Printing method, printer, equipment and storage medium

Abstract

The invention discloses a printing method, a printer, equipment and a storage medium, and the method comprises the steps: firstly, obtaining RGB data of a to-be-printed image; then, according to the RGB data, in combination with a color characteristic curve and a color management curve which are set in advance according to printing medium material characteristics and ground color parameters, CMYK data of the to-be-printed image can be obtained; and then, according to the CMYK data, printing an image to be printed on a printing medium. According to the embodiment of the invention, through the preset color characteristic curve and the color management curve which are matched with the material characteristics and the ground color parameters of the printing medium, the adaptability of the printing medium to color restoration is remarkably enhanced, so that the printed image can keep relatively good color consistency on different media; therefore, the color deviation problem is effectively avoided, and the color accuracy of the printed image is remarkably improved.

Description

Technical Field

[0001] The embodiments of the present application relate to but are not limited to the field of printer technology, and in particular to a printing method, a printer, a device, and a storage medium. Background Art

[0002] In the traditional printing process, the color performance of the image is often limited by the material characteristics and background color parameters of the printing medium. Especially when faced with a variety of printing media, how to ensure that the printed image can accurately restore the original design color has become an urgent problem to be solved. Traditional printing technology mainly relies on the color processing capabilities of the hardware equipment itself, that is, the color conversion algorithm preset inside the printing device, but this method is often difficult to meet the different requirements of printing media of different materials for color absorption and reflection characteristics, resulting in a large deviation between the color of the printed image and the expected color. Especially in the scenario where the printing medium (such as cards, paper, etc.) has been pre-applied with a background color, traditional technology cannot effectively implement fine tone management of the ink color, and thus cannot accurately weaken or eliminate the superposition effect between the ink and the background color, which can easily cause color difference problems. Summary of the invention

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] The embodiment of the present application provides a printing method, which effectively avoids the color deviation problem and significantly improves the color accuracy of the printed image.

[0005] In a first aspect, an embodiment of the present application provides a printing method, comprising: acquiring RGB data of an image to be printed; obtaining CMYK data of the image to be printed based on the RGB data, and a preset color characteristic curve and a color management curve; printing the image to be printed on a printing medium based on the CMYK data; wherein the color characteristic curve and the color management curve are set according to the material characteristics and background color parameters of the printing medium.

[0006] In combination with the first aspect, in an embodiment of the present application, the CMYK data of the image to be printed is obtained based on the RGB data, and a preset color characteristic curve and a color management curve, including: performing color adjustment and color conversion on the RGB data according to the color characteristic curve and the color management curve to obtain CMYK data.

[0007] In combination with the first aspect, in an embodiment of the present application, color adjustment and color conversion are performed on the RGB data according to the color characteristic curve and the color management curve to obtain CMYK data, including: determining a conversion formula according to the color characteristic curve and the color management curve; and converting the RGB data according to the conversion formula to obtain CMYK data.

[0008] In combination with the first aspect, in an embodiment of the present application, printing the image to be printed on a printing medium according to the CMYK data includes: performing tone parameter processing on the CMYK data to obtain optimized CMYK data; and printing the image to be printed on a printing medium according to the optimized CMYK data.

[0009] In combination with the first aspect, in an embodiment of the present application, obtaining RGB data of the image to be printed includes: obtaining initial RGB data of the image to be printed; and performing tone correction processing on the initial RGB data to obtain RGB data.

[0010] In combination with the first aspect, in an embodiment of the present application, printing the image to be printed on a printing medium according to the CMYK data includes: performing screening processing on the image to be printed according to the CMYK data to obtain a target printing image; setting target inkjet printing parameters according to the target printing image; and printing the image to be printed on a printing medium based on the target inkjet printing parameters.

[0011] In combination with the first aspect, in an embodiment of the present application, the image to be printed is screened according to the CMYK data to obtain a target printed image, including: calculating the dot values ​​of multiple pixels of the image to be printed according to a dot function; converting the image to be printed into a halftone image according to the dot values ​​of all pixels; and removing dot overlap from the halftone image to obtain a target printed image.

[0012] On the other hand, an embodiment of the present application provides a printer that uses the printing method as described above to achieve color adjustment.

