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Security element with an optically variable structure

An anti-counterfeiting component and variable technology, applied in the direction of printing, printing, printing devices, etc. for the production of special varieties of printed matter

Active Publication Date: 2009-04-29
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Although this optically variable security element indicates to the observer a relatively strong flipping effect, parallel line-like printed patterns with a constant line spacing can currently Cost-effective imitation with the help of modern reproduction techniques
It also has the disadvantage that the linear print pattern described in CA1019012 does not allow finely designed pictorial subjects with rich details like coatings

Method used

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  • Security element with an optically variable structure
  • Security element with an optically variable structure
  • Security element with an optically variable structure

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0103] example 1( Figure 2 to Figure 4 and Figure 34)

[0104] figure 2 A schematic cross-sectional view along line A-A (see Figure 1) is shown, and with image 3 and Figure 4 Together, an optically variable structure is shown in which the embossing structure 4 consists of regularly arranged uniform linear embossing elements 5 , ie configured as a periodic linear grid. The linear embossing elements 5 are provided with a coating 7 which is designed as a colored arrangement of non-linear basic elements. The individual colored faces of the non-linear basic elements are located on the edges of the linear embossed elements. The configuration of the linear embossing elements 5 as protrusions, preferably produced by embossing the data carrier, is clearly visible in a sectional view on the upper side of the data carrier. If the data carrier is mechanically deformed by means of an embossing tool, the underside of the data carrier exhibits a negative deformation. The deformati...

example 2

[0118] Example 2 ( Figure 15 and Figure 16)

[0119] Figure 15The coating 7 according to the invention shown in FIG. 16 comprises three types of non-linear basic elements 8 , 13 , 39 of different colors which are each arranged in the form of a grid with a constant grid width. Furthermore, basic elements 8 , 13 , 39 are each printed on a substrate (not shown in detail) in such a way that they form a colored basic element 52 . Corresponding to the regular arrangement of the individual basic elements, the colored basic elements 52 are also arranged in the form of a grid with a constant grid width. In this case, a colored basic element 52 is located in each grid cell 12 of the grid. The resulting regular arrangement of colored elementary elements 52 is divided into three subregions A, B, C in the preferred embodiment shown. Each subarea is provided with a not shown embossing structure 4 consisting of linear embossing elements 5 . The direction of the embossed structure 4 ...

example 3

[0120] Example 3 ( Figure 17a , Figure 17b, Figure 18a and Figure 18b)

[0121] exist Figure 17a The coating 7 shown in FIG. 17b is composed of three circular primitives 8, 9 and 13 of different colours, which also define a colored primitive 52 located within the grid cells 12 of the regular grid. Next, preferred directions are defined by the arrangement of the basic elements 8 , 9 and 13 , along which preferred directions the embossing takes place. In Fig. 17b the preferred directions 16, 18, 19 are identified and the embossed structure 64 along the preferred direction is schematically represented. The cross-section of the linear imprint element is triangular and corresponds to Figure 34a The cross section shown. The embossed structure 64 has a peak (amplitude) or apex 20 and a recess 21 therebetween. Thus, the non-linear elementary elements 8 and 9 are located on one edge of the non-linear embossing element when the coating 7 is embossed in the preferred direction ...

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Abstract

The invention relates to a security element with an optically variable structure having an embossing structure with linear embossing elements and a coating, wherein the embossing structure and the coating are arranged such that at least parts of the coating can be seen in full when viewing at right angles, but are covered when viewing at an oblique angle. The fact that substantially the entire coating is formed by non-linear base elements which are characterized by the parameters outline, size, colour and orientation and are combined with the embossing structure such that, when the viewing direction is changed, different information becomes visible, can be used to increase the security against forgery of the security element.; The invention further relates to a method for producing such asecurity element, a data carrier having such a security element and the use of such a security element or data carrier for product security.

Description

technical field [0001] The invention relates to a security element with an optically variable structure having an embossing structure with linear embossing elements and a coating, wherein the embossing structure and the coating are arranged in such a way that at least Parts of the coating are fully visible when viewed vertically, but are covered when viewed obliquely. The invention also relates to a method for producing such a security element, a data carrier with such a security element, and the use of such a security element or data carrier for product security. Background technique [0002] In order to prevent imitation, especially against imitation by means of color copying or other reproduction methods, data carriers (such as banknotes, securities, credit cards, identity cards, passports, certificates, etc., labels, packaging or other elements for product security) are equipped with There is an optically variable anti-counterfeiting structure. Here, the anti-counterfe...

Claims

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Application Information

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IPC IPC(8): B42D15/00B42D15/10
CPCB42D2033/24B42D15/10B41M1/24B42D2035/44B41M3/148B42D2035/20B42D15/0013B42D25/29B42D25/324B42D25/43B42D25/41
Inventor 罗杰·亚当齐克克里斯托夫·鲍尔达斯卡尔海因茨·迈耶彼得·弗朗兹
Owner GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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