EP1004097A1 - Structure d'un element de securite a effet optique de diffraction, et dispositif pour le controle de tels elements - Google Patents

Structure d'un element de securite a effet optique de diffraction, et dispositif pour le controle de tels elements

Info

Publication number
EP1004097A1
EP1004097A1 EP98932022A EP98932022A EP1004097A1 EP 1004097 A1 EP1004097 A1 EP 1004097A1 EP 98932022 A EP98932022 A EP 98932022A EP 98932022 A EP98932022 A EP 98932022A EP 1004097 A1 EP1004097 A1 EP 1004097A1
Authority
EP
European Patent Office
Prior art keywords
document
structure according
zones
electrodes
scanner
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
EP98932022A
Other languages
German (de)
English (en)
Other versions
EP1004097B1 (fr
Inventor
Frank Puttkammer
Torsten Wolf
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.)
WHD Elektronische Prueftechnik GmbH
Original Assignee
WHD Elektronische Prueftechnik GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7838710&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1004097(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by WHD Elektronische Prueftechnik GmbH filed Critical WHD Elektronische Prueftechnik GmbH
Publication of EP1004097A1 publication Critical patent/EP1004097A1/fr
Application granted granted Critical
Publication of EP1004097B1 publication Critical patent/EP1004097B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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
    • G07D7/02—Testing electrical properties of the materials thereof
    • G07D7/026—Testing electrical properties of the materials thereof using capacitive sensors
    • 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
    • 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
    • G07D7/003—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 security elements
    • G07D7/0032—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 security elements using holograms

