A packaging printing method, apparatus, storage medium and program product

Abstract

The application provides a packaging printing method, device, storage medium and program product, the packaging printing method comprises the following steps: S1: obtaining historical printing data, the historical printing data comprises a printing material, a printing process, a reference size and an actual size; S2: based on the reference size and the actual size, a lateral compensation library and a longitudinal compensation library are constructed; S3: according to the lateral compensation library and the longitudinal compensation library, the original printing parameters are compensated, and target printing parameters are determined; S4: according to the target printing parameters, the packaging to be printed is printed. The present application relies on historical printing sample data, classifies and collects according to the printing material category and the printing process stage, and layer-by-layer constructs a lateral size compensation library and a longitudinal size compensation library, so that printing size layer-by-layer control and process-differentiated accurate compensation can be realized.

Description

Technical Field

[0001] This application belongs to the field of packaging and printing, and specifically relates to a packaging printing method, packaging printing apparatus, storage medium, and program product. Background Technology

[0002] Among the existing technologies related to printing registration error compensation, the closest one is the registration error compensation method of the combined rotary screen printing and digital printing device described in the published patent CN108016127B. This existing solution mainly relies on online image acquisition to visually capture the pattern printed in the previous process, calculate the deviation of the repeat length and the deviation of the pattern position, and then adjust the start-up timing of the subsequent printing unit and the pattern printing size to complete the real-time compensation of the registration error.

[0003] The compensation determination criteria of this type of existing technology are entirely derived from the real-time detection data of the printed pattern that has already been formed during the production process. The core technology focuses on dynamic real-time correction during the printing production process, and does not conduct systematic statistics and prediction on the material size deformation law under different types of printing materials and multiple processing steps in the pre-press design stage.

[0004] Meanwhile, such compensation schemes are mostly adapted to specific combination printing equipment. The overall technical approach is designed around the closed-loop control logic of image acquisition and recognition error and fine-tuning of sampling or supplementary points in the next printing stage. Its compensation target is limited to the pattern deviation and registration position deviation between adjacent printed patterns. It cannot adapt to the problem of horizontal and vertical overall expansion and contraction deformation of the substrate material that is common in the packaging and printing industry, and its applicable scenarios are obviously limited.

[0005] Furthermore, these compensation modes that rely on online detection and subsequent correction all implement deviation adjustments during the mass production process. By this time, the dimensional deviations generated in the earlier processes have already been formed. This not only increases the number of trial prints and raises the cost of equipment adjustment and production debugging, but also disrupts the normal production flow and restricts overall production efficiency.

[0006] Packaging and printing products generally require multiple consecutive processing steps, including offset printing, gravure printing, embossing, and die-cutting. Each step can easily cause varying degrees of deformation in the dimensions of the printing substrate. If dimensional compensation parameters cannot be preset in advance during the pre-press preparation stage, taking into account the product's corresponding process path and the deformation characteristics of the printing substrate itself, it is difficult to curb the problem of dimensional deviations being transmitted and amplified step by step along the entire process flow, and it is impossible to fundamentally achieve unified control over dimensional accuracy throughout the entire process. Summary of the Invention

[0007] In view of this, the purpose of this application is to provide a packaging printing method, apparatus, storage medium, and process product to solve the above-mentioned problems.

[0008] To solve the above-mentioned technical problems, this application adopts the following technical solution: In a first aspect, this application provides a packaging printing method, which includes: step S1: acquiring historical printing data, including printing material, printing process, reference size and actual size; step S2: constructing a horizontal compensation library and a vertical compensation library based on the reference size and actual size; step S3: compensating the original printing parameters according to the horizontal compensation library and the vertical compensation library to determine the target printing parameters; step S4: printing the packaging to be printed according to the target printing parameters.

[0009] Furthermore, the printing process includes at least one of the following: pre-press plate making, offset printing, gravure printing, flexographic printing, screen printing, hot stamping, lamination, die cutting, mounting, and trimming; the reference size is the preset standard printing size, and the actual size is the final output printing size.

[0010] Furthermore, in the historical printing data, each printing substrate has a corresponding printing process, and the printing process maps the associated reference size and the actual size.

[0011] Further, step S2 includes: step S21: grouping according to the printing material and printing process, and establishing a horizontal compensation library and a vertical compensation library; step S22: statistically processing the reference size and actual size in the horizontal compensation library and the vertical compensation library to obtain the printing variation and expansion amount, which includes the base value, mean, median, standard deviation and fluctuation range; step S23: storing the printing variation and expansion amount in the corresponding horizontal compensation library and vertical compensation library.

