Multi-color photochromic printing method

Abstract

The invention provides a multi-color light-variable printing method which comprises the following steps: inputting a printing stock into a silk-screen printing unit, and printing silk-screen images and texts on the printing stock; inputting the printing stock into a first magnetization and variable pre-curing unit, and forming a variable optical variable number on the silk screen image-text according to the number sheet; the printing stock is input into a second magnetization and pre-curing unit, and the silk screen image-text is magnetized and comprehensively cured to form a second optical variable image-text; the printing stock is input into a number printing unit, and variable crown word numbers are printed on the printing stock according to the number sheet; the printing stock is input into a drying and curing unit to be dried and cured; a printing stock is sequentially input into the coating unit, the cutting unit, the sorting unit and the packaging unit to be coated, cut, sorted and packaged. According to the invention, a multi-color light-variable technology with a visual effect of multi-dynamic light-variable splicing or staggering, a micron-scale image-text fine degree, one or combination of anti-counterfeiting characteristics such as variable information and the like can be realized.

Description

Technical Field

[0001] The present application relates to the field of anti-counterfeiting printing technology, and in particular to a multi-color optically variable printing method. Background Art

[0002] Currently, printing equipment around the world can achieve single or multiple, fixed or variable effect optical variable technology for the same screen-printed image and text. All of them are only presented on the substrate as independent anti-counterfeiting features, and are not combined with other personalized feature information such as graphics, text, numbers, crown numbers, QR codes, barcodes, etc. on the substrate. Summary of the invention

[0003] This application aims to solve or improve the above technical problems.

[0004] To this end, the first objective of the present application is to provide a multi-color optically variable printing method.

[0005] To achieve the first purpose of the present application, the technical solution of the first aspect of the present invention provides a multi-color optically variable printing method, including: inputting a substrate into a screen printing unit and printing a screen image on the substrate; inputting the substrate into a first magnetization and variable pre-curing unit, and forming a variable optically variable number on the screen image according to a number list; inputting the substrate into a second magnetization and pre-curing unit, magnetizing and fully curing the screen image to form a second optically variable image; inputting the substrate into a number printing unit, and printing a variable crown number on the substrate according to the number list; inputting the substrate into a drying and curing unit for drying and curing; inputting the substrate into a coating unit, a cutting unit, a sorting unit, and a packaging unit in sequence for coating, cutting, sorting, and packaging.

[0006] According to the multi-color optically variable printing method provided by the present application, the substrate is first input into the screen printing unit, and the screen image is printed on the substrate. Then the substrate is input into the first magnetization and variable pre-curing unit, and a variable optically variable number is formed on the screen image according to the number list. The substrate is input into the second magnetization and pre-curing unit, and the screen image is magnetized and fully cured to form a second optically variable image. The substrate is input into the number printing unit, and a variable crown number is printed on the substrate according to the number list. The substrate is input into the drying and curing unit for drying and curing. Finally, the substrate is sequentially input into the coating unit, the cutting unit, the sorting unit, and the packaging unit for coating, cutting, sorting, and packaging. Through the multi-color optically variable printing method provided by the present application, on the same printed image, a multi-color optically variable technology with one or a combination of anti-counterfeiting features such as multi-dynamic optically variable splicing or interlacing visual effects, micron-level image and text fineness, and variable information can be realized. It contains variable information, and its variable effect graphics can be any graphics, text, numbers, prefix numbers, QR codes, bar codes, etc., and can be associated with other personalized feature information such as graphics, text, numbers, prefix numbers, QR codes, bar codes, etc. on the substrate.

[0007] In addition, the technical solution provided by this application may also have the following additional technical features: In some technical solutions, optionally, before the printed material is sequentially input into the coating unit, the cutting unit, the sorting unit, and the packaging unit, it also includes: inputting the printed material into an online detection unit to detect the printing quality, and verifying the accuracy of the association between the variable optically variable number and the variable crown number.