Definitions

  • the invention relates to the construction of diffractive optical security elements
  • test object can be positioned very precisely.
  • the entire test process takes so long that these test methods are not used in high-speed processing machines.
  • EP 0 042 946 describes a device for
  • the object of the invention is to eliminate the disadvantages of the prior art and a
  • the device is said to be used both in document processing machines and in manual testing devices
  • a quick testability provides a further security level at
  • Diffractive optically effective elements consist among other things of a metallized layer.
  • This metallization layer is electrically conductive. According to the layer thickness changes
  • the diffractive optically active element has according to the invention
  • a discontinuous metallization layer contains segments
  • the device has a capacitive scanner.
  • This scanner consists of
  • the scanner is in one
  • test device Activate the test device according to the invention.
  • a sensor carrier is preferably used for measurement errors. This sensor carrier takes them all
  • Transmitting electrodes with electrical energy are delayed by means of control electronics
  • control electronics contains as
  • the main components in addition to the power supply are a multiplexer and an oscillator
  • the signal pattern depends on the
  • diffractive elements have a discontinuous metallization layer, so
  • Reference signal images provide a classifying signal for further processing.
  • Evaluation electronics carries.
  • test facility located within document processing machines,
  • the transmitting and receiving electrodes is pressed.
  • the received signals are by means of
  • Copiers, optical image scanners or fax machines are similar.
  • Fig. 1 shows a schematic representation of a document with OVD
  • Fig. 2 shows a schematic representation of a document with OVD
  • Fig. 3 shows a schematic representation of a document with OVD
  • Fig. 4 shows a schematic representation of a document with OVD
  • Fig. 5 shows a schematic representation of a document with OVD
  • Fig. 7 schematic representation of the scanner with a variety of transmit and
  • Fig. 8 is a schematic representation of the scanner with a transmit and a
  • FIG. 9 schematic representation of the scanner with a variety of transmit and
  • Fig. 10 schematic representation of the scanner and one to be tested
  • FIG. 11 shows a schematic section through an OVD with demetalized segments
  • FIGS. 1 to 5 each show documents
  • FIG. 1 shows the schematic structure of an OVD 1 with a metallization layer 2
  • the metallization layer 2 has a demetallized zone 3.
  • the metallization layer 2 has a demetallized zone 3. In top view
  • the demetallized zone 3 has the shape of a meander.
  • Zone 3 in the form of a meander is larger than the smallest distance between two electrodes.
  • the capacitive scanner consists of a large number of adjacent ones
  • Fig. 2 shows the schematic structure of an OVD, in which alternately metallized
  • zones 7, 8 which are strip-shaped in plan view run parallel or
  • the distance between two zones of the same electrical conductivity is between 0.2 and
  • Document transport direction are alternately metallized strip-shaped zones 7 and
  • demetallized strip-shaped zones arranged.
  • the metallized zones 7 are by a
  • Strip-shaped demetalized zone 9 running perpendicular to it is interrupted. 5 shows a document with several OVD's. The targeted combination
  • FIG. 6 shows the block diagram of a test device according to the invention, consisting of a
  • Control electronics a capacitive scanner 4 and evaluation electronics.
  • Control electronics essentially contain one in addition to the power supply
  • Demultiplexer 10 an oscillator 11 for providing the energy for the transmission electrodes
  • the evaluation electronics mainly consists of a power supply, a
  • Amplifier 13 a demodulator 14, a comparator 15, a microprocessor 16 with
  • the transmitter and receiver electrodes are cast in a sensor carrier. This
  • strip-shaped receiving electrode runs across the document feed direction.
  • Transmitting electrodes are arranged parallel to the receiving electrode. The distance one
  • Transmitting electrode to receiving electrode becomes electrical by the document typical
  • Transmitting electrodes are given the ability to work capacitively in the longitudinal axis
  • Scanners 4 capture several electrically conductive features simultaneously. The one with this
  • the arrangement achievable resolution depends on the number of transmitting electrodes used.
  • the resolution is at one scannable point per mm
  • the transmission electrodes are controlled in succession by a multiplexer 10.
  • FIG. 7 shows the schematic representation of the scanner 4 with a multiplicity of transmission electrodes
  • Fig. 6 block diagram shown.
  • Scanners with a transmitting electrode 17 and a plurality of receiving electrodes 18.
  • the signals of the receiving electrodes 18 are processed by means of multiplexers.
  • the further evaluation electronics consisting of power supply, an amplifier, a
  • Demodulator a comparator, a microprocessor with memory and filters for
  • Fig. 9 shows the schematic representation of a further embodiment of the capacitive
  • Receiving electrodes 20 These are alternately arranged in a row.
  • Evaluation signals of the receiving electrodes 20 by means of multiplex or demultiplexing
  • FIG. 10 shows a schematic illustration of the capacitive scanner 4 and one to
  • the OVD contains partial metallizations 21
  • FIG. 11 shows a schematic section through an OVD with a carrier layer 23 and one
  • the partially metallic layer 24 includes several
  • demetallized segments 25 In FIG. 12 the associated evaluation signal is in one
  • FIG. 13 shows a schematic section through an OVD with a carrier layer 26 and one
  • discontinuous metallization layer 27 The discontinuous metallization
  • Layer 27 contains segments 28, 29, 30, 31, 32 with different electrical
  • the associated evaluation signal is in a voltage-time
  • the diffractive optical security element also other electrically conductive
  • Inspection characteristics e.g. an electrically conductive security thread or coding

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Holo Graphy (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Telescopes (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