[0012] Furthermore, the basic values ​​include dimensionless relative expansion and contraction in the lateral direction and dimensionless relative expansion and contraction in the longitudinal direction. The formula for calculating the dimensionless relative expansion and contraction in the lateral direction is:

[0013] in, For the first Historical printing plate-making dimensions at each stage of the process. Based on the printing plate size, For the first The dimensionless relative expansion and contraction in the lateral direction of a process stage; The formula for calculating the dimensionless relative stretching in the longitudinal direction is:

[0014] in, For the first Historical printing plate-making dimensions at each stage of the process. Based on the printing plate size, For the first The dimensionless relative expansion and contraction in the longitudinal direction of the process stage.

[0015] Furthermore, step S3 includes: step S31: matching the horizontal compensation library and the vertical compensation library according to the type of substrate and printing process of the packaging to be printed, and obtaining compensation parameters; step S32: compensating the original printing parameters according to the compensation parameters, and determining the target printing parameters.

[0016] Secondly, this application provides a packaging printing apparatus, which includes: an acquisition module, a construction module, a compensation module, and a printing module. The acquisition module is used to acquire historical printing data, including the printing substrate, printing process, reference size, and actual size. The construction module is used to construct a horizontal compensation library and a vertical compensation library based on the reference size and the actual size. The compensation module is used to compensate the original printing parameters according to the horizontal compensation library and the vertical compensation library to determine the target printing parameters. The printing module is used to print the packaging to be printed according to the target printing parameters.

[0017] Thirdly, this application provides a computer system including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the above-described packaging printing method.

[0018] Fourthly, this application provides a computer-readable storage medium having a computer program / instructions stored thereon, which, when executed by a processor, implements the steps of the above-described packaging printing method.

[0019] Fifthly, this application provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the above-described packaging printing method.

[0020] As can be seen from the above technical solutions, the advantages and positive effects of the packaging printing method, apparatus, storage medium, and program products proposed in this application are as follows: This invention can uniformly analyze the original dimensional measurement data of various printing processes such as offset printing and gravure printing, convert them into dimensionless relative expansion and contraction in the horizontal and vertical directions, complete the standardized and unified characterization of cross-printing process data, and realize the horizontal comparison and collaborative analysis of dimensional deviation data of different processes.

[0021] Meanwhile, this invention relies on historical printing sample data, classifies and collects it according to the type of printing material and the stage of printing process, and builds a horizontal dimension compensation library and a vertical dimension compensation library in layers. It can realize layered control of printing size and precise compensation for differences in each process. The size deviation correction is more targeted, effectively reducing the deviation between the actual size of the printed product and the reference size, greatly improving the size accuracy of packaging printing and the yield of finished products, and adapting to the needs of large-scale packaging printing production with multiple materials and multiple printing processes. Attached Figure Description

[0022] The above description of this application and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solutions.

[0023] Figure 1 This is a flowchart of the packaging printing process. Detailed Implementation

[0024] The detailed features and advantages of this application are described below in the specific embodiments. The content of this description is sufficient to enable any person skilled in the art to understand the technical content of this application and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this application.

[0025] The invention will now be described with reference to the accompanying drawings, in which similar reference numerals denote similar elements. While specific structures and arrangements are discussed, it should be understood that this is done merely for illustrative purposes. Those skilled in the art will recognize that other structures and arrangements can be used without departing from the spirit and scope of the invention. It will be apparent to those skilled in the art that the invention can also be used in a variety of other applications.

[0026] In this specification and claims, several terms will be used, and unless otherwise indicated, these terms will be defined to have the following meanings: The singular forms “a” and “the” include their corresponding plural forms. “At least one” means one or more, and “more” means two or more. “At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0027] All figures used to represent component amounts, properties (e.g., molecular weight), reaction conditions, etc., should be considered to be modified in all cases by the terms "within the unavoidable margin of error" or "about". Therefore, the numerical values ​​set forth herein are approximate and may vary depending on the desired properties sought to be obtained by the present invention. The principle of equivalents, which is applied to a minimum and not intended to limit the scope of the claims, should be applied, for example, each value should be interpreted at least according to the specified significant digits and by applying conventional rounding techniques.

