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Security element comprising a lenticular image

A technology of anti-counterfeiting components and lenses, which can be used in printing and information-carrying cards, etc., and can solve the problems of difficult, high, and costly laser engraving methods

Active Publication Date: 2022-02-11
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the downside is that laser engraving methods are often difficult to implement on an industrial scale
In foil production, for example, laser cutting of millimeter-scale patterns using masks or scanners is a difficult and costly technical challenge given the foil widths and processing speeds commonly used in anti-counterfeiting applications

Method used

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  • Security element comprising a lenticular image
  • Security element comprising a lenticular image
  • Security element comprising a lenticular image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] The invention will now be illustrated by the example of a security element for banknotes. figure 1 A schematic view of a banknote 10 with a security element 12 according to the invention in the form of an adhesive transfer element is shown. In this exemplary embodiment, the security element 12 exhibits an oblique image which, depending on the viewing direction, exhibits one of two different appearances 14A, 14B.

[0057] However, the invention is not restricted to the exemplarily shown transfer elements for banknotes, the invention can also be used, for example, for security threads, wide security strips or covering foils arranged on opaque areas, window areas or through-openings of data carriers piece.

[0058] back to figure 1 In the diagram in , the two appearances in this exemplary embodiment are formed by a two-color graphical representation 14A of the number "50" and a graphical representation 14B of two colored rectangles, but it is understood that in practice ...

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Abstract

The invention relates to a security element (12) for protecting security paper, value documents and other data carriers (10), said element comprising a lens image comprising a lens formed by a plurality of microlenses (26) A grid (24) and a radiation-sensitive patterned layer (30) arranged at a certain distance from the lens grid, wherein the radiation-sensitive patterned layer (30) includes a plurality of transparent areas (40) produced by radiation action in a patterned area ). According to the invention, the radiation-sensitive patterned layer (30) has a colored sublayer (32) and a contrasting sublayer (34), at least in the patterned area, wherein the colored sublayer (32) comprises a chromophore effect pigment, which is placed in the contrasting sublayer. The background of the layer (32) has a colored effect, but appears transparent without the contrasting layer.

Description

technical field [0001] The invention relates to a security element for protecting security paper, value documents and other data carriers, the security element has a lens grid image comprising a lens grid composed of a plurality of microlenses and arranged in A radiation-sensitive patterned layer at a certain distance from the lens grid, wherein the radiation-sensitive patterned layer in the moving region includes a plurality of transparent regions generated by radiation action. Background technique [0002] Data carriers such as value documents or identification documents and other valuable items such as branded goods are often provided with security elements for anti-counterfeiting purposes which allow the authenticity of the data carrier to be verified and at the same time act as a safeguard against illegal copying means. [0003] Security elements play a special role in authentication assurance with viewing angle-dependent visual effects, since they cannot be reproduced...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B42D25/324B42D25/36B42D25/351B42D25/29B42D25/435
CPCB42D25/36B42D25/324B42D25/351B42D25/29B42D25/435B42D25/23B42D25/355B42D25/364B42D25/378
Inventor V.雷克A.格雷加雷克A.巴尔
Owner GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH