FR2423773A1 - Procede et dispositif de detection d'une zone fluorescente sur une feuille de papier - Google Patents

Procede et dispositif de detection d'une zone fluorescente sur une feuille de papier

Info

Publication number
FR2423773A1
FR2423773A1 FR7909963A FR7909963A FR2423773A1 FR 2423773 A1 FR2423773 A1 FR 2423773A1 FR 7909963 A FR7909963 A FR 7909963A FR 7909963 A FR7909963 A FR 7909963A FR 2423773 A1 FR2423773 A1 FR 2423773A1
Authority
FR
France
Prior art keywords
sheet
paper
detection
ultraviolet
level
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7909963A
Other languages
English (en)
Other versions
FR2423773B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Industrielle Radioelectrique SA
Original Assignee
Compagnie Industrielle Radioelectrique SA
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 Compagnie Industrielle Radioelectrique SA filed Critical Compagnie Industrielle Radioelectrique SA
Publication of FR2423773A1 publication Critical patent/FR2423773A1/fr
Application granted granted Critical
Publication of FR2423773B1 publication Critical patent/FR2423773B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Procédé de détection, sur une feuille de papier, d'une zone devenant fluorescente lorsqu'elle est exposée à un rayonnement ultraviolet, selon lequel on éclaire la feuille 11 défilant devant un détecteur 15 au moyen d'une source de lumière ultraviolette 1 modulée au moyen d'une fréquence comprise entre 1 et 10 KHz, capte d'une part le rayonnement de fluorescence modulé, l'amplifie et le démodule au moyen d'un circuit d'amplification 20 et de démodulation 21 et mesure d'autre part l'intensité de la source ultraviolette au moyen d'un élément photoélectrique 30 associé à un circuit de détection et de démodulation 31 délivrant un second signal. Ce second signal est utilisé pour réguler le niveau du signal de sortie correspondant au rayonnement de fluorescence par régulation du niveau d'au moins un trigger 23, 24, 25 auquel est appliqué le signal de sortie. procédé est destiné, en particulier, à l'authentification de titres et documents analogues.
FR7909963A 1978-04-18 1979-04-12 Procede et dispositif de detection d'une zone fluorescente sur une feuille de papier Granted FR2423773A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH413178A CH622369A5 (fr) 1978-04-18 1978-04-18

Publications (2)

Publication Number Publication Date
FR2423773A1 true FR2423773A1 (fr) 1979-11-16
FR2423773B1 FR2423773B1 (fr) 1984-02-03

Family

ID=4270406

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909963A Granted FR2423773A1 (fr) 1978-04-18 1979-04-12 Procede et dispositif de detection d'une zone fluorescente sur une feuille de papier

Country Status (8)