[0028] It should be understood that 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 alone, A and B simultaneously, or B alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0029] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Unless otherwise indicated, the following abbreviations have the following meanings, and any other abbreviations used herein but not defined have their generally accepted standard meanings: All other terms used herein that are specifically defined herein shall have the general meaning understood by one of ordinary skill in the art, in particular meaning that one of ordinary skill in the art, upon reading the claims, specification and drawings of this patent, can directly and without doubt determine how the technical solution of this patent can be implemented.

[0031] Even if there are incomplete descriptions, omissions, or ambiguities in the grammar, words, punctuation, graphics, symbols, etc. of the claims, specification, and drawings of this patent, a person skilled in the art can still arrive at the only correct understanding by reading the claims, specification, and drawings as a whole without extensive reasoning or experimentation, and effectively exclude various incorrect interpretations that are not aimed at achieving the purpose of this patent.

[0032] Those skilled in the art would first choose to read the claims, specification, and drawings of this patent to reasonably interpret the terms; secondly, they would choose to refer to the relevant definitions in other documents published by the applicant before the filing date to reasonably interpret the terms; thirdly, they would choose the references cited in this patent to reasonably interpret the terms; and finally, they would choose to combine the technical dictionaries, technical manuals, reference books, textbooks, national or industry technical standards, etc., commonly used by those skilled in the art to reasonably interpret the terms.

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0034] Please refer to Figure 1 This application provides a packaging printing method, the specific steps of which are as follows: Step S1: Obtain historical printing data, which includes printing materials, printing processes, reference dimensions, and actual dimensions.

[0035] The printing process includes at least one of the following processes in the entire packaging printing process: pre-press plate making, offset printing, gravure printing, flexographic printing, screen printing, hot stamping, lamination, die cutting, mounting, and cutting. It can be adapted to production scenarios involving single-process processing or multi-process combination processing.

[0036] The baseline size is the preset standard printing size, and the actual size is the final printed size set for the product.

[0037] Due to significant differences in the processing principles, equipment control standards, and dimension recording dimensions of various printing processes, the original dimension recording formats and data standards are inconsistent across different process stages, making them unsuitable for direct deviation comparison and compensation analysis. Therefore, this step requires standardizing and unifying the analysis and processing of the original dimension recording data collected from each process, discarding the differentiated data statistical standards of each process, and uniformly extracting standardized horizontal and vertical dimension values ​​to achieve standardized conversion of dimension data across all processes.

[0038] The specific data parsing and extraction methods are as follows: For the offset printing process, the printed sheets are the main focus of inspection. The actual horizontal and vertical dimensions of the printed sheets after they are formed are accurately extracted as the core dimensional data for the offset printing process.

[0039] For the gravure printing process, relying on the equipment's registration control system, process inspection marks, and graphic printing area, key data such as the precise registration control size, alignment mark spacing, and effective graphic printing area size are extracted and converted into the corresponding horizontal and vertical dimension parameters.

[0040] For the die-cutting process, the final packaged product outline is used as the inspection benchmark. The overall horizontal and vertical dimensions corresponding to the outer contour of the finished product are accurately collected as the basis for dimensional analysis of the die-cutting process.

[0041] In this step, historical printing data is associated and matched according to the production dimension. Each type of printing material is matched with the corresponding printing process. At the same time, a mapping relationship between the reference size and the actual size is established through the printing process, so as to realize the structured collection and corresponding binding of printing data of multiple processes and multiple materials.

[0042] Step S2: Based on the reference dimensions and actual dimensions, construct the lateral compensation library and the longitudinal compensation library.

[0043] Step S2 includes: Step S21: Group the materials and printing processes according to the printing substrate and establish horizontal compensation library and vertical compensation library.

[0044] For example, the present invention uses a two-dimensional approach of combining the printing substrate with the printing process for fine grouping, which can accurately cover the dimensional deformation differences of different materials and different processing stages.

[0045] Specifically, multiple types of precise grouped samples can be formed: white cardboard - offset printing stage 1, white cardboard - offset printing stage 2, transfer paper - gravure printing stage, laser paper - die-cutting pre-forming stage, etc.

[0046] Under different grouping scenarios, the expansion and contraction characteristics of the printing substrate, the processing tension of the equipment, the influence of temperature and humidity, and the degree of process deformation all vary significantly. Therefore, each group of data is independently collected with corresponding standardized horizontal and vertical dimension parameters. The horizontal dimension parameters of each group are uniformly collected and stored in the horizontal compensation library, and the vertical dimension parameters are uniformly collected and stored in the vertical compensation library. This enables the classified storage, accurate correspondence, and independent retrieval of compensation data, providing accurate data support for subsequent differentiated parameter compensation.

[0047] Step S22: Perform statistical processing on the reference dimensions and actual dimensions in the horizontal compensation library and the vertical compensation library to obtain the printing variation and expansion amount. The printing variation and expansion amount includes the base value, mean, median, standard deviation and fluctuation range.

[0048] The basic values ​​include dimensionless relative expansion and contraction in the horizontal direction and dimensionless relative expansion and contraction in the vertical direction. The formula for calculating the dimensionless relative expansion and contraction in the horizontal direction is:

[0049] in, For the first Actual lateral dimensions at each stage of the process. For the horizontal reference dimension, For the first The dimensionless relative expansion and contraction in the lateral direction of a process stage; The formula for calculating the dimensionless relative stretching in the longitudinal direction is:

[0050] in, For the first The actual longitudinal dimensions of each process stage For longitudinal reference dimensions, For the first The dimensionless relative expansion and contraction in the longitudinal direction of the process stage.

[0051] It should be noted that this invention uses the basic value of dimensional expansion and contraction corresponding to each group of processes and materials as the core calculation basis, and uses mathematical statistical algorithms to calculate multi-dimensional characteristic parameters such as the mean, median, standard deviation and data fluctuation range of the expansion and contraction.

[0052] Among them, the mean and median values ​​are used to characterize the conventional stretching reference level of printing materials under corresponding working conditions, and can serve as the core compensation basis for conventional production.

[0053] Standard deviation and fluctuation range are used to reflect the dispersion and fluctuation range of dimensional expansion and contraction data, and can effectively identify special working conditions such as extreme deformation and abnormal deviation.

[0054] The specific calculation methods, formulas, and operational logic of the above-mentioned mathematical statistics are all conventional and mature technical means in this field and are existing well-known technologies. Therefore, this specification will not elaborate on their specific calculation steps here.

[0055] Step S23: Store the printing variation stretching amount in the corresponding horizontal compensation library and vertical compensation library.

[0056] Step S3: Based on the horizontal compensation library and the vertical compensation library, compensate the original printing parameters to determine the target printing parameters.

[0057] For the product to be printed, read its substrate type, target process path, and current compensation application stage, match the corresponding group compensation library, and retrieve the horizontal printing compensation value. and vertical printing compensation value .

[0058] Taking the variation in printing mean as an example, the compensation for the original printing parameters is explained as follows:

[0059]

[0060] in, This is the horizontal printing compensation value; This is the vertical printing compensation value; This represents the mean of the lateral relative scaling of the historical samples in this group. This represents the mean of the longitudinal relative scaling of the historical samples in this group.

[0061] Further generate suggested pre-press scaling factors:

[0062]

[0063] in, This is a suggested scaling factor for the horizontal direction. This represents the vertical scaling factor.

[0064] Step S4: Print the packaging according to the target printing parameters.

[0065] In the specific parameter compensation process, this invention relies on the lateral scaling data obtained from the compensation library to generate a suggested lateral scaling coefficient adapted to the current production conditions. This coefficient is then used to precisely scale and correct the preset lateral base printing plate size of the equipment. The specific calculation logic is as follows: the suggested lateral scaling coefficient is multiplied by the lateral base printing plate size to obtain the lateral target printing parameters, completing the offsetting and adaptive correction of lateral size deviations, and finally obtaining accurate and compliant lateral target printing parameters, effectively eliminating lateral size deviations caused by material stretching, equipment deviations, and process errors.

[0066] Similarly, compensation data in the vertical dimension is retrieved to generate a suggested vertical scaling factor, which is then used for adaptive scaling correction of the vertical base printing plate size. The target vertical printing parameters are obtained by multiplying the suggested vertical scaling factor by the vertical base printing plate size. This corrects for vertical dimensional deviations caused by material deformation, equipment tension fluctuations, and changes in environmental temperature and humidity during the printing process, accurately outputting the target vertical printing parameters that meet design standards. This invention employs a method of independent horizontal and vertical partition compensation, breaking away from the traditional coarse-grained approach of uniformly fine-tuning printing parameters, and achieving precise independent correction of dimensional deviations in both dimensions.

