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Heat-sensitive magnetic anti-fake ink

An anti-counterfeiting ink and magnetic technology, applied in inks, household appliances, applications, etc., can solve the problems of limited anti-counterfeiting ability, dullness and other problems, and achieve the effect of increasing the difficulty of imitation and improving the strength of anti-counterfeiting.

Inactive Publication Date: 2005-05-18
ZHONGBIAO ANTICOUNTERFEIT PRINTING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of science and technology, compared with other anti-counterfeiting technologies, only relying on "remanent magnetism" anti-counterfeiting cannot add more pre-added conditional factors, and the anti-counterfeiting ability is limited. Especially with the emergence of copying technology, many copies have certain "Magnetism" makes it boring to rely on a single "remanent magnetism" as an anti-counterfeiting feature; the "magnetic ink" imprint is mostly used for machine reading signals and information storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Example 1 brown embossed printing ink, its magnetic disappearance temperature region is ≥ 100 ℃

[0020] Raw material ratio (w / w)

[0021] Alkyd resin 10-30

[0022] Magnetic material (MnZnFerri) 45-65

[0023] Mineral oil 5-10

[0024] Linseed oil 5-10

[0025] Calcium carbonate 6-7

[0026] Auxiliary 2-3

example 2

[0027] Example 2 black screen printing ink, its magnetic disappearance temperature region is ≥ 70 ℃

[0028] Modified resin oil 20

[0029] Magnetic material (NiMnSn) 40-60

[0030] carbon black 1

[0031] Varnish 10

[0032] Filler 7-27

[0033] Auxiliary 2-3

example 3

[0034] Example 3 Dark green embossed ink, the temperature zone of magnetic disappearance is ≥50°C

[0035] Alkyd resin 10-30

[0036] Phenolic resin 5-10

[0037] Magnetic material (Ni2MnIn) 45-65

[0038] Phthalocyanine Green 10

[0039] Mineral oil 1-5

[0040] Colloidal Calcium 1-5

[0041] Auxiliary 1-3

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Abstract

The present invention relates to magnetic ink, and especially a kind of magnetic ink with magnetism varying with temperature. The anti-fake mark printed with the anti-fake ink exhibits certain magnetism under the temperature lower than some specific value and possesses no magnetism under the temperature higher than the specific value. The specific value is designed based on specific requirement within 30-150 deg.c. The heat-sensitive magnetic anti-fake ink may be printed in different printing mode and may be in different colors, black, brown, blue, etc. The present invention raises anti-fake capacity.

Description

Technical field: [0001] The present invention relates to a kind of magnetic ink, especially relates to a kind of magnetic ink which can change its magnetism with the change of temperature, which can be used on various printed matter and become an anti-counterfeiting technical measure. Background technique: [0002] As an anti-counterfeiting ink, magnetic ink can be traced back to the 1930s. As an anti-counterfeiting method, it has been widely used in social life, such as US dollars, bills, and securities. Basically, it is to check that the imprint has a certain residual magnetism, so as to achieve the purpose of identifying the authenticity. With the development of science and technology, compared with other anti-counterfeiting technologies, only relying on "remanent magnetism" anti-counterfeiting cannot add more pre-added conditional factors, and the anti-counterfeiting ability is limited. Especially with the emergence of copying technology, many copies have certain "Magne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50
Inventor 陶剑泥寸云涛武小钢凌江王崧
Owner ZHONGBIAO ANTICOUNTERFEIT PRINTING
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