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Production of a security element provided with colored micro-depressions

An anti-counterfeiting component and miniature technology, which is applied in the direction of printed matter, printing, information-carrying cards, etc., can solve the problem of reducing contrast differences and achieve the effect of cost reduction

Inactive Publication Date: 2012-08-15
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in doing so, the problem arises that pigment residues usually also remain outside the microstructured elements as so-called tonings, thereby degrading the connection between the pigmented microstructured elements, which are usually configured as recesses, and the rest of the surface. Contrast difference between sections

Method used

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  • Production of a security element provided with colored micro-depressions
  • Production of a security element provided with colored micro-depressions
  • Production of a security element provided with colored micro-depressions

Examples

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Embodiment Construction

[0032] For better presentation, the figures are not shown true to scale, especially with regard to layer thicknesses. Furthermore, hatching is partially omitted in order to be able to show the structure of the corresponding security element 1 more clearly. Furthermore, functionally and / or structurally identical or identical elements are provided with the same reference numerals in the various figures in order to prevent repeated descriptions. In the subsequent description of the cross-sectional position, the side at the top in the schematic diagram is referred to as the frontal side of the security element. Correspondingly, the rear side is the side located at the bottom. This convention is only used to simplify the description, and is not intended to impose any restrictions on the structure and / or application of the anti-counterfeiting element.

[0033] exist figure 1 In the illustrated embodiment, the security element 1 is integrated in the bank note 2 . The security ele...

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Abstract

The invention relates to a method for producing a security element provided with micro-depressions (8) for security papers, documents of value or the like, the micro-depressions (8) being colored with a specific ink and the method comprising the following steps: a) coating an upper surface (5) of a substrate (4) with a layer that can be embossed (7), b1) molding micro-depressions (8) in the layer that can be embossed (7) in order to form an embossed layer (7), c) applying the specific ink to the upper surface (5), so that the ink (14) remains in the micro-depressions (8), characterized by b2) applying a structured protective layer (11; 10, 22), e.g. a washable ink or a resist lacquer, to the coated upper surface (5) wherein the structured protective layer (11; 10, 22) does not cover the micro-depressions (8) which are intended to be colored with the specific ink, after step b1) and before step c), d) removing the structured protective layer (11; 10, 22) and therefore any coloring (16) after step c).

Description

technical field [0001] The invention relates to a method for producing security elements for security paper, value documents or the like, which are equipped with micro-recesses, which are colored with a pigment, the method having the following steps: The lacquer coats the upper side of the carrier, micro-recesses are formed in the lacquer in the varnished areas of the upper side, and some pigment is applied to the upper side and the excess is scraped off so that the pigment remains in the micro-recesses. Background technique [0002] Objects to be protected are often provided with security elements to allow the authenticity of the object to be checked and at the same time serve to prevent unauthorized copying. [0003] Objects to be protected are, for example, security papers, identity documents and valuable documents (e.g. banknotes, chip cards, passports, identity cards, identity cards, shares, bonds, certificates, receipts, checks, admission tickets, credit cards, health ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B42D15/00B42D15/10
CPCB42D2033/10B42D2033/20B42D2035/24B42D2035/44B42D25/425B42D25/43B42D25/328B42D25/324B42D25/47B42D25/42B42D25/29B42D25/373B42D25/378
Inventor M.科勒
Owner GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH