EP1741067B1 - System for the real-time verification and the marking of valuable documents or security documents - Google Patents

System for the real-time verification and the marking of valuable documents or security documents Download PDF

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Publication number
EP1741067B1
EP1741067B1 EP05716222.4A EP05716222A EP1741067B1 EP 1741067 B1 EP1741067 B1 EP 1741067B1 EP 05716222 A EP05716222 A EP 05716222A EP 1741067 B1 EP1741067 B1 EP 1741067B1
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Prior art keywords
marking
feature
sensor
valuable
security
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German (de)
French (fr)
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EP1741067A1 (en
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Manfred Paeschke
Oliver Muth
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Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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    • 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 invention relates to a system for authenticity verification and for marking value or security documents with the features of claim 1.
  • a system for authenticating and marking value or security documents is known.
  • logistics applications such as in the postal service with cargo or letters, in which the franking is done by means of affixed stamps, the requirement is made that the stamp irreversibly marked as security and value document after completion of service and thus devalued.
  • This validation should be machine-readable in order to automatically detect and prevent an attempt to re-use the stamp and obtain a new transport service that is unpaid.
  • Stamps are conventionally made of a paper or plastic substrate with a backside adhesive coating and a graphic high quality designed front. This front side also has security features that are used for mechanical authenticity verification (verification).
  • stamping is conventionally done by stamping.
  • Inks for the stamping ink must be as light-fast as possible and not be removed from the document of value.
  • safety-relevant additives such as fluorescent substances or biochemical substances have been added to the inks used for this purpose.
  • these security inks provide a high level of protection against counterfeiting, the stampings can only be verified with optical image recognition methods and special sensors aligned with the respective security material, whereby manipulations and forgeries can only be recognized to a limited extent.
  • the invention therefore proposes a verification and validation system with a high degree of automation, which offers adequate protection against counterfeiting and manipulation.
  • the system according to the invention for checking the authenticity and for marking value or security documents relates to value or security documents which contain at least one security feature and one marking feature.
  • the value or security document is mounted on a carrier, for example a mail piece or a document, which is moved by means of a transport system relative to a verification sensor, which checks the authenticity of the security feature, and in the case that the authenticity is detected, a signal to marking to a marking system, whereby the marking feature undergoes a visually detectable and physically detectable irreversible change.
  • the system thus includes materials for value and security documents which can be irreversibly changed without contact by means of excitation sources, for example laser sources which are contained in a sensor system for authenticity checking and marking.
  • excitation sources for example laser sources which are contained in a sensor system for authenticity checking and marking.
  • the changes consist both in information visible to the human eye and in physically detectable characteristics of the marking feature.
  • the marking and devaluation is preferably carried out by means of electromagnetic radiation, in particular in the wavelength range from 200 nm to 1500 nm, wherein the irreversible change in a color change and in a change in electrical conductivity.
  • Suitable marking features are formed on the basis of poly (organylheteroacetylene) or based on a mixture of poly (organylheteroacetylene) with other polymers.
  • the verification sensor and the marking system form one and the same device or one and the same unit. This results in advantages in terms of construction costs.
  • a further advantageous embodiment consists in the fact that the marking feature based on microencapsulated pigments is formed in a polymer matrix with near infrared (NIR) -sensitive and irreversibly changeable color and / or conductivity properties, or that bacteriorhodopsin-mediating changes in the pH or a combination of irreversible NIR-active photochromic substances are based on a substance which changes the electrical conductivity and / or the magnetic properties.
  • NIR near infrared
  • the marking feature on the value or security document is graphically designed such that the visually detectable and physically detectable change is limited to local areas of the document, in particular that the marking feature a margin closed frame around the value or security document. This makes it possible to determine visually at a glance whether the devaluation has taken place properly.
  • the marking feature on the value or security document For the attachment of the marking feature on the value or security document, a number of embodiments result: For example, further, at least semi-translucent and transparent, in particular NIR-transparent printed layers can be arranged above the marking feature, or the marking feature can be attached to the value or security document a bottom-side adhesive coating to be integrated, wherein the value or security document must be designed so that a color change from the top is clearly noticeable.
  • the marking feature can advantageously be applied to the surface of the value or security document over the entire surface by means of suitable coating techniques, in particular by brushing, or incorporated into a reporting graphical representation.
  • suitable coating techniques in particular by brushing, or incorporated into a reporting graphical representation.
  • Offset, Letterset, Flexo, screen printing, intaglio printing, gravure printing, inkjet us. be applied.
  • a particularly tamper-proof and well detectable development of the invention is that the marking feature is designed as a circular path, which forms an induction loop after NIR irradiation.
  • the security feature is preferably formed on the basis of a light-resistant luminescent phosphor which is admixable with a printing ink for graphic design of the security document and detectable by means of the verification sensor, wherein the luminescent phosphor is formed from an anti-Stokes phosphor, which by means of NIR Radiation can be excited, and its emission bands in the visible and / or NIR wavelength range intensity and / or time resolved for authenticity verification.
  • a line-shaped verification system on the basis of a sensor IC line or a series arrangement of laser diodes according to the simultaneously filed invention B81941DE, to which reference is expressly made, are used.
  • the marking system of the validation and verification system preferably comprises a line-shaped NIR light source which emits electromagnetic radiation in the wavelength range from about 200 nm to about 1400 nm.
  • the marking system can consist of one or more rows of NIR LEDs or NIR laser diodes.
  • the system includes a control sensor with which the visually detectable and physically detectable change is checked.
  • the control sensor preferably contains a color sensor which controls the optical change of the marking feature and a sensor for checking the physical change of the marking feature, in particular a sensor for checking the electrical conductivity of the marking feature, preferably a sensor which metrologically evaluates one or more induction loops.
  • the system according to the invention for checking the authenticity and for marking value or security documents preferably relates to franked letters, in particular large letters or maximum letters, the document of value consisting of a letter bank which automatically opens Presence and authenticity checked and then irreversibly canceled.
  • the security feature substance may be contained in the printing ink of a graphically designed token or may be applied over the entire surface, locally (piecewise) or bounding before printing or between individual prints.
  • Fig. 1 an embodiment of the device for verification, marking and control of value or security documents is shown schematically.
  • the carrier 3 With the conveyor belt 6, the carrier 3 is moved under a line-shaped Verificationssensor 7, a line-shaped marking system 8 and optionally under a control sensor 9.
  • the speed can be up to 4 m / sec and above.
  • the verification sensor 7 checks whether the security feature 4 is present on the value document 2. He also determines the number of vom This information is transmitted to a master computer and from there or directly, in the form of a control signal to the marking system 8.
  • the marking system 8 is activated by the control signal for a short time in the area of the value documents. This causes an irreversible color change and the increase in the conductivity in the marking feature 5.
  • the marking system 8 is preferably formed as a line in the form of bars and for rapid switching on and off. The latter arises not only from the point of view of energy consumption but also for safety considerations, so that in case of congestion of carriers their damage and possibly a fire can be avoided.
  • the marking system 8 therefore includes NIR LED arrays or laser diodes because they can be operated with extremely short pulses.
  • the arrow indicates the transport direction.
  • Fig. 2 an embodiment is shown that according to Fig. 1 is similar, with the difference that the marking unit is omitted.
  • the laser beam of the verification unit 7 provokes both luminescence and photochemically induced conversion of the marking feature 5.
  • the prerequisite for this is:
  • the time constant of the verification / luminescence (eg a few ⁇ s) is orders of magnitude smaller than the time constant of the photochemical reaction (eg a few ms).
  • the arrow indicates the transport direction.
  • Fig. 3 shows the conveyor belt 6 in plan view, with the carrier 3 in the form of a Maxibriefs, on which at not exactly predetermined location a stamp 2 is applied.
  • the letter salary contains a security feature 4, which is shown here graphically in the outline of a house, and a marker 5, which is shown as an outer closed frame.
  • the Verificationssensor 7 must be able to do that with a very low degree of filling in the ink of the contour ("house") included Security feature to detect very quickly, because immediately after the marking system 8 requires a release signal to trigger the marking and validation process.
  • the arrangement can also be embodied such that a switch for rejected carriers is set up between the verification sensor 7 and the marking system 8 and the marking system 8 is automatically activated upon sensory recognition of a value document.
  • a heat-absorbent layer in particular based on aluminum-coated mica platelets, can be incorporated inside or below the marking feature.
  • all initiators customary for laser marking at 1064 nm can be used in a polymeric matrix.
  • mica platelets with an NIR absorber and a polymer encapsulation in a correspondingly higher meltable polymer matrix are used in these systems.
  • the marking feature is preferably on certain local areas of the value document, for example the in Fig. 2 limited limits.
  • the condition of the cancellation can then be determined with a brief inspection.
  • the marking can also be integrated in other graphic elements or in a rapporting printed image.
  • the marking can also be applied over the entire surface of the document substrate with suitable coating methods, such as brushing or painting, whereby this process can take place both before and after the graphic design of the stamp. It is also possible to integrate the marking back into the adhesive layer, wherein the front of the stamp is graphically designed so that after the devaluation a correspondingly clear color change from the front can be seen.

