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Anti-counterfeiting element with light variation security pattern

An anti-counterfeiting element and optical-variable anti-counterfeiting technology, which can be applied to patterns characterized by light projection effects, special patterns, and printing of special varieties of printed matter, which can solve the problems of insufficient optical-variable effects, unfavorable general public, and large viewing angles.

Active Publication Date: 2013-04-17
CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] To sum up, using the surface undulation structure of gravure printing lines, through exquisite line arrangement, and matching the background pattern, there have been some applications to produce non-rainbow-like light-changing features, but from the perspective of the light-changing effect of components, it is generally The problem is that the light change effect is not obvious enough, and requires a large viewing angle. These factors are not conducive to the rapid and accurate judgment of the general public.

Method used

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  • Anti-counterfeiting element with light variation security pattern
  • Anti-counterfeiting element with light variation security pattern
  • Anti-counterfeiting element with light variation security pattern

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Use the offset printing fluorescent ink O to print the background shading (ie, the offset printing layer), and use the engraved gravure printing fluorescent ink P of the same color as the offset printing fluorescent ink to print the raised lines (ie, the gravure lines). The fluorescent materials in the offset fluorescent ink O and the engraved gravure fluorescent ink P emit different colors of visible light under the excitation of ultraviolet light. The cross-sectional view of the optically variable anti-counterfeiting pattern with the surface relief structure in the anti-counterfeiting element of this embodiment is as follows figure 1 As shown in the figure, W B = 100μm, W A = 100 μm, H A = 80 μm. When viewed under natural light, the light-changing anti-counterfeiting pattern appears as an overall pattern of the same color. When viewed at a vertical angle under a UV lamp, the imprints (offset printing layer and gravure printing lines) printed with different fluores...

Embodiment 2

[0070] The background shading is printed with offset fluorescent ink O, and the gravure lines are printed with engraved gravure fluorescent ink Q which is different in color from the offset printing ink, wherein the fluorescent materials in offset fluorescent ink O and engraved gravure fluorescent ink Q emit under the excitation of ultraviolet light visible light of different colors. The cross-sectional view of the optically variable anti-counterfeiting pattern with a surface relief structure in the anti-counterfeiting element of this embodiment is as follows figure 1 As shown in the figure, W B = 80μm, W A = 80 μm, H A = 70 μm. The light-changing anti-counterfeiting pattern composed of lines of different colors can be observed under natural light. Due to the unique undulating structure of the light-changing anti-counterfeiting pattern itself, different colors will be observed under different viewing angles. Mixed light of visible light emitted by fluorescent materials in...

Embodiment 3

[0072] The background shading is printed with the offset fluorescent ink O, and the gravure lines are printed with the engraving gravure fluorescent ink P of the same color as the offset ink, wherein the gravure lines have different heights. The fluorescent materials in the offset fluorescent ink O and the engraved gravure fluorescent ink P emit different colors of visible light under the excitation of ultraviolet light. The cross-sectional view of the optically variable anti-counterfeiting pattern with surface relief structure in this embodiment is as follows Figure 4 As shown in the figure, W B =60μm, W A = 60 μm, H A1 = 30 μm, H A2 = 80 μm. Under natural light, the light-changing anti-counterfeiting pattern is displayed as an overall pattern of the same color; when observed at a vertical angle under an ultraviolet lamp, what is observed is the mixed light of visible light emitted by fluorescent materials in different fluorescent inks. Adjust the viewing angle, When ob...

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PUM

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Abstract

The invention relates to an anti-counterfeiting element with a light variation security pattern; the surface of the anti-counterfeiting element is provided with the light variation security pattern with a fluctuation structure, the light variation security pattern can be observed to have different optical effect by utilizing an instrument along with the different observation angles; especially, the visible light emitted by the light variation security pattern can display different colors along with the different observation angles under the ultraviolet light, so as to lead the anti-counterfeiting element with the light variation security pattern to have two-line anti-counterfeiting characteristic which can be distinguished by the masses; in addition, beside the two-line anti-counterfeiting characteristic, the anti-counterfeiting element has other anti-counterfeiting characteristics which are combined with the infrared rays, so as to form the infrared anti-counterfeiting element with the composite anti-counterfeiting characteristics and further improve the counterfeiting difficulty of the anti-counterfeiting element; the invention further provides a valuable product with the anti-counterfeiting element.

Description

technical field [0001] The invention relates to an anti-counterfeiting element with an optically variable anti-counterfeiting pattern for protecting valuable articles, in particular to an anti-counterfeiting element which can be realized directly by printing, and the optically variable anti-counterfeiting pattern can be observed under a corresponding instrument according to different viewing angles. Security elements with different optical effects. The invention also relates to a method for manufacturing an anti-counterfeit element with the optically variable anti-counterfeit pattern. Background technique [0002] Due to the continuous popularization of color copiers and imaging systems and the continuous improvement of printing technology, the phenomenon of counterfeiting banknotes, passports and ID cards has increased. For the purpose of preventing counterfeiting and counterfeiting, items of value such as certificates, securities and branded products are often provided wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B44F1/12B41M3/14B42D15/00B42D25/378B42D25/382B42D25/387
Inventor 刘卫东柯光明周基炜赵红梅邵国龙周乐魏先印
Owner CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD
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