Grating anti-counterfeiting technology based on fractal

Abstract

The invention belongs to the field of anti-counterfeiting technologies, and particularly relates to a grating anti-counterfeiting method based on fractal. The method can be directly achieved in normal printing modes such as offset litho printing, flexographic printing, intaglio printing, silk-screen printing and digital printing, and can be used for the surface of any printing stock such as paper, paper boards, plastic film and tinplates. The anti-counterfeiting method is finished in image-text design before printing, no cost is added, and the method is simple, easy to conduct, practical, wide in application range, and capable of being used for surface decoration anti-counterfeiting of packaging products, anti-counterfeiting of negotiable securities, anti-counterfeiting of print and anti-counterfeiting of simulated artwork copies. The method relates to three layers of anti-counterfeiting recognition structures, namely the appearance recognition structure, the linear moire pattern recognition structure and the halftone moire pattern anti-counterfeiting recognition structure. Through the three anti-counterfeiting recognition structures, the anti-counterfeiting capability grade is increased, the method is suitable for recognition of people of different levels, and is wide in application range. The method has high update capacity, and the timely anti-counterfeiting effect can be achieved only by replacing parameters regularly.

Description

technical field [0001] The invention belongs to the technical field of product anti-counterfeiting, and in particular relates to a fractal-based grating anti-counterfeiting technology. Background technique [0002] With the development of modern technology and popularization of technology, counterfeiter manufacturers are becoming more and more specialized, grouped, systematic and networked, and mass-produce counterfeit and shoddy products. With the trend of false goods, fake goods and fake goods running rampant all over the world, it has posed a serious threat to the normal production of enterprises. Fake cigarettes, fake alcohol, fake medicines, fake food, fake electrical appliances, fake cosmetics, fake chemical fertilizers, etc., make the vast number of consumers who have suffered from it want to cry without tears. According to relevant statistics, the value of counterfeit goods in the world is as high as 500 billion euros every year, which is equivalent to 7% of the tot...

AI Technical Summary

Problems solved by technology

[0004] The existing technology has proposed the method of using the moiré principle to add hidden information in the image and identify it, but there are the following deficiencies: because the hidden information added in the image by using the moiré principle has good concealment, consumption The reader cannot be identified through the senses, and must be identified with the help of a grating sheet corresponding to the added hidden information; for linear moiré patterns, most of the selected hidden information is text, symbols, graphics, and LOGO, etc., designed anti-counterfeiting element printing In terms of products, the concealment is not good, and it is easy to be cracked and imitated; because the concealment of the hidden information added to the image by using the moiré principle is very good, so it is necessary to constantly adjust the angle of the corresponding grating sheet during recognition to achieve The hidden information will be shown to the best effect, which requires a certain amount of professional knowledge to distinguish the true from the false, which will bring inconvenience to ordinary consumers; consumers need to use gratings when identifying, so each packaged product must be Adding specific lenticular sheets adds cost

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