[0067] Based on the same inventive concept, this application also provides a packaging printing apparatus, which includes: an acquisition module, a construction module, a compensation module, and a printing module.

[0068] The acquisition module is used to acquire historical printing data, which includes printing materials, printing processes, reference dimensions, and actual dimensions. The building module is used to construct the lateral compensation library and the longitudinal compensation library based on the reference size and the actual size; The compensation module is used to compensate the original printing parameters based on the horizontal compensation library and the vertical compensation library to determine the target printing parameters; The printing module is used to print on the packaging according to the target printing parameters.

[0069] It is understood that the packaging printing apparatus provided in this application corresponds to the packaging printing method provided in this application. In order to keep the description concise, the same or similar parts can be referred to the contents of the packaging printing method section, and will not be repeated here.

[0070] Each module in the aforementioned packaging and printing apparatus can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in the server, or stored in the server's memory as software, so that the processor can call and execute the corresponding operations of each module. The processor can be a central processing unit (CPU), a microprocessor, a microcontroller, etc.

[0071] The above-described packaging printing method and / or packaging printing apparatus can be implemented as a computer-readable instruction that can run on a computer system.

[0072] This application also provides a computer system including a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-described packaging printing method.

[0073] The computer system can be a server. The computer system includes a processor, a non-volatile storage medium, internal memory, an input device, a display screen, and a network interface connected via a system bus. The non-volatile storage medium of the computer system can store an operating system and computer-readable instructions. When executed, these computer-readable instructions cause the processor to perform a packaging printing method according to various embodiments of this application. The specific implementation process of this method can be found in [reference needed]. Figure 1 The specific details will not be elaborated here.

[0074] The processor of this computer system provides computing and control capabilities, supporting the operation of the entire system. The internal memory stores computer-readable instructions, which, when executed by the processor, cause the processor to perform a packaging printing method. The computer system's input devices are used for inputting various parameters, the display screen is used for display, and the network interface is used for network communication.

[0075] Based on the same inventive concept, embodiments of this application provide a computer-readable storage medium storing computer-readable instructions, which, when executed by a processor, implement the steps in the above-described packaging printing method.

[0076] The memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory.

[0077] Volatile memory can be random access memory (RAM), which serves as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), sync link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM).

[0078] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions or computer programs.

[0079] When computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions according to the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means.

[0080] Computer-readable storage media can be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more sets of available media. Available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media. Semiconductor media can be solid-state drives (SSDs).

[0081] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0082] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0083] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0084] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0085] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0086] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0087] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0088] In this specification, references to "an embodiment" or "a specific implementation" mean that a particular feature, structure, or characteristic described in connection with that embodiment / specific implementation is included in at least one embodiment / specific implementation of the invention. Therefore, the phrase "in one embodiment / specific implementation" appearing in various places in this specification does not necessarily refer to the same embodiment / setting, but rather to potentially different embodiments. Furthermore, specific features, structures, or characteristics may be combined in one or more embodiments / settings in any suitable manner, as will be apparent to those skilled in the art from this disclosure.

[0089] Similarly, it should be understood that in the above description of exemplary embodiments / specific implementations of the invention, various features of the invention are sometimes combined in a single embodiment / specific implementation or its figures and description, with the aim of simplifying the disclosure and aiding in the understanding of one or more of the various aspects of the invention. However, the method of description in this patent should not be construed as reflecting an intention that the claimed features of the invention are more than those expressly stated in each claim, except where explicitly stated otherwise or in obvious technical contradiction or exclusion. Rather, the inventive aspect reflected in the claims lies in not all the features of a single foregoing disclosed embodiment / specific implementation. Therefore, the claims following the detailed description are expressly incorporated herein by reference, each claim existing independently as a separate embodiment / specific implementation of the invention.

[0090] Furthermore, while some embodiments / specific implementations described herein include, but are not limited to, other features included in other embodiments / specific implementations, combinations of features from different embodiments / specific implementations are intended to be within the scope of the invention and form different embodiments / specific implementations, as will be understood by those skilled in the art. For example, in the following claims, embodiments / specific implementations of any claim can be used in any combination.

[0091] The terms and expressions used in this specification are for illustrative purposes and not for limitation. In using these terms and expressions, it is not intended to exclude any equivalents of the features or portions thereof shown and described, but rather to recognize that various modifications may be possible within the scope of the invention.

