Color management method and device for printed file and storage medium

Abstract

The invention provides a printing file color management method and device and a storage medium. The method comprises the following steps: acquiring a characteristic color of a to-be-printed file, and preparing characteristic ink according to the characteristic color; acquiring spot color information of the characteristic ink; making a multi-channel color separation printing ICC file according to the spot color information and a CMYK color standard; and printing file color separation according to the multichannel color separation printing ICC file. According to the method, spot color ink manufacturing can be carried out according to color features of product images, color separation of exclusive ICC is achieved, the printing color gamut is directionally expanded, and printed products have uniqueness and novelty.

Description

Technical Field

[0001] The present application relates to the field of printing, and in particular to a color management method, device and storage medium for printed documents. Background Art

[0002] The CMYK color gamut is much smaller than the RGB color gamut, and the product cannot present highly saturated colors when printed. The general solution is to increase the printing color gamut by adding three colors, OGB orange, green, and blue, on the basis of CMYK. Moreover, large-scale printing equipment is required to collect data, which cannot fully reproduce the ISOCMYK color standard domain due to the influence of the operator's level and the equipment status. The data collection cost is high, the time is long, and the stability is poor. The produced ICC is not suitable for digital draft simulation proofing before printing. Without separate spot color data, it cannot be used interactively on a variety of design and typesetting software (AI\PS\ID). It is only suitable for image conversion in PS, and is not suitable for the production of vector text, color blocks, gradients, etc.

[0003] The contents of the background technology section are merely the technologies known to the inventors and do not necessarily represent the prior art in the field. Summary of the invention

[0004] In view of at least one of the problems in the prior art, a first object of the present invention is to provide a color management method for a printed file, comprising:

[0005] S1: Acquire the characteristic color of the document to be printed, and prepare characteristic ink according to the characteristic color;

[0006] S2: Acquire the spot color information of the characteristic ink;

[0007] S3: Produce a multi-channel color separation printing ICC file according to the spot color information and the CMYK color standard; and

[0008] S4: Printing the file color separation according to the multi-channel color separation printing ICC file.

[0009] In some embodiments of the present application, step S3 includes:

[0010] S31: In the printing software, establish CMYK and spot color printing standards;

[0011] S32: inputting the spot color information into the printing software, and obtaining CMYK and spot color data files based on the CMYK and spot color printing standards;

[0012] S33: embedding the CMYK and spot color data files into the standard data table file of the CMYK color standard to obtain a data table file to be printed;

[0013] S34: Print the data table file to be printed based on the CMYK color standard to obtain a print data table file; and

[0014] S35: Measure the printing data table file, and generate the multi-channel color separation printing ICC file based on the obtained measurement data.

[0015] In some embodiments of the present application, step S3 further includes:

[0016] Determining whether the obtained measurement data conforms to the CMYK color standard;

[0017] If yes, proceed to step S4.

[0018] In some embodiments of the present application, step S3 further includes:

[0019] If the obtained measurement data does not meet the CMYK color standard, the CMYK and spot color data files are modified until the obtained measurement data meets the standard of the CMYK color standard.

[0020] In some embodiments of the present application, the spot color information includes the solid Lab value, tone value, and overprint rate of the ink.

[0021] In some embodiments of the present application, the CMYK color standard is the GRACOL 2013 color standard.

[0022] A second object of the present invention is to provide a color management device for a printed document, comprising:

[0023] A characteristic ink configuration unit, used for acquiring a characteristic color of a document to be printed and preparing a characteristic ink according to the characteristic color;

[0024] A spot color information acquisition unit, used to acquire the spot color information of the characteristic ink;

[0025] A file making unit, for making a multi-channel color separation printing ICC file according to the spot color information and the CMYK color standard; and

[0026] The printing unit is used for printing the color separation of the file according to the multi-channel color separation printing ICC file.

[0027] A third object of the present invention is to provide an electronic device, comprising:

[0028] Processor; and

[0029] The memory stores computer instructions, and when the computer instructions are executed by the processor, the processor executes any one of the color management methods described above.

[0030] A fourth object of the present invention is to provide a non-transitory computer storage medium storing a computer program, which, when executed by one or more processors, enables the processors to execute any one of the color management methods described above.

