Buffer type magnetochromic anti-counterfeiting ink composition and identification device thereof

Abstract

The invention discloses a buffer type magnetochromic anti-counterfeiting ink composition and an identification device thereof. The buffer type magnetochromic anti-counterfeiting ink composition comprises a magnetocaloric material, a thermochromic material and a binder and additives commonly used in the field of printing ink. According to an anti-counterfeiting component prepared by using the anti-counterfeiting ink composition of the invention, heat energy of a magnetocaloric material is used as excitation energy of a temperature changing material to achieve conversion of heat energy detectionto visual color change, thereby greatly improving the visual identification performance of the anti-counterfeiting feature. At the same time, buffered color change identification of the anti-counterfeiting feature of the temperature changing material under the magnetic field is achieved, magnetocaloric and temperature changing detection for identification and buffered composite detection for identification are achieved by the identification device of the invention, and the anti-counterfeiting level is improved by the composite application.

Description

technical field [0001] The invention relates to an anti-counterfeit ink and an identification device thereof. technical background [0002] Certificates, tickets, securities, banknotes, etc. must be prevented from being forged, and labels used for brand protection must also be prevented from being costly. Therefore, security documents need to introduce anti-counterfeiting features, which can be used to verify the authenticity of securities documents. It also serves the purpose of reducing or preventing counterfeiting. Anti-counterfeiting ink and printing technology occupy a very important position. The research and application of the application of the two plays an irreplaceable role in the field of anti-counterfeiting, and its application is the most common. [0003] The highest goal pursued by anti-counterfeiting technology is to be easy for users to identify and difficult for counterfeiters to forge. Only this kind of technology can become a very practical technology in...

AI Technical Summary

Problems solved by technology

[0006] EP1548657A1 patent discloses a security document with magnetochromic anti-counterfeiting effect and its identification method. The magnetochromic anti-counterfeiting effect is realized by the color change of the temperature-sensitive liquid crystal material caused by the temperature change of the temperature-changing material in the magnetic field to achieve anti-counterfeiting effect, it is mentioned that the magnetochromic material and temperature-sensitive liquid crystal material can be added to inks suitable for engraving gravure printing, offset printing, screen printing, flexo printing, inkjet and gravure or other printing methods, and the identification mechanism is carried out expression, but does not refer to the identification device

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