[0008] In this technical solution, before the printed material is sequentially input into the coating unit, cutting unit, sorting unit, and packaging unit, the printed material is also input into the online detection unit to detect the printing quality and verify the accuracy of the association between the variable optically variable number and the variable crown number. By associating the variable optically variable number with the variable crown number, a one-to-one verification mechanism is formed, forming a more integrated composite anti-counterfeiting means, which can greatly increase the difficulty of counterfeiting and enhance the anti-counterfeiting performance, reliability, and security.

[0009] In some technical schemes, optionally, the multi-color optically variable printing method also includes: judging whether the number list is a serial number list and supplementing the original code; when the number list is a serial number list and the original code is supplemented, generating a supplementary original code number list according to the printing quality; printing the supplementary original code according to the supplementary original code number list, and coating, cutting, embedding, sorting, and packaging to obtain the final serial number product.

[0010] In this technical solution, the multi-color optically variable printing method also includes judging whether the number list is a continuous number list and supplementing the original code. When the number list is a continuous number list and the original code is supplemented, a supplementary number list is generated according to the printing quality. Then, the supplementary original code is printed according to the supplementary original code number list, and coating, cutting, inlaying, sorting, and packaging are performed to obtain the final continuous number product, thereby realizing fast and automatic supplementary original code printing, solving the problems of high labor intensity, low production efficiency, high risk of dialing errors, and difficult product quality assurance in manual supplementary original code. It is also suitable for large-sheet printing and small-sheet printing. According to the printing volume requirements of continuous number and supplementary original code printing, one of large-sheet printing and small-sheet printing, or a combination of the two, can be flexibly selected to increase the flexibility of printing supplementary codes and simplify the process of printing supplementary codes.

[0011] In some technical schemes, optionally, supplementary original code printing is performed according to the supplementary original code number list, specifically including: inputting the substrate into the screen printing unit and printing the screen image on the substrate; inputting the substrate into the first magnetization and variable pre-curing unit, and forming a variable optically variable number on the screen image according to the supplementary original code number list; inputting the substrate into the second magnetization and pre-curing unit, and magnetizing and pre-curing the screen image; inputting the substrate into the number printing unit, and printing the variable crown number on the substrate according to the supplementary original code number list; inputting the substrate into the drying and curing unit for drying and curing; inputting the substrate into the online detection unit to detect the correlation accuracy of the printing quality, the variable optically variable number and the variable crown number.

[0012] In this technical solution, the original code supplement printing is performed according to the original code supplement number list. Specifically, the substrate is first input into the screen printing unit, and the screen image is printed on the substrate. Then the substrate is input into the first magnetization and variable pre-curing unit, and the variable optically variable number is formed on the screen image according to the original code supplement number list. The substrate is input into the second magnetization and pre-curing unit, and the screen image is magnetized and pre-cured. Then the substrate is input into the number printing unit, and the variable crown number is printed on the substrate according to the original code supplement number list. The substrate is input into the drying and curing unit for drying and curing. Finally, the substrate is input into the online detection unit to detect the correlation accuracy of the printing quality, the variable optically variable number and the variable crown number, so as to realize fast and automatic original code supplement printing, which solves the problems of high labor intensity, low production efficiency, high risk of dialing errors and difficult product quality assurance of manual original code supplement.

[0013] In some technical schemes, optionally, the substrate is input into the first magnetization and variable pre-curing unit, and a variable optically variable number is formed on the silk screen image according to the number list, including: conveying the substrate to the first magnetization and variable pre-curing unit, magnetizing and positioning the ink or varnish carrier on the substrate, and variably pre-drying and curing the magnetized part of the ink or varnish carrier according to the number list to form a variable optically variable number.

[0014] In this technical solution, the printing material is input into the first magnetization and variable pre-curing unit, and a variable optically variable number is formed on the silk screen image according to the number list. Specifically, the printing material is transported to the first magnetization and variable pre-curing unit, the ink or varnish carrier on the printing material is magnetized and positioned, and the magnetized part of the ink or varnish carrier is precisely and variably pre-dried and cured according to the number list to form a variable optically variable number.

