print profile corresponding to the print information. These print profiles correspond to RGB values ​​and Lab values ​​depending on whether or not there is a background, and are color conversion tables, conversion formulas, etc. The print profile corresponding to the background associates RGB values ​​and Lab values ​​so that the second image H displayed on the display device 14 is darker when there is a background than when there is no background, and is stored in the storage unit 53.

[0091] When the same target colors of the first image data are color converted using the tenth printing profile and the ninth printing profile, the tenth color, which is the color of the second image H when color converted using the tenth printing profile, is darker than the ninth color, which is the color of the second image H when color converted using the ninth printing profile. Therefore, when the same target colors of the first image data are color converted using the tenth printing profile and the ninth printing profile, at least one of hue, saturation, and lightness differs between the second image data color converted using the tenth printing profile and the second image data color converted using the ninth printing profile.

[0092] That is, for example, the same target colors among the colors of the first image data are color-converted using the tenth print profile and the ninth print profile to generate the second image data. In this case, with regard to hue, the second image data color-converted using the ninth print profile and the second image data color-converted using the tenth print profile have the same hue. * a* b * The tenth color has a color coordinate of a hue angle that is darker than the ninth color in the color space. Also, with regard to saturation, the color coordinate of the second image data color converted by the tenth print profile is darker than the color coordinate of the second image data color converted by the ninth print profile. * a * b * It is located far from the origin in the color space, e.g., zero.

[0093] Regarding brightness, the brightness of the second image data color converted by the tenth printing profile is lower than the brightness of the second image data color converted by the ninth printing profile. In other words, when the brightness is a positive value, the brightness of the second image data color converted by the tenth printing profile is lower than the brightness of the second image data color converted by the ninth printing profile. * a * b * Furthermore, when the lightness is a negative value, the second image data is converted to L so that the lightness of the second image data converted by the tenth printing profile is greater than the lightness of the second image data converted by the ninth printing profile. * a * b * The second image data has color coordinates in a color space. In this way, the brightness of the second image data with a background is lower than the brightness of the second image data without a background, and the second image H with a background is darker than the second image H without a background.

[0094] The control unit 50 acquires a printing profile corresponding to the printing information, including a printing profile with a base or a printing profile without a base, from the storage unit 53 or the external device D, or acquires it based on the colorimetric data of the colorimeter 16. The control unit 50 then color converts the first image data using the printing profile corresponding to the printing information to generate second image data. The control unit 50 then generates third image data from the second image data by a second color conversion operation (step S3), and displays a second image H on the display device 14 based on the third image data by a display operation (step S4).

[0095] As a result, the density of the second image H is darker when there is a background than when there is no background for the first image F. As shown in the examples of FIGS. 8(a) to 8(c), the color value W of the first image F when there is a background is greater than the color value V of the first image F when there is no background for the a-value and b-value. In this way, when there is a background when printing the first image F than when there is no background, the color of the first image F printed on the printing medium A is darker, while the color of the second image H displayed on the display device 14 is darker. Therefore, the second image H can improve the accuracy of the simulation of the first image F.

[0096] <Variation 6> In the printing device 10 according to Modification 6, in the first embodiment and Modifications 1 to 5, the control unit 50 performs color conversion in the first color conversion operation such that, when printing the first image F based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium A, the greater the amount of base ink ejected, the darker the second image H displayed on the display device 14. Here, the control unit 50 may change any one of the hue, lightness, saturation, a combination of hue and lightness, a combination of lightness and saturation, a combination of saturation and hue, and a combination of hue, lightness, and saturation of the second image data, the greater the amount of base ink ejected, when printing the first image F based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium A, in the first color conversion operation. In this case, the control unit 50 may vary the hue angle for the hue, vary the lightness so that it approaches a negative value or the negative value becomes larger, and vary the saturation so that it approaches the origin of the Lab color space.

