A method, product, apparatus and medium for intaglio plate making electronic engraving

Abstract

This application relates to the field of gravure printing technology, and more particularly to a method, product, equipment, and medium for electronic engraving of gravure printing plates. The method includes: obtaining the printing quality requirements and color information of the original artwork; determining printing parameters and printing curves based on the printing quality requirements and color information; a trial printing step: controlling the printing equipment according to the printing parameters and printing curves to perform a trial print on the original artwork to obtain a trial print, and determining whether the trial print meets the printing requirements of the original artwork; if not, adjusting the printing parameters and / or printing curves and performing the trial print step; if it meets the requirements, printing the original artwork according to the printing parameters and printing curves corresponding to the case where the trial print meets the printing requirements of the original artwork. This application can improve overall production efficiency.

Description

Technical Field

[0001] This application relates to the field of gravure printing technology, and in particular to a method, product, equipment and medium for electronic engraving of gravure printing plates. Background Technology

[0002] In the process of gravure printing, especially in the plate-making stage, a large amount of organic solvents are used for ink preparation and plate treatment. These organic solvents will produce volatile organic compounds (VOCs) during the evaporation process, which pose a threat to the environment and human health.

[0003] Related technologies reduce VOC emissions by optimizing the plate-making process. They utilize electronic engraving technology to directly create images and text on the printing plate, eliminating the need for chemical etching or electroplating steps in traditional plate-making processes, thus significantly reducing the use of organic solvents and VOC emissions. However, this method requires multiple manual trials to obtain optimal process parameters, resulting in low production efficiency. Summary of the Invention

[0004] To address the problem of low production efficiency in existing printing technologies, this application provides a gravure printing plate electronic engraving method, product, equipment, and medium.

[0005] Firstly, this application provides a method for electronic engraving of gravure printing plates, employing the following technical solution: A method for electronic engraving of gravure printing plates, comprising: Obtain the printing quality requirements and color information of the original artwork; The printing parameters and printing curves are determined based on the printing quality requirements and the original color information. Trial printing steps: Control the printing equipment to perform trial printing on the original artwork according to the printing parameters and the printing curve to obtain a trial print, and determine whether the trial print meets the printing requirements of the original artwork; If the requirements are not met, adjust the printing parameters and / or the printing curve, and perform the trial printing step. If the conditions are met, the original artwork is printed according to the printing parameters and printing curves corresponding to the case where the trial print meets the printing requirements of the original artwork.

[0006] By adopting the above technical solution, the printing quality requirements and color information of the original artwork are obtained, ensuring that subsequent printing work has clear quality standards and color benchmarks, reducing errors caused by unclear information. Based on the printing quality requirements and the original artwork color information, printing parameters and printing curves are determined to ensure that key indicators during the printing process meet the requirements of the original artwork. Trial printing allows for a direct view of the printing effect, verifying the accuracy of printing parameters and curves. If problems are found, adjustments can be made before formal printing to avoid large-scale errors, ensuring that the quality of the formally printed products meets expectations, reducing rework. Through repeated adjustments and optimizations, the printing effect meets expected requirements, reducing production interruptions caused by frequent adjustments, improving overall production efficiency, and reducing VOC emissions by optimizing process parameters.

[0007] In a preferred embodiment, this application can be further configured as follows: the printing quality requirements include quality grade requirements and sharpness requirements; the original color information includes original color richness, original color saturation, and original color parameters; and the printing parameters include halftone lines, halftone angles, pin angles, and dot values. The step of determining printing parameters and printing curves based on the printing quality requirements and the original color information includes: The halftone screen is determined based on the quality level requirements, the color richness of the original artwork, and the color saturation of the original artwork. Obtain the preset screen angle; The needle angle is determined based on the color saturation of the original artwork; The dot value is determined based on the required sharpness and the original color saturation. The printing curve is determined based on the original color parameters.

[0008] By adopting the above technical solutions, adjusting the halftone screen according to the quality level and color richness and saturation, it is possible to ensure that image details are maintained while meeting specific quality level requirements. The halftone angle is set to reduce moiré patterns (interference fringes caused by the overlapping of different colored inks) that may occur during the printing process. Pre-setting and following a reasonable halftone angle combination can significantly improve the visual effect of printed materials. Adjusting the pin angle according to the color saturation of the original can ensure that the printed materials can accurately reproduce the color effect of the original. By adjusting the dot value according to the sharpness requirements and color saturation, it is possible to ensure that the printed materials achieve the best balance between sharpness and color performance. By accurately setting the printing curve according to the color parameters of the original, it is possible to ensure that the printed materials can accurately reproduce the color characteristics of the original.

