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WO1997001155A1 - Procede de verification des billets de banque, particulierement de dollars, et equipement pour la mise en ×uvre du procede - Google Patents

Procede de verification des billets de banque, particulierement de dollars, et equipement pour la mise en ×uvre du procede Download PDF

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Publication number
WO1997001155A1
WO1997001155A1 PCT/DK1996/000260 DK9600260W WO9701155A1 WO 1997001155 A1 WO1997001155 A1 WO 1997001155A1 DK 9600260 W DK9600260 W DK 9600260W WO 9701155 A1 WO9701155 A1 WO 9701155A1
Authority
WO
WIPO (PCT)
Prior art keywords
bill
light
rays
pencil
tested
Prior art date
Application number
PCT/DK1996/000260
Other languages
English (en)
Inventor
Hugo Jakobsen
Original Assignee
Bellcon I/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bellcon I/S filed Critical Bellcon I/S
Priority to AU61221/96A priority Critical patent/AU6122196A/en
Publication of WO1997001155A1 publication Critical patent/WO1997001155A1/fr

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation

Definitions

  • the present invention concerns a method for testing bank notes, especially dollar bills, by which a note to be tested is illuminated by a pencil of light rays from a halogen bulb.
  • the genuine dollar bill is made from fibres of cotton and flax bonded by polyvinyl alcohol.
  • Forged bills may be made of wood-based fibres or from different combina- tions of textile fibres, which generally deviates from the material structure of the real bill.
  • Claim 2 concerns preferred wavelength ranges for the different parts of light used by the method according to the invention.
  • the present invention also concerns an equipment for the implementation of the method according to the invention.
  • Claim 3 concerns such an equipment.
  • Claim 4 concerns a source for ultra-violet light for use in an equipment according to the invention.
  • Claim 5 concerns an electric circuit, which forms a part of an equipment according to the invention. and claim 6 concerns a signal emitter, which forms a part of an equipment according to the invention.
  • Fig. 1 shows in principle an equipment for testing of bank notes by the method according to the invention
  • Fig. 2 shows schematically an electric circuit to be used in an equipment for testing bank notes by the method according to the invention.
  • a bank note or bill 1 to be tested is illuminated by a halogen bulb 2. which is placed in the focus of a reflecting mirror 3, whereby a pencil of rays 4 is emitted.
  • the halogen bulb 2 is situated in relation to the bill 1 so that a center line 4' in the pencil of rays 4 form an angle v, preferably 45 °, with the bill 1. Between the halogen bulb 2 and the bill 1 there is mounted a planoconvex lens 5, that focuses the pencil of rays 4 on a spot 6 on the bill 1.
  • the lens 5 is designed in such a way and/or situated so that the spot 6 has a diameter of about 10° mm.
  • a first filter 7 for filtering off infrared light
  • a second filter 8 for filtering off visible light
  • a part ⁇ , of the pencil of rays 9 of UV-light hitting a bill is reflected by the bill with an angle v.
  • Another part ⁇ 2 of the pencil of rays 9 passes through the bill, and a third part ⁇ 3 is absorbed by the bill.
  • the portion of UV-light absorbed by the bill material creates a flourescence-effect in the visible light spectre.
  • This effect varies much as a consequence of the orgamc composition of the material.
  • the presence of non-organic compounds as bleaching agents cause a strongly varied flourescence effect.
  • the effect of floure- scence may be explained in this way: When organic/non-organic material is hit by UV-photons from the light source, loose electrons are excited away from the atomic nucleus. The electrons, however, quickly return to their original orbits, and by this return they emit light with a longer wavelength. The light is usually recovered in the visible blue-violet range.
  • the three light parts ⁇ supervise ⁇ 2 , and ⁇ -, are measured/registered in the following way.
  • a photodetecting device 10 is placed in such a way over a bill to be tested, so that it is hit by a pencil of rays 11 of light reflected from the bill.