[0097] Specifically, in the first color conversion operation of step S2 in FIG. 4, the control unit 50 acquires the ejection amount of the base ink as printing information of the printing conditions. The ejection amount of the base ink is acquired based on, for example, the base size and the printing resolution. The base size is the size of the base printed with the base ink on the surface of the printing medium A before printing the first image F. The base size may be input to the control unit 50 by the user via the input device 15, or may be input to the control unit 50 from an external device D and the storage unit 53. The base size may be a predetermined range, such as the same area as the printing area A1, and may be stored in advance in the storage unit 53. Alternatively, the base size may be acquired by the control unit 50 based on the first image data of the first image F, as a range in which the outer periphery of the base is the same as the outer periphery of the first image F or surrounds the outer periphery of the first image F, so that the first image F is printed on the base. Note that the printing information may also include the presence or absence of a base.

[0098] The control unit 50 then acquires the ejection amount of the base ink so that the larger the base size, the greater the ejection amount of the base ink. The control unit 50 also acquires the ejection amount of the base ink so that the higher the printing resolution, the greater the ejection amount of the base ink. In this way, the control unit 50 acquires the ejection amount of the base ink when printing the first image F based on the base size and printing resolution, and acquires a printing profile corresponding to the ejection amount of the base ink. This printing profile corresponds RGB values ​​and Lab values ​​according to the ejection amount of the base ink, and is a color conversion table, conversion formula, etc. The printing profile corresponding to the ejection amount of the base ink corresponds RGB values ​​and Lab values ​​so that the color of the second image H displayed on the display device 14 becomes darker as the ejection amount of the base ink increases, and is stored in the storage unit 53.

[0099] The printing profiles according to the ejection amount of the base ink include multiple printing profiles with different ejection amounts of the base ink, for example, an eleventh printing profile and a twelfth printing profile. The eleventh printing profile is a printing profile with a third ejection amount of the base ink. The twelfth printing profile is a printing profile with a fourth ejection amount of the base ink, which is greater than the third ejection amount.

[0100] When the same target colors of the first image data are color converted using the twelfth printing profile and the eleventh printing profile, the twelfth color, which is the color of the second image H when color converted using the twelfth printing profile, is darker than the eleventh color, which is the color of the second image H when color converted using the eleventh printing profile. Therefore, when the same target colors of the first image data are color converted using the twelfth printing profile and the eleventh printing profile, at least one of hue, saturation, and lightness differs between the second image data color converted using the twelfth printing profile and the second image data color converted using the eleventh printing profile.

[0101] That is, for example, the same target colors among the colors of the first image data are color-converted using the 12th print profile and the 11th print profile to generate the second image data. In this case, with regard to hue, the second image data color-converted using the 11th print profile and the second image data color-converted using the 12th print profile have the same hue. * a * b * The twelfth color has color coordinates of a hue angle that is darker than the eleventh color in the color space. Also, with regard to saturation, the color coordinates of the second image data color converted by the twelfth print profile are darker than the color coordinates of the second image data color converted by the eleventh print profile. * a * b * It is located far from the origin in the color space, e.g., zero.

[0102] Regarding brightness, the brightness of the second image data color converted by the twelfth printing profile is lower than the brightness of the second image data color converted by the eleventh printing profile. In other words, when the brightness is a positive value, the brightness of the second image data color converted by the twelfth printing profile is lower than the brightness of the second image data color converted by the eleventh printing profile. * a * b * Furthermore, when the lightness is a negative value, the second image data is converted to L so that the lightness of the second image data converted by the twelfth printing profile is greater than the lightness of the second image data converted by the eleventh printing profile. * a * b * It has color coordinates in a color space. In this way, the greater the ejection amount of the undercoat ink, the lower the lightness of the second image data, and the darker the second image H becomes.

[0103] The control unit 50 then acquires a printing profile corresponding to the printing information, including a printing profile corresponding to the discharge amount of the base ink, from the storage unit 53 or the external device D, or acquires the printing profile based on the colorimetric data of the colorimeter 16. The control unit 50 then color-converts the first image data using the printing profile corresponding to the printing information to generate second image data. The control unit 50 then generates third image data from the second image data through a second color conversion operation (step S3) and displays the second image H on the display device 14 based on the third image data through a display operation (step S4). As a result, the density of the second image H when the discharge amount of the base ink is the fourth discharge amount, which is greater than the third discharge amount, is darker than the density of the second image H when the discharge amount of the base ink is the third discharge amount. In this way, the greater the discharge amount of the base ink when printing the first image F, the darker the color of the first image F printed on the printing medium A, while the darker the color of the second image H displayed on the display device 14 is. Therefore, the second image H can improve the accuracy of the simulation of the first image F.

