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Security element and method for the production thereof

A security element and focusing element technology, applied in papermaking, textiles, papermaking, printing, etc., can solve the problems of reduced effectiveness of anti-counterfeiting protection and limitation of theme recognizability

Active Publication Date: 2012-04-04
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Observers no longer perceive visual effects as security features, but gradually as mere design changes, so the effectiveness of such security features as anti-counterfeiting protection is decreasing
Furthermore, the image impression created in this way can only be seen from a preferred viewing direction and under certain lighting conditions
Especially in poor lighting conditions, the intelligibility of holographically produced subjects is very limited

Method used

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  • Security element and method for the production thereof
  • Security element and method for the production thereof
  • Security element and method for the production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0070] The present invention will be described in detail by taking banknote 1 as an example. figure 1 A schematic diagram is shown of a banknote with two security elements 2 and 6, each formed according to an exemplary embodiment of the invention. The first security element forms a security thread 2 which protrudes in certain window areas 4 on the surface of the bank note 1 and which is embedded in the bank note 1 in the area between these window areas. The second security element is formed by a fixed security element 6 of any shape.

[0071] In order to explain the principle according to the invention, Fig. 2 shows schematically the layer structure of a security element 10 according to the invention, in the form of a sectional view (Fig. 2(a)), and for better viewing, in an exploded view (Fig. 2(b)). For example, the security element 10 may take the form of a security thread. However, any other contour-shaped security element is also possible within the scope of the invent...

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PUM

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Abstract

In a security element (A) having first and second authenication features (AF's), the first AF consists of focusing components and microscopic structures, arranged in first and second rasters respectively and placed such that the microstructures appear enlarged when viewed through the focusing components. The second AF is mechanically and / or visually examinable, and not influenced by the focusing component arrangement of the first AF. An independent claim is included for the production of (A), by forming the first AF by combining the focusing component and microscopic structure arrangements, then combining the second AF with at least one second AF.

Description

technical field [0001] The invention relates to a security element for protecting objects of value. The invention also relates to a method for producing such a security element, a security document equipped with such a security element and an item of value. Background technique [0002] For protection purposes, items of value, such as branded items or value documents, are often equipped with security elements which allow a check of the authenticity of the item of value and at the same time serve to prevent unauthorized duplication. [0003] Security elements can be developed, for example, in the form of security threads embedded in banknotes, tear strips for product packaging, external security strips or self-supporting transfer elements, such as patches or labels, price document. [0004] In order to prevent the security element from being reproduced even by top-quality color copiers, the security element exhibits a plurality of optically variable elements, which convey d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/48
CPCB42D2035/28B42D2033/24B42D25/355B42D25/324B42D15/0026
Inventor W·考勒M·海姆M·迪希特尔W·霍夫默勒
Owner GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH