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EP0978108A2 - Application and method for checking documents with effective optical diffraction security layer - Google Patents

Application and method for checking documents with effective optical diffraction security layer

Info

Publication number
EP0978108A2
EP0978108A2 EP98932026A EP98932026A EP0978108A2 EP 0978108 A2 EP0978108 A2 EP 0978108A2 EP 98932026 A EP98932026 A EP 98932026A EP 98932026 A EP98932026 A EP 98932026A EP 0978108 A2 EP0978108 A2 EP 0978108A2
Authority
EP
European Patent Office
Prior art keywords
layers
application
authenticity
documents
checking
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
EP98932026A
Other languages
German (de)
French (fr)
Other versions
EP0978108B1 (en
Inventor
Frank Puttkammer
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
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Application filed by WHD Elektronische Prueftechnik GmbH filed Critical WHD Elektronische Prueftechnik GmbH
Publication of EP0978108A2 publication Critical patent/EP0978108A2/en
Application granted granted Critical
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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
    • G07D7/003—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 an application and a method for checking documents.
  • Test methods are not used in high-speed processing machines.
  • a test for example of banknotes with a hologram authenticity feature, is within one
  • diffraction-optically effective layers consist of a metallized layer. This metallization layer is electrically conductive. The electrical conductivity changes according to the layer thickness.
  • the diffraction-optically effective layer has a discontinuous metallization layer and / or partially metallic layers and / or zones of metallic layers in different planes.
  • Various measuring methods are known which demonstrate electrical conductivity. In practice, the contactless, capacitive measuring method has proven to be practical.
  • the capacitive coupling between the transmitter and receiver and the transmission of energy between the transmitter and receiver are carried out by Bridging an electromagnetic field exploited by electrically conductive safety materials.
  • Subsequent evaluation electronics compare the signal image of the test object with the corresponding reference signals. The comparison provides a classifying signal for further processing. Accordingly, for example, a document recognized as a false certificate could be sorted out by stopping the test device.
  • the signal pattern depends on the structure of the metallized layer of the diffraction-optical layer. If the diffraction-optically active layers have a discontinuous metallization layer, then several segments of the metallization layer have different electrical conductivities. Practice has shown that these different conductivities affect the signal pattern.
  • additional authenticity features into demetalized segments within discontinuous metallization layers and / or partially metallic layers and / or between zones of metallic layers in different levels, these features and the electrical conductivity can be checked at the same time.
  • an authenticity signal of another sensor for authenticity determination is logically linked to the sensor for measuring the electrical conductivity.
  • At the output of the evaluation electronics there is a signal that classifies the diffraction-optically effective layer for further processing.
  • This additional authenticity feature has fluorescent, phosphorescent or light absorbing properties or differs from its surroundings by different magnetic properties. Accordingly, an optical or magnetic sensor is used.
  • a sensor carrier is preferably used to reduce detection and measurement errors used. This sensor carrier takes all sensors for the detection of authenticity features
  • the sensor carrier is compact
  • Test facility is located inside processing machines, so none
  • Fig. 1 shows a schematic section through a processing machine
  • 2a shows a schematic section through a hologram with demetalized segments
  • FIG. 3 a schematic section through a hologram with discontinuous
  • FIG. 4a shows a schematic section through a hologram with a UV authenticity feature Fig. 4b voltage-time diagram of the evaluation signal of the electrical
  • the test method according to the invention provides that the corresponding sensors are installed in banknote counting machines at suitable positions.
  • the sensors for detecting the electrical conductivity are designed such that the entire banknote path width is monitored, so that the sensor can check the banknotes in a position-neutral manner.
  • Optical or mechanical sensors detect the presence of a banknote and supply a reference signal for the time control of the test device 4.
  • the sensors for checking the authenticity of the hologram are also activated thereby.
  • the position of the hologram on the banknote can be determined by recording the entire time window from the beginning of the banknote to the end thereof. 1 shows how the test device 4 is arranged in the transport path of the banknote.
  • the banknote counting machine includes a feed wheel 1, transport wheels 2, a banknote guiding device 3 and a checking device 4.
  • FIG. 2a shows a schematic section through a hologram with a carrier layer 11 and a partially metallic layer 12.
  • the partially metallic layer 12 contains several demetallized segments 13.
  • the associated evaluation signal is shown in FIG. 2b in a voltage-time diagram.
