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Method and apparatus for determining authenticity

A technology of authenticity and equipment, which is used in the inspection of the authenticity of banknotes, character and pattern recognition, instruments, etc., and can solve problems such as tapes that are difficult to distinguish between tapes and banknotes.

Inactive Publication Date: 2011-05-04
DE LA RUE INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While such counterfeits are often taped together and this can be detected, it can be difficult to distinguish between the tape used for the counterfeit and the tape used to repair damaged banknotes

Method used

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  • Method and apparatus for determining authenticity
  • Method and apparatus for determining authenticity
  • Method and apparatus for determining authenticity

Examples

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Embodiment Construction

[0033] figure 1 The substrate of a genuine banknote is shown (all stamps have been omitted), especially the watermark pattern associated with that particular substrate. Thus, the watermark pattern comprises a conventional watermark 1, such as a portrait, adjacent to the short edge 2 of the banknote, and a relief thread 3 extending over a short section of the banknote. In addition, the corners 4 of the banknote are provided with watermark areas and form two lines 5, 6 adjacent to the long edges of the banknote.

[0034] The function of the watermark portions 4, 5 and 6 is to reinforce the matrix, as described in more detail in WO-A-03 / 046282.

[0035] In this context, the term "watermark" refers to a watermark produced by known techniques: changing the grammage of the paper fibers so that in some areas the fibers have a higher grammage than the base paper layer, And in other areas have a lower grammage. When viewed in transmitted light, areas with a lower grammage are lighte...

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PUM

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Abstract

A method of determining the authenticity of a document of value provided with a watermark pattern, the method comprising determining whether the watermark pattern exhibits a discontinuity.

Description

technical field [0001] The present invention relates to documents for determining value - such as banknotes, fiscal checks, travelers checks, fiscal stamps, postal stamps, authenticity certificate of authenticity, brand protection article, bond, certificate or voucher - method and apparatus of authenticity. Background technique [0002] Recently, counterfeiters have started producing so-called composite banknotes. In such counterfeit banknotes, a part of the genuine banknote is cut out and replaced by a paper strip or the like, so that the cut-out part can be used to make another counterfeit or counterfeit banknote. There is therefore a need to detect such counterfeit banknotes, which has been difficult with conventional optical detection techniques. The difficulty stems from the similarity between the true substrate and the substrate used to make the substitute strip. While such counterfeits are often taped together and this can be detected, it can be difficult to distin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/00G07D7/20
CPCG07D7/0034G07D7/206
Inventor S·巴塔查尔吉A·格莱特H·克洛克E·J·布林德利
Owner DE LA RUE INT LTD