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Data Support with optically variable element

A data carrier and optical technology, applied in the field of stamping molds, can solve the problem that optical variable elements are not very suitable for fast visual inspection, and achieve the effect of high anti-counterfeiting performance and easy production

Inactive Publication Date: 2006-07-05
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In known optically variable security elements, the line printing is arranged essentially on the sides of the relief structure, whereby the reversal of the contrast or tilting effect is noticeable, but only takes place within a very narrow viewing angle
Thus, for the visual inspection of known optically variable elements, this exact viewing angle must be found, so these optically variable elements are not well suited for quick visual inspection

Method used

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  • Data Support with optically variable element
  • Data Support with optically variable element
  • Data Support with optically variable element

Examples

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Embodiment Construction

[0047] FIG. 1 shows a data carrier according to the invention with an optically variable structure 2 . The optically variable structure 2 is characterized in that it can be tested without assistance by human beings and optionally also tests the authenticity of the data carrier in addition to other security features. Other features are, for example, security threads, watermarks, and the like. The use of the optically variable structure 2 according to the invention is particularly advantageous in banknotes, but can also be used for other documents of value, such as shares, checks and the like. Labels or other elements for product protection may also be provided with such optically variable elements.

[0048] The optically variable structure 2 essentially comprises a relief structure and a print opposite the surface of the data carrier, which are combined such that at least partial areas of the coating are fully visible when viewed vertically and hidden when viewed obliquely.

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Abstract

The invention relates to a data carrier with an optically variable structure having an embossed structure and a coating contrasting with the surface of the data carrier. The embossed structure and the coating are so combined that at least parts of the coating are completely visible upon perpendicular viewing but concealed upon oblique viewing so that a tilt effect arises upon alternate perpendicular and oblique viewing. The coating is executed uniformly and the embossed structure is divided into partial areas where different partial embossed structures are provided.

Description

technical field [0001] The invention relates to a data carrier with an optically variable structure having a relief structure and a coating in contrast to the surface of the data carrier, the relief structure and the coating being combined such that at least part of the coating Areas are fully visible when viewed vertically, but hidden when squinted, so that, when alternately viewed vertically or squinted, a tilting effect occurs. The invention also relates to an embossing mold for producing such an optically variable structure. Background technique [0002] Equipping data carriers such as bank notes, securities, credit cards or ID cards etc. with optically variable security elements, in particular optically variable diffractive structures such as holograms, has been known for some time. The protection of holograms against counterfeiting is based on the visually distinct optical impressions that can be clearly discerned when the viewing angle changes, which cannot be reprod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B42D15/00B42D15/10B42D25/29B42D25/328B42D25/425
CPCB42D15/105B42D25/328B44B5/026B42D2035/28B42D15/0013B42D25/425B42D25/29B42D25/324B42D2035/16B42D2031/14B42D2035/20
Inventor 约翰·米勒莱因哈德·普拉施卡于尔根·泽布斯克里斯托弗·鲍尔达斯
Owner GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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