Description

Die Erfindung betrifft ein System zur Echtheitsüberprüfung und zur Markierung von Wert- oder Sicherheitsdokumenten mit den Merkmalen des Anspruchs 1. Aus der WO03/096285 A2 ist ein System zur Echtheitsüberprüfung und zur Markierung von Wert- oder Sicherheitsdokumenten bekannt. In Logistikanwendungen wie im Postverkehr mit Frachtgut oder Briefen, bei denen die Freimachung mittels aufgeklebter Briefmarken erfolgt, wird die Forderung gestellt, dass die Briefmarke als Sicherheits- und Wertdokument nach vollzogener Dienstleistung irreversibel markiert und damit entwertet wird. Diese Entwertung sollte maschinenlesbar sein, damit ein Versuch, die Briefmarke wiederzuverwenden und eine erneute Transportdienstleistung zu erlangen, die nicht bezahlt ist, automatisch erkannt und verhindert werden kann.The invention relates to a system for authenticity verification and for marking value or security documents with the features of claim 1. From the WO03 / 096285 A2 A system for authenticating and marking value or security documents is known. In logistics applications such as in the postal service with cargo or letters, in which the franking is done by means of affixed stamps, the requirement is made that the stamp irreversibly marked as security and value document after completion of service and thus devalued. This validation should be machine-readable in order to automatically detect and prevent an attempt to re-use the stamp and obtain a new transport service that is unpaid.