[0031] The present invention can produce spot color ink according to the color characteristics of the product image, and the color separation of exclusive ICC can expand the printing color gamut in a directional manner, so that the printed product has uniqueness and novelty. Through digital printing simulation, data acquisition is carried out to produce ICC, and digital proofing before printing reduces the printing production cost. A specific method is used to perform color separation processing on the file, which has the unique attributes of file color separation and spot color, and has a packaging anti-counterfeiting function. Moreover, since exclusive ink can be produced, the printing cost is low. In addition, the spot color data can be used interactively in a variety of software to solve the problem of file production of text, color blocks, gradients and other vectors.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0034] Figure 1 A color management process flow chart provided by an embodiment of the present invention is shown.

[0035] Figure 2 A process flow chart for producing a multi-channel color separation printing ICC file according to spot color information and CMYK color standards provided by an embodiment of the present invention is shown.

[0036] Figure 3 The figure shows a file to be printed provided by an embodiment of the present invention.

[0037] Figures 4 to 6 A screenshot showing the establishment of CMYK and spot color printing standards in printing software according to an embodiment of the present invention.

[0038] CMYK and spot color data files Figure 7 The embodiment of the present invention shows a screenshot of embedding CMYK and spot color data files into a standard data table file of the CMYK color standard to obtain a data table file to be printed.

[0039] Figure 8 A comparison chart between the custom ICC color gamut according to an embodiment of the present invention and the GRACOL 2013 standard color gamut is shown.

[0040] Fig. 9The embodiment of the present invention shows a screenshot of printing a data table file to be printed based on the CMYK color standard, obtaining a printed data table file, and then measuring the printed data table file.

[0041] Fig.10 A screenshot showing generation of a multi-channel color separation printing ICC file based on obtained measurement data according to an embodiment of the present invention.

[0042] Fig.11 A screenshot showing an embodiment of the present invention in which a multi-channel color separation printing ICC file is imported into PHOTOSHOP for multi-channel file color separation.

[0043] Fig.12 The printed file obtained by the embodiment of the present invention is shown.

[0044] Fig.13 The comparative example of the present invention shows Figure 3 The file to be printed shown is directly printed in CMYK mode to obtain a printed file. DETAILED DESCRIPTION

[0045] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0046] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0047] As used herein, "about" or "approximately" includes the stated value and means within an acceptable range of deviation from the particular value as determined by one skilled in the art, taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0048] The following is a more detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings and examples, so that the scheme of the present invention and its advantages in various aspects can be better understood. However, the specific embodiments and examples described below are only for the purpose of illustration, rather than for limiting the present invention.

[0049] Figure 1 A color management method provided in an embodiment of the present application is shown, including the following steps S1-S4.

[0050] S1: Acquire the characteristic color of the file to be printed, and prepare characteristic ink according to the characteristic color.

[0051] The characteristic color is the main color in the document to be printed, which can be one or more colors. The ink mixing personnel can mix the ink according to the characteristic color to obtain the characteristic ink.

[0052] When the characteristic color is not a standard color, the prior art cannot make the printed piece perfectly present the characteristic color. The present invention configures characteristic inks to quickly and accurately collect spot color data so as to perfectly present the color of the document to be printed in the printed document.

[0053] S2: Get the spot color information of the characteristic ink.

[0054] Optionally, the spot color information includes the solid Lab value, tone value, overprint rate, etc. of the ink. The ink name, substrate, ownership, etc. can be defined together and then the data file can be exported for subsequent file production.

[0055] S3: Create multi-channel color separation printing ICC files based on spot color information and CMYK color standards.

[0056] Alternatively, if Figure 2 As shown, step S3 includes:

[0057] S31: In the printing software, establish CMYK and spot color printing standards.

[0058] Conventional printing software only has CMYK channels. This step creates a new CMYK and spot color printing standard in the printing software, providing a channel for subsequently overlaying the spot color information with the CMYK standard color information.

[0059] S32: Input the spot color information into the printing software, and obtain CMYK and spot color data files based on CMYK and spot color printing standards.

[0060] The spot color information of the ink, such as the 100% dot Lab value of the ink, is input into the printing software, and based on the CMYK and spot color printing standards established in the previous step, CMYK and spot color data files are obtained.

[0061] S33: Embed the CMYK and spot color data files into the standard data table file of the CMYK color standard to obtain a data table file to be printed.