  • a filter 12 which only allows light with a wavelength of ⁇ ⁇ 400 nm to pass.
  • Another photodetecting device 13 is situated in such a way under the bill, that it is hit by a pencil of rays 14 of light passing through the bill. Before the photodetecting device 13, as seen in the direction of the rays, there is mounted a filter 15, which only allows light with a wavelength ⁇ equal to about 340 nm to pass.
  • a third photodetecting device 16 is situated in such a way over the bill, that it is hit by a pencil of rays 17 emitted from the bill by the effect of flourescence.
  • a filter 18 which only allows light with a wavelength in the range 426 nm ⁇ ⁇ ⁇ 446 nm to pass.
  • the three photodetecting devices 10, 13, and 16 form part of an electric circuit, where they are connected to an amplifier each, 19, 20, and 21, respectively. These amplifiers transforms the incoming signals up to a desired level, and they are connected to a comparator each, 22, 23, and 24, respectively, in which the incoming signals are compared to a set value, ⁇ ,', ⁇ 2 ', and ⁇ 3 ' , respectively, whereby there is produced the answer(s) yes/no, over/under, or +/-.
  • the compara ⁇ tors 22 The compara ⁇ tors 22.
  • a logical circuit 25 which is connected to a signal emitter, which may consist of a first light emitter, for example a green one, that is lit if a tested bill is genuine, and another light emitter 27, for example a red one, that is lit if the tested bill is forged, and of a sound emitting device 28, which emits an audible signal, when a tested bill is forged.
  • a signal emitter which may consist of a first light emitter, for example a green one, that is lit if a tested bill is genuine, and another light emitter 27, for example a red one, that is lit if the tested bill is forged, and of a sound emitting device 28, which emits an audible signal, when a tested bill is forged.
  • the equipment as shown and described above is only an example of equipment, which may be used for implementing the method according to the invention. Within the scope of the invention other embodiments may be envisioned.
  • the signal emitter may be made in another way.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Un billet (1) d'un ou plusieurs dollars à vérifier est illuminé par un pinceau de rayons (9) de lumière ultraviolette ayant une incidence de 45°. Une première composante Ζ1 de la lumière réfléchie par le billet, et caractérisée par une longueur d'onde μ < 400 nm, est détectée dans un dispositif photodétecteur (10). Une deuxième composante Ζ2 de la lumière traversant le billet, et caractérisée par une longueur d'onde μ = 340 nm environ, est détectée dans un dispositif photodétecteur (13), et une troisième composante Ζ3 de la lumière émise par le billet par effet de fluorescence, et caractérisée par une longueur d'onde comprise dans la plage 426 < μ < 446 nm, est détectée dans un dispositif photodétecteur (16). Un circuit électrique compare les trois composantes de lumière Ζ1, Ζ2 et Ζ3 à des valeurs préétablies correspondant à un billet authentique. En cas de non-concordance entre l'une au moins des valeurs mesurées et les valeurs préétablies, il y a émission d'un signal indiquant que le billet est un faux. Ce procédé permet de constater avec certitude les éventuelles différences organiques de matériau de fabrication entre le billet testé et un billet authentique, et donc de prouver si le billet testé est authentique ou faux.
PCT/DK1996/000260 1995-06-20 1996-06-18 Procede de verification des billets de banque, particulierement de dollars, et equipement pour la mise en ×uvre du procede WO1997001155A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU61221/96A AU6122196A (en) 1995-06-20 1996-06-18 Method for testing of bank notes, especially dollar bills, and equipment for the implementation of the method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK69995 1995-06-20
DK0699/95 1995-06-20

Publications (1)

Publication Number Publication Date
WO1997001155A1 true WO1997001155A1 (fr) 1997-01-09

Family

ID=8096526

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1996/000260 WO1997001155A1 (fr) 1995-06-20 1996-06-18 Procede de verification des billets de banque, particulierement de dollars, et equipement pour la mise en ×uvre du procede