Speziell bei Großbriefen sind die Abmessungen in Länge Breite und Höhe des Briefes sehr unterschiedlich. Position und Ausrichtung der oftmals mehreren Briefmarken liegt nicht fest. In automatischen Briefsortieranlagen müssen daher die verschiedenen Lese-, Prüf-, Markierungs- und Kontrollvorgänge über einen relativ großen uneinheitlichen Arbeitsabstand realisiert werden. Einschlägige Anlagen verwenden üblicherweise laserbasierende Mess- und Bearbeitungsverfahren mit denen die unterschiedlichen Leseabstände bewältigt und zugleich auch die erforderlichen Verarbeitungsgeschwindigkeiten bis zu typischerweise 4 m/sec erreicht werden.Especially for large letters, the dimensions in length width and height of the letter are very different. Position and orientation of often several stamps is not fixed. In automatic letter sorting systems, therefore, the various reading, testing, marking and control operations must be implemented over a relatively large nonuniform working distance. Relevant systems usually use laser-based measuring and processing methods with which the different reading distances are mastered and at the same time the required processing speeds of up to typically 4 m / sec are achieved.

Briefmarken bestehen herkömmlich aus einem Substrat aus Papier oder Kunststoff mit einer rückseitigen Kleberbeschichtung und einer grafisch hochwertig gestalteten Vorderseite. Diese Vorderseite weist zudem Sicherheitsmerkmale auf, die zur maschinellen Echtheitsüberprüfung (Verifikation) herangezogen werden.Stamps are conventionally made of a paper or plastic substrate with a backside adhesive coating and a graphic high quality designed front. This front side also has security features that are used for mechanical authenticity verification (verification).

Die Entwertung von Briefmarken wird herkömmlich durch Stempeln vorgenommen. In gleicher Weise erfolgt auch die Gültigmachung von Urkunden, Ausweisen und dgl., die ebenfalls zum vorliegenden Problemkreis zählt. Tinten für die Stempelfarbe müssen dabei möglichst lichtecht und vom Wertdokument nicht mehr entfernbar sein. In jüngerer Zeit werden den hierfür verwendeten Tinten zusätzlich noch sicherheitsrelevante Additive, wie Fluoreszenzstoffe oder biochemische Substanzen hinzugefügt. Diese Sicherheitstinten stellen zwar einen hohen Fälschungsschutz dar, die Stempelungen können aber nur mit optischen Bilderkennungsverfahren und auf den jeweiligen Sicherheitsstoff ausgerichteter spezieller Sensorik verifiziert werden, wobei Manipulationen und Fälschungen nur sehr bedingt erkannt werden können.Cancellation of stamps is conventionally done by stamping. In the same way, the validation of documents, ID cards and the like., Which also counts to the present problem area. Inks for the stamping ink must be as light-fast as possible and not be removed from the document of value. More recently, safety-relevant additives such as fluorescent substances or biochemical substances have been added to the inks used for this purpose. Although these security inks provide a high level of protection against counterfeiting, the stampings can only be verified with optical image recognition methods and special sensors aligned with the respective security material, whereby manipulations and forgeries can only be recognized to a limited extent.

Mit der Erfindung wird daher ein Verifikations- und Entwertungssystem mit hohem Automatisierungsgrad vorgeschlagen, das gegen Fälschungen und Manipulationen hinreichenden Schutz bietet.The invention therefore proposes a verification and validation system with a high degree of automation, which offers adequate protection against counterfeiting and manipulation.

Das erfindungsgemäße System zur Echtheitsüberprüfung und zur Markierung von Wert- oder Sicherheitsdokumenten betrifft Wert- oder Sicherheitsdokumente, die zumindest ein Sicherheitsmerkmal und ein Markierungsmerkmal enthalten. Das Wert- oder Sicherheitsdokument ist auf einem Träger, bspw. einer Postsendung oder einer Urkunde angebracht, der mittels eines Transportsystems relativ zu einem Verifikationssensor bewegt wird, der die Echtheit des Sicherheitsmerkmals überprüft, und im Falle, dass die Echtheit erkannt wird, ein Signal zur markierenden Entwertung an ein Markierungssystem gibt, wodurch das Markierungsmerkmal eine visuell erkennbare und physikalisch detektierbare irreversible Änderung erfährt.The system according to the invention for checking the authenticity and for marking value or security documents relates to value or security documents which contain at least one security feature and one marking feature. The value or security document is mounted on a carrier, for example a mail piece or a document, which is moved by means of a transport system relative to a verification sensor, which checks the authenticity of the security feature, and in the case that the authenticity is detected, a signal to marking to a marking system, whereby the marking feature undergoes a visually detectable and physically detectable irreversible change.

Das System umfasst somit Materialien für Wert- und Sicherheitsdokumente, die sich mittels Anregungsquellen, bspw. Laserquellen, die in einer Sensorik zur Echtheitsüberprüfung und Markierung enthalten sind, kontaktlos irreversibel verändern lassen. Die Veränderungen bestehen sowohl in einer für das menschliche Auge sichtbaren Information als auch in physikalisch detektierbaren Eigenschaften des Markierungsmerkmals.The system thus includes materials for value and security documents which can be irreversibly changed without contact by means of excitation sources, for example laser sources which are contained in a sensor system for authenticity checking and marking. The changes consist both in information visible to the human eye and in physically detectable characteristics of the marking feature.

Die Markierung und Entwertung erfolgt bevorzugt mittels elektromagnetischen Bestrahlung, insbesondere im Wellenlängenbereich von 200 nm bis 1500 nm, wobei die irreversible Änderung in einer Farbänderung und in einer Änderung der elektrischen Leitfähigkeit besteht. Geeignete Markierungsmerkmale werden dabei auf der Basis von Poly(organylheteroacetylene) oder auf der Basis eines Gemisches aus Poly(organylheteroacetylene) mit anderen Polymeren gebildet.The marking and devaluation is preferably carried out by means of electromagnetic radiation, in particular in the wavelength range from 200 nm to 1500 nm, wherein the irreversible change in a color change and in a change in electrical conductivity. Suitable marking features are formed on the basis of poly (organylheteroacetylene) or based on a mixture of poly (organylheteroacetylene) with other polymers.

Vorzugsweise bilden Verifikationssensor und Markierungssystem ein und dasselbe Gerät bzw. ein und dieselbe Einheit. Dadurch ergeben sich Vorteile hinsichtlich des Bauaufwandes.Preferably, the verification sensor and the marking system form one and the same device or one and the same unit. This results in advantages in terms of construction costs.

Eine weitere vorteilhafte Ausführungsformen bestehen darin, dass das Markierungsmerkmal auf der Basis von mikroverkapselten Pigmenten in einer Polymermatrix mit im nahen Infrarot (NIR) sensitiven und irreversibel veränderbaren Farb- und/oder Leitfähigkeitseigenschaften gebildet ist, oder dass Bakteriorhodopsin-vermittelnde Änderungen des ph-Werts oder eine Kombination von irreversiblen NIR-aktiven photochromen Stoffen mit einer die elektrische Leitfähigkeit und/oder die magnetischen Eigenschaften verändernden Substanz zugrundegelegt werden.A further advantageous embodiment consists in the fact that the marking feature based on microencapsulated pigments is formed in a polymer matrix with near infrared (NIR) -sensitive and irreversibly changeable color and / or conductivity properties, or that bacteriorhodopsin-mediating changes in the pH or a combination of irreversible NIR-active photochromic substances are based on a substance which changes the electrical conductivity and / or the magnetic properties.

Vorzugsweise ist das Markierungsmerkmal am Wert- oder Sicherheitsdokument grafisch derart ausgebildet, dass die visuell erkennbare und physikalisch detektierbare Änderung auf lokale Bereiche des Dokuments begrenzt ist, insbesondere dass das Markierungsmerkmal randseitig einen geschlossenen Rahmen um das Wert- oder Sicherheitsdokument bildet. Damit läßt sich auch rein visuell auf einen Blick feststellen, ob die Entwertung ordnungsgemäß erfolgt ist.Preferably, the marking feature on the value or security document is graphically designed such that the visually detectable and physically detectable change is limited to local areas of the document, in particular that the marking feature a margin closed frame around the value or security document. This makes it possible to determine visually at a glance whether the devaluation has taken place properly.

Für das Anbringen des Markierungsmerkmals am Wert- oder Sicherheitsdokument ergeben sich eine Reihe von Ausführungsformen: So können über dem Markierungsmerkmal noch weitere, zumindest halb durchscheinende und transparente, insbesondere NIR-transparente Druckschichten angeordnet sein, oder es kann das Markierungsmerkmal am Wert- oder Sicherheitsdokument in eine unterseitige Kleberbeschichtung integriert sein, wobei das Wert- oder Sicherheitsdokument so ausgebildet sein muss, dass ein Farbumschlag von der Oberseite aus deutlich feststellbar ist.For the attachment of the marking feature on the value or security document, a number of embodiments result: For example, further, at least semi-translucent and transparent, in particular NIR-transparent printed layers can be arranged above the marking feature, or the marking feature can be attached to the value or security document a bottom-side adhesive coating to be integrated, wherein the value or security document must be designed so that a color change from the top is clearly noticeable.

Das Markierungsmerkmal läßt sich vorteilhafterweise auf der Oberfläche des Wert- oder Sicherheitsdokuments vollflächig mittels geeigneter Beschichtungstechniken, insbesondere durch Streichen aufbringen oder in eine rapportierende grafischer Darstellung einbinden. Als Drucktechniken können Offset, Letterset, Flexo, Siebdruck, Stichtiefdruck, Rastertiefdruck, Inkjet us. angewendet werden.The marking feature can advantageously be applied to the surface of the value or security document over the entire surface by means of suitable coating techniques, in particular by brushing, or incorporated into a reporting graphical representation. Offset, Letterset, Flexo, screen printing, intaglio printing, gravure printing, inkjet us. be applied.

Eine besonders fälschungssichere und gut detektierbare Weiterbildung der Erfindung besteht darin, dass das Markierungsmerkmal als kreisartige Bahn ausgebildet ist, die nach NIR-Bestrahlung eine Induktionsschleife bildet.A particularly tamper-proof and well detectable development of the invention is that the marking feature is designed as a circular path, which forms an induction loop after NIR irradiation.

In dem erfindungsgemäßen System wird das Sicherheitsmerkmal vorzugsweise auf der Basis eines lichtbeständigen Lumineszenzleuchtstoffs gebildet, der einer Druckfarbe zur grafischen Gestaltung des Wert- oder Sicherheitsdokuments beimischbar und mittels des Verifikationssensors detektierbar ist, wobei der Lumineszenzleuchtstoff aus einem Antistokes-Leuchtstoff gebildet ist, der mittels NIR-Strahlung angeregt werden kann, und dessen Emissionsbanden im sichtbaren und/oder NIR-Wellenlängenbereich intensitätsmäßig und/oder zeitaufgelöst zur Echtheitsüberprüfung verwendet werden.In the system according to the invention, the security feature is preferably formed on the basis of a light-resistant luminescent phosphor which is admixable with a printing ink for graphic design of the security document and detectable by means of the verification sensor, wherein the luminescent phosphor is formed from an anti-Stokes phosphor, which by means of NIR Radiation can be excited, and its emission bands in the visible and / or NIR wavelength range intensity and / or time resolved for authenticity verification.

Mit Vorteil kann in dem erfindungsgemäßen System ein zeilenförmiges Verifikationssystem auf der Basis einer Sensor-IC-Zeile oder einer reihenförmigen Anordnung von Laserdioden gemäß der zeitgleich angemeldeten Erfindung B81941DE, auf die ausdrücklich Bezug genommen wird, eingesetzt werden.Advantageously, in the system according to the invention a line-shaped verification system on the basis of a sensor IC line or a series arrangement of laser diodes according to the simultaneously filed invention B81941DE, to which reference is expressly made, are used.

Das Markierungssystem des erfindungsgemäßen Entwertungs- und Verifikationssystems umfasst bevorzugt eine zeilenförmig angeordnete NIR-Lichtquelle die elektromagnetische Strahlung im Wellenlängenbereich von etwa 200 nm bis etwa 1400 nm abstrahlt. Das Markierungssystem kann dabei aus einer oder mehreren Zeilen von NIR-LEDs oder NIR-Laserdioden bestehen.The marking system of the validation and verification system according to the invention preferably comprises a line-shaped NIR light source which emits electromagnetic radiation in the wavelength range from about 200 nm to about 1400 nm. The marking system can consist of one or more rows of NIR LEDs or NIR laser diodes.

Vorteilhafterweise umfasst das System außer dem Verifikationssensor und dem Markierungssystem einen Kontrollsensor, mit dem die visuell erkennbare und physikalisch detektierbare Änderung überprüft wird. Dies kann sich unmittelbar an die Markierung anschließen, aber auch in einem getrennten Prüfverfahren erfolgen. Der Kontrollsensor enthält dabei vorzugsweise einen Farbsensor, der die optische Veränderung des Markierungsmerkmals kontrolliert und einen Sensor zur Überprüfung der physikalischen Veränderung des Markierungsmerkmals, insbesondere einen Sensor zur Überprüfung der elektrischen Leitfähigkeit des Markierungsmerkmals, vorzugsweise einen Sensor, der eine oder mehrere Induktionsschleifen messtechnisch auswertet.Advantageously, in addition to the verification sensor and the marking system, the system includes a control sensor with which the visually detectable and physically detectable change is checked. This can be directly connected to the marking, but also be carried out in a separate test method. The control sensor preferably contains a color sensor which controls the optical change of the marking feature and a sensor for checking the physical change of the marking feature, in particular a sensor for checking the electrical conductivity of the marking feature, preferably a sensor which metrologically evaluates one or more induction loops.

Das erfindungsgemäße System zur Echtheitsüberprüfung und zur Markierung von Wert- oder Sicherheitsdokumenten bezieht sich vorzugsweise auf frankierte Briefe, insbesondere Groß- oder Maxibriefe, wobei das Wertdokument aus einer Briefinarke besteht, die automatisch auf Vorhandensein und Echtheit überprüft und anschließend irreversibel entwertet wird. Der Sicherheitsmerkmalsstoff kann dabei in der Druckfarbe einer grafisch gestalteten Wertmarke enthalten sein oder kann vor dem Druck oder zwischen einzelnen Drucken vollflächig, lokal (stückweise) oder berandend aufgebracht werden.The system according to the invention for checking the authenticity and for marking value or security documents preferably relates to franked letters, in particular large letters or maximum letters, the document of value consisting of a letter bank which automatically opens Presence and authenticity checked and then irreversibly canceled. The security feature substance may be contained in the printing ink of a graphically designed token or may be applied over the entire surface, locally (piecewise) or bounding before printing or between individual prints.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels.Further features and advantages of the invention will become apparent from the following description of an embodiment.

Es zeigen:

Fig. 1:
eine erfindungsgemäße Vorrichtung zur Verifikation, Markierung und Kontrolle von Wert- und Sicherheitsdokumenten gemäß einem ersten Ausführungsbeispiel;
Fig. 2:
ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung; und
Fig. 3:
den Träger mit dem Wertdokument in Draufsicht.
Show it:
Fig. 1:
an inventive device for verification, marking and control of value and security documents according to a first embodiment;
Fig. 2:
a further embodiment of the device according to the invention; and
3:
the carrier with the value document in plan view.

