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Marketable file and method for identifying same

A valuable document, luminescent technology, applied in printing, printed matter, etc., can solve the problems of low threshold, weakened anti-counterfeiting effect, anti-counterfeiting technology deciphering, etc., and achieve the effect of simple, accurate and easy-to-realize authenticity

Active Publication Date: 2014-11-05
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

The threshold of current holographic anti-counterfeiting technology and optical variable ink technology is getting lower and lower, and the effect of anti-counterfeiting is gradually weakened
In addition, common anti-counterfeiting technologies such as various visible fluorescent anti-counterfeiting, thermochromism and other anti-counterfeiting technologies are also easy to obtain from the market, and anti-counterfeiting technologies are gradually being deciphered

Method used

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  • Marketable file and method for identifying same
  • Marketable file and method for identifying same
  • Marketable file and method for identifying same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Such as figure 2 Shown is an electroluminescent pigment in an ink that is selected for use in a pair. The material of the pigment is zinc sulfide doped with Mn and Cu, figure 2 Indicates the change of the emission spectrum under the excitation of the frequency-changing AC electric field. The solid line represents the emission spectrum corresponding to 400Hz, and the dotted line represents the emission spectrum corresponding to the frequency of 4000Hz. The electric field strength is about 10 6 -10 7 V / m. image 3 Shown is the electroluminescent pigment in another ink selected for pairing. The material of the pigment is zinc sulfide doped with Mn, image 3 Indicates the change of the emission spectrum under the excitation of the frequency-changing AC electric field. The solid line represents the emission spectrum corresponding to 400Hz, and the dotted line represents the emission spectrum corresponding to the frequency of 4000Hz. The electric field strength is about 1...

Embodiment 2

[0080] Two electroluminescent inks with luminous lifetimes were printed by screen printing. Image 6 It shows the back view of a banknote. The face value in the lower right corner is printed by screen printing with ZnS:Mn, Cu and Zns:Cu two electroluminescent pigments. Under the excitation of an electric field with a frequency of 400Hz, since the spectra emitted by the two luminescent pigments are not much different, the face value in the lower right corner can be fully presented.

[0081] Figure 7 It shows the back view of a banknote. Under the excitation of an electric field with a frequency of 4000 Hz, due to the large difference in the spectra emitted by the two luminescent pigments, the face value in the lower right corner has obvious contrast at the position where different inks are printed.

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Abstract

The invention relates to a marketable file and a method for identifying the same, and the marketable file and the method belong to the technical field of anti-counterfeiting of safe articles such as bank notes, certificates, magnetic cards, marketable bills, and the like. The invention discloses a marketable file which comprises a marketable file substrate and at least one electroluminescent substance for inspecting the marketable file, wherein the electroluminescent spectrums generated by the electroluminescent substance respectively under the excitations of electric fields of at least two types of characteristic frequencies have different spectral shapes, and the electroluminescent substance is combined with the marketable-file substrate in a code form. Based on the same principle, the invention also discloses a method for identifying the marketable file. Based on the particular relationship determination, the purpose of identifying the marketable files by using electroluminescence is achieved, so that the identification on the marketable files is simpler, more accurate and easier to realize.

Description

technical field [0001] The invention relates to the anti-counterfeiting technical field of valuable documents such as banknotes, certificates, magnetic cards, bills, etc., in particular to a method for identifying the authenticity of valuable documents and a security element with anti-counterfeiting features. Background technique [0002] At present, it is more and more easy for counterfeiters to use high-tech technologies, such as color copiers, advanced imaging systems and printing technologies, to manufacture counterfeit banknotes, passports, tickets and ID cards and other important valuable documents, securities and vouchers. The threshold of the current holographic anti-counterfeiting technology and optical variable ink technology is getting lower and lower, and the anti-counterfeiting effect is gradually weakened. In addition, common anti-counterfeiting technologies such as various visible fluorescent anti-counterfeiting and thermochromic anti-counterfeiting technologi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B42D15/00
Inventor 陈海波张莉魏先印李欢杨志洪唐士立张鲁晶胡自力黄小义
Owner CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD
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