L'invention concerne la constitution d'éléments de sécurité à effet optique de diffraction, et un dispositif utilisé pour le contrôle de tels éléments. L'utilisation d'hologrammes et d'autres éléments de sécurité à effet optique de diffraction pour la protection de documents et d'autres papiers de valeur, ainsi que des billets de banque contre des falsifications doit être actuellement de plus en plus fréquente. L'élément à effet de diffraction optique comporte, selon l'invention, une couche de métallisation discontinue et/ou des couches métalliques partielles et/ou des zones de couches métalliques dans différents plans, qui représentent un codage électrique, conforme à l'objectif, d'informations. Le dispositif comporte un explorateur à fonctionnement capacitif. Cet explorateur est constitué d'une pluralité d'électrodes d'émission placées les unes à côté des autres et d'une électrode de réception s'étendant parallèlement à cet agencement d'électrodes d'émission.
EP98932022A 1997-08-12 1998-04-24 Structure d'un element de securite a effet optique de diffraction, et dispositif pour le controle de tels elements Revoked EP1004097B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19734855 1997-08-12
DE19734855A DE19734855B4 (de) 1997-08-12 1997-08-12 Vorrichtung zur Prüfung beugungsoptisch wirksamer Sicherheitselemente
PCT/DE1998/001178 WO1999009527A1 (fr) 1997-08-12 1998-04-24 Constitution d'elements de securite a effet optique de diffraction, et dispositif pour le controle de tels elements

Publications (2)

Publication Number Publication Date
EP1004097A1 true EP1004097A1 (fr) 2000-05-31
EP1004097B1 EP1004097B1 (fr) 2002-01-16

Family

ID=7838710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98932022A Revoked EP1004097B1 (fr) 1997-08-12 1998-04-24 Structure d'un element de securite a effet optique de diffraction, et dispositif pour le controle de tels elements

Country Status (22)

Country Link
EP (1) EP1004097B1 (fr)
JP (1) JP2003517646A (fr)
KR (1) KR20010022778A (fr)
CN (1) CN1265761A (fr)
AT (1) ATE212143T1 (fr)
AU (1) AU8208198A (fr)
BG (1) BG64293B1 (fr)
BR (1) BR9811153A (fr)
CA (1) CA2300961A1 (fr)
DE (2) DE19734855B4 (fr)
DK (1) DK1004097T3 (fr)
ES (1) ES2172157T3 (fr)
HU (1) HUP0003358A3 (fr)
ID (1) ID25447A (fr)
NO (1) NO20000615L (fr)
PL (1) PL187652B1 (fr)
PT (1) PT1004097E (fr)
SA (1) SA98190497B1 (fr)
SK (1) SK1782000A3 (fr)
TR (1) TR200000651T2 (fr)
UA (1) UA50838C2 (fr)
WO (1) WO1999009527A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812811A1 (de) 1997-08-12 1999-09-23 Whd Elektron Prueftech Gmbh Aufbau von Sicherheitselementen für Dokumente und Vorrichtungen zur Prüfung von Dokumenten mit derartigen Sicherheitselementen sowie Verfahren zur Anwendung dieser Sicherheitselemente und Vorrichtungen
EP1168253A1 (fr) 2000-06-28 2002-01-02 Sicpa Holding S.A. Utilisation de matériel de communication et méthode pour authentifier un objet, spécialement des documents, en particulier des documents de sécurité, matériel de communication pour authentifier des objets, et objets à authentifier par le matériel de communication
EP1179811B1 (fr) * 2000-08-11 2008-10-15 European Central Bank Document de sécurité et son procédé de fabrication
FR2828316A1 (fr) * 2001-08-02 2003-02-07 Sequoias Authentification d'un document par superposition ou combinaison de niveaux de securisation
DE10248954A1 (de) * 2002-10-21 2004-04-29 Giesecke & Devrient Gmbh Sicherheitselement für Ausweis- und Wertdokumente
DE102004044458B4 (de) * 2004-09-15 2010-01-07 Ovd Kinegram Ag Sicherheitsdokument
CN100511262C (zh) * 2006-09-07 2009-07-08 中国科学院长春光学精密机械与物理研究所 一种光学防伪无损检测装置
CN104049003A (zh) * 2014-06-10 2014-09-17 中国人民银行印制科学技术研究所 一种阵列电容式感应传感器及有价证券防伪检测方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1474903B2 (de) * 1965-12-11 1972-09-07 Thurnberger, Paul, Munderfing (Osterreich) Verfahren zur pruefung der echtheit von banknoten
DE2747156A1 (de) 1977-10-20 1979-04-26 Siemens Ag Verfahren und pruefgeraet zur echtheitspruefung holografisch abgesicherter identitaetskarten
US4255652A (en) * 1979-01-31 1981-03-10 Coulter Systems Corporation High speed electrically responsive indicia detecting apparatus and method
DE2919649A1 (de) * 1979-05-16 1980-11-20 Bbc Brown Boveri & Cie Sicherheitspapier
EP0042946A3 (fr) 1980-06-25 1982-06-02 International Business Machines Corporation Appareil de lecture holographique pour générer des formes de vérification et application dudit appareil à la lecture d'étiquettes codées à barres
FR2528970B1 (fr) * 1982-06-22 1985-09-27 Flonic Sa Dispositif de verification d'epaisseur de matieres dielectriques en feuille
US4576439A (en) * 1982-09-15 1986-03-18 Rca Corporation Reflective diffractive authenticating device
US4913504A (en) * 1982-11-08 1990-04-03 American Bank Note Holographics, Inc. Documents or like articles bearing holograms
NO165697C (no) * 1988-03-10 1991-03-20 Inter Marketing Oy Ab Sensor for ekthetskontroll av sikkerhetspapir.
EP0360969B1 (fr) * 1988-09-30 1993-12-15 Landis & Gyr Business Support AG Elément de diffraction
DE4002979A1 (de) * 1990-02-01 1991-08-08 Gao Ges Automation Org Wertpapier mit optisch variablem sicherheitselement
GB2250474B (en) * 1990-12-04 1994-04-20 Portals Ltd Security articles
EP0543058A1 (fr) * 1991-11-21 1993-05-26 Klaus Henning Dipl.-Ing. Steiger Détecteur de fausse monnaie
DE4423295C2 (de) * 1994-07-02 1996-09-19 Kurz Leonhard Fa Beugungsoptisch wirksame Strukturanordnung
DE19512921A1 (de) * 1995-03-30 1996-10-02 Lfp Elektronische Spezialsiche Einrichtung zur Prüfung von Sicherheitsdokumenten
DE19548532A1 (de) * 1995-12-22 1997-06-26 Giesecke & Devrient Gmbh Verfahren zur Detektion eines elektrisch leitfähigen Elements in einem Dokument
DE19718916A1 (de) * 1997-04-25 1998-10-29 Whd Elektron Prueftech Gmbh Anwendung und Verfahren zur Prüfung von Kokumenten mit beugungsoptisch wirksamen Sicherheitsschichten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9909527A1 *