In Fig. 1 ist eine Ausführungsform der Vorrichtung zur Verifikation, Markierung und Kontrolle von Wert- oder Sicherheitsdokumenten schematisch dargestellt. Der auf einem Transportband 6 einer automatischen Briefsortieranlage liegende Träger 3, ein Brief, Groß- oder Maxibrief ist mit einem Wertdokument 2 in Gestalt einer Briefmarke versehen, welche ein Sicherheitsmerkmal 4 und ein Markierungsmerkmal 5 enthält. Mit dem Transportband 6 wird der Träger 3 unter einem zeilenförmigen Verifikationssensor 7, einem zeilenförmigen Markierungssystem 8 und wahlweise unter einem Kontrollsensor 9 hindurchbewegt. Die Geschwindigkeit kann dabei bis zu 4 m/sec und darüber betragen.In Fig. 1 an embodiment of the device for verification, marking and control of value or security documents is shown schematically. The lying on a conveyor belt 6 an automatic letter sorting system carrier 3, a letter, large or maxi letter is provided with a document of value 2 in the form of a stamp, which contains a security feature 4 and a marker 5. With the conveyor belt 6, the carrier 3 is moved under a line-shaped Verificationssensor 7, a line-shaped marking system 8 and optionally under a control sensor 9. The speed can be up to 4 m / sec and above.

Der Verifikationssensor 7 überprüft, ob auf dem Wertdokument 2 das Sicherheitsmerkmal 4 vorhanden ist. Er ermittelt zugleich die Anzahl der vom Transportband 6 angelieferten Wertdokumente 2 und deren Positionierung auf dem Träger 3. Diese Information wird an einen Leitrechner und von dort oder direkt, in Form eines Steuersignals an das Markierungssystem 8 weitergegeben.The verification sensor 7 checks whether the security feature 4 is present on the value document 2. He also determines the number of vom This information is transmitted to a master computer and from there or directly, in the form of a control signal to the marking system 8.

Das Markierungssystem 8 wird durch das Steuersignal kurzzeitig im Bereich der Wertdokumente aktiviert. Dies bewirkt einen irreversiblen Farbumschlag und die Erhöhung der Leitfähigkeit im Markierungsmerkmal 5. Das Markierungssystem 8 ist vorzugsweise zeilenförmig als Balken und für ein schnelles Ein- und Ausschalten ausgebildet. Letzteres ergibt sich nicht nur aus der Sicht des Energieverbrauchs sondern auch aus sicherheitstechnischen Überlegungen, damit im Falle eines Staus von Trägern deren Beschädigung und ggfs ein Brand vermieden werden. Das Markierungssystem 8 umfast deshalb NIR-LED-Anordnungen oder Laser-Dioden, weil diese mit extrem kurzen Pulsen betrieben werden können. Der Pfeil gibt die Transportrichtung an.The marking system 8 is activated by the control signal for a short time in the area of the value documents. This causes an irreversible color change and the increase in the conductivity in the marking feature 5. The marking system 8 is preferably formed as a line in the form of bars and for rapid switching on and off. The latter arises not only from the point of view of energy consumption but also for safety considerations, so that in case of congestion of carriers their damage and possibly a fire can be avoided. The marking system 8 therefore includes NIR LED arrays or laser diodes because they can be operated with extremely short pulses. The arrow indicates the transport direction.

In Fig. 2 ist ein Ausführungsbeispiel gezeigt, das dem gemäß Fig. 1 ähnlich ist, mit dem Unterschied, dass die Markiereinheit wegfällt. Der Laserstrahl der Verifikationseinheit 7 provoziert sowohl Lumineszenz als auch photochemisch induzierte Umwandlung des Markierungsmerkmals 5. Die Voraussetzung dafür ist: Die Zeitkonstante der Verifikation/Lumineszenz (z.B. wenige µs) ist um Größenordnungen kleiner als die Zeitkonstante der photochemischen Reaktion, (z.B. wenige ms). Der Pfeil gibt die Transportrichtung an.In Fig. 2 an embodiment is shown that according to Fig. 1 is similar, with the difference that the marking unit is omitted. The laser beam of the verification unit 7 provokes both luminescence and photochemically induced conversion of the marking feature 5. The prerequisite for this is: The time constant of the verification / luminescence (eg a few μs) is orders of magnitude smaller than the time constant of the photochemical reaction (eg a few ms). The arrow indicates the transport direction.

Fig. 3 zeigt das Transportband 6 in Draufsicht, mit dem Träger 3 in Form eines Maxibriefs, auf dem an nicht exakt vorgegebener Stelle eine Briefmarke 2 aufgebracht ist. Die Briefinarke enthält ein Sicherheitsmerkmal 4, das hier grafisch in der Kontur eines Hauses enthalten ist, sowie ein Markierungsmerkmal 5, das als äußerer geschlossener Rahmen dargestellt ist. Der Verifikationssensor 7 muss dabei in der Lage sein das mit einem sehr geringen Füllgrad in der Druckfarbe der Kontur ("Haus") enthaltene Sicherheitsmerkmal sehr schnell zu detektieren, da unmittelbar danach das Markierungssystem 8 ein Freigabesignal zur Auslösung des Markierung- und Entwertungsvorgangs benötigt. Fig. 3 shows the conveyor belt 6 in plan view, with the carrier 3 in the form of a Maxibriefs, on which at not exactly predetermined location a stamp 2 is applied. The letter salary contains a security feature 4, which is shown here graphically in the outline of a house, and a marker 5, which is shown as an outer closed frame. The Verificationssensor 7 must be able to do that with a very low degree of filling in the ink of the contour ("house") included Security feature to detect very quickly, because immediately after the marking system 8 requires a release signal to trigger the marking and validation process.

