Phase optical variable anti-counterfeiting element

Abstract

The invention firstly provides a phase optical variable anti-counterfeiting element which at least comprises a magnetic optical variable pigment layer and a dark background layer; the connecting material of the printing ink of the magnetic optical variable pigment layer is ultraviolet light cured resin, the magnetic optical variable pigment can be arranged in a plurality of phase angles under the interaction of a plurality of magnetic positioning devices and one or more shading plates, a light and shade alternate effect is formed under the action of light, and after the angle is changed, the original bright part becomes dark, and the dim part has a bright phase change effect. The dark background layer can also be combined with infrared, magnetic, fluorescent, hidden information and other two-line machine-readable anti-counterfeiting features to form a phase optical variable anti-counterfeiting element which can meet the requirements of the public for easy recognition and can also be compounded with difficult-to-counterfeit multi-stage anti-counterfeiting elements.

Description

technical field [0001] The invention relates to anti-counterfeiting technology, in particular to an anti-counterfeiting element with light-changing pattern of light and dark phases and a manufacturing method thereof. Background technique [0002] Due to the continuous popularization of modern color printers, copiers and imaging systems and the continuous improvement of various printing technologies, the analysis accuracy and color effects have been continuously improved, resulting in an increasing number of counterfeit valuables that are difficult to distinguish between true and false. For the purpose of preventing counterfeiting and counterfeiting, valuable items such as certificates, securities and brand-name products are often equipped with optical anti-counterfeiting elements, so that the authenticity of the valuable items can be verified through anti-counterfeiting elements, while preventing unauthorized copy. [0003] At present, in the field of anti-counterfeiting te...

AI Technical Summary

Problems solved by technology

[0004] With the continuous development and marketization of optical variable technology, the means of counterfeiting are gradually improved, making it easier for optical variable elements to be imitated. It is difficult to effectively prevent counterfeiters from using the printing method of simply using the characteristics of optical variable pigments. The duplication of this printing process reduces its anti-counterfeiting performance, making it impossible for the public to recognize the authenticity of its marked items, and brings economic losses to merchants who produce and sell real items

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