  • 3 a shows a schematic section through a hologram with a carrier layer 11 and a discontinuous metallization layer 14.
  • the discontinuous Metallization layer 14 contains segments 15, 16, 17, 18, 19 with different electrical conductivity.
  • 3b shows the associated evaluation signal in a voltage-time diagram.
  • FIG. 4a shows a schematic section through a hologram with a carrier layer 11 and a discontinuous metallization layer 20.
  • the discontinuous metallization layer 20 contains demetallized segments 21 and additional authenticity checking features. These authenticity features are fluorescent colors 22, which are excited during the test by means of UV light and detected by means of photosensors.
  • the additional authenticity check features are preferably located within the demetallized segments 21.
  • FIG. 4b the associated evaluation signal of the capacitively operating sensor that checks the electrical conductivity is shown in a voltage-time diagram.
  • 4c shows the course of the evaluation signal of the photosensor in a voltage-time diagram.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Engineering & Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Holo Graphy (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

The invention relates to an application and a method for checking documents. Hitherto, documents with optical diffraction security layers, specially holograms, were checked by costly optical monitoring technology. The entire monitoring process was so time-consuming that the monitoring process could not be applied to fast operating processing machines. Rapid monitoring (as an authentication characteristic) constitutes a further security step in evaluating effective optical diffraction security layers. The effective optical diffraction layer has a discontinuous metallizing layer and/or partially metal layers and/or areas of metal layers on various planes. Several methods of measurement exist to detect electrical conductivity. In practice, the contactless capacitive method of measurement has proven to be more practical.

Description

Anwendung und Verfahren zur Prüfung von Dokumenten mit beugungsoptisch wirksamen SicherheitsschichtenApplication and method for checking documents with diffractive optical security layers
Die Erfindung bezieht sich auf eine Anwendung und ein Verfahren zur Prüfung von Dokumenten.The invention relates to an application and a method for checking documents.
Bisher werden Dokumente mit beugungsoptischen Sicherheitsschichten, insbesondere Hologrammen, mit aufwendiger optischer Prüftechnik kontrolliert. Dabei muß das Prüfobjekt sehr genau positioniert werden. Der gesamte Prüfprozeß dauert dabei so lange, daß dieseSo far, documents with diffraction-optical security layers, in particular holograms, have been checked using complex optical inspection technology. The test object must be positioned very precisely. The entire test process takes so long that this
Prüfverfahren in schnellaufenden Bearbeitungsmaschinen keine Anwendung finden. Ein Test beispielsweise von Banknoten mit Hologrammechtheitsmerkmal ist innerhalb einerTest methods are not used in high-speed processing machines. A test, for example of banknotes with a hologram authenticity feature, is within one
Banknotenzählmaschine nicht möglich, da diese mit Geschwindigkeiten zwischen 500 und 1500 Banknoten pro Minute und darüber hinaus arbeitet. Die DE 27 47 156 beschreibt einBanknote counting machine is not possible because it works at speeds between 500 and 1500 banknotes per minute and beyond. DE 27 47 156 describes a
Verfahren und ein Prüfgerät zur Echtheitsprüfung holographisch abgesicherterMethod and a testing device for authenticity testing holographically secured
Identitätskarten. Das Hologramm wird reproduziert und eine Sichtkontrolle durchgeführt. Für eine schnelle, effiziente, personenunabhängige Prüfung ist dieses Verfahren nicht geeignet. In der EP 0 042 946 wird eine Vorrichtung zur Erzeugung von Abtastmustern beschrieben, die mittels Laser, Spiegel- und Linsensystem sowie einem Photodetektor geprüft werden. Der ökonomische Aufwand ist auch in diesem Fall sehr hoch. Er würde noch weiter steigen, wenn das Prüfgut unsortiert kontrolliert werden soll. Um eine Vorsortierung zu vermeiden, wäre eine mehrfache Anordnung des Echtheitsprüfsystems notwendig. Aufgabe der Erfindung ist es, die Nachteile des Standes der Technik zu beseitigen und eine Anwendung und ein Verfahren zur Prüfung von Dokumenten mit beugungsoptisch wirksamen Sicherheitsschichten, insbesondere Hologrammen, vorzuschlagen, die schnell, personenunabhängig und mit geringem Aufwand zu realisieren sind. Das Verfahren soll sowohl in Dokumentenprüfeinrichtungen und Geldbearbeitungsmaschinen, als auch in Handprüfgeräten zur Prüfung von Dokumenten mit beugungsoptisch wirksamen Sicherheitsschichten Anwendung finden.Identity cards. The hologram is reproduced and a visual inspection is carried out. This procedure is not suitable for quick, efficient, person-independent testing. EP 0 042 946 describes a device for generating scanning patterns which are checked using a laser, mirror and lens system and a photodetector. The economic effort is very high in this case too. It would increase even further if the test material was to be checked unsorted. In order to avoid presorting, the authenticity checking system would have to be arranged several times. The object of the invention is to eliminate the disadvantages of the prior art and to propose an application and a method for checking documents with diffraction-optically effective security layers, in particular holograms, which can be implemented quickly, independently of the person and with little effort. The method is intended to be used both in document checking devices and money processing machines and in manual checking devices for checking documents with security layers that have an optical diffraction effect.