[0104] <Variation 7> In the printing device 10 according to variant 7, in embodiment 1 and variants 1 to 6, the control unit 50 executes a second acquisition operation to acquire the color gamut that can be printed on the printing medium A using ink ejected from the nozzles 24, and in the first color conversion operation, for pixels I that are outside the color gamut when the first image data is color converted, in the second color conversion operation, a special color value indicating that the pixels are outside the color gamut is assigned to the pixels, thereby generating second image data.

[0105] Specifically, the control method for the printing device 10 is executed by the control unit 50 in accordance with the flowchart illustrating an example of the control method shown in FIG. 9. In the flowchart of FIG. 9, the control unit 50 executes a second acquisition operation in step S6 between steps S1 and S2 of FIG. 4. In this second acquisition operation, the control unit 50 acquires color values, such as CMYK values, that can be printed using all inks provided in the printing device 10. These color values ​​may be input to the control unit 50 from the input device 15 or the external device D. Alternatively, when the color values ​​are pre-stored in the storage unit 53, the control unit 50 may acquire the color values ​​from the storage unit 53.

[0106] Then, the control unit 50 converts the CMYK values ​​of the printable color values ​​into Lab values ​​based on a predetermined correspondence relationship between the CMYK values ​​and the Lab values. * a * b * The control unit 50 draws in the color space. * a * b * The area occupied by the Lab values ​​of printable color values ​​in the color space is acquired as the printing color gamut. The printing color gamut is a predetermined color space, for example, L * a * b * A region that contains all printable color values ​​in the color space, L * a * b * It is a closed region in color space.

[0107] Next, in the first color conversion operation of step S2, the control unit 50 acquires a printing profile according to the printing information, and performs color conversion on the first image data using the printing profile to generate second image data. As a result, the color values ​​of each pixel I in the first image F are acquired as Lab values ​​of the second image data. Then, the control unit 50 converts the image color values, which are the Lab values ​​of the second image data, into L * a * b * The control unit 50 acquires, from among the image color values, image color values ​​that are not included in the print gamut as the color values ​​of pixel I that is outside the print gamut.

[0108] Then, in the second color conversion operation of step S3, the control unit 50 acquires a display profile corresponding to the display information and color converts the second image data using the display profile corresponding to the display information to generate third image data. Here, the control unit 50 assigns a special color value to the color value of pixel I that is outside the print gamut. This special color value is a color value that indicates that it is outside the print gamut, and is, for example, a color value that is different from the image color value of this pixel I. In the example of FIG. 10(a), the image color value of pixel I in portion J of the second image H is not included in the print gamut. In this case, the image color value is changed so that it is different from the image color value of portion J in the third image data, such as by displaying it as a shading with diagonal white and blue lines.

[0109] 10(b), the control unit 50 acquires the color difference ΔE between the image color value of pixel I in portion J of the second image H and the print color gamut. For example, the color difference ΔE is * a * b * It is the length of the perpendicular line drawn from the image color value to the print gamut in the color space. Or, the color difference ΔE is L * a * b * This is the shortest distance between the image color value and the print gamut in the color space. The control unit 50 then changes at least one of the hue, lightness, and saturation according to the color difference ΔE. For example, the control unit 50 changes the image color value of portion J in the third image data so that the lightness increases and the color approaches white as the color difference ΔE increases.

[0110] Next, the control unit 50 performs a display operation in step S4 to display the second image H on the display device 14 based on the third image data. This third image data is color converted from the first image data of the first image F in accordance with the print information and display information, thereby improving the accuracy of the simulation of the first image F to be printed on the printing medium A for pixels I within the print gamut in the second image H. Furthermore, pixels I outside the print gamut are changed to special color values. Because pixels I outside the print gamut have been changed to special color values, pixels I outside the print gamut in the second image H are displayed distinctly from the rest of the image, allowing the user to easily recognize by looking at this display that these pixels I are not included in the print gamut.

[0111] (Embodiment 2) The printing device 10 according to the second embodiment of the present invention is controlled by the control unit 50, for example, according to the flowchart of FIG. 11, which illustrates an example of a control method. Here, upon receiving a print job, the control unit 50 executes each process according to the flowchart. The control unit 50 executes a third acquisition operation to acquire fourth image data for displaying a third image on the display device 14 (step S11). This fourth image data is input data input to the control unit 50 and is expressed by color values ​​in a predetermined color space. The color values ​​correspond to pixels I, which are multiple regions divided into a unit area of ​​the third image displayed on the display device 14. The color values ​​are expressed, for example, by color coordinates in a device-dependent color space, such as RGB values ​​in an RGB color space. Next, the control unit 50 executes a display operation to display the third image on the display device 14 based on the fourth image data (step S12).

[0112] Next, the control unit 50 executes a third color conversion operation to generate fifth image data by performing color conversion on the fourth image data in accordance with the display conditions when the third image is displayed on the display device 14 (step S13). Here, the control unit 50 acquires a display profile according to the display information of the display conditions, and performs color conversion on the fourth image data using the display profile to generate fifth image data. As a result, the color values ​​of the fourth image data, for example, RGB values ​​in an RGB color space that is a device-dependent color space, are converted into the color values ​​of the fifth image data, for example, RGB values ​​in an L color space that is a device-independent color space. * a * b * The fifth image data is converted into Lab values ​​in the color space. The fifth image data is PCS image data.

[0113] Next, the control unit 50 executes a fourth color conversion operation to generate sixth image data by performing color conversion on the fifth image data in accordance with one of the printing medium A, printing conditions, and a combination of the printing medium A and the printing conditions when the third image is printed on the printing medium A (step S14). Here, the control unit 50 acquires a printing profile according to the printing information of at least one of the printing medium A and the printing conditions. Then, the control unit 50 performs color conversion on the fifth image data using the printing profile to generate sixth image data. As a result, the color values ​​of the fifth image data, for example, the color values ​​of the fifth image data in a device-independent color space, L * a * b * The sixth image data is converted from Lab values ​​in the color space to color values ​​of the sixth image data, for example, RGB values ​​in an RGB color space, which is a device-dependent color space, or CMYK values ​​in a CMYK space. If the sixth image data is RGB values, the control unit 50 converts the RGB values ​​to CMYK values ​​based on a predetermined color conversion profile.

[0114] Next, the control unit 50 executes a printing operation to print the fourth image on the printing medium A based on the sixth image data (step S15). This sixth image data is color converted from the fourth image data of the third image in accordance with the printing information and display information. Because the sixth image data takes into account factors that affect the colors of the printed image and the displayed image, the fourth image can be printed on the printing medium A in colors that are similar to the third image displayed on the display device 14.

[0115] <Variation 8> In the second embodiment, the printing device 10 according to the eighth modification is controlled by the control unit 50 in accordance with the flowchart showing an example of a control method of Fig. 12. In the flowchart of Fig. 12, the control unit 50 executes a fifth color conversion operation in step S16, a sixth color conversion operation in step S17, and a display operation in step S18 instead of step S15 of Fig. 11.

[0116] Specifically, for example, due to differences between the display color gamut of display device 14 and the print color gamut of printing device 10, the fourth image may not be printed in colors that are close to the colors of the third image displayed on display device 14 in step S12. Therefore, control unit 50 performs the operations of steps S16 to S18 to simulate how the fourth image will be printed.

[0117] When simulating how the fourth image will be printed, the control unit 50 executes a fifth color conversion operation to generate seventh image data by color converting the sixth image data according to the display conditions when the fourth image, which is printed on the printing medium A using ink ejected from the nozzles 24 based on the sixth image data, is displayed on the display device 14 (step S16). Here, the control unit 50 acquires a display profile according to the display information of the display conditions, and color converts the sixth image data using the display profile to generate the seventh image data. As a result, the color values ​​of the sixth image data, for example, RGB values ​​in an RGB color space, which is a device-dependent color space, are converted into color values ​​of the seventh image data, for example, L * a * b *The seventh image data is converted into Lab values ​​in the color space. The seventh image data is PCS image data.

[0118] Next, the control unit 50 executes a sixth color conversion operation to generate eighth image data by performing color conversion on the seventh image data in accordance with one of the printing medium A, printing conditions, and a combination of the printing medium A and the printing conditions when the fourth image is printed on the printing medium A (step S17). Here, the control unit 50 acquires a printing profile according to the printing information of at least one of the printing medium A and the printing conditions. Then, the control unit 50 performs color conversion on the seventh image data using the printing profile to generate eighth image data. As a result, the color values ​​of the seventh image data, for example, the color values ​​of the seventh image data in a device-independent color space, L * a * b * The eighth image data is converted from Lab values ​​in the color space to color values ​​of the eighth image data, for example, RGB values ​​in an RGB color space, which is a device-dependent color space, or CMYK values ​​in a CMYK space. If the eighth image data is RGB values, the control unit 50 converts the RGB values ​​to CMYK values ​​based on a predetermined color conversion profile.

[0119] Next, the control unit 50 executes a display operation to display the fifth image on the display device 14 based on the eighth image data (step S18). This eighth image data is color converted from the sixth image data of the fourth image to be printed on the printing medium A in accordance with the printing information and display information. Therefore, the fourth image displayed on the display device 14 based on the eighth image data takes into account factors that affect the colors of the printed image and the displayed image, thereby improving the accuracy of the simulation of the fourth image to be printed on the printing medium A.

[0120] (Embodiment 3) A printing system 60 according to a third embodiment of the present invention includes an image processing device 61 and a printing device 62 equipped with nozzles 24 for ejecting ink. The image processing device 61 includes a display device 14 and a control unit 50. The control unit 50 executes the following operations: a first acquisition operation for acquiring first image data for printing a first image F on a printing medium A using ink ejected from the nozzles 24; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation for performing color conversion on the second image data to generate third image data according to display conditions when the first image F is displayed on the display device 14; a display operation for displaying a second image H on the display device 14 based on the third image data; and a print data generation operation for generating print data corresponding to the color gamut of the printing device 10 based on the first image data. The printing device 62 executes a printing operation for printing the first image F on the printing medium A based on the print data. The first color conversion operation performs color conversion according to any one of the printing medium A, the printing conditions, and a combination of the printing medium A and the printing conditions.

[0121] Specifically, in the first embodiment, the printing device 10 includes the nozzles 24, the display device 14, and the control unit 50. In contrast to this, in the third embodiment, in a printing system 60, the printing device 10 includes the nozzles 24, and the image processing device 61 includes the display device 14 and the control unit 50. Like the printing device 10 of the first embodiment, the printing system 60 according to the third embodiment includes the nozzles 24, the display device 14, and the control unit 50, and therefore the control unit 50 of the printing system 60 can execute the first color conversion operations of the first to seventh modifications.

[0122] 13, the image processing device 61 of the printing system 60 is, for example, a computer, and includes an input device 15 and a colorimeter 16 in addition to the display device 14 and a control unit 50. The input device 15 and the colorimeter 16 may be provided in the printing device 10, or may be provided in the printing system 60 separately from the image processing device 61 and the printing device 10. Furthermore, the printing device 62 of the printing system 60 is connected to the control unit 50 of the image processing device 61 and is controlled by the control unit 50. The control unit 50 may be provided in the printing device 10 in addition to the image processing device 61, and these may cooperate to perform the operation of the control unit 50.

[0123] The control method for the printing system 60 is executed by the control unit 50 according to the flowchart of FIG. 14, which shows an example of the control method. In the flowchart of FIG. 14, the control unit 50 executes a print data generation operation in step S7 after step S4 of FIG. 4. In the print data generation operation in step S7, the control unit 50 acquires from the storage unit 53 or the external device D a predetermined color conversion profile that associates the print gamut, which is the color range printable by the printing device 10, with color values ​​of the first image data, such as RGB values. The print gamut includes all color values ​​printable by the inks provided in the printing device 10, and examples of these color values ​​include CMYK values ​​and color coordinates in the color space of CMYK and spot colors. The control unit 50 then performs conversion based on the predetermined color conversion profile to generate print data.

[0124] Then, in the printing operation of step S5, the printing device 62 acquires the printing data from the control unit 50 and prints the first image F on the printing medium A based on the printing data. According to this printing system 60, the second image H displayed on the display device 14 based on the third image data in the display operation of step S4 takes into account factors that affect the colors of the printed image and the displayed image, thereby improving the accuracy of the simulation of the first image F printed on the printing medium A in step S5.

[0125] It should be noted that all of the above embodiments may be combined with one another as long as they do not exclude one another. Furthermore, many improvements and other embodiments of the present invention will be apparent to those skilled in the art from the above description. Therefore, the above description should be construed as merely illustrative and is provided for the purpose of teaching those skilled in the art the best mode for carrying out the present invention. Details of the structure and / or function of the present invention may be substantially changed without departing from the spirit of the present invention. [Industrial Applicability]

[0126] The present invention can be applied to a printing apparatus, a control method thereof, a computer program, and a printing system that can improve the accuracy of simulation of a printed image. [Explanation of symbols]

[0127] 10:Printing device 14:Display device 24: Nozzle 50: Control unit 60: Printing system 61: Image processing device 62:Printing device

Claims

1. A display device, a control unit, The control unit a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Run The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the control unit performing the color conversion such that the second image displayed on the display device becomes darker as the amount of ink ejected when printing the first image based on the first image data increases; Printing device.

2. In the first color conversion operation, the control unit the greater the amount of ink ejected when printing the first image based on the first image data, the more the hue, lightness, saturation, a combination of hue and lightness, a combination of lightness and saturation, a combination of saturation and hue, and a combination of hue, lightness, and saturation of the second image data are varied; For hue, the hue angle is varied. The brightness is different so that it is lower, The saturation is varied as it moves away from the origin of the Lab color space. The printing device of claim 1 .

3. A display device, a control unit, The control unit a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Run The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the control unit performing the color conversion such that the higher the print resolution when the first image is printed based on the first image data, the darker the second image displayed on the display device; Printing device.

4. In the first color conversion operation, the control unit the higher the print resolution when printing the first image based on the first image data, the more the hue, lightness, saturation, a combination of hue and lightness, a combination of lightness and saturation, a combination of saturation and hue, and a combination of hue, lightness, and saturation of the second image data are varied; For hue, the hue angle is varied. The brightness is different so that it is lower, The saturation is varied as it moves away from the origin of the Lab color space. The printing device according to claim 3 .

5. A display device, a control unit, The control unit a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Run The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the control unit performing the color conversion such that the saturation of the second image data increases as the number of types of ink used when printing the first image based on the first image data increases; Printing device.

6. A display device, a control unit, The control unit a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Run The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the control unit When the types of inks used when printing the first image based on the first image data are predetermined basic colors and chromatic colors other than the basic colors, the color conversion is performed so that the saturation of the second image data is higher than when the types of inks used are only the basic colors. Printing device.

7. A display device, a control unit, The control unit a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Run The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the control unit When the first image is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium, the color conversion is performed so that the second image displayed on the display device is darker than when the first image is printed based on the first image data on a surface of the printing medium without the base. Printing device.

8. In the first color conversion operation, the control unit When the first image is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium, any one of the hue, lightness, saturation, a combination of hue and lightness, a combination of lightness and saturation, a combination of saturation and hue, and a combination of hue, lightness, and saturation of the second image data is made different from a case when the first image is printed based on the first image data on a surface of the printing medium without the base, For hue, the hue angle is varied. The brightness is different so that it is lower, The saturation is varied as it moves away from the origin of the Lab color space. The printing device according to claim 7.