[0013] On the other hand, an embodiment of the present application provides a device, including a memory and a processor; the memory is used to store a computer program; the processor is used to implement the printing method as described above when executing the computer program.

[0014] On the other hand, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the printing method as described above is implemented.

[0015] The printing method provided in the embodiment of the present application first obtains the RGB data of the image to be printed; then, based on these RGB data, combined with the color characteristic curve and color management curve pre-set according to the material characteristics of the printing medium and the background color parameters, the CMYK data of the image to be printed can be obtained; then, according to the CMYK data, the image to be printed is printed on the printing medium. The embodiment of the present application significantly enhances the adaptability of the printing medium to color reproduction by pre-setting the color characteristic curve and color management curve that match the material characteristics of the printing medium and the background color parameters, so that the printed image can maintain good color consistency on different media. Even in the scenario where the printing medium already contains the background color parameters in advance, the superposition effect between the ink and the background color can be accurately weakened or eliminated, thereby effectively reducing the occurrence of color difference problems and improving the overall quality of the printed image. In summary, the embodiment of the present application can effectively avoid the occurrence of color difference problems through color management and color tone control, thereby ensuring the color accuracy of the printed image. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flow chart of a printing method provided in an embodiment of the present application;

[0017] Figure 2 The embodiment of this application provides Figure 1 Specific flow chart of step 130;

[0018] Figure 3 The embodiment of this application provides Figure 2 Specific flow chart of step 210 in FIG. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] It should be noted that, although the logical order is shown in the flowchart, in some cases, the steps shown or described can be performed in a different order from that in the flowchart. The terms "first", "second", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0022] In the traditional printing process, the color performance of the image is often limited by the material characteristics of the printing medium. Especially when faced with a variety of printing media, how to ensure that the printed image can accurately restore the original design color has become an urgent problem to be solved. Traditional printing technology mainly relies on the color processing capabilities of the hardware equipment itself, that is, the color conversion algorithm preset inside the printing device, but this method is often difficult to meet the different requirements of printing media of different materials for color absorption and reflection characteristics, resulting in a large deviation between the color of the printed image and the expected color. Especially in the scenario where the printing medium (such as cards, paper, etc.) has been pre-applied with a base color, traditional technology cannot effectively implement fine tone management of the ink color, and thus cannot accurately weaken or eliminate the superposition effect between the ink and the base color, which can easily cause color difference problems.

[0023] In view of this, the embodiment of the present application provides a printing method, a printer, a device and a computer-readable storage medium. First, the RGB data of the image to be printed is obtained; then, according to these RGB data, combined with the color characteristic curve and the color management curve pre-set according to the material characteristics of the printing medium and the background color parameters, the CMYK data of the image to be printed can be obtained; then, according to the CMYK data, the image to be printed is printed on the printing medium. The embodiment of the present application significantly enhances the adaptability of the printing medium to color reproduction by pre-setting the color characteristic curve and the color management curve that match the material characteristics of the printing medium and the background color parameters, so that the printed image can maintain good color consistency on different media. Even in the scenario where the printing medium already contains the background color parameters in advance, the embodiment of the present application can accurately weaken or eliminate the superposition effect between the ink and the background color through fine color tone control, thereby effectively reducing the generation of color difference problems and improving the overall quality of the printed image. In summary, the embodiment of the present application can effectively avoid the generation of color difference problems through color management and color tone control, thereby ensuring the color accuracy of the printed image.

[0024] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0025] See also Figure 1 , Figure 1 is a flow chart of the printing method provided in the embodiment of the present application. Figure 1 As shown, the method includes but is not limited to steps 110 to 130.

[0026] Step 110: Obtain RGB data of the image to be printed;

[0027] Step 120: Obtain CMYK data of the image to be printed according to the RGB data, and a preset color characteristic curve and a color management curve, wherein the color characteristic curve and the color management curve are set according to the material characteristics of the printing medium and the background color parameters;

[0028] Step 130: Print the image to be printed on the printing medium according to the CMYK data.

[0029] Steps 110 to 130 are described in detail below.