[0062] Here, the CMYK color standard may be the GRACOL 2013 color standard, or other standards.

[0063] S34: Print the data table file to be printed based on the CMYK color standard to obtain a print data table file.

[0064] Since the CMYK color standard is used to print the data table file to be printed, it means that the printed file is in line with the industry standard. Therefore, it can be used interactively in a variety of software to solve the problem of vector file production such as text, color blocks, gradients, etc.

[0065] This step may optionally further include:

[0066] Determine whether the obtained measurement data conforms to the CMYK color standard. If so, proceed to step S4, i.e. generate a multi-channel color separation printing ICC file based on the obtained measurement data. If not, modify the CMYK and spot color data files until the obtained measurement data conforms to the CMYK color standard.

[0067] For example, if the spot color difference exceeds 1.0, the maximum CMYK color difference exceeds 3.5, and the average color difference exceeds 1.5, it is unqualified. Through circular calibration, the spot color color difference with the target value is less than 1, the maximum CMYK color difference is less than 3.5, and the average color difference is less than 1.5, which is qualified.

[0068] S35: Measure the print data table file, and generate a multi-channel color separation printing ICC file based on the obtained measurement data.

[0069] The measurement data is obtained by measuring the printed data table file, and the measurement data is used to generate a specific ICC for multi-channel color separation of the file.

[0070] S4: Print the color separation of the file according to the multi-channel color separation printing ICC file.

[0071] Here, you need to convert the file first: import the multi-channel color separation printing ICC file into, for example, PHOTOSHOP for multi-channel file color separation, complete the file color separation that complies with the GRACOL2013 standard plus spot colors, and then print it.

[0072] The present invention can produce spot color ink according to the color characteristics of the product image, and can separate the color of the exclusive ICC, expand the printing color gamut in a directional manner, so that the printed product has uniqueness and novelty. Through digital printing simulation, data acquisition is carried out to produce ICC, and digital proofing before printing reduces the printing production cost. A specific method is used to separate and process the file, which has the unique attributes of file color separation and spot color, and has a packaging anti-counterfeiting function. Moreover, since spot color ink can be produced, the printing cost is low. In addition, the spot color data can be used interactively in a variety of software to solve the problem of file production of text, color blocks, gradients and other vectors.

[0073] A specific embodiment is provided below for illustration.

[0074] Figure 3 The file to be printed provided by this embodiment is shown. It can be seen from the file to be printed that its characteristic color is blue-purple. Ink is prepared according to the characteristic color, and then the Lab value of the ink is measured. After defining the ink name, substrate, ownership and other information, the data file is exported for subsequent file production.

[0075] In the printing software, create a CMYK plus spot color print file for color data collection and production of multi-channel color separation printing ICC files, such as Figures 4 to 6 shown.

[0076] Embed the CMYK and spot color data files into the standard data table file of the CMYK color standard to obtain the data table file to be printed, such as Figure 7 The CMYK color standard used in this embodiment is the GRACOL2013 color standard. Figure 8 The diagram shows a comparison between the custom ICC color gamut of this embodiment and the standard color gamut of GRACOL 2013. The color gamut of this embodiment is much larger than the standard color gamut of GRACOL 2013 in the blue and purple regions (white transparent regions), which shows that the printing color gamut has been expanded in a directional manner.

[0077] Next, the data table file to be printed is printed based on the CMYK color standard to obtain the printed data table file, and then the printed data table file is measured, such as Fig. 9 It is determined whether the obtained measurement data meets the standard of the CMYK color standard. In this embodiment, it meets the standard. Therefore, a multi-channel color separation printing ICC file is generated based on the obtained measurement data, as shown in FIG. Fig.10 shown.

[0078] Finally, import the multi-channel color separation printing ICC file into PHOTOSHOP for multi-channel file color separation. Fig.11 As shown, the file to be printed is finally printed, and the print file obtained is as follows Fig.12 shown.

[0079] Fig.13 Yes Figure 3 The file to be printed is directly printed in CMYK mode to obtain the printed file. Fig.12 and Fig.13 ,visible, Fig.13 The purple color printed in the paper is reddish. Fig.12 The purple printed in the image is bluish, which perfectly presents the color of the document to be printed.

[0080] The color management method of the present invention can be implemented in the form of a color management device for printing files, an electronic device, or a non-transient computer storage medium.