Country Status (2)

Country Link
AU (1) AU6122196A (fr)
WO (1) WO1997001155A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998035323A3 (fr) * 1997-02-11 1998-10-22 Cummins Allison Corp Procede et appareil permettant d'authentifier le papier-monnaie et de le distinguer des contrefaçons
GB2373324A (en) * 2000-10-13 2002-09-18 Bank Of England Detection of printing and coating media
EP1447776A1 (fr) * 2002-12-18 2004-08-18 Giesecke & Devrient GmbH Dispositif pour vérifier l'authenticité de billets de banque
GB2403333A (en) * 2003-06-25 2004-12-29 Int Currency Tech Banknote validator using UV light
US6915893B2 (en) 2001-04-18 2005-07-12 Cummins-Alliston Corp. Method and apparatus for discriminating and counting documents
AT503961B1 (de) * 2006-07-04 2008-02-15 Arc Seibersdorf Res Gmbh Verfahren und einrichtung zur prüfung von gegenständen
US7536046B2 (en) 1990-02-05 2009-05-19 Cummins-Allison Corp. Method and apparatus for currency discrimination and counting
CN105574984A (zh) * 2014-10-15 2016-05-11 聚龙股份有限公司 一种用于纸币处理中m码的荧光检测装置和方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE454023B (sv) * 1978-10-10 1988-03-21 Sodeco Compteurs De Geneve Forfarande for optisk serskiljning av provobjekt
SE455547B (sv) * 1982-06-29 1988-07-18 Bergstroem Arne Apparat for ekthetskontroll av sedlar
EP0537431A1 (fr) * 1991-10-14 1993-04-21 Mars, Incorporated Dispositif pour la reconnaissance optique de documents
WO1994016412A1 (fr) * 1993-01-09 1994-07-21 Mars, Incorporated Detection de contrefaçons

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE454023B (sv) * 1978-10-10 1988-03-21 Sodeco Compteurs De Geneve Forfarande for optisk serskiljning av provobjekt
SE455547B (sv) * 1982-06-29 1988-07-18 Bergstroem Arne Apparat for ekthetskontroll av sedlar
EP0537431A1 (fr) * 1991-10-14 1993-04-21 Mars, Incorporated Dispositif pour la reconnaissance optique de documents
WO1994016412A1 (fr) * 1993-01-09 1994-07-21 Mars, Incorporated Detection de contrefaçons

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7536046B2 (en) 1990-02-05 2009-05-19 Cummins-Allison Corp. Method and apparatus for currency discrimination and counting
WO1998035323A3 (fr) * 1997-02-11 1998-10-22 Cummins Allison Corp Procede et appareil permettant d'authentifier le papier-monnaie et de le distinguer des contrefaçons
GB2373324A (en) * 2000-10-13 2002-09-18 Bank Of England Detection of printing and coating media
GB2373324B (en) * 2000-10-13 2004-05-19 Bank Of England Detection of printing and coating media
US6915893B2 (en) 2001-04-18 2005-07-12 Cummins-Alliston Corp. Method and apparatus for discriminating and counting documents
EP1447776A1 (fr) * 2002-12-18 2004-08-18 Giesecke & Devrient GmbH Dispositif pour vérifier l'authenticité de billets de banque
GB2403333A (en) * 2003-06-25 2004-12-29 Int Currency Tech Banknote validator using UV light
GB2403333B (en) * 2003-06-25 2006-09-13 Int Currency Tech Banknote acceptor
AT503961B1 (de) * 2006-07-04 2008-02-15 Arc Seibersdorf Res Gmbh Verfahren und einrichtung zur prüfung von gegenständen
CN105574984A (zh) * 2014-10-15 2016-05-11 聚龙股份有限公司 一种用于纸币处理中m码的荧光检测装置和方法

Also Published As

Publication number Publication date
AU6122196A (en) 1997-01-22

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