[0030] In one embodiment, the image to be printed refers to an image file that has not been processed by the printing device, but is planned or about to be printed. These images can be in digital form and stored in a computer or other digital storage medium, such as a hard disk, a USB flash drive, a cloud storage, etc. The images to be printed include various types such as photos, design drafts, charts, text documents, etc. For example, in the printing process, the user can select a suitable image file as the object to be printed according to his or her needs. Subsequently, the printing software or printer will perform a series of processing on these images, such as color adjustment, size scaling, layout setting, etc., to ensure that the final printed image meets the user's expectations. Printing media refers to materials that can be used for printing. As an important material for carrying image output, it includes but is not limited to the following: ordinary paper for printing various text files, copy paper for text printing or draft printing of laser printers and inkjet printers, photo paper and postcards for printing color pictures, as well as glossy photo paper, high-quality glossy photo paper, matte paper and fiber paper, etc. However, different printing media have different reactions to the absorption, reflection and diffusion of printing ink due to differences in their material properties (such as physical properties and chemical properties, etc.). This difference in characteristics means that even if the same ink is used, there will be significant color differences when printing the same color image on printing media of different materials.

[0031] In one embodiment, when obtaining the RGB data of the image to be printed, its initial RGB data can be extracted first. Subsequently, these initial data are subjected to tone correction processing to obtain optimized RGB data. On this basis, subsequent printing preparation work is carried out. It is worth noting that even in the printing process, problems such as color difference and tone deviation may still occur. However, by preprocessing and optimizing the RGB data, the accuracy and consistency of color reproduction in subsequent steps can be significantly improved. Specifically, such optimization can ensure that the printed image is closer to the original design, reduce color distortion, and thus improve the overall printing quality.

[0032] In one embodiment, it is understood that RGB data is composed of three basic color channels, namely red, green and blue. In a wide range of fields such as digital photography, image editing and web design, images are often stored and displayed in the form of RGB data. However, when these images face printing needs, they need to go through a conversion process, that is, from the RGB color space to the CMYK color space that is more suitable for printing. The CMYK color space consists of cyan, magenta, yellow and key / black, which is closer to the actual color performance of printing ink, so that the color effect of the image can be more accurately presented.

[0033] In one embodiment, the color characteristic curve refers to the International Color Consortium (ICC) characteristic curve. This curve reveals the unique response characteristics of the current printing medium in the process of color reception and presentation by constructing a precise mathematical model. It comprehensively considers multiple factors such as the physical properties of the medium surface, the absorption performance of the ink, the reflection and scattering characteristics of light, so as to ensure that the color of the printed output can accurately match the designer's expectations. The color management curve refers to the linear adjustment curve of the raster image processor (RIP) in the color management process. The main function of this curve is to linearize the color data to maximize the consistency and accuracy of the color during the conversion process between the input device (such as a display) and the output device (such as a printer). With the help of this curve, the color data can avoid the trouble of nonlinear distortion in the conversion process, thereby comprehensively improving the accuracy of color conversion.

[0034] In one embodiment, the color characteristic curve and the color management curve may be pre-set according to the material characteristics and background color parameters of the printing medium. The material characteristics of the printing medium here include the color of the printing medium material itself, and the background color of the printing medium here refers to the color generated by the subsequent processing of the printing medium, such as the background color formed by laser etching technology. When the background color is generated by laser etching technology, its related key parameters (i.e., background color parameters) may be the concentration and grayscale value of laser etching. Specifically, when generating the color characteristic curve and the color management curve according to the material characteristics and background color parameters, all the material characteristics and background color parameters on the current printing medium may be collected first, and then the color characteristic curves corresponding to the materials and background color parameters may be generated based on these material characteristics. Subsequently, these color characteristic curves are used to further generate the color management curve. For example, in the process of generating a color characteristic curve based on material characteristics, the color block pattern sample can be printed using the color management linearization curve preset in the Raster Image Processor (RIP) software, and then the color block pattern printed on the specific material can be accurately measured using a color measurement device, such as a spectrophotometer, to obtain the actual color value of each color block, and then the measured actual color value is compared with the color value in the original image data. Based on the comparison results, the color management software will generate a color characteristic curve corresponding to the specific printing medium. This curve depicts the color conversion relationship from image data to print output, thereby ensuring the consistency and accuracy of color on different printing media. Once the color characteristic curve is generated, it is imported into the Raster Image Processor software. The RIP software can adjust its internal initial color management linearization curve based on these color characteristic curves to obtain a color management curve.