Diese Aufgabenstellung wird durch die im kennzeichnenden Teil des Anspruchs 1 gegebenen Merkmale gelöst.This task is solved by the features given in the characterizing part of claim 1.
Der Einsatz von Hologrammen und anderen beugungsoptisch wirksamen Sicherheitsschichten zur Sicherung von Urkunden und anderen Wertpapieren sowie Banknoten gegen Fälschungen ist gegenwärtig immer häufiger anzutreffen. Eine schnelle Prüfbarkeit stellt eine weitere Sicherheitsstufe beim Bewerten der beugungsoptisch wirksamen Schichten als Echtheitsmerkmal dar. Beugungsoptisch wirksame Schichten bestehen unter anderem aus einer metallisierten Schicht. Diese Metallisierungsschicht ist elektrisch leitend. Entsprechend der Schichtdicke ändert sich die elektrische Leitfähigkeit. Die beugungsoptisch wirksame Schicht weist eine diskontinuierliche Metallisierungsschicht und/oder partiell metallische Schichten und/oder Zonen metallischer Schichten in unterschiedlichen Ebenen auf. Es sind verschiedene Meßverfahren bekannt, welche eine elektrische Leitfähigkeit nachweisen. In der Praxis hat sich das kontaktlose, kapazitive Meßverfahren als praktikabel erwiesen. Bei diesem Verfahren zur Prüfung von Sicherheitsdokumenten wird die kapazitive Kopplung zwischen Sender und Empfänger und Übertragung von Energie zwischen Sender und Empfänger durch Überbrückung eines elektromagnetischen Feldes durch elektrisch leitende Sicherheitsmaterialien ausgenutzt. Eine nachfolgende Auswerteelektronik vergleicht das Signalbild des Prüflings mit entsprechenden Referenzsignalen. Der Vergleich liefert ein klassifizierendes Signal zur Weiterverarbeitung. Dementsprechend könnte beispielsweise ein als Falsifikat erkanntes Dokument aussortiert werden, indem die Prüfeinrichtung gestoppt wird. Das Signalbild ist abhängig von der Struktur der metallisierten Schicht der beugungsoptisch wirksamen Schicht. Weisen die beugungsoptisch wirksamen Schichten eine diskontinuierliche Metallisierungsschicht auf, so besitzen mehrere Segmente der Metallisierungsschicht unterschiedliche elektrische Leitfähigkeiten. Die Praxis hat gezeigt, daß diese unterschiedlichen Leitfähigkeiten sich auf das Signalbild auswirken.The use of holograms and other diffraction-effective security layers to secure documents and other securities as well as banknotes against counterfeiting is currently becoming increasingly common. A quick testability represents a further security level when evaluating the diffraction-optically effective layers as a authenticity feature. Among other things, diffraction-optically effective layers consist of a metallized layer. This metallization layer is electrically conductive. The electrical conductivity changes according to the layer thickness. The diffraction-optically effective layer has a discontinuous metallization layer and / or partially metallic layers and / or zones of metallic layers in different planes. Various measuring methods are known which demonstrate electrical conductivity. In practice, the contactless, capacitive measuring method has proven to be practical. In this procedure for checking security documents, the capacitive coupling between the transmitter and receiver and the transmission of energy between the transmitter and receiver are carried out by Bridging an electromagnetic field exploited by electrically conductive safety materials. Subsequent evaluation electronics compare the signal image of the test object with the corresponding reference signals. The comparison provides a classifying signal for further processing. Accordingly, for example, a document recognized as a false certificate could be sorted out by stopping the test device. The signal pattern depends on the structure of the metallized layer of the diffraction-optical layer. If the diffraction-optically active layers have a discontinuous metallization layer, then several segments of the metallization layer have different electrical conductivities. Practice has shown that these different conductivities affect the signal pattern.
Eine weitere Erhöhung der Prüfsicherheit ergibt sich aus der Kombination der Prüfung der elektrischen Leitfähigkeit mit weiteren Echtheitsmerkmalen der beugungsoptisch wirksamen Schicht. Durch Einbringen von zusätzlichen Echtheitsmerkmalen in demetallisierte Segmente innerhalb von diskontinuierlichen Metallisierungsschichten und/oder partiell metallischen Schichten und/oder zwischen Zonen metallischer Schichten in unterschiedlichen Ebenen lassen sich gleichzeitig diese Merkmale sowie die elektrische Leitfähigkeit prüfen. Mittels der Auswerteelektronik wird ein Echtheitssignal eines weiteren Sensors zur Echtheitsbestimmung logisch mit dem Sensor zur Messung der elektrischen Leitfähigkeit verknüpft. Am Ausgang der Auswerteelektronik liegt ein die beugungsoptisch wirksame Schicht klassifizierendes Signal zur weiteren Verarbeitung an. Dieses zusätzliche Echtheitsmerkmal besitzt fluoreszierende, phosphoreszierende oder Licht absorbierende Eigenschaften oder unterscheidet sich durch unterschiedliche magnetische Eigenschaften von dessen Umgebung. Dementsprechend findet ein optischer oder magnetischer Sensor Anwendung. Zur Verminderung von Detektions- und Meßfehlern wird vorzugsweise ein Sensorträger verwendet. Dieser Sensorträger nimmt alle Sensoren zur Detektion von EchtheitsmerkmalenA further increase in test reliability results from the combination of testing the electrical conductivity with further authenticity features of the diffraction-optical layer. By introducing additional authenticity features into demetalized segments within discontinuous metallization layers and / or partially metallic layers and / or between zones of metallic layers in different levels, these features and the electrical conductivity can be checked at the same time. Using the evaluation electronics, an authenticity signal of another sensor for authenticity determination is logically linked to the sensor for measuring the electrical conductivity. At the output of the evaluation electronics there is a signal that classifies the diffraction-optically effective layer for further processing. This additional authenticity feature has fluorescent, phosphorescent or light absorbing properties or differs from its surroundings by different magnetic properties. Accordingly, an optical or magnetic sensor is used. A sensor carrier is preferably used to reduce detection and measurement errors used. This sensor carrier takes all sensors for the detection of authenticity features
auf. Die Abstände zwischen den Sensoren werden so minimiert und die Sensoren immer inon. The distances between the sensors are minimized and the sensors are always in
definierter Lage angeordnet. Um Störeinflüsse zu vermeiden, wird der Sensorträger kompaktdefined location arranged. To avoid interference, the sensor carrier is compact
mit einer Platine verbunden, welche die Auswerteelektronik trägt. Die gesamteconnected to a circuit board that carries the evaluation electronics. The whole
Prüfeinrichtung befindet sich innerhalb von Bearbeitungsmaschinen, so daß keineTest facility is located inside processing machines, so none
zusätzlichen Aufwendungen zum Transport der Prüfobjekte notwendig sind.additional expenses for the transport of the test objects are necessary.
Die Merkmale der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung undThe features of the invention go beyond the claims also from the description and
den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zuthe drawings, the individual features each individually or to
mehreren in Form von Unterkombinationen vorteilhafte, schutzfähige Ausführungen darstellen, für die hier Schutz beansprucht wird. Ein Ausführungsbeispiel der Erfindung ist inrepresent several, in the form of sub-combinations advantageous, protectable versions, for which protection is claimed here. An embodiment of the invention is in
den Zeichnungen dargestellt und wird im folgenden Ausführungsbeispiel näher erläutert.the drawings and is explained in more detail in the following embodiment.
In den Zeichnungen zeigen:The drawings show:
Fig. 1 schematischer Schnitt durch eine Bearbeitungsmaschine mitFig. 1 shows a schematic section through a processing machine
PrüfVorrichtung,Test device,
Fig. 2a schematischer Schnitt durch ein Hologramm mit demetallisierten Segmenten2a shows a schematic section through a hologram with demetalized segments
Fig. 2b Spannungs-Zeit-Diagramm des AuswertesignalsFig. 2b voltage-time diagram of the evaluation signal
Fig. 3a schematischer Schnitt durch ein Hologramm mit diskontinuierlicherFig. 3a schematic section through a hologram with discontinuous
MetallisierungsschichtMetallization layer
Fig. 3b Spannungs-Zeit-Diagramm des Auswertesignals Fig. 4a schematischer Schnitt durch ein Hologramm mit UV-Echtheitsmerkmal Fig. 4b Spannungs-Zeit-Diagramm des Auswertesignals der elektrischen3b shows a voltage-time diagram of the evaluation signal. FIG. 4a shows a schematic section through a hologram with a UV authenticity feature Fig. 4b voltage-time diagram of the evaluation signal of the electrical
Leitfähigkeitsprüfung Fig. 4c Spannungs-Zeit-Diagramm des Auswertesignals des UV-SensorsConductivity test Fig. 4c voltage-time diagram of the evaluation signal of the UV sensor
Das erfindungsgemäße Prüfverfahren sieht vor, daß in Banknotenzählmaschinen an geeigneten Positionen die entsprechenden Sensoren installiert werden. Die Sensoren zur Detektierung der elektrischen Leitfähigkeit sind derart ausgebildet, daß die gesamte Banknotenwegbreite überwacht wird, so daß der Sensor die Banknoten lageneutral prüfen kann. Optische oder mechanische Sensoren erfassen die Anwesenheit einer Banknote und liefern ein Referenzsignal für die Zeitsteuerung der Prüfvorrichtung 4. Gleichfalls werden dadurch die Sensoren zur Echtheitsprüfung des Hologramms aktiviert. Durch Aufzeichnung des gesamten Zeitfensters vom Beginn der Banknote bis zu ihrem Ende ist die Position des Hologramms auf der Banknote feststellbar. In Fig. 1 wird dargestellt, wie die Prüfvorrichtung 4 im Transportweg der Banknote angeordnet ist. Die Banknotenzählmaschine beinhaltet ein Einzugsrad 1, Transporträder 2, eine Banknoten-leiteinrichtung 3 und eine Prüfvorrichtung 4.The test method according to the invention provides that the corresponding sensors are installed in banknote counting machines at suitable positions. The sensors for detecting the electrical conductivity are designed such that the entire banknote path width is monitored, so that the sensor can check the banknotes in a position-neutral manner. Optical or mechanical sensors detect the presence of a banknote and supply a reference signal for the time control of the test device 4. The sensors for checking the authenticity of the hologram are also activated thereby. The position of the hologram on the banknote can be determined by recording the entire time window from the beginning of the banknote to the end thereof. 1 shows how the test device 4 is arranged in the transport path of the banknote. The banknote counting machine includes a feed wheel 1, transport wheels 2, a banknote guiding device 3 and a checking device 4.
Fig. 2a zeigt einen schematischen Schnitt durch ein Hologramm mit einer Trägerschicht 11 und einer partiell metallischen Schicht 12. Die partiell metallische Schicht 12 beinhaltet mehrere demetallisierte Segmente 13. In Fig. 2b ist das zugehörige Auswertesignal in einem Spannungs-Zeit-Diagramm dargestellt.FIG. 2a shows a schematic section through a hologram with a carrier layer 11 and a partially metallic layer 12. The partially metallic layer 12 contains several demetallized segments 13. The associated evaluation signal is shown in FIG. 2b in a voltage-time diagram.
Fig. 3 a zeigt einen schematischen Schnitt durch ein Hologramm mit einer Trägerschicht 11 und einer diskontinuierlichen Metallisierungsschicht 14. Die diskontinuierliche Metallisierungsschicht 14 beinhaltet Segmente 15, 16, 17, 18, 19 mit unterschiedlicher elektrischer Leitfähigkeit. In Fig. 3b ist das zugehörige Auswertesignal in einem Spannungs- Zeit-Diagramm dargestellt.3 a shows a schematic section through a hologram with a carrier layer 11 and a discontinuous metallization layer 14. The discontinuous Metallization layer 14 contains segments 15, 16, 17, 18, 19 with different electrical conductivity. 3b shows the associated evaluation signal in a voltage-time diagram.