9. A display device, a control unit, The control unit a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Run The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the control unit When the first image is printed based on the first image data on a base formed by discharging base ink onto the surface of the printing medium, the color conversion is performed such that the second image displayed on the display device becomes darker as the amount of the base ink discharged increases. Printing device.

10. In the first color conversion operation, the control unit When the first image is printed on a base formed by discharging base ink onto the surface of the printing medium based on the first image data, the greater the amount of base ink discharged, the more one of the hue, lightness, saturation, combination of hue and lightness, combination of lightness and saturation, combination of saturation and hue, and combination of hue, lightness, and saturation of the second image data is varied, For hue, the hue angle is varied. The brightness is different so that it is lower, The saturation is varied as it moves away from the origin of the Lab color space. The printing device according to claim 9.

11. A display device; a control unit, The control unit a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Run The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further The control unit performing a second acquisition operation to acquire a color gamut that can be printed on the printing medium by the ink ejected from the nozzles; In the first color conversion operation, when a color conversion of the first image data is performed, a pixel that falls outside the color gamut is assigned a special color value that indicates that the pixel is outside the color gamut in the second color conversion operation, thereby generating the second image data. Printing device.

12. A printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the greater the amount of ink ejected when printing the first image based on the first image data, the darker the second image displayed on the display device. A method for controlling a printing device.

13. A printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the higher the print resolution when the first image is printed based on the first image data, the darker the second image displayed on the display device. A method for controlling a printing device.

14. A printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the saturation of the second image data increases as the number of types of ink used when printing the first image based on the first image data increases. A method for controlling a printing device.

15. A printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the types of inks used when printing the first image based on the first image data are predetermined basic colors and chromatic colors other than the basic colors, the color conversion is performed so that the saturation of the second image data is higher than when the types of inks used are only the basic colors. A method for controlling a printing device.

16. A printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the first image is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium, the color conversion is performed so that the second image displayed on the display device is darker than when the first image is printed based on the first image data on a surface of the printing medium without the base. A method for controlling a printing device.

17. A printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the first image is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium, the color conversion is performed such that the greater the ejection amount of the base ink, the darker the second image displayed on the display device. A method for controlling a printing device.

18. A printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further performing a second acquisition operation to acquire a color gamut that can be printed on the printing medium by the ink ejected from the nozzles; In the first color conversion operation, when a color conversion of the first image data is performed, a pixel that falls outside the color gamut is assigned a special color value that indicates that the pixel is outside the color gamut in the second color conversion operation, thereby generating the second image data. A method for controlling a printing device.

19. A computer of a printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the greater the amount of ink ejected when printing the first image based on the first image data, the darker the second image displayed on the display device. Computer program.

20. A computer of a printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the higher the print resolution when the first image is printed based on the first image data, the darker the second image displayed on the display device. Computer program.

21. A computer of a printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the saturation of the second image data increases as the number of types of ink used when printing the first image based on the first image data increases. Computer program.

22. A computer of a printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the types of inks used when printing the first image based on the first image data are predetermined basic colors and chromatic colors other than the basic colors, the color conversion is performed so that the saturation of the second image data is higher than when the types of inks used are only the basic colors. Computer program.

23. A computer of a printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the first image is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium, the color conversion is performed so that the second image displayed on the display device is darker than when the first image is printed based on the first image data on a surface of the printing medium without the base. Computer program.

24. A computer of a printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the first image is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium, the color conversion is performed such that the greater the ejection amount of the base ink, the darker the second image displayed on the display device. Computer program.

25. A computer of a printing device equipped with a display device, a first acquisition operation for acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; Execute The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further performing a second acquisition operation to acquire a color gamut that can be printed on the printing medium by the ink ejected from the nozzles; In the first color conversion operation, when a color conversion of the first image data is performed, a pixel that falls outside the color gamut is assigned a special color value that indicates that the pixel is outside the color gamut in the second color conversion operation, thereby generating the second image data. Computer program.