[0015] In some technical schemes, optionally, the substrate is input into a second magnetization and pre-curing unit, the silk screen image is magnetized and fully cured to form a second optically variable image, including: conveying the substrate to the second magnetization and pre-curing unit, magnetizing and positioning the ink or varnish carrier on the substrate that has not been pre-dried and cured, and pre-drying and curing the remaining ink or varnish carrier after magnetization.

[0016] In this technical solution, the substrate is input into the second magnetization and pre-curing unit, the screen image is magnetized and fully cured to form a second optically variable image. Specifically, the substrate is transported to the second magnetization and pre-curing unit, the ink or varnish carrier on the substrate that has not been pre-dried and cured is magnetized and positioned, and the remaining ink or varnish carrier after magnetization is pre-dried and cured, thereby forming the second optically variable image.

[0017] In some technical solutions, optionally, a substrate is input into a number printing unit, and a variable crown number is printed on the substrate according to the number list, including: inputting the substrate into the number printing unit, and printing ink or varnish carrier on a sheet substrate through number printing to form a variable crown number associated with the variable optically variable number.

[0018] In this technical solution, a substrate is input into a number printing unit, and a variable crown number is printed on the substrate according to the number list. Specifically, the substrate is input into the number printing unit, and ink or varnish carrier is pressed on a sheet substrate through number printing to form a variable crown number associated with the variable optically variable number.

[0019] In some technical solutions, optionally, number printing includes mechanical number printing or electronically controlled number printing.

[0020] In this technical solution, number printing includes mechanical number printing or electronically controlled number printing.

[0021] In some technical solutions, optionally, the variable optically variable number includes one of the following or a combination thereof: graphics, text, numbers, crown numbers, QR codes, bar codes; and / or the variable crown number includes one of the following or a combination thereof: graphics, text, numbers, crown numbers, QR codes, bar codes.

[0022] In the technical solution, the variable optical code includes one of the following or a combination thereof: graphics, text, numbers, crown numbers, QR codes, and bar codes. The variable crown numbers include one of the following or a combination thereof: graphics, text, numbers, crown numbers, QR codes, and bar codes.

[0023] In some technical solutions, optionally, the multi-color optically variable printing method can realize a multi-color optically variable technology with one or a combination of anti-counterfeiting features such as multiple dynamic optically variable splicing or interlacing visual effects, micron-level image and text fineness, and variable information on the same printed image.

[0024] In this technical solution, the multi-color optically variable printing method can realize a multi-color optically variable technology with one or a combination of anti-counterfeiting features such as multiple dynamic optically variable splicing or interlacing visual effects, micron-level image and text fineness, and variable information on the same printed image.

[0025] Additional aspects and advantages of the present application will become apparent in the following description or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 This is one of the step flow charts of the multi-color optically variable printing method according to an embodiment of the present application; Figure 2 This is a second flow chart of the steps of the multi-color optically variable printing method according to an embodiment of the present application; Figure 3 This is a flowchart of the steps of the multi-color optically variable printing method according to an embodiment of the present application; Figure 4 This is a fourth step flow chart of a multi-color optically variable printing method according to an embodiment of the present application; Figure 5 This is a flowchart of the fifth step of the multi-color optically variable printing method according to an embodiment of the present application; Figure 6 This is the sixth step flow chart of the multi-color optically variable printing method according to an embodiment of the present application; Figure 7 This is the seventh step flow chart of the multi-color optically variable printing method according to an embodiment of the present application; Figure 8 This is a flowchart of the steps of the multi-color optically variable printing method according to an embodiment of the present application; Fig. 9 This is a ninth step flow chart of a multi-color optically variable printing method according to an embodiment of the present application; Fig.10This is the tenth step flow chart of the multi-color optically variable printing method according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0029] Refer to the following Figures 1 to 10 The multi-color optically variable printing method according to some embodiments of the present application is described.