Fig. 4a zeigt einen schematischen Schnitt durch ein Hologramm mit einer Trägerschicht 11 und einer diskontinuierlichen Metallisierungsschicht 20. Die diskontinuierliche Metallisierungsschicht 20 beinhaltet demetallisierte Segmente 21 sowie zusätzliche Echtheitsprüfmerkmale. Bei diesen Echtheitsmerkmalen handelt es sich um fluoreszierende Farben 22, die bei der Prüfung mittels UV-Licht angeregt und mittels Photosensoren detektiert werden. Vorzugsweise befinden sich die zusätzlichen Echtheitsprüfmerkmale innerhalb der demetallisierten Segmente 21. In Fig. 4b ist das zugehörige Auswertesignal des kapazitiv arbeitenden, die elektrische Leitfähigkeit prüfenden Sensors in einem Spannungs- Zeit-Diagramm dargestellt. Fig. 4c zeigt in einem Spannungs-Zeitdiagramm den Verlauf des Auswertesignals des Photosensors.4a shows a schematic section through a hologram with a carrier layer 11 and a discontinuous metallization layer 20. The discontinuous metallization layer 20 contains demetallized segments 21 and additional authenticity checking features. These authenticity features are fluorescent colors 22, which are excited during the test by means of UV light and detected by means of photosensors. The additional authenticity check features are preferably located within the demetallized segments 21. In FIG. 4b, the associated evaluation signal of the capacitively operating sensor that checks the electrical conductivity is shown in a voltage-time diagram. 4c shows the course of the evaluation signal of the photosensor in a voltage-time diagram.
In der vorliegenden Erfindung wurde anhand eines konkreten Ausführungsbeispiels die Prüfung von Dokumenten mit beugungsoptisch wirksamen Sicherheitsschichten erläutert. Es sei aber vermerkt, daß die vorliegende Erfindung nicht auf die Einzelheiten der Beschreibung im Ausführungsbeispiel eingeschränkt ist, da im Rahmen der Patentansprüche Änderungen und Abwandlungen beansprucht werden. In the present invention, the examination of documents with optically diffractive security layers was explained on the basis of a specific exemplary embodiment. However, it should be noted that the present invention is not restricted to the details of the description in the exemplary embodiment, since changes and modifications are claimed within the scope of the patent claims.

Claims

Patentansprüche: Claims:
1. Anwendung des Verfahrens zur Prüfung von Dokumenten unter Nutzung der kapazitiven Kopplung zwischen Sender und Empfänger und Übertragung von Energie zwischen Sender und Empfänger durch elektrisch leitende Sicherheitsmaterialien, dadurch gekennzeichnet, daß zur Echtheitsprüfung von Dokumenten mit beugungsoptisch wirksamen Sicherheitsschichten mit diskontinuierlicher Metallisierungsschicht (14) oder partiell metallischen Schichten (12, 20) oder Zonen metallischer Schichten in unterschiedlichen Ebenen die elektrische Leitfähigkeit bestimmt und ausgewertet wird.1. Application of the method for checking documents using the capacitive coupling between the transmitter and receiver and the transmission of energy between the transmitter and receiver by electrically conductive security materials, characterized in that for checking the authenticity of documents with diffraction-effective security layers with discontinuous metallization layer (14) or partially metallic layers (12, 20) or zones of metallic layers in different levels the electrical conductivity is determined and evaluated.
2. Anwendung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß zur Echtheitsprüfung von Dokumenten mit beugungsoptisch wirksamen Sicherheitsschichten mit diskontinuierlicher Metallisierungsschicht (14) und partiell metallischen Schichten (12, 20) die elektrische Leitfähigkeit bestimmt und ausgewertet wird.2. Application of the method according to claim 1, characterized in that the electrical conductivity is determined and evaluated for authenticity checking of documents with diffraction-optically effective security layers with discontinuous metallization layer (14) and partially metallic layers (12, 20).
3. Anwendung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß zur Echtheitsprüfüng von Dokumenten mit beugungsoptisch wirksamen Sicherheitsschichten mit diskontinuierlicher Metallisierungsschicht (14) und Zonen metallischer Schichten in unterschiedlichen Ebenen die elektrische Leitfähigkeit bestimmt und ausgewertet wird. 3. Application of the method according to claim 1, characterized in that the electrical conductivity is determined and evaluated for authenticity checking of documents with diffraction-optically effective security layers with discontinuous metallization layer (14) and zones of metallic layers in different levels.