Also Published As

Publication number Publication date
DE19734855B4 (de) 2005-09-08
HUP0003358A2 (hu) 2001-02-28
PL338473A1 (en) 2000-11-06
DE19734855A1 (de) 1999-02-18
TR200000651T2 (tr) 2000-08-21
UA50838C2 (uk) 2002-11-15
BG64293B1 (bg) 2004-08-31
BG104143A (en) 2000-06-30
JP2003517646A (ja) 2003-05-27
CA2300961A1 (fr) 1999-02-25
SK1782000A3 (en) 2000-10-09
PL187652B1 (pl) 2004-08-31
ATE212143T1 (de) 2002-02-15
CN1265761A (zh) 2000-09-06
SA98190497B1 (ar) 2006-08-14
EP1004097B1 (fr) 2002-01-16
PT1004097E (pt) 2002-07-31
ES2172157T3 (es) 2002-09-16
ID25447A (id) 2000-10-05
HUP0003358A3 (en) 2002-11-28
NO20000615L (no) 2000-04-07
BR9811153A (pt) 2000-07-25
NO20000615D0 (no) 2000-02-08
AU8208198A (en) 1999-03-08
DE59802653D1 (de) 2002-02-21
WO1999009527A1 (fr) 1999-02-25
DK1004097T3 (da) 2002-05-06
KR20010022778A (ko) 2001-03-26

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