Anti-counterfeit method for infrared stealth complementary identification two-dimensional code

Abstract

A method for anti-counterfeit of two-dimensional code by infrared stealth complementary identification A method for anti-counterfeit prin features that a two-dimensional code image compose of two-dimensional code anti-counterfeit information is complementarily divided into two parts, A first portion of the image is printed on one side of a two-dimensional code image area on a printed matter usingordinary ink, A second portion of the image is printed on the other side of the two-dimensional code image area on the printed matter using metachromatic matching ink, the two-dimensional code image area on the printed matter under visible light can only show the blank area outline of the first part image and the second part image, Only in infrared light can a complete two-dimensional code image composed of the first part of the image and the second part of the image complement each other. This method can be used to identify whether there is counterfeit infringement in labels, bills, securities and other printed matter.

Description

Technical Field: [0001] The invention relates to an anti-counterfeiting printing technology, in particular to an anti-counterfeiting method of an infrared invisible 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 kind of labels are used for products of this kind, because anti-counterfeiting labels are easier to forge, and forged anti-counterfeiting labels are used on counterfeit products, causing confusion between the authenticity of the product and making it difficult to effectively prevent counterfeiting. The second is the password anti-counterfeiting label. ...

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.

[0004] In summary, the existing anti-counterfeiting methods have certain shortcomings, and thus cannot fundamentally prevent counterfeit products.

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