[0009] In a preferred embodiment, this application can be further configured such that: determining the halftone screen based on the quality level requirements, the original color richness, and the original color saturation includes: Determine the preset range of mesh lines corresponding to the quality level requirements, and use the median of the preset range of mesh lines as the initial mesh line; Determine whether the original artwork has high color richness and high color saturation, and obtain a comprehensive judgment result. The adjustment difference is determined based on the comprehensive judgment result. The sum of the adjustment difference and the initial net length is taken as the net length.

[0010] By adopting the above technical solution, preset screen ruling ranges are set for different quality levels, providing a reasonable starting point. Choosing the median value of the range as the initial screen ruling is neither too conservative nor too aggressive, allowing for flexibility in subsequent adjustments. By determining whether the original artwork's color richness and saturation are high, a comprehensive judgment is obtained, ensuring the comprehensiveness and accuracy of screen ruling adjustments. This allows for further optimization of the screen ruling settings, making them more consistent with the original artwork's color characteristics and printing requirements.

[0011] In a preferred embodiment, this application can be further configured such that determining whether the trial print meets the printing requirements of the original print includes: Obtain the color parameters, sharpness, color saturation, color richness, and interference of the test print; Determine whether the color parameters, the sharpness, the color saturation, the color richness, and the interference condition meet the corresponding preset conditions; If any of the color parameters, the sharpness, the color saturation, the color richness, and the interference condition does not meet the corresponding preset conditions, then the printed manuscript is determined to not meet the printing requirements of the original manuscript.

[0012] By adopting the above technical solution, information on multiple dimensions such as color parameters, sharpness, color saturation, color richness, and interference of the test print can be obtained, enabling a comprehensive and detailed evaluation of the quality of the test print. Each dimension has corresponding preset conditions, which are based on the printing requirements of the original print and industry standards, thus allowing for an accurate determination of whether the test print meets the requirements.

[0013] In a preferred embodiment, this application can be further configured to: adjust the printing parameters and / or the printing curve, including: The items among the color parameters, sharpness, color saturation, color richness, and interference conditions that do not meet the corresponding preset conditions are designated as items to be adjusted. The printing parameters and / or printing curves corresponding to the items to be adjusted are adjusted according to the preset correspondence. The preset correspondence is the correspondence between items and adjustment content. The preset correspondence includes: the color parameter corresponds to the printing curve, the clarity corresponds to the halftone screen, the color saturation corresponds to the pin angle, the color richness corresponds to the halftone dot value, and the interference condition corresponds to the halftone angle.

[0014] By adopting the above technical solution, comparing the differences between the color parameters, clarity, color saturation, color richness, and interference of the trial print and the preset conditions, it is possible to accurately identify which items do not meet the requirements, i.e., the items to be adjusted. The preset correspondence provides clear guidance for the correspondence between the items to be adjusted and the content to be adjusted, ensuring the logic and consistency of the adjustment process, avoiding arbitrariness and blindness in the adjustment, and the efficient adjustment method helps to shorten the adjustment cycle and improve production efficiency.

[0015] In a preferred embodiment, this application can be further configured to: determine whether the color parameters meet the corresponding preset conditions, including: Obtain the C, M, Y, and K values ​​from the color parameters, as well as the original C, M, Y, and K values ​​from the original color parameters; Calculate the first degree of difference between the C value and the C value of the original, the second degree of difference between the M value and the M value of the original, the third degree of difference between the Y value and the Y value of the original, and the fourth degree of difference between the K value and the K value of the original; The first difference, the second difference, the third difference, and the fourth difference are compared with preset color channel difference thresholds, respectively. If any one of the first difference, the second difference, the third difference, and the fourth difference exceeds the preset color channel difference threshold, then the color parameter is determined not to meet the corresponding preset condition.

[0016] By adopting the above technical solution, the values ​​of the four color channels C (cyan), M (magenta), Y (yellow), and K (black) are obtained, and their differences from the corresponding values ​​in the original color parameters are calculated. This achieves precise quantification of color differences, helps to capture differences in color details, ensures a comprehensive evaluation of color changes, and provides a clear quantitative standard for judging whether color parameters meet the requirements by setting preset color channel difference thresholds, which helps to ensure that the color quality of printed materials meets expectations.

[0017] In a preferred embodiment, this application can be further configured such that the sharpness includes edge sharpness. Determining whether the sharpness meets the corresponding preset conditions includes: Obtain the edge sharpness of the original printed document; Determine the edge sharpness difference between the stated edge sharpness and the original document's edge sharpness; Determine whether the edge sharpness difference exceeds a preset edge sharpness difference threshold; If the threshold is exceeded, the resolution is determined to not meet the corresponding preset conditions.

