A double-code overlapping double-complementation identification two-dimensional code anti-counterfeiting method

Abstract

The invention discloses a double-code overlapping double-complementation identification two-dimensional code anti-counterfeiting method. According to the anti-counterfeiting method, two two-dimensional code images are complementarily divided into two parts; according to the size of a second part of image obtained after segmentation of each two-dimensional code image, obtaining a second image; generating two pseudo code images according to the size and the shape; generating two pseudo-two-dimensional code images from the two pseudo-code images and the first part of image after the two two-dimensional code images are segmented; printing a second part of image after segmentation of each two-dimensional code image on two key sheets respectively; printing the two pseudo two-dimensional code images on a two-dimensional code image area of a printed product in an overlapping manner by using two kinds of homochromatic and heterochromatic color matching ink; The first pseudo two-dimensional codeimage is shown on the two-dimensional code image area of the printed matter under visible light, the second pseudo two-dimensional code image is shown on the two-dimensional code image area of the printed matter under infrared light, information of the two two-dimensional code images can be obtained by utilizing the images on the two key sheets, and the method can be used for identifying whetherthe printed matter has the counterfeit infringement problem or not.

Description

Technical field: [0001] The invention relates to an anti-counterfeiting printing method, in particular to an anti-counterfeiting method of a two-dimension code overlapping double complementary identification two-dimensional code, which can be used for anti-counterfeiting of various printed products. Background technique: [0002] At present, the more common anti-counterfeiting methods are as follows: The first is the laser anti-counterfeiting mark, which uses the laser invisible ink fluorescent ink printing technology to print the product's logo or special identification pattern into the product's anti-counterfeiting label, and the same The same type of label is used for the same type of products, because the anti-counterfeiting labels are easier to forge, and the forged anti-counterfeiting labels are used on counterfeit products, causing confusion between the authenticity of the product, and therefore it is difficult to effectively prevent counterfeiting. The second is the passw...

AI Technical Summary

Problems solved by technology

[0002] At present, the more common anti-counterfeiting methods are as follows: The first is laser anti-counterfeiting marks, which use laser recessive ink fluorescent ink printing technology to print product logos or special identification patterns into product anti-counterfeiting labels, and the same Similar products use the same label, because the anti-counterfeiting label is easy to forge, and the fake anti-counterfeiting label is used on the counterfeit product, causing the product to be confused, so it is difficult to effectively prevent counterfeiting

The second is the password anti-counterfeiting label. The method adopted is to compile a set of numbers for each product, and the codes of each product are different. The numbers are printed on the labels and covered, and the numbers are stored Into the computer database that can be inquired by consumers. When consumers purchase products, they input the numbers on the logo into the computer database for comparison and identification through telephone or networked computers. The same is true, and the difference is false. Simple, easy to identify, not easy to forge, but in actual use, because the coded data is uniformly generated by the computer and printed on the label

The fourth is metamerism ink anti-counterfeiting, metamerism ink anti-counterfeiting is an anti-counterfeiting printing technology based on the phenomenon of metamerism, that is, using two substances to present the same color under one light source, but under another light source. The phenomenon of showing different colors realizes anti-counterfeiting, but the ratio of metamerism is easier to measure, so the anti-counterfeiting effect is difficult to guarantee

[0003] In summary, the existing anti-counterfeiting methods have certain shortcomings, and thus cannot fundamentally prevent counterfeit products.

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