Embossing plate, production method, and embossed security element

A technology of embossed boards, elements, applied in the field of manufacturing such embossed boards, security elements

Active Publication Date: 2018-10-23
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Grids of micromirrors appear colorless due to the size of the micromirrors of a few micrometers, but exhibit dynamic effects, or produce a three-dimensional appearance to the observer despite their essentially flat shape

Method used

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  • Embossing plate, production method, and embossed security element
  • Embossing plate, production method, and embossed security element
  • Embossing plate, production method, and embossed security element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] The invention will now be elucidated using the example of a security element for banknotes. figure 1 To this end, a schematic view of a bank note 10 is shown, which has a transfer element in the form of a film patch 14 into which a security element 12 according to the invention is pressed. However, the invention is not restricted to the transfer elements shown for illustration in bank notes, but can also be used, for example, in security threads, wide security strips or cover films, which are arranged in opaque regions of any data carrier , window area or through opening.

[0062] exist figure 2 The security element 12 shown in more detail in shows an embossed overall pattern 20, which is composed of three embossed sub-patterns, which are schematically shown in the figure by a line pattern 22, having a comb structure A rectangle 24 and a rounded structure 26 are shown. In practice, the overall pattern and the sub-patterns are often complex visual shapes, the line pa...

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Abstract

The invention relates to an embossing plate (110) for embossing a desired motif, which contains at least two sub-areas having different optical appearance, into an embossing substrate. According to the invention, the embossing plate (110) is provided with an embossing relief (112) in the form of the inverted desired motif and the embossing relief (112) contains at least two sub-areas (114, 116) arranged in precise register in relation to each other in pairs, wherein in each sub-area (114, 116) the embossing relief (112) consists of a plurality of embossing elements (120, 122) having a characteristic structure size, and the characteristic structure sizes of the embossing elements (120, 122) of two sub-areas (114, 116) differ in pairs by at least a factor of 1.5.

Description

technical field [0001] The invention relates to an embossing sheet for embossing a desired pattern comprising at least two partial regions with images of different visual appearance into an embossing substrate. The invention also relates to a method for producing such an embossed sheet and a security element which can be produced using such an embossed sheet. Background technique [0002] For security purposes, data carriers, such as value documents or identity documents, as well as other items of value, such as brand-name goods, usually have security elements that allow the authenticity of the data carrier to be checked and at the same time serve as protection against impermissible copying. [0003] Security elements with viewing angle-dependent effects are of particular importance in the guarantee of authenticity, since these security elements themselves cannot be reproduced with the most modern reproduction equipment. The security element here has an optically variable e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B42D25/425B42D25/324B42D25/328
CPCB42D25/425B42D25/324B42D25/328G03F7/0012G03F7/0035G03F7/2059G03F7/0005G03F7/0002G03F7/095G03F7/2051
Inventor C.斯托克尔M.拉姆F.艾姆索尔H.洛赫比勒J.希纳贝克C.弗斯M.R.J.谢勒C.格斯特尔A.劳赫
Owner GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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