26. A printing system including an image processing device and a printing device having nozzles that eject ink, The image processing device includes: A display device; A control unit; Equipped with The control unit a first acquisition operation of acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; a print data generating operation for generating print data according to the color gamut of the printing device based on the first image data; Run the printing device executes a printing operation to print the first image on the printing medium based on the print data; The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the greater the amount of ink ejected when printing the first image based on the first image data, the darker the second image displayed on the display device. Printing system.

27. ​​A printing system comprising an image processing device and a printing device having a nozzle for ejecting ink, The image processing device includes: A display device; A control unit; Equipped with The control unit a first acquisition operation of acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; a print data generating operation for generating print data according to the color gamut of the printing device based on the first image data; Run the printing device executes a printing operation to print the first image on the printing medium based on the print data; The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the higher the print resolution when the first image is printed based on the first image data, the darker the second image displayed on the display device. Printing system.

28. A printing system comprising an image processing device and a printing device having a nozzle for ejecting ink, The image processing device includes: A display device; A control unit; Equipped with The control unit a first acquisition operation of acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; a print data generating operation for generating print data according to the color gamut of the printing device based on the first image data; Run the printing device executes a printing operation to print the first image on the printing medium based on the print data; The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, the color conversion is performed such that the saturation of the second image data increases as the number of types of ink used when printing the first image based on the first image data increases. Printing system.

29. A printing system comprising an image processing device and a printing device having a nozzle for ejecting ink, The image processing device includes: A display device; A control unit; Equipped with The control unit a first acquisition operation of acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; a print data generating operation for generating print data according to the color gamut of the printing device based on the first image data; Run the printing device executes a printing operation to print the first image on the printing medium based on the print data; The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the types of inks used when printing the first image based on the first image data are predetermined basic colors and chromatic colors other than the basic colors, the color conversion is performed so that the saturation of the second image data is higher than when the types of inks used are only the basic colors. Printing system.

30. A printing system comprising an image processing device and a printing device having a nozzle for ejecting ink, The image processing device includes: A display device; A control unit; Equipped with The control unit a first acquisition operation of acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; a print data generating operation for generating print data according to the color gamut of the printing device based on the first image data; Run the printing device executes a printing operation to print the first image on the printing medium based on the print data; The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the first image is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium, the color conversion is performed so that the second image displayed on the display device is darker than when the first image is printed based on the first image data on a surface of the printing medium without the base. Printing system.

31. A printing system comprising an image processing device and a printing device having a nozzle for ejecting ink, The image processing device includes: A display device; A control unit; Equipped with The control unit a first acquisition operation of acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; a print data generating operation for generating print data according to the color gamut of the printing device based on the first image data; Run the printing device executes a printing operation to print the first image on the printing medium based on the print data; The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further In the first color conversion operation, when the first image is printed based on the first image data on a base formed by ejecting base ink onto the surface of the printing medium, the color conversion is performed such that the greater the ejection amount of the base ink, the darker the second image displayed on the display device. Printing system.

32. A printing system comprising an image processing device and a printing device having a nozzle for ejecting ink, The image processing device includes: A display device; A control unit; Equipped with The control unit a first acquisition operation of acquiring first image data for printing a first image on a printing medium using ink ejected from the nozzles; a first color conversion operation for performing color conversion on the first image data to generate second image data; a second color conversion operation of performing color conversion on the second image data to generate third image data in accordance with a display condition when the first image is displayed on the display device; a display operation of displaying a second image on the display device based on the third image data; a print data generating operation for generating print data according to the color gamut of the printing device based on the first image data; Run the printing device executes a printing operation to print the first image on the printing medium based on the print data; The first color conversion operation performs color conversion according to any one of the printing medium, the printing conditions, and a combination of the printing medium and the printing conditions, and further the control unit executes a second acquisition operation to acquire a color gamut that can be printed on the printing medium by the ink ejected from the nozzles; In the first color conversion operation, when a color conversion of the first image data is performed, a pixel that falls outside the color gamut is assigned a special color value that indicates that the pixel is outside the color gamut in the second color conversion operation, thereby generating the second image data. Printing system.

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