[0035] In one embodiment, CMYK data is a color representation method widely used in the printing and printing field. It defines colors based on the mixing ratio of four basic colors, namely cyan, magenta, yellow and black (Key / Black, often abbreviated as K). The CMYK color space is mainly used in four-color printing and printing systems. By accurately adjusting the mixing ratio of these four colors, rich and colorful colors can be generated. Specifically, each color channel of CMYK data has a value range, which is usually from 0% to 100%. It should be noted that this range may also be expressed as a value from 0 to 255, but after appropriate normalization, it can be converted into a percentage form for easy understanding and application. This value range intuitively reflects the proportion of each color in the final color mixture: the higher the value of the cyan channel, the greater the proportion of the cyan component in the mixture; similarly, the values ​​of the magenta, yellow and black channels also correspond to their respective proportions in the color mixture. It is worth noting that in the CMYK color system, black (K) plays a vital role. It is mainly used to enhance the depth and contrast of colors, especially when dealing with dark-tone images. By appropriately increasing the proportion of black ink, the use of the other three color inks can be effectively reduced without sacrificing color accuracy, thereby optimizing printing effects and reducing ink consumption. This approach can not only improve the overall texture of printed works, but also help extend the life of printing equipment and reduce maintenance costs.

[0036] In one embodiment, color adjustment and color conversion are performed on RGB data according to the color characteristic curve and the color management curve to obtain CMYK data. Specifically, a conversion formula can be determined first according to the color characteristic curve and the color management curve; then the RGB data is converted according to the conversion formula to obtain CMYK data. It can be understood that these curves and parameters are usually derived based on professional color measurement and calibration processes, which can ensure the consistency and accuracy of colors between different devices and media. By analyzing and applying these curves, the CMYK value corresponding to each RGB value can be determined, thereby establishing a conversion formula. Then, the RGB data is converted using the obtained conversion formula to ensure that the converted CMYK data can accurately reflect the color characteristics of the original RGB data. Through this conversion process, CMYK data suitable for printing can be obtained, providing accurate color information for subsequent printing work.

[0037] The following is a specific example of converting RGB data into CMYK data based on the color characteristic curve (ICC) and the color management curve (RIP).

[0038] Suppose there is RGB data of an image, and the RGB value of a certain pixel is (200, 100, 50). Next, according to the color characteristic curve and color management curve, this RGB value is converted into the corresponding CMYK value for subsequent printing. It should be noted that the color characteristic curve and color management curve can usually be obtained by professional color measurement and calibration process. These curves and parameters can ensure the consistency and accuracy of colors between different devices and media. In this example, it is assumed that the conversion formula from RGB to CMYK has been obtained through professional color management software. This formula may be a complex mathematical model, or it may be based on a mapping relationship of a series of lookup tables. In this example, it is assumed that the conversion formula is as follows: C (cyan) = f C (R, G, B), M (magenta) = f M (R, G, B), Y (yellow) = f Y (R, G, B), K (black) = f K (R, G, B). Among them, fC, fM, fY and fK are the conversion functions corresponding to cyan, magenta, yellow and black respectively. Substitute the RGB value (200, 100, 50) into the conversion formula for calculation. This calculation process may involve complex mathematical operations and interpolation algorithms. To simplify the explanation, assume that the calculation results are: C = 30%, M = 60%, Y = 80%, K = 10%. After the above conversion process, CMYK data corresponding to CMYK values ​​(30%, 60%, 80%, 10%) can be obtained. This data can be used for subsequent printing work to ensure that the color of the printed image is consistent with the original RGB data.

[0039] It is worth noting that color characteristic curves and color management curves are usually calibrated based on specific devices and media, so in actual applications, it is necessary to ensure that the curves and parameters used match the printing devices and media. In addition, since RGB and CMYK are two different color models, there are inherent differences and limitations between them. Therefore, a certain degree of color deviation and distortion may occur during the conversion process. In order to minimize this deviation and distortion, you can choose the appropriate conversion method and parameters according to actual needs, and make necessary color corrections and adjustments.

