Security element comprising magnetic materials having the same remanence and a different coercive field intensity

A technology of magnetic materials and anti-counterfeiting components, applied in thin material processing, transportation and packaging, computer parts, etc., to achieve the effect of improving clarity

Active Publication Date: 2007-11-21
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to the danger that security elements or documents of value can be counterfeited relatively

Method used

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  • Security element comprising magnetic materials having the same remanence and a different coercive field intensity
  • Security element comprising magnetic materials having the same remanence and a different coercive field intensity
  • Security element comprising magnetic materials having the same remanence and a different coercive field intensity

Examples

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Embodiment Construction

[0023] FIG. 1 shows a banknote 1 made of paper or plastic having a security element 2 in the form of a strip extending over the entire width of the banknote 1 . Of course, the banknote 1 can also have anti-counterfeiting components such as watermarks, steel gravure printing, anti-counterfeiting threads, luminescence marks and the like.

[0024] The anti-counterfeiting element 2 is arranged on the banknote 1, for example, printed, glued, combined in the banknote 1 and so on. The security element 2 has regions with magnetic materials 3a, 3b having different coercive field strengths. However, the remanence of the regions 3a, 3b is equally high. This can be achieved, for example, by uniformly selecting the layer thicknesses of the regions 3a, 3b and / or by uniformly selecting the content of the magnetic material 3a, 3b in these regions.

[0025] Some preferred embodiments are described in more detail below with reference to FIGS. 2 and 3 , which show a cross-section of the bankno...

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PUM

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Abstract

The invention relates to a security element for protecting documents of value, which has magnetic material. Furthermore, the invention relates to a document of value, a transfer material and method for producing such security elements and documents of value as well as a method and an apparatus for checking such a security element or document of value. According to the invention the security element has at least two magnetic materials, wherein the magnetic materials have different coercive field strengths and are applied onto and/or incorporated in the security element in such a manner that their remanence is equally high.

Description

technical field [0001] The invention relates to a security element for protecting value documents with magnetic material. Furthermore, the invention relates to a value document, a transfer material and a method for producing such a security element and a value document, as well as a method and a device for checking such a security element or a value document. Background technique [0002] A document of value within the meaning of the invention may be a banknote, but also a stock, a deed, a postage stamp, a cheque, an admission ticket, a ticket, an air ticket, an ID card, a visa label, etc., a label, a seal, a package, a security paper or Other elements for product protection. Therefore, the short names "value document" or "security element" below always include documents of the above-mentioned type. [0003] It is known that banknotes have a magnetic material for verifying the authenticity of the banknote. Such a magnetic material is, for example, a component of printing ...

Claims

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Application Information

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IPC IPC(8): B42D15/00
CPCB42D2033/16B42D25/29G06K19/12G07D7/04Y10T428/24802B42D25/369
Inventor 于尔根·舒茨曼洛撒·舒特
Owner GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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