4. Anwendung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß zur Echtheitsprüfüng von Dokumenten mit beugungsoptisch wirksamen Sicherheitsschichten mit partiell metallischen Schichten (12, 20) und Zonen metallischer Schichten in unterschiedlichen Ebenen die elektrische Leitfähigkeit bestimmt und ausgewertet wird.4. Application of the method according to claim 1, characterized in that the electrical conductivity is determined and evaluated for authenticity checking of documents with diffractive optical security layers with partially metallic layers (12, 20) and zones of metallic layers in different levels.
5. Anwendung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß zur Echtheitsprüfung von Dokumenten mit beugungsoptisch wirksamen Sicherheitsschichten mit diskontinuierlicher Metallisierungsschicht (14) und partiell metallischen Schichten (12, 20) und Zonen metallischer Schichten in unterschiedlichen Ebenen die elektrische Leitfähigkeit bestimmt und ausgewertet wird.5. Use of the method according to claim 1, characterized in that the electrical conductivity is determined and evaluated for authenticity checking of documents with diffractive optical security layers with discontinuous metallization layer (14) and partially metallic layers (12, 20) and zones of metallic layers in different levels .
6. Anwendung des Verfahrens nach einem oder mehreren der Ansprüche 1 bis 5, gekennzeichnet durch die Prüfung von zusätzlich einbringbaren Echtheitsmerkmalen innerhalb demetallisierter Segmente innerhalb von diskontinuierlichen Metallisierungsschichten (14) und/oder partiell metallischen Schichten (12, 20) und/oder zwischen Zonen metallischer Schichten in unterschiedlichen Ebenen.6. Application of the method according to one or more of claims 1 to 5, characterized by testing additional authenticity features that can be introduced within demetallized segments within discontinuous metallization layers (14) and / or partially metallic layers (12, 20) and / or between zones of metallic Layers in different levels.
7. Anwendung des Verfahrens nach Anspruch 6, gekennzeichnet durch die Prüfung der fluoreszierenden Eigenschaften des zusätzlich einbringbaren Echtheitsmerkmals.7. Application of the method according to claim 6, characterized by the examination of the fluorescent properties of the authenticity feature which can additionally be introduced.
8. Anwendung des Verfahrens nach Anspruch 6, gekennzeichnet durch die Prüfung der phosphoreszierenden Eigenschaften des zusätzlich einbringbaren Echtheitsmerkmals. 8. Application of the method according to claim 6, characterized by the examination of the phosphorescent properties of the authenticity feature which can additionally be introduced.
9. Anwendung des Verfahrens nach Anspruch 6, gekennzeichnet durch die Prüfung der Licht absorbierenden Eigenschaften des zusätzlich einbringbaren Echtheitsmerkmals.9. Application of the method according to claim 6, characterized by the examination of the light-absorbing properties of the authenticity feature which can additionally be introduced.
10. Anwendung des Verfahrens nach Anspruch 6, gekennzeichnet durch die Prüfung sich von der Umgebung unterscheidender magnetischer Eigenschaften des zusätzlich einbringbaren Echtheitsmerkmals.10. Application of the method according to claim 6, characterized by the testing of the magnetic properties of the authenticity feature which can additionally be introduced and which differ from the environment.
11. Anwendung des Verfahrens nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die beugungsoptisch wirksame Sicherheitsschicht ein Hologramm ist.11. Application of the method according to one or more of the preceding claims, characterized in that the diffraction-optically effective security layer is a hologram.
12. Anwendung des Verfahrens nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch die Prüfung von Hologrammen in schnellaufenden Bearbeitungsmaschinen mit einer Geschwindigkeit bis 2000 Dokumente je Minute.12. Application of the method according to one or more of the preceding claims, characterized by the testing of holograms in high-speed processing machines at a speed of up to 2000 documents per minute.
13. Anwendung des Verfahrens nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch die Prüfung von Hologrammen in Handgeräten. 13. Application of the method according to one or more of the preceding claims, characterized by the testing of holograms in handheld devices.
