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Invisible fluorescent anti-counterfeiting method and anti-counterfeiting marker

An anti-counterfeiting label and fluorescent technology, applied in the field of anti-counterfeiting, can solve the problems of low storage capacity, limited improvement of anti-counterfeiting quality, and affect the appearance of products, and achieve the effect of large storage capacity, enhanced anti-counterfeiting strength, and improved visual traces.

Active Publication Date: 2020-09-25
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method only embeds the hidden information into one color separation channel, the storage capacity is low, there are moiré patterns visible to the naked eye in the background color block, which affects the appearance of the product, and the improvement of the anti-counterfeiting quality is limited

Method used

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  • Invisible fluorescent anti-counterfeiting method and anti-counterfeiting marker

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 and 2 As shown, the present embodiment provides an invisible fluorescent anti-counterfeiting method, comprising the following steps:

[0039] S1. Set up a feature coding database: randomly generate non-repetitive anti-counterfeiting codes through segmented orderly and dynamic algorithms, anti-counterfeiting codes (such as figure 2 2-1, 2-2, 2-3) is a combination of numbers, letters and graphics;

[0040] S2. Embedding moiré encryption information: the horizontal moiré pattern with infinite cycle is generated by the anti-counterfeiting code information, (such as figure 2 Shown in 3) Embed color image R, G, B color separation channels through digital image processing algorithm (such as figure 2 1-R, 1-G, 1-B shown in the periodical amplitude modulation dots), wherein the color image 1 is a digital image of the RGB color mode, and then design the corresponding unlocking password chip of the same period according to the same principle (such as figur...

Embodiment 2

[0046] With reference to Example 1, this embodiment provides an invisible fluorescent anti-counterfeiting method. The difference from Example 1 is that: in step S1, the code is a number; in step S2, the encrypted information of the moiré pattern is a longitudinal moiré pattern; the step In S3, the fluorescent material is a rare earth complex fluorescent material; in step S4, the method of making the fluorescent anti-counterfeiting mark is gravure printing; in steps S5 and S6, the special light source is a 365nm continuous laser.

Embodiment 3

[0048] Referring to Embodiment 1, this embodiment provides an invisible fluorescent anti-counterfeiting method. The difference from Embodiment 1 is that: in step S1, the codes are letters; in step S2, the moiré encrypted information is horizontal and vertical moiré In step S3, the fluorescent material is a luminescent metal organic framework material; in step S4, the method of making the fluorescent anti-counterfeiting mark is flexo printing; in steps S5 and S6, the special light source is an ultraviolet mercury lamp.

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Abstract

The present invention discloses an invisible fluorescent anti-counterfeiting method and an anti-counterfeiting marker, moire pattern encryption information is embedded into a color separation channelof a fluorescent color image, the formed invisible image only shows a full-color effect under the excitation of a special light source, and coded information hidden in a specific position of the colorimage is recognized through filtering color separation and expert unlocking. According to the invisible fluorescent anti-counterfeiting method based on Moire pattern encryption, multi-dimensional information coding in an invisible image is achieved, the invisibility is good, a decoded pattern is clear, the invisible fluorescent anti-counterfeiting method and the anti-counterfeiting marker have the advantages of being low in cost, difficult to forge, easy to popularize and the like, the anti-counterfeiting marker is suitable for batch production, and the product is endowed with the multiple anti-counterfeiting functions of two-line anti-counterfeiting and three-line anti-counterfeiting.

Description

technical field [0001] The invention relates to the technical field of anti-counterfeiting, and more specifically, to an invisible fluorescent anti-counterfeiting method and an anti-counterfeiting marker. Background technique [0002] Counterfeit and shoddy products are becoming more and more rampant, which has a serious negative impact on the global market, and the development of high-tech anti-counterfeiting technology has become an urgent need. Fluorescent anti-counterfeiting not only has the advantages of simple implementation, good concealment, and low cost, but also presents unique artistic effects, which has attracted the attention of anti-counterfeiting workers and opened up a new way for information hiding and packaging anti-counterfeiting. However, for high-end brand protection and anti-counterfeiting traceability, a single form of fluorescent anti-counterfeiting is obviously insufficient, and high-end anti-counterfeiting technology integrating multiple innovative ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F3/02G06K19/06
CPCG09F3/0294G09F3/0297G06K19/06037
Inventor 杨玲刘跃军谭海湖钟云飞王正祥胡垚坚
Owner HUNAN UNIV OF TECH
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