Country Link
US (1) US4275299A (fr)
JP (1) JPS54140425A (fr)
CH (1) CH622369A5 (fr)
DE (1) DE2915423A1 (fr)
ES (1) ES8103413A1 (fr)
FR (1) FR2423773A1 (fr)
GB (1) GB2018984B (fr)
IT (1) IT1112233B (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038602C2 (de) * 1980-10-13 1986-09-25 COPYTEX GmbH Sicherheitssysteme, 7730 Villingen-Schwenningen Verfahren zum Erkennen der Echtheit eines Datenträgers
DE3127195A1 (de) * 1981-07-07 1983-04-21 Libbey-Owens-Ford Co., Toledo, Ohio Verfahren und vorrichtung zur feststellung des vorhandenseins von spuren fluoreszierender, auf einer oberflaeche von in einer bestimmten richtung orientierten scheibenfoermigen gegenstaenden waehrend ihrer formung niedergeschlagener materialien
FR2509858B1 (fr) * 1981-07-15 1985-12-27 Libbey Owens Ford Co Procede et dispositif de controle de la presence de traces de matiere fluorescente sur une plaque de verre
GB8311795D0 (en) * 1983-04-29 1983-06-02 De La Rue Syst Detecting luminescent security features
GB2217833A (en) * 1988-04-30 1989-11-01 Cranfield Inst Of Tech Registration mark detection system
GB2219078B (en) * 1988-05-06 1992-08-26 Gersan Ets Identifying the position of objects or zones
GB2219080B (en) * 1988-05-06 1992-11-04 Gersan Ets Identifying gemstones
US5206699A (en) * 1988-05-06 1993-04-27 Gersan Establishment Sensing a narrow frequency band of radiation and gemstones
FR2660462B1 (fr) * 1990-03-30 1992-07-31 Ixea Procede et dispositif de lecture de codes invisibles.
US5418855A (en) * 1993-09-27 1995-05-23 Angstrom Technologies, Inc. Authentication system and method
US5918960A (en) * 1994-01-04 1999-07-06 Mars Incorporated Detection of counterfeit objects, for instance counterfeit banknotes
CN1073251C (zh) * 1994-01-04 2001-10-17 玛尔斯有限公司 对伪造品,例如伪钞的检验装置及其检验方法
GB2287533B (en) * 1994-03-08 1998-09-16 Hitachi Maxell Fluorescent detecting apparatus and method
US5932139A (en) 1994-03-17 1999-08-03 Hitachi Maxell, Ltd. Fluorescent substance, fluorescent composition, fluorescent mark carrier and optical reader thereof
US5548106A (en) * 1994-08-30 1996-08-20 Angstrom Technologies, Inc. Methods and apparatus for authenticating data storage articles
US6264107B1 (en) 1997-09-26 2001-07-24 Iomega Corporation Latent illuminance discrimination marker system for authenticating articles
US6181662B1 (en) 1997-09-26 2001-01-30 Iomega Corporation Latent irradiance discrimination method and marker system for cartridgeless data storage disks
US6359745B1 (en) 1997-09-26 2002-03-19 Iomega Corporation Latent illuminance discrimination marker system for data storage cartridges
US6201662B1 (en) 1998-09-25 2001-03-13 Iomega Corporation Latent illuminance discrimination marker with reflective layer for data storage cartridges
US6091563A (en) * 1997-09-26 2000-07-18 Iomega Corporation Latent illuminance discrimination marker system for data storage cartridges
US6155491A (en) * 1998-05-29 2000-12-05 Welch Allyn Data Collection, Inc. Lottery game ticket processing apparatus
DE19901702A1 (de) * 1999-01-18 2000-07-20 Giesecke & Devrient Gmbh Verfahren zur Überprüfung des Zustandes einer Vorrichtung zur Prüfung von Blattgut
US20030112423A1 (en) * 2000-04-24 2003-06-19 Rakesh Vig On-line verification of an authentication mark applied to products or product packaging
PT1237128E (pt) 2001-03-01 2012-10-30 Sicpa Holding Sa Detector de características de luminescência melhorado
CA2354202A1 (fr) * 2001-07-26 2003-01-26 Deborah Jean Henry Determination par fluorescence de la teneur en cellules pierreuses
US20080224034A1 (en) * 2005-07-06 2008-09-18 Devlin Stuart Wollstein System and Method for Locating One or More Persons

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736428A (en) * 1958-03-27 1973-05-29 Thompson Ramo Wooldridge Inc Detecting with ultraviolet light
US3444517A (en) * 1965-03-09 1969-05-13 Control Data Corp Optical reading machine and specially prepared documents therefor
US3614430A (en) * 1969-03-10 1971-10-19 Pitney Bowes Alpex Fluorescent-ink-imprinted coded document and method and apparatus for use in connection therewith
US3751667A (en) * 1971-08-10 1973-08-07 G Quittner Radiation path continuity transducer of high pass frequency
US3918812A (en) * 1973-05-07 1975-11-11 Us Energy Diagnoses of disease states by fluorescent measurements utilizing scanning laser beams
US3854050A (en) * 1973-09-11 1974-12-10 Department Of Health Education High precision fluorometer for measuring enzymatic substrates in tissue
US3935922A (en) * 1974-07-16 1976-02-03 Lear Siegler, Inc. Vehicle guidance mechanism
US4158778A (en) * 1978-03-01 1979-06-19 Armstrong Cork Company Optoelectronic scanning device

Also Published As

Publication number Publication date
IT7921742A0 (it) 1979-04-10
FR2423773B1 (fr) 1984-02-03
IT1112233B (it) 1986-01-13
CH622369A5 (fr) 1981-03-31
JPS54140425A (en) 1979-10-31
DE2915423A1 (de) 1979-10-31
US4275299A (en) 1981-06-23
GB2018984B (en) 1982-11-10
ES489091A0 (es) 1981-02-16
GB2018984A (en) 1979-10-24
ES8103413A1 (es) 1981-02-16

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Legal Events

Date Code Title Description
ST Notification of lapse