Anti-counterfeiting printing method by using invisible two-dimensional codes

Abstract

The invention relates to an anti-counterfeiting printing method by using invisible two-dimensional codes. The anti-counterfeiting printing method is characterized in that at least four printing layers for printing are adopted, and comprises the following steps of: firstly, providing a digital serial number and splitting the serial number into three fields of which information is assigned to three groups of two-dimensional codes; secondly, printing one group of two-dimensional codes on a first layer by using aqueous ink black materials; thirdly, overprinting a grey isolating layer on the first two-dimensional code layer by using infrared non-absorbent materials to form a second layer; fourthly, overprinting a second group of two-dimensional codes on the second layer of the grey isolating layer by using the infrared non-absorbent materials to form a third layer; and finally, overprinting a third group of two-dimensional codes on the third two-dimensional code layer by using ultraviolet absorption materials to form a fourth layer. The method has the advantages of eliminating the possibility of imitation by scanning the two-dimensional codes and achieving relatively higher use value because the overprinting is performed in the same area in an offset printing and digital jet printing way and the upper printing layer covers the lower layer naturally.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting printing, in particular to a method for anti-counterfeiting printing of invisible two-dimensional codes. Background technique [0002] Anti-counterfeiting printing has always been an important anti-counterfeiting measure and the focus of anti-counterfeiting methods. It is also a long-term task for domestic finance, taxation and other related departments. In the past, anti-counterfeiting measures were mainly aimed at paper, ink, printing color, etc. Watermarking has been adopted Paper, fluorescent ink, colorless fluorescent ink, color-changing ink, multi-color overprinting and other methods have been used in ticket anti-counterfeiting printing, and some results have been achieved. However, due to the high cost of use and the difficulty of being directly identified by consumers, the use of the above measures is limited. A certain limit is imposed, and the actual effect is not good. Moreover, no m...

AI Technical Summary

Problems solved by technology

[0002] Anti-counterfeiting printing has always been an important anti-counterfeiting measure and the focus of anti-counterfeiting methods. It is also a long-term task for domestic finance, taxation and other related departments. In the past, anti-counterfeiting measures were mainly aimed at paper, ink, printing color, etc. Watermarking has been adopted Paper, fluorescent ink, co

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