Printed matter with gravure latent image and preparation method thereof

Abstract

The invention relates to a gravure printing latent image print product and a method for manufacturing the same. The method comprises: making a substrate pattern by using offset printing, wherein the substrate pattern is a line pattern formed by repeatedly arranging a group of lines of three continuous primary colors or three colors of different color systems; dividing a latent image pattern in to a plurality of patterns with different color ranges formed by lines corresponding to the substrate pattern, wherein the lines of the latent image pattern are parallel with one another; moving lines of part of patterns with different color ranges forming the latent image pattern a certain distance relative to the line of the other patterns with different color ranges along a width direction of the lines to make the latent image pattern into a gravure printing plate; carrying out air pressure overprinting of the gravure printing plate and the substrate pattern part of an offset printer to overlap the colors of the talent image pattern and the substrate pattern, wherein the gravure printing latent image pattern of various and changeable colors can observed in spite of the blockage of concave lines; and forming a different latent image pattern vertical to the lines of the former latent image patter on the substrate pattern and obtaining the gravure printing latent image pattern which has various and changeable colors and can deform.

Description

technical field [0001] The invention relates to a printed matter with a gravure latent image and a production method thereof. Background technique [0002] In the prior art, the engraving gravure printing method is used to form clear raised lines on the surface of the printed matter, which has a strong sense of concavo-convexity and is easy to identify. It is widely used in banknotes and securities as an effective anti-counterfeiting method. In order to further improve the anti-counterfeiting effect, in the complex gravure pattern, there are invisible patterns or characters hidden. Using the high and low light resistance of the raised lines, clear invisible patterns can be seen along the light, which is referred to as invisible or latent in the industry. film. The traditional gravure latent image is a single invisible form of expression. During the production process, the raised lines that constitute a single invisible and the raised lines that constitute a gravure pattern ...

AI Technical Summary

Problems solved by technology

However, with the widespread application of invisible anti-counterfeiting technology at present, more gravure latent image production methods that are easy to identify, complex to produce, difficult to counterfeit, and have better anti-counterfeiting effects are needed.

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