[0092] Therefore, it should be understood that although the invention has been specifically disclosed through preferred embodiments, exemplary embodiments and optional features, those skilled in the art may take variations or modifications of the concepts disclosed herein, and such variations and modifications are therefore considered to be within the scope of the invention as defined by the appended claims.

[0093] The specific embodiments given in this specification are examples of useful implementations of the present invention. It will be apparent to those skilled in the art that the present invention can be implemented using many variations of the devices, device components, and method steps disclosed in this specification.

[0094] The foregoing description of specific embodiments fully discloses the general features of the present invention, enabling others to easily modify and / or adapt such specific embodiments for various applications by applying knowledge within the scope of the art, without conducting excessive experimentation and without departing from the general concept of the present invention.

[0095] Therefore, based on the teachings and guidance provided herein, it is intended that such modifications and alterations be included within the meaning and scope of equivalents of the disclosed embodiments. It should be understood that the wording or terminology used herein is for descriptive purposes and is not intended to be limiting; thus, the wording or terminology in this specification will be interpreted by those skilled in the art based on the foregoing teachings and guidance.

[0096] Furthermore, the scope of the invention should not be limited to any of the exemplary embodiments described above, but only to the appended claims and their equivalents.

Claims

1. A packaging printing method, characterized in that, The packaging printing method includes: Step S1: Obtain historical printing data, which includes printing material, printing process, reference size, and actual size; Step S2: Based on the reference dimensions and the actual dimensions, construct the lateral compensation library and the longitudinal compensation library; Step S3: Based on the horizontal compensation library and the vertical compensation library, compensate the original printing parameters to determine the target printing parameters; Step S4: Print the packaging to be printed according to the target printing parameters.

2. The packaging printing method according to claim 1, characterized in that, The printing process includes at least one of the following: pre-press plate making, offset printing, gravure printing, flexographic printing, screen printing, hot stamping, lamination, die cutting, paper mounting, and cutting. The reference size is the preset standard printing size, and the actual size is the final printed size set for the product.

3. The packaging printing method according to claim 1, characterized in that, In the historical printing data, each of the printing substrates has a corresponding printing process, and the printing process maps and associates the reference size with the actual size.

4. The packaging printing method according to claim 1, characterized in that, Step S2 includes: Step S21: Group the materials according to the printing substrate and the printing process, and establish the horizontal compensation library and the vertical compensation library; Step S22: Perform statistical processing on the reference size and the actual size in the horizontal compensation library and the vertical compensation library to obtain the printing variation stretching amount, which includes the base value, mean, median, standard deviation and fluctuation range; Step S23: Store the printing variation stretching amount in the corresponding horizontal compensation library and the vertical compensation library.

5. The packaging printing method according to claim 4, characterized in that, The basic values ​​include dimensionless relative scaling in the horizontal direction and dimensionless relative scaling in the vertical direction. The formula for calculating the dimensionless relative expansion and contraction in the lateral direction is: in, For the first Historical printing plate-making dimensions at each stage of the process. Based on the printing plate size, For the first The dimensionless relative expansion and contraction in the lateral direction of a process stage; The formula for calculating the longitudinal dimensionless relative expansion is: in, For the first Historical printing plate-making dimensions at each stage of the process. Based on the printing plate size, For the first The dimensionless relative expansion and contraction in the longitudinal direction of the process stage.

6. The packaging printing method according to claim 1, characterized in that, Step S3 includes: Step S31: Based on the type of substrate and printing process of the packaging to be printed, match the horizontal compensation library and the vertical compensation library to obtain compensation parameters; Step S32: Compensate the original printing parameters according to the compensation parameters to determine the target printing parameters.

7. A packaging printing apparatus, characterized in that, The packaging printing apparatus includes: an acquisition module, a construction module, a compensation module, and a printing module. The acquisition module is used to acquire historical printing data, which includes printing materials, printing processes, reference dimensions, and actual dimensions. The construction module is used to construct a lateral compensation library and a longitudinal compensation library based on the reference size and the actual size; The compensation module is used to compensate the original printing parameters according to the horizontal compensation library and the vertical compensation library to determine the target printing parameters; The printing module is used to print on the packaging to be printed according to the target printing parameters.

8. A computer system comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the packaging printing method according to any one of claims 1-6.

9. A computer-readable storage medium having a computer program / instructions stored thereon, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the packaging printing method according to any one of claims 1-6.

10. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the packaging printing method according to any one of claims 1-6.

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