[0030] like Figure 1 As shown, a multi-color optically variable printing method according to an embodiment of the present application includes: Step S102: inputting the substrate into the screen printing unit, and printing the screen image on the substrate; Step S104: input the substrate into the first magnetization and variable pre-curing unit, and form a variable optically variable number on the screen image according to the number list; Step S106: input the substrate into the second magnetization and pre-curing unit to magnetize and fully cure the screen image to form a second optically variable image; Step S108: input the substrate into the number printing unit, and print the variable prefix number on the substrate according to the number list; Step S110: inputting the substrate into a drying and curing unit for drying and curing; Step S112: input the printing material into the coating unit, cutting unit, sorting unit and packaging unit in sequence for coating, cutting, sorting and packaging.

[0031] According to the multi-color optically variable printing method provided in this embodiment, the substrate is first input into the screen printing unit, and the screen image is printed on the substrate. Then the substrate is input into the first magnetization and variable pre-curing unit, and a variable optically variable number is formed on the screen image according to the number list. The substrate is input into the second magnetization and pre-curing unit, and the screen image is magnetized and fully cured to form a second optically variable image. The substrate is input into the number printing unit, and a variable crown number is printed on the substrate according to the number list. The substrate is input into the drying and curing unit for drying and curing. Finally, the substrate is sequentially input into the coating unit, the cutting unit, the sorting unit, and the packaging unit for coating, cutting, sorting, and packaging. Through the multi-color optically variable printing method provided by this application, on the same printed image, a multi-color optically variable technology with one or a combination of anti-counterfeiting features such as multi-dynamic optically variable splicing or interlacing visual effects, micron-level image and text fineness, and variable information can be realized. It contains variable information, and its variable effect graphics can be any graphics, text, numbers, prefix numbers, QR codes, bar codes, etc., and can be associated with other personalized feature information such as graphics, text, numbers, prefix numbers, QR codes, bar codes, etc. on the substrate.

[0032] like Figure 2 As shown, according to an embodiment of the multi-color optically variable printing method proposed in the present application, before the substrate is sequentially input into the coating unit, the cutting unit, the sorting unit, and the packaging unit, the method further includes: Step S202: input the printed material into the online inspection unit to inspect the printing quality and verify the accuracy of the association between the variable optically variable number and the variable crown number.

[0033] In this embodiment, before the printed material is sequentially input into the coating unit, the cutting unit, the sorting unit, and the packaging unit, the printed material is also input into the online detection unit to detect the printing quality and verify the accuracy of the association between the variable optically variable number and the variable crown number. By associating the variable optically variable number with the variable crown number, a one-to-one verification mechanism is formed, forming a more integrated composite anti-counterfeiting means, which can greatly increase the difficulty of counterfeiting and enhance the anti-counterfeiting performance, reliability, and security.

[0034] like Figure 3 As shown, the multi-color optically variable printing method according to an embodiment of the present application further includes the following steps: S302: Determine whether the number list is a consecutive number list, and add the original code; S304: when the number sheet is a continuous number sheet and the original code is supplemented, a number sheet supplementing the original code is generated according to the printing quality; S306: Print the supplementary code according to the supplementary code number list, and then coat, cut, embed, sort and package to obtain the final serial number product.

[0035] In this embodiment, the multi-color optically variable printing method also includes judging whether the number list is a continuous number list and supplementing the original code. When the number list is a continuous number list and the original code is supplemented, a supplementary number list is generated according to the printing quality. Then, the supplementary original code is printed according to the supplementary original code number list, and coating, cutting, inlaying, sorting, and packaging are performed to obtain the final continuous number product, thereby realizing fast and automatic supplementary original code printing, solving the problems of high labor intensity, low production efficiency, high risk of dialing errors, and difficult product quality assurance in manual supplementary original code. It is also suitable for large-sheet printing and small-sheet printing. According to the printing volume requirements of continuous number and supplementary original code printing, one of large-sheet printing and small-sheet printing, or a combination of the two can be flexibly selected to increase the flexibility of printing supplementary codes and simplify the process of printing supplementary codes.

