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Security paper and a method for the production thereof

A technology for security paper and security documents, applied in the field of security paper, can solve the problems of closed openings of fiber bundles, different quality, and difficulty in reproduction.

Inactive Publication Date: 2008-04-30
GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, such openings produced during papermaking are often of varying quality and difficult to reproduce
There is also a risk that the fiber bundles partially close the opening to some extent

Method used

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  • Security paper and a method for the production thereof
  • Security paper and a method for the production thereof
  • Security paper and a method for the production thereof

Examples

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Embodiment Construction

[0042] The present invention will be described in detail below using a banknote as an example. To this end, FIG. 1 is a schematic illustration of a banknote 10 having two through holes 12 and 16 . In this case, the through-opening 12 is formed during the production of the security paper for the banknote 10 and has an irregular edge region 14 of fibers. The edge 14 is a feature of an opening that has been made in the paper formation and cannot be formed later by punching or cutting the paper.

[0043] The second through hole 16 is formed after the paper is produced by laser cutting or using a punching tool and has a sharp border area 18 . The two through-openings 12 and 16 have double the same information spatially separated from each other, in each case an equilateral triangle in the exemplary embodiment shown in FIG. 1 . It should be understood that instead of triangles other more complex shapes may be used whose outlines eg form a string of numbers or a simple figure.

[...

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PUM

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Abstract

The invention relates to a security paper for producing security or value documents such as banknotes, identity cards and the similar comprising at least two through holes (12, 16). According to said invention, the first through hole (12) is embodied during paper production and comprises characteristic irregularities on the edge area thereof (14) whereas the second hole (16) is embodied after thepaper production by cutting out or punching and is provided with a sharply outlined edge area (18).

Description

technical field [0001] The present invention relates to a security paper for use in the manufacture of security or valuable documents, such as banknotes, identity cards and the like. Background technique [0002] For protection purposes, security papers or valuable documents are usually equipped with various authentication features to allow the identification of the security paper or valuable document to be authenticated and at the same time to prevent unauthorized copying. [0003] Within the scope of the present invention, the term "safety paper" is generally non-printed paper in quasi-endless form and subsequently further processed. The term "valuable document" refers to a document that has been completed for a specific purpose. In the present invention, valuable documents refer specifically to banknotes, shares, bonds, certificates, vouchers, cheques, valuable admission tickets, other paper that can be counterfeited (such as passports and other identity documents) and p...

Claims

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Application Information

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IPC IPC(8): B42D15/00
CPCB42D25/346D21H27/00B42D2035/33B42D2031/16B42D25/333B42D2035/32B42D2035/36D21H25/005B42D15/0013D21H21/40B42D25/29B42D25/43B42D25/40
Inventor 于尔根·拉克曼弗雷德·海姆安德烈亚斯·普雷奇
Owner GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH
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