[0018] By adopting the above technical solution, the edge sharpness of the printed matter and the edge sharpness of the original are obtained, and the difference between them is calculated, thus achieving precise quantification of the sharpness difference and making the sharpness assessment more objective and accurate.

[0019] Secondly, this application provides a computer program product, which adopts the following technical solution: A computer program product includes a computer program that, when executed by a processor, implements the gravure printing plate electronic engraving method as described in any of the first aspects.

[0020] Thirdly, this application provides an electronic device that adopts the following technical solution: One or more processors; Memory; At least one application, wherein the at least one application is stored in memory and configured to be executed by at least one processor, the at least one application being configured to: perform the gravure printing plate electronic engraving method as described in any of the first aspects.

[0021] Fourthly, this application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium having a computer program stored thereon, which, when executed in a computer, causes the computer to perform the gravure printing plate electronic engraving method as described in any of the first aspects.

[0022] In summary, this application includes the following beneficial technical effects: This application ensures clear quality standards and color benchmarks for subsequent printing work by obtaining the printing quality requirements and color information of the original artwork, reducing errors caused by unclear information. Based on the printing quality requirements and color information, printing parameters and curves are determined to ensure that key indicators during printing meet the original artwork requirements. Trial printing allows for a direct observation of the printing effect, verifying the accuracy of printing parameters and curves. If problems are found, adjustments can be made before formal printing to avoid large-scale errors, ensuring that the quality of the printed product meets expectations and reducing rework. Through repeated adjustments and optimizations, the printing effect meets expected requirements, reducing production interruptions caused by frequent adjustments and improving overall production efficiency. Furthermore, optimizing process parameters can also reduce VOC emissions. Attached Figure Description

[0023] Figure 1This is a schematic flowchart of an electronic engraving method for gravure printing plates provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail.

[0025] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0028] It should be noted that, in the optional embodiments of this application, the data related to object information, when applied to specific products or technologies, requires the permission or consent of the object. Furthermore, the collection, use, and processing of this data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. In other words, if the embodiments of this application involve data related to an object, it must be obtained with the object's authorization and consent, the authorization and consent of relevant departments, and in accordance with the relevant laws, regulations, and standards of the country and region. If the embodiments involve personal information, the acquisition of all personal information requires the individual's consent. If sensitive information is involved, the separate consent of the information subject is required. The embodiments also need to be implemented with the object's authorization and consent.

[0029] This application provides an embodiment of an electronic engraving method for gravure printing plates, such as... Figure 1As shown, the method provided in this application embodiment is executed by an electronic device, which can be a server or a terminal device. The server can be an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The terminal device can be a smartphone, tablet, laptop, desktop computer, etc., but is not limited to these. The terminal device and the server can be directly or indirectly connected via wired or wireless communication. This application embodiment does not impose any limitations on this connection. The method includes steps S101-S105, wherein: S101. Obtain the printing quality requirements and color information of the original artwork.

[0030] In this embodiment, printing quality requirements include the customer's requirements for the quality grade and sharpness of the printed matter. Original color information includes original color richness, original color saturation, and original color parameters. Sharpness can be represented numerically, and the sharpness requirement can be the required sharpness level for the printed document, which can be one of low, medium, or high sharpness levels. The original color information can be obtained by scanning the original document using color management software.

[0031] S102. Determine printing parameters and printing curves based on printing quality requirements and original color information.

[0032] In this embodiment, printing parameters include halftone dots, halftone angle, pin angle, and dot value. Halftone dots are a parameter describing dot density, that is, the number of dots per unit area along the dot arrangement direction (usually horizontal or vertical). A higher halftone dot count indicates more dots per unit area, resulting in stronger image detail representation. Halftone angle refers to the angle between the line connecting the center points of two adjacent dots and the horizontal direction (or a reference direction). In printing, different halftone angles are typically used to avoid color interference and moiré patterns. Pin angle refers to the angle between the two faces of the engraving pin. Dot value refers to the proportion of area occupied by the halftone dot during the printing process.

[0033] Furthermore, the screen ruling can be determined based on the required quality level, the richness and saturation of the original artwork's colors. The screen angle can be preset manually based on experience. The pin angle can be determined based on the original artwork's color saturation. The dot value can be determined based on the required sharpness and the original artwork's color saturation. The printing curve is determined based on the original artwork's color parameters.

[0034] S103. Trial Printing Steps: Control the printing equipment according to the printing parameters and printing curve to conduct trial printing on the original manuscript to obtain a trial print, and determine whether the trial print meets the printing requirements of the original manuscript.

[0035] In this embodiment, the determined printing parameters and printing curve are input into the control system of the printing equipment to initiate the trial printing process. During the trial printing, the operating status of the printing equipment and the printing effect are closely monitored. After the trial printing is completed, the trial print is removed from the printing equipment and subjected to preliminary inspection. Color measurement instruments (such as densitometers and spectrophotometers) are used to measure and evaluate the color parameters, sharpness, color saturation, color richness, and interference of the trial print.

[0036] S104. If the requirements are not met, adjust the printing parameters and / or printing curve, and perform a trial printing step.

[0037] Specifically, based on the evaluation results of the trial print, items that do not meet the preset conditions are identified and need adjustment, such as color deviation, insufficient sharpness, and inadequate color saturation. The corresponding printing parameters or printing curves are then adjusted according to preset correspondences. This adjustment process may require multiple iterations to gradually approach the optimal printing effect.

[0038] The printing requirements also include preset conditions for color parameters, sharpness, color saturation, color richness, and interference. These preset conditions can be set in advance according to customer needs. The preset correspondence is the correspondence between items and adjustment content. The preset correspondence includes: color parameters corresponding to printing curves, sharpness corresponding to halftone lines, color saturation corresponding to pin angles, color richness corresponding to dot values, and interference corresponding to halftone angles.

[0039] Furthermore, a trial print is performed again using the adjusted printing parameters and printing curves, and the above evaluation and adjustment process is repeated until the trial print meets the printing requirements of the original print.

[0040] S105. If satisfied, the original manuscript shall be printed according to the printing parameters and printing curves corresponding to the case where the trial print meets the printing requirements of the original manuscript.

[0041] Specifically, after the trial print meets the printing requirements, the final printing parameters and printing curve are confirmed. The confirmed printing parameters and printing curve are then input into the printing equipment to start the batch printing process.

[0042] This application embodiment obtains the printing quality requirements and color information of the original artwork, ensuring that subsequent printing work has clear quality standards and color benchmarks, reducing errors caused by unclear information. Based on the printing quality requirements and color information of the original artwork, printing parameters and printing curves are determined to ensure that key indicators during the printing process meet the requirements of the original artwork. Trial printing allows for a direct view of the printing effect, verifying the accuracy of printing parameters and curves. If problems are found, adjustments can be made before formal printing to avoid large-scale errors, ensuring that the quality of the formally printed products meets expectations, reducing rework. Through repeated adjustments and optimizations, the printing effect meets expected requirements, reducing production interruptions caused by frequent adjustments, improving overall production efficiency, and reducing VOC emissions by optimizing process parameters.

[0043] One possible implementation of this application embodiment is that the printing quality requirements include quality grade requirements and sharpness requirements; the original color information includes original color richness, original color saturation and original color parameters; and the printing parameters include halftone lines, halftone angles, pin angles and dot values. Based on printing quality requirements and original color information, determine printing parameters and printing curves, including: The screen ruling is determined based on the required quality level, the richness of the original color, and the color saturation of the original. Obtain the preset screen angle; Determine the pin angle based on the color saturation of the original artwork; Determine the dot value based on the required sharpness and the color saturation of the original artwork; The printing curve is determined based on the color parameters of the original artwork.

[0044] In this embodiment, a preset screen ruling range corresponding to the quality level requirement is determined, and the median of the preset screen ruling range is used as the initial screen ruling. The system then determines whether the original artwork has high color richness and high color saturation to obtain a comprehensive judgment result. Based on this comprehensive judgment result, an adjustment difference is determined, and the sum of the adjustment difference and the initial screen ruling is used as the screen ruling. The selectable quality levels corresponding to the quality level requirement can be three levels: low quality, medium quality, and high quality. Each quality level corresponds to a preset screen ruling range; the higher the quality level, the larger the screen ruling value of the preset screen ruling range. Optionally, the preset screen ruling range for low quality is 50-70, for medium quality is 70-90, and for high quality is 90-120.

[0045] The setting of the halftone screen angle follows certain industry standards or specifications to reduce color interference and moiré patterns. Staff can set the halftone screen angle based on their experience. Each color in the CMYK color group can correspond to one halftone screen angle.

[0046] For pinholes, staff can pre-set a correspondence between color saturation and pinhole angle based on practical experience. In this correspondence, the higher the color saturation, the smaller the pinhole angle. Then, the pinhole angle is determined from this correspondence based on the color saturation of the original artwork.

