Technique of applying temperature-sensing discolored ink in noble metal coin (badge)

Abstract

The invention disclose a process used for the application of temperature-sensing color-changing ink on noble metal coin (seal); the process is characterized in that temperature-sensing color-changing ink as well as the metal ink is disposed on an imprinted noble metal coin (seal) blank by superposed color-printing, secondarily color-printed, solidified and plastic-sealed in vacuum, thus realizing the color changes of patterns under different temperatures; the detailed process comprises the steps as follows: preparing film, preparing photosensitive plate, matching ink, secondary color-printing, solidifying and plastic-sealing in vacuum. The process further enlarges the application field of the temperature-sensing color-changing ink on anti-counterfeiting products, especially on the manufacture process of the metal coin; compared with the prior art, the process increases the anti-counterfeiting performance of the product, enriches the artistic expression of the coin (seal) and improves the ornament and collection value of the products.

Description

technical field [0001] The invention relates to the technical field of coin manufacturing, in particular to a process for applying temperature-sensitive color-changing ink on precious metal coins (chapters). Background technique [0002] In order to improve the anti-counterfeiting performance of products, temperature-sensitive color-changing inks are used to print on trademarks, product packaging, tickets and other products or anti-counterfeiting marks to increase the anti-counterfeiting performance of products. The structure changes, it can change from "colored-colorless" or "colorless-colored" state, so as to realize the color change. The current thermochromic ink printing process uses thermochromic ink and existing color printing technology to overprint thermochromic ink on products that need anti-counterfeiting, so as to realize the color change of patterns at different temperatures to achieve an anti-counterfeiting effect. Since the existing color printing process can ...

AI Technical Summary

Problems solved by technology

Since the existing color printing process can only be applied to printing anti-counterfeiting trademarks or anti-counterfeiting marks, there are certain limitations, and it cannot be directly printed on metal products

After searching domestic and foreign patent databases, the disclosed domestic and foreign patents all have technology proposals involving temperature-sensitive or heat-sensitive color-changing inks. Among them, most of the Chinese patents involve the preparation technology of temperature-sensitive inks and their trademarks. , product packaging, tickets and other anti-counterfeiting printing application processes, but these related patents do not involve the application of thermochromic inks in metal coin manufacturing processes

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