[0040] In one embodiment, it is worth noting that after printing the image to be printed on the printing medium, brightness and other color deviation problems may be encountered. In order to significantly improve the color accuracy of the printed image, the CMYK data can be further processed with tone parameters to obtain optimized CMYK data. This optimization step is intended to fine-tune the tone parameters to ensure that the printed image is closer to the expected tone. Subsequently, the image to be printed is reprinted on the printing medium using these optimized CMYK data to achieve higher color reproduction and accuracy. Such a process ensures that each step from color management to the final print output is carefully regulated, thereby meeting the user's demand for high-quality printed images.

[0041] In one embodiment, after determining the hue value of each color channel (cyan C, magenta M, yellow Y and black K) in the CMYK data, the hue can be carefully adjusted for each local area of ​​the image to be printed according to these settings, so as to obtain the hue parameters that match each color in the RGB data. The core purpose of this step is to ensure that different areas of the image can accurately present the hue effect that matches the RGB data. In the specific operation, the determined CMYK data can be first imported into a professional image processing software. Subsequently, using the color management tools and layer functions built into the software, these hue values ​​can be flexibly and accurately applied to the corresponding local areas of the image. In the software environment, for each local area of ​​the image, the values ​​of the four channels of cyan C, magenta M, yellow Y and black K can be independently adjusted to finely adjust the hue performance of the area. Through this series of careful adjustments, a set of CMYK data can be accurately determined for each local area. After the hue control work is completed, the adjusted image can be exported to a file format suitable for printing, such as PDF or TIFF. Subsequently, this file is sent to the printer for print output. During the printing process, the printer can perform accurate color reproduction based on the pre-set CMYK data, thereby ensuring that the printed image is highly consistent in tone with the RGB data, thereby achieving color accuracy of the printed image.

[0042] See also Figure 2 The specific process of printing the image to be printed on the printing medium according to the CMYK data includes but is not limited to steps 210 to 230.

[0043] Step 210: Screening the image to be printed according to the CMYK data to obtain a target printed image;

[0044] Step 220: setting target inkjet printing parameters according to the target printing image;

[0045] Step 230: Printing the image to be printed on the printing medium based on the target inkjet printing parameters.

[0046] In one embodiment, in step 210, screening is a technique for converting a continuous tone image into a dot matrix image suitable for inkjet printing. Through this process, the image can be converted into a pattern composed of ink dots of different sizes and densities, thereby simulating the effect of continuous tone. The output of this step is a target print image ready for printing.

[0047] In one embodiment, in step 220, various printing parameters of the inkjet printer are set according to the characteristics of the target printed image and the printing requirements. These parameters may include, but are not limited to, printing resolution (DPI), inkjet speed, ink drop size, ink drop jetting frequency, and the type of printing medium. It is worth noting that correct parameter settings are crucial to ensure print quality and color accuracy. After this step is completed, a set of optimal inkjet printing parameters can be determined to guide the subsequent printing process.

[0048] In one embodiment, in step 230, the image to be printed (which has been converted into the target printing image at this time) is printed on a designated printing medium by an inkjet printer using the target inkjet printing parameters set in step 220. This process involves precisely controlling the ejection of ink droplets to form a desired image on the printing medium. After printing is completed, a printed work with accurate colors and clear details can be obtained.

[0049] In one embodiment, the target inkjet printing parameters may at least include ink type, inkjet volume and printing speed, printing resolution, nozzle temperature and cleaning cycle, etc. Optionally, other necessary printing parameters may also be considered and set, such as printing resolution, nozzle temperature, etc. By accurately setting the target inkjet printing parameters, the color accuracy and consistency of the printed image can be ensured.

[0050] In one embodiment, if Figure 3 As shown, the specific process of performing screen processing on the image to be printed according to CMYK data to obtain the target printed image includes but is not limited to steps 310 to 330.

[0051] Step 310: Calculating the dot values ​​of a plurality of pixels of the image to be printed according to the dot function;

[0052] Step 320: converting the image to be printed into a halftone image according to the dot values ​​of all pixels;

[0053] Step 330: Perform dot de-overlapping processing on the halftone image to obtain a target printed image.

[0054] In one embodiment, the dot function can generally determine the ink dot size, shape, distribution and other parameters of each pixel based on CMYK data. These parameters can directly affect the tone, clarity and detail of the printed image. Through the calculation of the dot function, the number or density of ink dots required for each pixel, that is, the dot value, can be obtained. These dot values ​​can be used to guide the subsequent halftone image generation process.

