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Safety product and method for printing anti-counterfeiting mark

A security product and marking technology, applied in the field of anti-counterfeiting, can solve the problems of restricting the feasibility of practical application, not using the same ink, inconvenient observation and identification, etc., and achieve the effect of improving the public anti-counterfeiting level, easy to observe, and easy to observe and identify

Active Publication Date: 2015-04-15
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

However, using two different optically variable inks at the same time can only achieve color matching within a narrow range of viewing angles, which is not convenient for public observation and identification; High, which limits the feasibility of practical applications
Another document discloses the scheme of pairing the diffractive optically variable ink with the ordinary ink. The two inks have the same matching color at one incident angle, and have no color matching at other incident angles. However, due to the diffractive optically variable ink itself It can only show low-saturation rainbow color-changing effect, which has certain requirements for the public's observation ability and methods, and the determination of its color-changing effect may also be affected by the observation environment (such as light), so the anti-counterfeiting effect is not good
The above two schemes only consider the color matching of the two inks without considering other appearance effects of the two inks. Since the optically variable ink has obvious flickering effects, if only the color matching of the two inks is achieved without considering other appearance effects match, the observer can still find that the two are not the same ink
[0004] On the other hand, the current use of optically variable inks is only based on providing angle-dependent color-changing features. With the improvement of the technical level of counterfeiters, there are still potential safety hazards for products that require a higher level of anti-counterfeiting

Method used

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  • Safety product and method for printing anti-counterfeiting mark
  • Safety product and method for printing anti-counterfeiting mark
  • Safety product and method for printing anti-counterfeiting mark

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] figure 1 It is a schematic diagram of an embodiment of the present invention, and the pattern is designed as the word "dragon", which is printed by engraved gravure printing. The upper half of the pattern, area 1, is printed with green / blue optical variable ink, and the lower half, area 2, is printed with green metallic effect ink.

[0071] Green metallic effect ink formula (weight%):

[0072]

[0073] The composition of the effect pigment in the above formula: 20-35% of the effect pigment coated with glass as the substrate, 50-70% of the effect pigment coated with mica as the substrate, and 50-70% of the effect pigment coated with alumina as the substrate 10%-30%, 0%-8% of the effect pigment coated with silica as the base material, the composition is based on the total mass of the effect pigment included in the ink, and the sum of the mass percentages of each composition reaches 100% %.

[0074] The preparation process of the ink is as follows: firstly, the binde...

Embodiment 2

[0080] figure 2 is an embodiment of the present invention where two different patterns are printed using gravure printing. Area 3 is printed with gold / green optical variable ink, and area 4 is printed with gold metallic effect ink. Golden metallic effect ink formula (weight%):

[0081]

[0082] The composition of effect pigments in the above formula: 20-35% of effect pigments coated with glass as substrate, 20-35% of effect pigments coated with mica as substrate, 10% of effect pigments coated with alumina as substrate %-30%, 20%-35% of the effect pigment coated with silica as the substrate, the composition is based on the total mass of the effect pigment included in the ink, and the sum of the mass percentages of each composition reaches 100% .

[0083] The ink was produced in a similar manner to Example 1.

[0084] Basically, when viewed vertically, both area 3 and area 4 appear golden and have the same appearance effect; when viewed basically head-on, area 3 turns gr...

Embodiment 3

[0089] image 3 is an embodiment of the present invention using engraved gravure printing. Among them, area 5 uses green / blue light-changing ink, and area 6 uses green metal effect ink with infrared absorption effect.

[0090] Green metallic effect ink formula (weight%):

[0091]

[0092] The infrared regulator in the above formula is antimony-doped tin oxide coated with mica. The ink of this example was produced in a manner similar to that of Example 1.

[0093] Basically, when viewed vertically, both area 5 and area 6 appear green and have the same appearance effect; when viewed basically horizontally, area 5 turns blue, while the color of area 6 remains unchanged, forming a sharp color contrast between the two. The near-infrared spectral reflectance of area 5 and area 6 near 850nm is about 15%. When observed under infrared light, area 5 and area 6 show basically the same high gray value.

[0094] Table 3 shows the difference in parameters of the two ink printing area...

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Abstract

The invention provides a safety product and a method for printing an anti-counterfeiting mark and belongs to the field of the anti-counterfeiting technology. The anti-counterfeiting mark on the safety product is used as safety identification information and is printed by using metal effect ink and optically variable ink. The mark printed by the two kinds of ink can display close or same appearance effects in a certain viewing angle scope and can be deemed to be printed by one ink. When the viewing angle is changed, the color of the mark printed by the optically variable ink is changed, the color of the mark printed by the metal effect ink is not changed, and the two marks show obvious color differences. Compared with the anti-counterfeiting means only utilizing one type of single optically variable ink, according to the mark disclosed by the invention, the metal effect ink and the optically variable ink can be used in a paired way, the public anti-counterfeiting features of the safety product is easier to identify, and simultaneously the anti-counterfeiting performance of the safety product is also improved.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting technology, in particular to a security product on which an anti-counterfeiting information mark is printed by pairing metal effect ink and optical variable ink, and also relates to a printing method of an anti-counterfeiting mark as security information on the security product. Background technique [0002] Optically variable ink (OVI) is an ink whose display color changes with different viewing angles. The application effect is that the marks printed or coated with this ink (including text, patterns, etc.) Different colors produce color changes, which are called "different colors with angles" or "color changes with angles". Users can easily realize feature identification by observing color changes, which is a high-tech means of public anti-counterfeiting. Since the feature of this color-dependent color is difficult to imitate, the use of various optically variable inks plays an important role ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/00B41M3/14
Inventor 周树荣高瑞吕建英武建国麻宝成
Owner CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD
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