[0047] Halftone values ​​directly affect the color intensity of printed materials. Higher halftone values ​​produce richer colors, meaning higher saturation, but may also lead to a loss of detail. Workers can pre-establish a correspondence between color saturation and halftone values ​​based on practical experience, and determine the halftone value from this correspondence based on the original artwork's color saturation. Then, the halftone value is adjusted according to the required sharpness level, which can be low, medium, or high. When the required sharpness level is low, the halftone value can be increased to improve saturation; when it's medium, no adjustment is made; and when it's high, the halftone value can be decreased to improve sharpness. The specific adjustment values ​​for increasing or decreasing the halftone value are not limited in this embodiment; workers can set them based on practical experience.

[0048] For printing curves, the original is loaded, and the four color values ​​of C, M, Y, and K are obtained through a high-precision color scanner. Color management software (such as Adobe Color Engine, X-Rite eXact, GMG ColorProof, etc.) can read the four color values ​​and combine them with the characteristics of the printing equipment and the performance of the ink to generate printing curves.

[0049] This application's embodiments adjust the halftone screen based on quality grade, color richness, and saturation to ensure that image details are maintained while meeting specific quality grade requirements. The halftone angle is set to reduce moiré patterns (interference fringes caused by the overlapping of different colored inks) that may occur during printing. Pre-setting and following a reasonable halftone angle combination can significantly improve the visual effect of the printed matter. Adjusting the pin angle according to the color saturation of the original ensures that the printed matter can accurately reproduce the color effect of the original. By adjusting the dot value according to the sharpness requirements and color saturation, the printed matter can achieve the best balance between sharpness and color performance. By accurately setting the printing curve according to the color parameters of the original, the printed matter can accurately reproduce the color characteristics of the original.

[0050] One possible implementation of this application embodiment determines the halftone screen ruling based on quality level requirements, original color richness, and original color saturation, including: Determine the preset mesh range corresponding to the quality level requirements, and use the median of the preset mesh range as the initial mesh. Determine whether the original artwork has high color richness and high color saturation, and obtain a comprehensive judgment result; The adjustment difference is determined based on the comprehensive assessment results; The sum of the adjustment difference and the initial net length is used as the net length.

[0051] In this embodiment, both the original color richness and the original color saturation are represented numerically. The original color richness is compared to a preset richness threshold, and the original color saturation is also compared to a preset saturation threshold. If the original color richness exceeds the preset richness threshold, the original is marked as high richness; if the original color richness does not exceed the preset richness threshold, the original is marked as low richness. Similarly, if the original color saturation exceeds the preset saturation threshold, the original is marked as high saturation; if the original color saturation does not exceed the preset saturation threshold, the original is marked as low saturation.

[0052] Furthermore, if the overall judgment result is that the original artwork has high color richness and high saturation, then half of the preset screen ruling range of the initial screen ruling is used as the adjustment difference, and the sum of the adjustment difference and the initial screen ruling is used as the screen ruling. That is, the screen ruling is the maximum value within the preset screen ruling range of the initial screen ruling. If the overall judgment result is any of the following, then the adjustment difference is set to 0, meaning no adjustment is made to the initial screen ruling: Case 1: The original artwork has high color richness but not high saturation; Case 2: The original artwork has not high color richness but high saturation. If the overall judgment result is that the original artwork has neither high color richness nor high saturation, then -1 / 2 of the preset screen ruling range of the initial screen ruling is used as the adjustment difference, and the sum of the adjustment difference and the initial screen ruling is used as the screen ruling. That is, the screen ruling is the minimum value within the preset screen ruling range of the initial screen ruling.

[0053] This application provides a reasonable starting point by setting preset screen ruling ranges for different quality levels. Choosing the median of the range as the initial screen ruling is neither too conservative nor too aggressive, allowing for flexibility in subsequent adjustments. It determines whether the original artwork has high color richness and high color saturation, obtaining a comprehensive judgment result. This ensures the comprehensiveness and accuracy of screen ruling adjustments and allows for further optimization of screen ruling settings to better match the color characteristics of the original artwork and printing requirements.

[0054] One possible implementation of this application embodiment, determining whether the trial print meets the printing requirements of the original print, includes: Obtain the color parameters, sharpness, color saturation, color richness, and interference of the test print; Determine whether the color parameters, sharpness, color saturation, color richness, and interference meet the corresponding preset conditions; If any of the color parameters, sharpness, color saturation, color richness, or interference conditions do not meet the corresponding preset conditions, the printed artwork is determined to not meet the printing requirements of the original artwork.

[0055] In this embodiment, color parameters, sharpness, color saturation, and color richness can be extracted using image processing software (such as Photoshop, GIMP, etc.) or professional color management software (such as X-Rite ColorMaster). Color richness can be represented by the number of hues. For interference cases, several templates corresponding to the interference conditions can be pre-set and matched with features in the printed artwork to determine whether interference exists.