Grundsätzlich kann die Anordnung auch so ausgeführt sein, dass zwischen Verifikationssensor 7 und Markierungssystem 8 eine Weiche für abgewiesene Träger eingerichtet ist und das Markierungssystem 8 automatisch bei einer sensorischen Erkennung eines Wertdokuments aktiviert wird.In principle, the arrangement can also be embodied such that a switch for rejected carriers is set up between the verification sensor 7 and the marking system 8 and the marking system 8 is automatically activated upon sensory recognition of a value document.

Zur Erhöhung der Markierungsgeschwindigkeit und/oder zur Reduktion der erforderlichen elektromagnetischen Strahlung kann innerhalb oder unterhalb des Markierungsmerkmals eine wärmekapazitätsarme absorbierende Schicht, insbesondere auf Basis von mit Aluminium beschichteten Glimmer-Plättchen eingebaut werden. Grundsätzlich können dafür alle für die Lasermarkierung bei 1064 nm üblichen Initiatoren in einer polymeren Matrix verwendet werden. Vielfach werden in diesen Systemen Glimmer-Plättchen mit einem NIR-Absorber und einer Polymer-Verkapselung in einer entsprechend höher schmelzbaren Polymermatrix eingesetzt.To increase the marking speed and / or to reduce the required electromagnetic radiation, a heat-absorbent layer, in particular based on aluminum-coated mica platelets, can be incorporated inside or below the marking feature. In principle, all initiators customary for laser marking at 1064 nm can be used in a polymeric matrix. In many cases, mica platelets with an NIR absorber and a polymer encapsulation in a correspondingly higher meltable polymer matrix are used in these systems.

Während Markierungsmerkmale auf der Basis eines Farbumschlagsystems mit gleichzeitiger Erhöhung der Leitfähigkeit einige hundert Grad Celsius benötigen, werden bei Beaufschlagung mit einem ND:YAG Laserstrahl im Inneren des (verkapselten) Glimmer-Plättchens bis über 1500 °C erreicht. Die Wärmekapazität ist allerdings sehr gering. Die Verkapselung wird bei diesem Vorgang karbonisiert, wobei auch sehr feine Strukturen generiert werden können. Für die vorliegenden Anwendungen in Markierungsmerkmalen werden derartige Glimmer-Plättchen in geeigneter Größe und mit geeignetem Füllgrad für die effiziente Umsetzung der elektromagnetischen Strahlung (NIR-Strahlung) in thermische Energie verwendet.While marking features based on a color change system with a simultaneous increase in conductivity require several hundred degrees Celsius, exposure to an ND: YAG laser beam inside the (encapsulated) mica wafer reaches up to more than 1500 ° C. The heat capacity is very low. The encapsulation is carbonized during this process, whereby very fine structures can be generated. For the present labeling applications, such mica platelets of suitable size and filling level are used for efficient conversion of electromagnetic radiation (NIR radiation) to thermal energy.

Um die Markierung visuell deutlich zu machen, ist das Markierungsmerkmal vorzugsweise auf bestimmte lokale Bereiche des Wertdokuments, bspw. auf den in Fig. 2 dargestellten Rahmen begrenzt. Der Zustand der Entwertung kann dann mit einem kurzen Kontrollblick festgestellt werden. Die Markierung kann aber auch in andere grafische Elemente oder in ein rapportierendes Druckgebilde eingebunden sein. Die Markierung kann andererseits auch vollflächig auf dem Dokumentensubstrat mit geeigneten Beschichtungsmethoden, wie Streichen oder Lackieren aufgebracht sein, wobei dieser Vorgang sowohl vor wie auch nach der grafischen Gestaltung der Briefmarke erfolgen kann. Ebenso ist es möglich die Markierung rückseitig in die Klebeschicht zu integrieren, wobei die Vorderseite der Briefmarke grafisch derart ausgeführt ist, dass nach der Entwertung ein entsprechend deutlicher Farbumschlag von der Vorderseite aus erkennbar ist.To make the mark visually clear, the marking feature is preferably on certain local areas of the value document, for example the in Fig. 2 limited limits. The condition of the cancellation can then be determined with a brief inspection. However, the marking can also be integrated in other graphic elements or in a rapporting printed image. On the other hand, the marking can also be applied over the entire surface of the document substrate with suitable coating methods, such as brushing or painting, whereby this process can take place both before and after the graphic design of the stamp. It is also possible to integrate the marking back into the adhesive layer, wherein the front of the stamp is graphically designed so that after the devaluation a correspondingly clear color change from the front can be seen.