[0036] like Figure 4 As shown, according to a multi-color optically variable printing method of an embodiment proposed in the present application, the original code is printed according to the original code supplement number list, specifically comprising the following steps: S402: inputting the substrate into the screen printing unit, and printing the screen image on the substrate; S404: input the substrate into the first magnetization and variable pre-curing unit, and form a variable optically variable number on the screen image according to the original code number list; S406: inputting the substrate into the second magnetizing and pre-curing unit to magnetize and pre-curing the screen image; S408: Input the substrate into the number printing unit, and print the variable prefix number on the substrate according to the original code number list; S410: Inputting the substrate into a drying and curing unit for drying and curing; S412: The printed material is input into the online detection unit to detect the printing quality, the correlation accuracy of the variable optical variable number and the variable crown number.

[0037] In this embodiment, the substrate is first input into the screen printing unit, and the screen image is printed on the substrate. Then the substrate is input into the first magnetization and variable pre-curing unit, and a variable optically variable number is formed on the screen image according to the original code number list. The substrate is input into the second magnetization and pre-curing unit, and the screen image is magnetized and pre-cured. Then the substrate is input into the number printing unit, and a variable crown number is printed on the substrate according to the original code number list. The substrate is input into the drying and curing unit for drying and curing. Finally, the substrate is input into the online detection unit to detect the printing quality, the correlation accuracy of the variable optically variable number and the variable crown number, so as to realize fast and automatic original code supplement printing, which solves the problems of high labor intensity, low production efficiency, high risk of dialing errors and difficult product quality assurance of manual original code supplement.

[0038] like Figure 5As shown, according to an embodiment of the multi-color optically variable printing method proposed in the present application, the substrate is input into the first magnetization and variable pre-curing unit, and a variable optically variable number is formed on the screen image according to the number list, which specifically includes the following steps: S502: The printing material is conveyed to the first magnetization and variable pre-curing unit, the ink or varnish carrier on the printing material is magnetized and positioned, and the magnetized part of the ink or varnish carrier is variably pre-dried and cured according to the number list to form a variable optically variable number.

[0039] In this embodiment, the printing material is input into the first magnetization and variable pre-curing unit, and a variable optically variable number is formed on the silk screen image according to the number list. Specifically, the printing material is transported to the first magnetization and variable pre-curing unit, the ink or varnish carrier on the printing material is magnetized and positioned, and the magnetized part of the ink or varnish carrier is precisely and variably pre-dried and cured according to the number list to form the variable optically variable number.

[0040] like Figure 6 As shown, according to an embodiment of the multi-color optically variable printing method proposed in the present application, the substrate is input into the second magnetization and pre-curing unit, the screen image is magnetized and fully cured to form a second optically variable image, which specifically includes the following steps: S602: conveying the printing material to the second magnetizing and pre-curing unit, magnetizing and positioning the ink or varnish carrier on the printing material that has not been pre-dried and cured, and pre-drying and curing the remaining magnetized ink or varnish carrier.

[0041] In this embodiment, the substrate is input into the second magnetization and pre-curing unit, the silk screen image is magnetized and fully cured to form a second optically variable image. Specifically, the substrate is transported to the second magnetization and pre-curing unit, the ink or varnish carrier on the substrate that has not been pre-dried and cured is magnetized and positioned, and the remaining ink or varnish carrier after magnetization is pre-dried and cured, thereby forming the second optically variable image.

[0042] like Figure 7 As shown, according to an embodiment of the multi-color optically variable printing method proposed in the present application, a substrate is input into a number printing unit, and a variable crown number is printed on the substrate according to the number list, which specifically includes the following steps: S702: The substrate is input into the number printing unit, and the ink or varnish carrier is pressed on the sheet substrate by number printing to form a variable crown number associated with the variable optically variable number.

[0043] In this embodiment, the substrate is input into the number printing unit, and a variable crown number is printed on the substrate according to the number list. Specifically, the substrate is input into the number printing unit, and the number is printed on a sheet substrate by embossing ink or varnish carrier to form a variable crown number associated with the variable optically variable number.

[0044] In some embodiments, optionally, the first magnetization and variable pre-curing unit comprises a first magnetization roller and a pre-drying and curing device, the first magnetization roller and the pre-drying and curing device are arranged opposite to each other. The pre-drying and curing device comprises an optical mask unit, and the optical mask unit is used to emit a variable light field.

[0045] In some embodiments, optionally, the second magnetization and pre-curing unit includes a second magnetization roller and a pre-drying and curing mechanism, and the second magnetization roller and the pre-drying and curing mechanism are arranged opposite to each other.

[0046] In some embodiments, optionally, the number printing includes mechanical number printing or electronically controlled number printing.

[0047] In some embodiments, optionally, the variable optical code includes one of the following or a combination thereof: graphics, text, numbers, crown numbers, QR codes, bar codes.

[0048] In some embodiments, optionally, the variable serial number includes one of the following or a combination thereof: graphics, text, numbers, serial numbers, QR codes, bar codes.

[0049] In some embodiments, optionally, the multi-color optically variable printing method can realize a multi-color optically variable technology with one or a combination of anti-counterfeiting features such as multiple dynamic optically variable splicing or interlacing visual effects, micron-level image and text fineness, and variable information on the same printed image.

[0050] like Figures 8 to 10 As shown, according to a specific embodiment of the multi-color optically variable printing method proposed in the present application, it includes serial number printing and original code supplement printing. Generally, the number printing is serial number printing; if there is a number printing error or other quality problems and some numbers need to be supplemented, the original code needs to be supplemented, such as Figure 8 As shown, the specific implementation method is as follows: S1102: printing screen graphics on a substrate; S1104: forming a variable optical variable number on the screen graphics according to the serial number or the original code supplement number list; S1106: printing a variable crown number on the substrate according to the same serial number or the original code supplement number list; S1108: testing the printing quality, the correlation accuracy of the variable optical variable number and the variable crown number through online testing. Or the operations are performed in the order of S1106, S1102, S1104, and S1108.

[0051] like Fig. 9As shown, taking the large-scale printing of dual color optically variable sheets as an example, specifically, S1202: input the substrate into the screen printing unit to print the screen image on the substrate; S1204: input the substrate into the first magnetization and variable pre-curing unit to form a variable optically variable number on the screen-printed image according to the serial number list; S1206: input the substrate into the second magnetization and pre-curing unit to magnetize and pre-curing the remaining screen-printed images; S1208: input the substrate into the number printing unit to print the screen-printed images on the substrate according to the same serial number list Print variable prefix numbers on the substrate; S1210: Input the substrate into the drying and curing unit; S1212: Input the substrate into the online detection unit to detect the accuracy of the correlation between the printing quality, the variable optical variable number and the variable prefix number; S1214: Input the substrate into the subsequent processes such as coating, cutting, sorting, packaging, etc., and generate a supplementary code number list according to the product quality; S1216: According to the supplementary code number list, repeat S1202 to S1212 to perform supplementary code printing, coating, cutting, ticket embedding, sorting, packaging, and produce the final serial number product. Or follow the order of S1208, S1202, S1204, S1206, S1210, S1212, S1214, S1216.

[0052] Combined with large sheet printing equipment 1 to equipment 5: 1. Equipment 1 can realize the printing of serial numbers and original code supplement of variable optical variable numbers and variable crown numbers.

[0053] 2. Equipment 2 can realize the printing of consecutive numbers of variable optically variable numbers and variable crown numbers, and the printing of the original code complement of variable optically variable numbers.

[0054] 3. Equipment 3 can realize the printing of consecutive numbers and the printing of supplementary original numbers of variable optical numbers.

[0055] 4. Equipment 4 can realize the printing of serial numbers and the printing of supplementary original codes of variable prefix numbers.

[0056] 5. Equipment 5 can realize the printing of variable serial numbers.