[0056] For color parameters, obtain each color channel in the color parameters, including C value, M value, Y value, and K value, as well as the original C value, original M value, original Y value, and original K value in the original color parameters. Calculate the first difference between the C value and the original C value, the second difference between the M value and the original M value, the third difference between the Y value and the original Y value, and the fourth difference between the K value and the original K value. Compare the first, second, third, and fourth differences with preset color channel difference thresholds. If any one of the first, second, third, and fourth differences exceeds the preset color channel difference threshold, the color parameter is determined not to meet the corresponding preset condition; if none of the first, second, third, and fourth differences exceed the preset color channel difference threshold, the color parameter is determined to meet the corresponding preset condition.

[0057] Regarding sharpness, it can be determined whether the sharpness meets the preset sharpness requirement corresponding to the sharpness level. Sharpness levels include high sharpness, medium sharpness, and low sharpness, each corresponding to a sharpness value range; the higher the level, the greater the corresponding sharpness value. If the sharpness of the obtained test print is outside the sharpness value range corresponding to the sharpness requirement, it is determined that the sharpness does not meet the corresponding preset condition. If the sharpness of the obtained test print is within the sharpness value range corresponding to the sharpness requirement, it is determined that the sharpness meets the corresponding preset condition.

[0058] For color saturation, the difference between the color saturation of the test print and the original can be determined to obtain the saturation deviation. Then, it is determined whether the absolute value of the saturation deviation is not greater than the preset saturation deviation threshold. If so, the color saturation is determined to meet the corresponding preset condition. If not, the color saturation is determined not to meet the corresponding preset condition.

[0059] For color richness, the difference between the color richness of the original and the color richness of the test print can be determined to obtain the richness deviation. It is then determined whether the richness deviation is not greater than the preset richness deviation threshold. If so, the color richness is determined to meet the corresponding preset condition; otherwise, the color richness is determined not to meet the corresponding preset condition.

[0060] The preset color channel difference threshold, preset saturation deviation threshold, and preset richness deviation threshold can be set based on actual experience, and this embodiment does not impose specific limitations.

[0061] In the case of interference, determine whether there is interference in the test print. If there is interference, it is determined that the interference does not meet the corresponding preset conditions. If there is no interference, it is determined that the interference meets the corresponding preset conditions.

[0062] This application embodiment obtains information from multiple dimensions of the test print, such as color parameters, sharpness, color saturation, color richness, and interference, which enables a comprehensive and detailed evaluation of the quality of the test print. Each dimension has corresponding preset conditions, which are based on the printing requirements of the original print and industry standards. Therefore, it can accurately determine whether the test print meets the requirements.

[0063] One possible implementation of this application embodiment involves adjusting printing parameters and / or printing curves, including: Items that do not meet the corresponding preset conditions among color parameters, sharpness, color saturation, color richness, and interference are designated as items to be adjusted; Adjust the printing parameters and / or printing curves corresponding to the items to be adjusted according to the preset correspondence; Among them, the preset correspondence is the correspondence between items and adjustment content. The preset correspondence includes: color parameters correspond to printing curves, clarity corresponds to halftone lines, color saturation corresponds to pin angles, color richness corresponds to halftone values, and interference corresponds to halftone angles.

[0064] In this embodiment, for color parameters, the color channels whose difference exceeds a preset color difference threshold are adjusted.

[0065] If the resolution does not meet the corresponding preset conditions, the net length can be increased. The specific net length can be preset according to actual needs, and this embodiment does not impose a specific limitation.

[0066] If the color saturation does not meet the corresponding preset conditions, a positive saturation deviation indicates that the saturation of the printed artwork is too high, and the pin angle can be increased. If the saturation deviation is negative, it indicates that the saturation of the printed artwork is insufficient, and the pin angle can be decreased. The specific degree of decrease or increase can be preset according to actual needs, and this embodiment does not make specific limitations.

[0067] If the color richness does not meet the corresponding preset conditions, the dot value can be increased. The specific degree of increase can be preset according to actual needs, and this embodiment does not make specific limitations.

[0068] If the interference does not meet the preset conditions, the color plate where interference occurs can be identified, and the halftone angle corresponding to the color plate with interference can be adjusted. For example, if interference occurs in the cyan plate, the cyan plate can be enlarged or reduced. The specific degree of reduction or enlargement can be preset according to actual needs, and this embodiment does not make specific limitations.

[0069] This application embodiment, by comparing the color parameters, clarity, color saturation, color richness, and interference of the trial print with the preset conditions, can accurately identify which items do not meet the requirements, i.e., the items to be adjusted. The preset correspondence provides clear guidance on the correspondence between the items to be adjusted and the content to be adjusted, ensuring the logic and consistency of the adjustment process, avoiding arbitrariness and blindness in the adjustment, and the efficient adjustment method helps to shorten the adjustment cycle and improve production efficiency.

