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Detection method for laser anti-counterfeiting material based on color coding

A detection method and color coding technology, applied in the field of laser anti-counterfeiting, can solve the problems of increasing the complexity and cost of instruments, and achieve the effect of improving anti-counterfeiting performance, flexible and diverse anti-counterfeiting methods, and good anti-counterfeiting effect.

Inactive Publication Date: 2014-01-22
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Another patent CN1397795A mentions the detection method and detection device of infrared up-conversion materials. The number of detectors in the detection device in this patent is closely related to the color area emitted by the luminescent material. For example, three kinds of light colors are required to detect three kinds of light colors. detectors, increasing the complexity and cost of the instrument

Method used

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  • Detection method for laser anti-counterfeiting material based on color coding

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Embodiment 1-3 3

[0024] The preparation of embodiment 1-3 three kinds of color ink anti-counterfeiting materials

Embodiment 1

[0025] Embodiment 1, the oxysulfide doped with ytterbium and thulium available on the market, its chemical molecular formula is Y 2 o 2 S: Yb, Tm take out 50g and 50g of polyurethane ink binder mixed raw materials, mix and stir, and roll on a three-roll ink mill to prepare screen printing ink. The ink mark can be excited by infrared light 800-1000nm to emit blue light. The emission spectrum on the spectrometer is Figure 1 The spectrogram of Example 1 in.

Embodiment 2

[0026] Embodiment 2, the oxysulfide of doped ytterbium and erbium available on the market, its chemical molecular formula is Y 2 o 2 S: Yb, Er take out 50g and 50g of polyurethane ink binder mixed raw materials, mix and stir, and roll on a three-roll ink machine to prepare screen printing ink. The ink mark can be excited by infrared light 800-1000nm to emit green light. The emission spectrum on the spectrometer is Figure 1 The spectrogram of the embodiment two in.

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Abstract

The invention provides a detection method for a laser anti-counterfeiting material based on color coding. The anti-counterfeiting material contains luminescent materials which can emit visible light under the excitation of near infrared laser. Through doping of different kinds of the luminescent materials according to different concentration ratios in preparation of the anti-counterfeiting material, the relative intensity of three basic color areas of visible light emitted by the anti-counterfeiting material can be controlled. According to the invention, a detection apparatus is used for programming and coding of different colors emitted by a substrate coated with the anti-counterfeiting material according to difference of intensity of three colors; a color sensing receiver is used for examination and can detect an anti-counterfeiting code of an anti-counterfeiting mark in a carrier. The detection apparatus is simple, portable, practicable and intelligentized, produces accurate detection results and has a good anti-counterfeiting detection function.

Description

Technical field: [0001] The invention relates to a color-coded laser anti-counterfeiting technology, in particular to a multi-color anti-counterfeiting ink material and plastic material, and a device for coding and detecting the anti-counterfeiting material. Background technique: [0002] The luminous anti-counterfeiting methods currently used are generally excited by ultraviolet light to obtain visible light, and ultraviolet light is relatively harmful to the human body. Moreover, relying on the rough judgment of the human eye to the color, only a few light colors can be distinguished, which greatly limits the diversity of anti-counterfeiting materials. Anti-counterfeiting in multiple batches is far from enough for a manufacturer with multiple types of products. Such luminescent materials are easy to buy abroad, and therefore are easy to be imitated. For example, the patent CN 1422912A "luminescent anti-counterfeiting ink and its preparation method and application" disclo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/63
Inventor 岱钦朝克夫
Owner SHENYANG LIGONG UNIV
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