[0057] There are many printing methods for implementing this embodiment in combination with the above-mentioned device, and typical methods (not limited to the following ones) are described in detail as follows: Method 1: 1. Device 1 implements the serial number printing of variable optically variable numbers and variable prefix numbers S1202 to S1212.

[0058] 2. Device 1 implements the printing of the original complementary code of the variable optically variable number and the variable prefix number S1202 to S1212.

[0059] Method 2: 1. Device 2 realizes the serial number printing of variable optically variable numbers and variable prefix numbers S1202 to S1212.

[0060] 2. Device 2 realizes the printing of the complementary original code of the variable optical number S1202 to S1206, S1210 to S1212.

[0061] 3. Device 4 implements the printing of the original complement code of the variable prefix number from S1208 to S1212.

[0062] Or print in the order of 1, 3, 2.

[0063] Method 3: 1. Device 3 realizes the printing of variable optical serial numbers S1202 to S1206, S1210 to S1212.

[0064] 2. Device 4 implements the printing of the variable prefix number from S1208 to S1212.

[0065] 3. The device 3 realizes the printing of the original code complement of the variable optical number S1202 to S1206, S1210 to S1212.

[0066] 4. Device 4 implements the printing of the original complement code of the variable prefix number from S1208 to S1212.

[0067] Or print in the order of 1, 2, 4, 3; 2, 1, 3, 4; 2, 1, 4, 3; 1, 3, 2, 4; 2, 4, 1, 3, etc. This method can have multiple printing orders, ensuring that the consecutive numbers are printed first and then the original codes are printed.

[0068] Method 4: 1. Device 3 realizes the printing of variable optical serial numbers S1202 to S1206, S1210 to S1212.

[0069] 2. Device 5 realizes the serial number printing of variable prefix numbers S1208 to S1212.

[0070] 3. The device 3 realizes the printing of the original code complement of the variable optical number S1202 to S1206, S1210 to S1212.

[0071] 4. Device 4 implements the printing of the original complement code of the variable prefix number from S1208 to S1212.

[0072] Or print in the order of 1, 2, 4, 3; 2, 1, 3, 4; 2, 1, 4, 3; 1, 3, 2, 4; 2, 4, 1, 3, etc. This method can have multiple printing orders, ensuring that the consecutive numbers are printed first and then the original codes are printed.

[0073] like Fig.10As shown, taking the small-sheet printing of dual-color optically variable inks as an example, the printing method omits the cutting steps in S1214 and S1216 of the large-sheet printing process, and is modified to S1302, inputting the substrate into subsequent processes such as coating, sorting, and packaging, and generating a re-original code number list based on product quality; S1304, according to the re-original code number list, repeating S1202 to S1212 to perform re-original code printing, coating, inlaying, sorting, and packaging to produce the final serial number product. The rest of the process is similar to the large-sheet printing process and will not be repeated here.

[0074] In summary, the beneficial effects of the embodiments of the present application are: 1. Compared with a single anti-counterfeiting feature, the multi-color and multi-changeable technology with variable information is associated with other personalized feature information such as graphics, text, numbers, serial numbers, QR codes, bar codes, etc. on the printed material to form a one-to-one verification mechanism, forming a more integrated composite anti-counterfeiting means, which can greatly increase the difficulty of counterfeiting and enhance the anti-counterfeiting performance, reliability and security.

[0075] 2. In addition to normal serial number printing, it can also realize fast and automatic original code printing, which meets the public's demand for collecting and appreciating "serial number" securities, and solves the problems of high labor intensity, low production efficiency, high risk of dialing errors and difficult product quality assurance in manual original code printing.

[0076] 3. It is suitable for both large and small printing. According to the printing volume requirements of serial number and original code printing, you can flexibly choose one of large and small printing, or a combination of the two, to increase the flexibility of printing and supplementing codes and simplify the process of printing and supplementing codes.

[0077] In this application, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0078] In the description of the present application, it is necessary to understand that the terms "upper", "lower", "front", "rear", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present application.