[0070] One possible implementation of this application embodiment is to determine whether the color parameters meet the corresponding preset conditions, including: Obtain the C, M, Y, and K values ​​from the color parameters, as well as the original C, M, Y, and K values ​​from the original color parameters; Calculate the first degree of difference between the C value and the original C value, the second degree of difference between the M value and the original M value, the third degree of difference between the Y value and the original Y value, and the fourth degree of difference between the K value and the original K value; The first difference, second difference, third difference, and fourth difference are compared with preset color channel difference thresholds, respectively. If any of the first, second, third, and fourth differences exceeds the preset color channel difference threshold, then the color parameters are determined not to meet the corresponding preset conditions.

[0071] In this embodiment, the first difference is the absolute value of the difference between the C value and the original C value; the second difference is the absolute value of the difference between the M value and the original M value; the third difference is the absolute value of the difference between the Y value and the original Y value; and the fourth difference is the absolute value of the difference between the K value and the original K value. Colors whose difference exceeds a preset color channel difference threshold among the first, second, third, and fourth differences are designated as color channels to be adjusted. If the difference corresponding to the color channel to be adjusted is negative, the color value of the corresponding color channel is increased; if the difference corresponding to the color channel to be adjusted is positive, the color value of the corresponding color channel is decreased. The degree of increase or decrease can be preset according to actual needs, and this embodiment does not impose specific limitations.

[0072] This application embodiment obtains the values ​​of four color channels—C (cyan), M (magenta), Y (yellow), and K (black)—and calculates their differences from the corresponding values ​​in the original color parameters. This achieves precise quantification of color differences, helps to capture differences in color details, ensures a comprehensive evaluation of color changes, and provides a clear quantitative standard for judging whether color parameters meet the requirements by setting a preset color channel difference threshold. This helps to ensure that the color quality of printed materials meets expectations.

[0073] One possible implementation of this application embodiment includes edge sharpness in terms of clarity. Determine whether the sharpness meets the corresponding preset conditions, including: Obtain the edge sharpness of the original print file; Determine the difference in edge sharpness between the edge sharpness of the original document and the edge sharpness of the original document; Determine whether the edge sharpness difference exceeds the preset edge sharpness difference threshold; If the threshold is exceeded, the image clarity is determined to be inconsistent with the corresponding preset conditions.

[0074] In this embodiment, the edge sharpness of the original manuscript and the printed manuscript can be obtained using image analysis software. Specifically, edge detection algorithms can be used, such as the Sobel operator, Prewitt operator, and Canny operator. These algorithms can identify edges in the image and quantify edge sharpness. The preset edge sharpness difference threshold can be set based on practical experience.

[0075] This application embodiment achieves precise quantification of sharpness differences by obtaining the edge sharpness of the printed matter and the edge sharpness of the original document, and calculating the difference between them, making the sharpness assessment more objective and accurate.

[0076] This application provides a computer program product, including a computer program that, when executed by a processor, implements the content shown in the aforementioned embodiment of the gravure printing plate electronic engraving method.

[0077] This application provides an electronic device, such as... Figure 2 As shown, Figure 2 The illustrated electronic device 200 includes a processor 201 and a memory 203. The processor 201 and the memory 203 are connected, for example, via a bus 202. Optionally, the electronic device 200 may also include a transceiver 204. It should be noted that in practical applications, the transceiver 204 is not limited to one type, and the structure of this electronic device 200 does not constitute a limitation on the embodiments of this application.

[0078] Processor 201 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 201 may also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0079] Bus 202 may include a pathway for transmitting information between the aforementioned components. Bus 202 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 202 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 2 The symbol is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0080] The memory 203 may be a ROM (Read Only Memory) or other type of static storage device capable of storing static information and instructions, RAM (Random Access Memory) or other type of dynamic storage device capable of storing information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0081] The memory 203 is used to store the application code that executes the scheme of this application, and its execution is controlled by the processor 201. The processor 201 is used to execute the application code stored in the memory 203 to implement the content shown in the aforementioned embodiment of the gravure printing plate electronic engraving method.

[0082] Figure 2 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0083] This application provides a computer-readable storage medium storing a computer program that, when run on a computer, enables the computer to execute the content shown in the aforementioned embodiment of the gravure printing plate electronic engraving method.