14. Verfahren zur Prüfung von Dokumenten unter Nutzung der kapazitiven Kopplung zwischen Sender und Empfänger und Übertragung von Energie zwischen Sender und Empfänger durch elektrisch leitende Sicherheitsmaterialien, dadurch gekennzeichnet, daß ein zu prüfendes Dokument mit beugungsoptisch wirksamer Sicherheitsschicht mit diskontinuierlicher Metallisierungsschicht (14) und/oder partiell metallischen Schichten (12, 20) und/oder Zonen metallischer Schichten in unterschiedlichen Ebenen an einer Sensorelektronik mit definierter Geschwindigkeit vorbeigeführt wird, Energie kapazitiv von einer oder mehreren Sendeelektroden über Metallisierungsschichten zu einer oder mehreren Empfangselektroden übertragen wird und die an der oder den Empfangselektroden anliegenden Signale mittels einer Auswerteelektronik verstärkt, mit einem Referenzsignal verglichen werden und am Ausgang der Auswerteelektronik ein das Dokument klassifizierendes Signal zur weiteren Verarbeitung anliegt.14. A method for checking documents using the capacitive coupling between the transmitter and receiver and the transmission of energy between the transmitter and receiver by electrically conductive security materials, characterized in that a document to be checked with an optical diffraction-effective security layer with discontinuous metallization layer (14) and / or partially metallic layers (12, 20) and / or zones of metallic layers in different levels are guided past sensor electronics at a defined speed, energy is transferred capacitively from one or more transmitting electrodes via metallization layers to one or more receiving electrodes and the adjacent electrodes Signals are amplified by means of evaluation electronics, compared with a reference signal and a signal that classifies the document is present at the output of the evaluation electronics for further processing.
15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß ein Dokument mit beugungsoptisch wirksamen Sicherheitsschichten in mindestens zwei unterschiedlichen15. The method according to claim 14, characterized in that a document with diffractive optical security layers in at least two different
Prüfrichtungen geprüft wird.Test directions is checked.
16. Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß mittels der Auswerteelektronik das klassifizierende Signal mit einem Echtheitssignal eines zusätzlich einbringbaren Echtheitsmerkmals nach dessen Prüfung mittels eines weiteren Sensors logisch verknüpft wird und am Ausgang der Auswerteelektronik ein das Dokument klassifizierendes Verknüpfungssignal zur weiteren Verarbeitung anliegt. 16. The method according to claim 14, characterized in that the classifying signal is logically linked by means of the evaluation electronics with an authenticity signal of an additionally insertable authenticity feature after its checking by means of a further sensor and at the output of the evaluation electronics a linking signal classifying the document is present for further processing.
EP98932026A 1997-04-25 1998-04-24 Application and method for checking documents with effective optical diffraction security layer Revoked EP0978108B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19718916A DE19718916A1 (en) 1997-04-25 1997-04-25 Application and method for checking documents with diffractive optical security layers
DE19718916 1997-04-25
PCT/DE1998/001182 WO1998049655A2 (en) 1997-04-25 1998-04-24 Application and method for checking documents with effective optical diffraction security layer

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EP0978108A2 true EP0978108A2 (en) 2000-02-09
EP0978108B1 EP0978108B1 (en) 2005-04-27

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EP0978108B1 (en) 2005-04-27
BR9809776A (en) 2000-09-05
TR199902662T2 (en) 2000-02-21
NO994726L (en) 1999-12-22
JP2001524235A (en) 2001-11-27
BG103839A (en) 2000-04-28
CZ294452B6 (en) 2005-01-12
LV12423B (en) 2000-05-20
CN1253648A (en) 2000-05-17
HUP0002699A2 (en) 2000-12-28
KR20010020271A (en) 2001-03-15
PL336534A1 (en) 2000-07-03
RU2185662C2 (en) 2002-07-20
CA2294303A1 (en) 1998-11-05
BG63811B1 (en) 2003-01-31
ES2241148T3 (en) 2005-10-16
DE59812753D1 (en) 2005-06-02
PL186435B1 (en) 2004-01-30
LV12423A (en) 2000-01-20
AU8208498A (en) 1998-11-24
CZ380099A3 (en) 2000-02-16
JP2007242042A (en) 2007-09-20
PT978108E (en) 2005-09-30
WO1998049655A2 (en) 1998-11-05
NO994726D0 (en) 1999-09-29
DE19718916A1 (en) 1998-10-29
ATE294427T1 (en) 2005-05-15
HUP0002699A3 (en) 2004-09-28
WO1998049655A3 (en) 1999-02-04

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