[0079] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0080] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-color optically variable printing method, characterized in that: include: Inputting a substrate into a screen printing unit and printing a screen image on the substrate; The substrate is input into a first magnetization and variable pre-curing unit, and variable optical numbers are formed on the screen image according to the number list; The substrate is input into a second magnetizing and pre-curing unit to magnetize and fully cure the screen image to form a second optically variable image; Input the substrate into the number printing unit, and print a variable crown number on the substrate according to the number list; Inputting the substrate into a drying and curing unit for drying and curing; The substrate is sequentially input into a coating unit, a cutting unit, a sorting unit and a packaging unit for coating, cutting, sorting and packaging.

2. The multi-color optically variable printing method according to claim 1, characterized in that: Before the substrate is sequentially input into the coating unit, the cutting unit, the sorting unit, and the packaging unit, the method further comprises: The printing material is input into an online detection unit to detect the printing quality and verify the accuracy of the association between the variable optically variable number and the variable crown number.

3. The multi-color optically variable printing method according to claim 2, characterized in that: Also includes: Determine whether the number list is a consecutive number list, and fill in the original code; When the number sheet is a continuous number sheet and the original code is supplemented, a number sheet supplementing the original code is generated according to the printing quality; The original code is printed according to the original code number list, and then coated, cut, embed, sort and packaged to obtain the final serial number product.

4. The multi-color optically variable printing method according to claim 3, characterized in that: The printing of the supplementary original code according to the supplementary original code number list specifically includes: Inputting the substrate into a screen printing unit, and printing a screen image on the substrate; The substrate is input into a first magnetization and variable pre-curing unit, and a variable optically variable number is formed on the screen image according to the original code number list; The substrate is input into a second magnetizing and pre-curing unit to magnetize and pre-curing the screen image; The substrate is input into a number printing unit, and a variable crown number is printed on the substrate according to the original code number list; Inputting the substrate into a drying and curing unit for drying and curing; The printing material is input into an online detection unit to detect the printing quality, the correlation accuracy of the variable optically variable number and the variable crown number.

5. The multi-color optically variable printing method according to claim 1, characterized in that: The step of inputting the substrate into the first magnetization and variable pre-curing unit and forming a variable optically variable number on the screen image according to the number list comprises: The printing material is conveyed to the first magnetization and variable pre-curing unit, the ink or varnish carrier on the printing material is magnetized and positioned, and the magnetized part of the ink or varnish carrier is variably pre-dried and cured according to the number list to form a variable optically variable number.

6. The multi-color optically variable printing method according to claim 5, characterized in that: The step of inputting the substrate into a second magnetizing and pre-curing unit, magnetizing and fully curing the screen image, and forming a second optically variable image includes: The printing material is conveyed to a second magnetization and pre-curing unit, the ink or varnish carrier on the printing material that has not been pre-dried and cured is magnetized and positioned, and the remaining magnetized ink or varnish carrier is pre-dried and cured.

7. The multi-color optically variable printing method according to claim 6, characterized in that: The step of inputting the substrate into a number printing unit and printing a variable crown number on the substrate according to the number list comprises: The substrate is input into a number printing unit, and the number is printed on a sheet substrate with an ink or varnish carrier to form a variable crown number associated with the variable optically variable number.

8. The multi-color optically variable printing method according to claim 7, characterized in that: The number printing includes mechanical number printing or electronically controlled number printing.

9. The multi-color optically variable printing method according to any one of claims 1 to 8, characterized in that: The variable optical code includes one of the following or a combination thereof: graphics, text, numbers, crown numbers, QR codes, bar codes; and / or The variable prefix number includes one of the following or a combination thereof: graphics, text, numbers, prefix numbers, QR codes, and bar codes.

10. The multi-color optically variable printing method according to any one of claims 1 to 8, characterized in that: The multi-color optically variable printing method can realize a multi-color optically variable technology with one or a combination of anti-counterfeiting features such as multiple dynamic optically variable splicing or interlacing visual effects, micron-level image and text fineness, and variable information on the same printed image and text.

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