[0084] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0085] The above are only some embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An electronic engraving method for intaglio plate making, characterized in that, include: Obtain the printing quality requirements and color information of the original artwork; The printing parameters and printing curves are determined based on the printing quality requirements and the original color information. Trial printing steps: Control the printing equipment to perform trial printing on the original artwork according to the printing parameters and the printing curve to obtain a trial print, and determine whether the trial print meets the printing requirements of the original artwork; If the requirements are not met, adjust the printing parameters and / or the printing curve, and perform the trial printing step. If the conditions are met, the original printout will be printed according to the printing parameters and printing curves corresponding to the case where the trial printout meets the printing requirements of the original printout. The printing quality requirements include quality grade requirements and clarity requirements; the original color information includes original color richness, original color saturation, and original color parameters; and the printing parameters include halftone lines, halftone angle, pin angle, and dot value. The step of determining printing parameters and printing curves based on the printing quality requirements and the original color information includes: The halftone screen is determined based on the quality level requirements, the color richness of the original artwork, and the color saturation of the original artwork. Obtain the preset screen angle; The needle angle is determined based on the color saturation of the original artwork; The dot value is determined based on the required sharpness and the original color saturation. Determine the printing curve based on the original color parameters; The process of determining the halftone screen based on the quality level requirements, the original artwork's color richness, and the original artwork's color saturation includes: Determine the preset range of mesh lines corresponding to the quality level requirements, and use the median of the preset range of mesh lines as the initial mesh line; Determine whether the original artwork has high color richness and high color saturation, and obtain a comprehensive judgment result. The adjustment difference is determined based on the comprehensive judgment result. The sum of the adjustment difference and the initial net length is taken as the net length; Both the color richness and color saturation of the original artwork are represented numerically. The determination of whether the color richness and color saturation of the original artwork are high, and the resulting comprehensive judgment, includes: The original color richness is compared with a preset richness threshold, and the original color saturation is compared with a preset saturation threshold. If the color richness of the original document exceeds the preset richness threshold, the original document is marked as high richness; if the color richness of the original document does not exceed the preset richness threshold, the original document is marked as low richness. If the color saturation of the original document exceeds the preset saturation threshold, the original document is marked as high saturation; if the color saturation of the original document does not exceed the preset saturation threshold, the original document is marked as low saturation. The step of determining whether the trial print meets the printing requirements of the original print includes: Obtain the color parameters, sharpness, color saturation, color richness, and interference of the test print; Determine whether the color parameters, the sharpness, the color saturation, the color richness, and the interference condition meet the corresponding preset conditions; If any of the color parameters, the sharpness, the color saturation, the color richness, and the interference condition does not meet the corresponding preset conditions, then the trial print is determined to not meet the printing requirements of the original print. Adjusting the printing parameters and / or the printing curve includes: The items among the color parameters, the sharpness, the color saturation, the color richness, and the interference conditions that do not meet the corresponding preset conditions are designated as items to be adjusted. The printing parameters and / or printing curves corresponding to the items to be adjusted are adjusted according to the preset correspondence. The preset correspondence is the correspondence between the items to be adjusted and the content to be adjusted. The preset correspondence includes: the color parameter corresponds to the printing curve, the clarity corresponds to the halftone screen, the color saturation corresponds to the pin angle, the color richness corresponds to the halftone dot value, and the interference condition corresponds to the halftone screen angle. Determining whether the color parameters meet the corresponding preset conditions includes: Obtain the C, M, Y, and K values ​​from the color parameters, as well as the original C, M, Y, and K values ​​from the original color parameters; Calculate the first degree of difference between the C value and the C value of the original, the second degree of difference between the M value and the M value of the original, the third degree of difference between the Y value and the Y value of the original, and the fourth degree of difference between the K value and the K value of the original; The first difference, the second difference, the third difference, and the fourth difference are compared with preset color channel difference thresholds, respectively. If any one of the first difference, the second difference, the third difference, and the fourth difference exceeds the preset color channel difference threshold, then the color parameter is determined not to meet the corresponding preset condition. The sharpness includes edge sharpness. Determining whether the sharpness meets the corresponding preset conditions includes: Obtain the edge sharpness of the original printed document; Determine the edge sharpness difference between the stated edge sharpness and the original document's edge sharpness; Determine whether the edge sharpness difference exceeds a preset edge sharpness difference threshold; If the threshold is exceeded, the resolution is determined to not meet the corresponding preset conditions.

2. A computer program product, characterized in that, It includes a computer program, which, when executed by a processor, implements the steps of the gravure printing plate electronic engraving method of claim 1.

3. An electronic device, characterized in that, include: At least one processor; Memory; At least one application, wherein the at least one application is stored in memory and configured to be executed by at least one processor, said at least one application being configured to: perform the gravure printing plate electronic engraving method of claim 1.

4. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed in the computer, the computer is instructed to perform the gravure printing plate electronic engraving method according to claim 1.

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