Anti-fake method for displaying hidden red, green and yellow graphics and text information on red printing substrate

Abstract

Anti-fake graphics and text information is printed on a substrate with a red surface through red and yellow functional printing ink. The color of the red functional printing ink is consistent with the red ground color of the substrate under the illumination of sunlight or white light, and the color of the yellow functional printing ink is light yellow. The light with the central wavelengths being 515 nm (bright green), 525 nm (bright green), 530 nm (bright green), 545 nm (bright yellow), 555 nm (bright yellow), 600 nm (orange), 610 nm (orange), 615 nm (orange), 620 nm (red), 620 nm (red), 635 nm (red), 655 nm (red) and 660 nm (red) is emitted under the illumination of blue light of a mobile phone screen or monochromatic light or compound light with the wavelength ranging from 400 nm to 500 nm according to species varieties of red pigment and yellow pigment. The ordinary red pigment is used for the surface of the substrate and does not change obviously under the illumination of blue light with the corresponding wavelength. The anti-fake graphics and text information is completely or partially invisible under the white light, and the anti-fake graphics and text information emits bright green or bright yellow or bright red visible light under the illumination of the blue light of the mobile phone screen or the light with the wavelength ranging from 400 nm to 500 nm.

Description

technical field [0001] The invention relates to an anti-counterfeiting method for displaying and hiding red, green and yellow graphic information on a red printing base material, in particular to an anti-counterfeiting method that can be identified by mobile phones through the synergistic effect of red and yellow functional inks and red printing base material, and belongs to anti-counterfeiting materials and technical fields. Background technique [0002] UV fluorescent ink refers to the ink that under the irradiation of ultraviolet light, usually the wavelength of ultraviolet light is 254nm or 365nm, the cured printing ink layer emits red, green, yellow fluorescent ink, stop the ultraviolet light irradiation, and the fluorescence disappears. Infrared fluorescent ink refers to the ink that the printed ink layer emits green or other visible colors under the irradiation of infrared light, the commonly used infrared light wavelength is 980nm. Luminous ink refers to the ink tha...

AI Technical Summary

Problems solved by technology

Luminous ink does not require special equipment for identification, but the anti-counterfeiting ability is weak

In addition, the anti-counterfeiting industry is an industry with a height of one foot and a height of one foot. After a new anti-counterfeiting technology is applied for a period of time, counterfeit anti-counterfeiting inks and related products will gradually appear, and the novelty and anti-counterfeiting capabilities will gradually weaken. UV fluorescent inks Or infrared fluorescent ink or dual-band fluorescent ink has been used for more than 10 years at home and abroad, and lacks the novelty features necessary for the anti-counterfeiting industry

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