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Document of value, method of manufacture and method of detecting soil or wear

A technology of bills and bills, applied in the application field, can solve the problems of reducing the security of banknotes and negatively affecting the public image of issuing banks

Inactive Publication Date: 2014-04-23
DE LA RUE INT LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reduces the security of the banknote and negatively affects the public image of the issuing bank

Method used

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  • Document of value, method of manufacture and method of detecting soil or wear
  • Document of value, method of manufacture and method of detecting soil or wear
  • Document of value, method of manufacture and method of detecting soil or wear

Examples

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Embodiment Construction

[0084] Different embodiments of documents and methods according to the invention are now described. As noted above, the invention is particularly useful for currency, particularly banknotes, but can similarly be used for any other type of document of value, including cheques, certificates and identity documents (eg passports).

[0085] The soil and wear grades of banknotes are inherently linked since they generally increase in lockstep. That being the case, measurement of a document's level of contamination will also provide an indication of its level of wear, and vice versa.

[0086] Such as figure 1 As shown, typical stains found on banknotes mainly reflect at a wavelength of 550 nm, ie have a yellowish tinge. Thus, soil buildup on the banknote alters the color that will be detected from the surface of the banknote. However, stains and / or wear will also affect certain other properties of the document, so instead of colour, any property of the document that will be altered...

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Abstract

A method of manufacturing a soil or wear test feature on a document of value is provided. The method comprises designating an area of the document of value for soil or wear testing and measuring an optical characteristic which is affected by the presence of soil or wear of the designated area on the document of value, or of the same area on an identical document of value. The measured optical characteristic is encoded to generate corresponding optical characteristic data and the encoded optical characteristic data is associated with the document of value by means of a machine readable element provided on the document of value. Also provided is a method of detecting soiling or wear of a document of value, comprising measuring an optical characteristic which is affected by the presence of soil or wear of a designated area on the document of value; reading data from a machine readable element provided on the document of value to retrieve encoded optical characteristic data generated from previous measurement of the optical characteristic of the designated area, or of the same area on an identical document of value; and comparing the measured optical characteristic with the encoded optical characteristic to identify any difference therebetween, a difference being indicative of soiling or wear of the document of value.

Description

technical field [0001] The present invention relates to documents of value, such as currency, banknotes, identification documents, passports and certificates, and more particularly to the detection of soiling of such documents or wear to determine if the ticket is still fit for use. The following description will focus on the application of the invention to banknotes, but it will be understood that the same concept can be extended to any document of value. More specifically, the present invention provides a method of producing a soil or wear test feature on a document of value and a method of detecting soil or wear on a document of value. Background technique [0002] Banknote circulation includes the following elements: [0003] a) Issuance of new banknotes into circulation via the banking system; [0004] b) Consumers use banknotes for transactions and banknotes are eventually returned to the banking system; [0005] c) The central bank and / or commercial banks classify...

Claims

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Application Information

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IPC IPC(8): G07D7/18G07F7/08G07D7/182
CPCG07D7/18G07D7/181G07D7/004G07D7/187
Inventor M·伍德福德
Owner DE LA RUE INT LTD
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