Printing method of 3D magnetic hidden carving light-change reverse-phase pattern

Abstract

The invention discloses a printing method of a 3D magnetic hidden carving light-change reverse-phase pattern. The hidden carving light-change reverse-phase pattern refers to a pattern in which two ormore light-change angle phases can be displayed under the same printed layer, that is, the pattern of a same ink layer is divided into two or more parts happening desynchronous color sequence change effects, an observer can see that the first part of the pattern changes from a color A to a color B and the second part of the pattern changes from the color B to the color A along with changes of a viewing angle. The pattern with three or more parts can also generate desynchronous color changes along with the changes of the viewing angle. Yin and yang color changing or yin and yang text hiding isa special effect of hidden carving, that is, the pattern of the same ink layer is divided into two or more parts, the viewing angle is adjusted, then the special visual effect that the other part is darkest when one part is brightest is achieved, and the effect that the brightness of the two parts is moderate, the color is almost the same, and the two parts are integrated into a whole can be achieved. According to the printing method, the magnetic control technology is used, specific magnetic orientation of the magnetic ink local patterns is achieved, and stepwise photocuring is carried out incooperation with a digital imaging device to finally form a complete pattern through curing. The hidden carving light-change reverse-phase pattern can effectively hide an information layer into a coating, and has strong anti-counterfeiting and decorative properties.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting technology, in particular to a printing method of a 3D magnetic hidden engraving light-changing reverse pattern. Background technique [0002] All kinds of anti-counterfeiting products play an important role in every corner of the world; scientific research institutes and enterprises at home and abroad all require modern anti-counterfeiting technology to be "easy to identify and difficult to forge". Products with low manufacturing process are easy to be imitated. As time goes by, a large number of anti-counterfeiting technologies such as fluorescent anti-counterfeiting, temperature-changing anti-counterfeiting, and holographic patterns with relatively simple structures gradually lose their anti-counterfeiting effects and begin to withdraw from the anti-counterfeiting market. [0003] In 2006, Xibai Holdings Co., Ltd. disclosed the patent number (200480018382.5) of "Method and Device for Inducing...

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Problems solved by technology

[0003] In 2006, Xibai Holdings Co., Ltd. disclosed the patent number (200480018382.5) of "Method and Device for Inducing Patterns in Coatings Containing Magnetic Particles by Magnetic Field Action". method, to a certain extent, has played a positive anti-counterfeiting role; but the defect of this method is that each area of ​​the pattern is controlled by the magnetic field generated by the same magnetic circuit board, and is cured at one time, while the magnetic fragment pigment at the critical point of each area is subject to multiple Influenced by the magnetic lines of force in different directions, the arrangement angle of the magnetic fragments and pigments at the critical point is not easy to control, causing the critical point to be blurred and unclear, and it is impossible to form a high-precision anti-counterfeiting pattern.

This invention is only the prototype of the application of magnetic flake pigments. It only considers the magnetic detection and anti-counterfeiting of magnetic pigments, and does not consider that the pigments can be oriented in a magnetic field to form anti-counterfeiting patterns.

[0005] 2011 Zhen Jian "A Method and Device for Preparing Anti-counterfeit Patterns Symmetrically Changed with Viewing Angle" CN201110039991.0 Although it proposes the case of shading and setting, it is not fixed on the magnetic field, which will cause the light change to be not sharp enough, and the use of secondary The light source is cured, the consistency of the pattern cannot be guaranteed, and there is no introduction of digital imaging, which greatly reduces the anti-counterfeiting protection of the product

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