[0055] In one embodiment, after the dot values ​​of all pixels are obtained, the image to be printed can be converted into a halftone image. A halftone image is a dot matrix image composed of ink dots of different sizes and densities, which simulates the effect of continuous tone. In step 320, each pixel can be converted into a corresponding ink dot according to the dot value. The size, shape and distribution of the ink dot will change according to the change of the dot value, thereby forming a halftone image with a continuous tone effect.

[0056] In one embodiment, after obtaining the halftone image, it may be found that the ink dots of some pixels overlap or intersect. These overlapping or intersecting ink dots may cause the printed image to be blurred or uneven in color. Therefore, in step 330, the halftone image may also be subjected to dot de-overlapping processing. This processing is intended to optimize the arrangement and distribution of ink dots to reduce or eliminate the overlap and intersection between ink dots. Through the dot de-overlapping processing, a clearer and more uniformly colored printed image can be obtained.

[0057] It should be noted that in actual operation, the specific process and method of screening may vary depending on factors such as printing equipment, paper type, ink characteristics, etc. Therefore, when performing screening, it is necessary to adjust and optimize according to the actual situation to obtain the best printing effect.

[0058] On the other hand, an embodiment of the present application also provides a printer that can use the printing method of any of the previous embodiments, can comprehensively consider the material characteristics and color management requirements of the printing medium, and achieve precise adjustment and control of the printing color, thereby effectively reducing the color difference problem of printing and improving the printing quality of the image.

[0059] On the other hand, an embodiment of the present application further discloses a device, which includes a memory and a processor; the memory is used to store a computer program; the processor is used to implement the printing method in any of the previous embodiments when executing the computer program.

[0060] In addition, an embodiment of the present application further discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the printing method in any of the previous embodiments is implemented.

[0061] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A printing method, characterized in that: include: Get the RGB data of the image to be printed; Obtaining CMYK data of the image to be printed according to the RGB data, and a preset color characteristic curve and a color management curve; Printing the image to be printed on a printing medium according to the CMYK data; The color characteristic curve and the color management curve are set according to the material characteristics and background color parameters of the printing medium.

2. A printing method according to claim 1, characterized in that: The step of obtaining CMYK data of the image to be printed according to the RGB data, and a preset color characteristic curve and a color management curve comprises: According to the color characteristic curve and the color management curve, color adjustment and color conversion are performed on the RGB data to obtain CMYK data.

3. A printing method according to claim 2, characterized in that: The step of performing color adjustment and color conversion on the RGB data according to the color characteristic curve and the color management curve to obtain CMYK data includes: Determining a conversion formula according to the color characteristic curve and the color management curve; The RGB data is converted according to the conversion formula to obtain CMYK data.

4. A printing method according to claim 1, characterized in that: Printing the image to be printed on a printing medium according to the CMYK data comprises: Performing tone parameter processing on the CMYK data to obtain optimized CMYK data; The image to be printed is printed on a printing medium according to the optimized CMYK data.

5. A printing method according to claim 1, characterized in that: The step of obtaining RGB data of an image to be printed includes: Acquire initial RGB data of the image to be printed; The initial RGB data is subjected to a tone correction process to obtain RGB data.

6. A printing method according to claim 1, characterized in that: Printing the image to be printed on a printing medium according to the CMYK data comprises: Performing screening processing on the image to be printed according to the CMYK data to obtain a target printed image; Setting target inkjet printing parameters according to the target printing image; The to-be-printed image is printed on a printing medium based on the target inkjet printing parameters.

7. A printing method according to claim 6, characterized in that: The method of performing screen processing on the image to be printed according to the CMYK data to obtain a target printed image includes: Calculating the dot values ​​of a plurality of pixels of the image to be printed according to the dot function; Converting the to-be-printed image into a halftone image according to the dot values ​​of all pixels; The halftone image is subjected to a dot-de-screening overlapping process to obtain a target printed image.

8. A printer, characterized in that: Printing is performed using the printing method according to any one of claims 1 to 7.

9. A device, characterized in that: The method comprises a memory and a processor; the memory is used to store a computer program; the processor is used to implement the printing method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the printing method according to any one of claims 1 to 7 is implemented.

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