Claims (15)

  1. System for authenticity examination and for marking valuable or security documents (2), wherein the valuable or security document (2) contains at least one security feature (4) and is provided on a carrier (3), wherein the security feature (4) comprises at least one marking feature (5), having a verification sensor (7), wherein, in the case that the verification sensor (7) detects the authenticity of the security feature (4), said sensor outputs a signal for the marking cancellation to a marking system (8), whereby the marking feature (5) undergoes a visually identifiable irreversible change, which consists in a change of colour, and a physically detectable irreversible change, and wherein a check sensor (9) is provided with which the visually identifiable and the physically detectable changes are examinable, wherein the check sensor (9) contains a colour sensor which checks the optical change of the marking feature (5) and comprises a further sensor for checking the physical change of the marking feature (5),
    characterized
    - in that the carrier (3) including the valuable or security document (2) that is situated thereon is moved relative to the verification sensor (7) using a transport system (6),
    - in that the marking feature (4) is formed on the basis of microencapsulated pigments in a polymer matrix having NIR-sensitive and irreversibly changeable colour and conductivity properties, wherein the microencapsulated pigments contain platelets of mica coated with aluminium,
    - in that the physically detectable irreversible change consists of a change of the electrical conductivity, and
    - in that the check sensor (9) checks the electrical conductivity of the marking feature (5).
  2. System according to Claim 1, wherein the visually identifiable and physically detectable change comes about due to electromagnetic radiation, in particular in the wavelength range of 200 nm to 1500 nm.
  3. System according to Claim 1 or 2, in which the verification sensor (7) and the marking system (8) form one unit.
  4. System according to one of Claims 1 to 3, wherein the marking feature (5) on the valuable or security document (2) is configured graphically such that the visually identifiable and physically detectable change is limited to local regions of the document, in particular such that the marking feature (5) at the periphery forms a closed frame around the valuable or security document.
  5. System according to one of Claims 1 to 4, wherein the marking feature (5) on the valuable or security document (2) is integrated in a bottom-side adhesive coating, and the valuable or security document (2) is configured such that a colour change is visible from the top side.
  6. System according to one of Claims 1 to 5, wherein the marking feature (5) on the surface of the valuable or security document is coated over the full area by way of painting.
  7. System according to one of Claims 1 to 6, wherein the marking feature (5) is configured in the form of a repeating graphic representation.
  8. System according to one of Claims 1 to 7, wherein the marking feature (5) is configured in the form of a circular path which, after NIR irradiation, forms an induction loop.
  9. System according to one of Claims 1 to 8, wherein the security feature (4) is formed on the basis of a light-resistant luminescence phosphor, which may be admixed to a printing ink for graphically forming the valuable or security document (2) and is detectable using the verification sensor (7).
  10. System according to Claim 9, wherein the luminescence phosphor is formed from an anti-Stokes phosphor, which can be excited using NIR radiation and the emission bands of which in the visible and/or NIR wavelength range are used in terms of intensity and/or in time-resolved fashion for the authenticity examination.
  11. System according to one of Claims 1 to 10, wherein a line-type verification system on the basis of a sensor IC line or a row-type array of laser diodes is provided.
  12. System according to one of Claims 1 to 11, wherein the marking system (8) comprises an NIR light source that is arranged in line-type fashion in the wavelength range of approximately 200 nm to approximately 1400 nm.
  13. System according to Claim 12, wherein the marking system (8) consists of one or more lines of NIR LEDs or NIR laser diodes.
  14. System according to one of Claims 1 to 13, wherein the check sensor (9) metrologically evaluates one or more induction loops.
  15. System according to one of Claims 1 to 14, wherein the carrier (3) is a letter, in particular a large or maxi letter, and the valuable document (2) consists of a postage stamp.
EP05716222.4A 2004-04-30 2005-03-18 System for the real-time verification and the marking of valuable documents or security documents Active EP1741067B1 (en)

Applications Claiming Priority (2)

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DE102004021396.8A DE102004021396B4 (en) 2004-04-30 2004-04-30 Authentication system and marking of value or security documents
PCT/EP2005/002939 WO2005109349A1 (en) 2004-04-30 2005-03-18 System for the real-time verification and the marking of valuable documents or security documents

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US20070138295A1 (en) * 2005-12-21 2007-06-21 White Daniel F Method for authenticating an item

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DD301547A7 (en) * 1987-04-09 1993-03-04 Leipzig Tech Hochschule METHOD FOR PRODUCING CONDUCTIVE STRUCTURES IN POLY (ORGANYLHETEROACETYLENE)
US5286061A (en) * 1992-10-09 1994-02-15 Scientific Games, Inc. Lottery ticket having validation data printed in developable invisible ink
AT403967B (en) * 1992-11-18 1998-07-27 Oesterr Nationalbank DOCUMENT AND FILM STRUCTURE FOR PRODUCING A DOCUMENT
US5667249A (en) * 1995-09-05 1997-09-16 Pitney Bowes Inc. Stamp incorporating electronic article surveillance technology
DE19801589C2 (en) * 1998-01-17 2001-02-01 Bundesdruckerei Gmbh Process for the tamper-proof production of value and security documents
DE19833746A1 (en) * 1998-07-27 2000-02-03 Joergen Brosow Security paper and method for checking authenticity of documents recorded on it protects securities like bank notes against forgery by using embedded electronic switching circuit
DE10047051A1 (en) * 2000-09-22 2002-04-11 Bundesdruckerei Gmbh Procedure for the validation of biochemically coded value and security documents
DE10217120A1 (en) * 2002-03-14 2003-09-25 Tesa Ag Information hiding label
GB201215002D0 (en) 2012-08-23 2012-10-10 Corp Method of cutting super-hard materials

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DE102004021396A1 (en) 2005-11-24
WO2005109349A1 (en) 2005-11-17
DE102004021396B4 (en) 2018-02-15

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