[0081] In one embodiment of the present application, a color management device includes:

[0082] A characteristic ink configuration unit, used for obtaining the characteristic color of the document to be printed and preparing the characteristic ink according to the characteristic color;

[0083] A spot color information acquisition unit, used for acquiring spot color information of characteristic ink;

[0084] A file making unit, for making a multi-channel color separation printing ICC file according to the spot color information and the CMYK color standard; and

[0085] The printing unit is used for printing the color separation of the file according to the multi-channel color separation printing ICC file.

[0086] The electronic device includes a processor and a memory, wherein the memory stores computer instructions, and when the computer instructions are executed by the processor, the processor executes the color management method.

[0087] The non-transitory computer storage medium includes a computer program stored thereon. When the computer program is executed by one or more processors, the processors are enabled to execute the above color management method.

[0088] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules described in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0089] The units or modules described as separate components may or may not be physically separated. The components described as units or modules may or may not be physical units, that is, they may be located in one device or distributed on multiple devices. The solutions of the embodiments in the present application may be implemented by selecting some or all of the units therein according to actual needs.

[0090] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0091] If the integrated unit / module is implemented in the form of hardware, the hardware may be a digital circuit, an analog circuit, etc. The physical implementation of the hardware structure includes but is not limited to transistors, memristors, etc. If not otherwise specified, the processor may be any appropriate hardware processor, such as a CPU, a GPU, an FPGA, a DSP, an ASIC, etc. If not otherwise specified, the storage unit may be any appropriate magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory RRAM (Resistive Random Access Memory), a dynamic random access memory DRAM (Dynamic Random Access Memory), a static random access memory SRAM (Static Random-Access Memory), an enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), a high-bandwidth memory HBM (High-Bandwidth Memory), a hybrid memory cube HMC (Hybrid Memory Cube), etc.

[0092] If the integrated unit / module is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or CD-ROM and other media that can store program codes.

[0093] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0094] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A color management method for a printed document, characterized in that: include: S1: Acquire the characteristic color of the document to be printed, and prepare characteristic ink according to the characteristic color; S2: Acquire the spot color information of the characteristic ink; S3: Produce a multi-channel color separation printing ICC file according to the spot color information and the CMYK color standard; and S4: Printing the file color separation according to the multi-channel color separation printing ICC file.

2. The color management method according to claim 1, characterized in that: Step S3 includes: S31: In the printing software, establish CMYK and spot color printing standards; S32: inputting the spot color information into the printing software, and obtaining CMYK and spot color data files based on the CMYK and spot color printing standards; S33: embedding the CMYK and spot color data files into the standard data table file of the CMYK color standard to obtain a data table file to be printed; S34: Print the data table file to be printed based on the CMYK color standard to obtain a print data table file; and S35: Measure the printing data table file, and generate the multi-channel color separation printing ICC file based on the obtained measurement data.

3. The color management method according to claim 2, characterized in that: Step S3 also includes: Determining whether the obtained measurement data conforms to the CMYK color standard; If yes, proceed to step S4.

4. The color management method according to claim 3, characterized in that: Step S3 also includes: If the obtained measurement data does not conform to the CMYK color standard, the CMYK and spot color data files are modified until the obtained measurement data conforms to the CMYK color standard.

5. The color management method according to claim 1, characterized in that: The spot color information includes the solid Lab value, gradation value, and overprint rate of the ink.

6. The color management method according to claim 1, characterized in that: The CMYK color standard is the GRACOL 2013 color standard.

7. A color management device for printing documents, characterized in that: include: A characteristic ink configuration unit, used for acquiring a characteristic color of a document to be printed and preparing a characteristic ink according to the characteristic color; A spot color information acquisition unit, used to acquire the spot color information of the characteristic ink; A file making unit, used for making a multi-channel color separation printing ICC file according to the spot color information and the CMYK color standard; as well as The printing unit is used for printing the color separation of the file according to the multi-channel color separation printing ICC file.

8. An electronic device, characterized in that: include: processor; as well as A memory storing computer instructions, which, when executed by the processor, enables the processor to execute the color management method according to any one of claims 1 to 6.

9. A non-transitory computer storage medium storing a computer program, which, when executed by one or more processors, enables the processors to execute the color management method according to any one of claims 1 to 6.

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