EP1241021A2 - Document of value and/or security document - Google Patents

Document of value and/or security document Download PDF

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Publication number
EP1241021A2
EP1241021A2 EP02005017A EP02005017A EP1241021A2 EP 1241021 A2 EP1241021 A2 EP 1241021A2 EP 02005017 A EP02005017 A EP 02005017A EP 02005017 A EP02005017 A EP 02005017A EP 1241021 A2 EP1241021 A2 EP 1241021A2
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EP
European Patent Office
Prior art keywords
value
security document
speed verification
verification according
speed
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
EP02005017A
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German (de)
French (fr)
Other versions
EP1241021B1 (en
EP1241021A3 (en
Inventor
Oliver Dr. Muth
Helge Brockmann
Wolfgang Schmidt
Anett Dr. Bailleu
Gabriele Brauer
Manfred Dr. Paeschke
Benedikt Dr. Ahlers
Arnim Franz-Burgholz
Hans Zerbel
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Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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Publication of EP1241021A2 publication Critical patent/EP1241021A2/en
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Publication of EP1241021B1 publication Critical patent/EP1241021B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects

Definitions

  • the invention relates to a value and / or security document of the type of the independent claim.
  • Such documents are special Postage stamps on letters, parcels and other packaging in the Mail sorting machines are isolated. The one when separating and sorting Achieved, high speeds have so far verified the authenticity of the Postage stamp prevented.
  • value and / or Security documents banknotes, ID cards, passports, packaging, labels and Stickers, tickets, tickets and other tickets, tax signs as well To understand stocks.
  • the following Disclosure all printable and otherwise with security features foreseeable products, such as packaging, as value and / or Viewed security documents.
  • up-conversion elements (hereinafter referred to as up-conversion elements or UC elements) were first published in 1974 by MALMBERG et al. mentioned in a priority Swedish application (corresponding to DE 2 547 768). However, high-speed verification at speeds such as are customary nowadays with mail sorting machines was not possible.
  • the invention provides that the UC-active security elements during the Printing process applied directly to the surface of the substrate become.
  • the value and / or security document according to the invention with the features of the independent claim has the advantage that the authenticity of such value and / or Security documents can be machine-verified. Furthermore it is advantageous that the speed of such verification is so high can be chosen that a large number of value and / or Security documents can be verified in a short time. Also advantageous is to choose small particle sizes of the pigments, as this is a better one Miscibility with other components of the value document is possible. They therefore allow the design of different security printing motifs and their high-speed verification by means of NIR light excitation and Detection of the emission bands in different wavelength ranges.
  • the value and / or security document according to the invention with anti-Stokes phosphors have the further advantage that the response and decay behavior of the Anti-Stokes phosphor is adjustable so that automatic verification with the UC phosphor (up-conversion phosphor, other name for Anti-Stokes phosphor) as a security feature Security document is possible. It is particularly necessary that Verification can achieve high speeds. The arrival and For this, the decay behavior must depend on both the pulse frequency of the laser and in Be optimizable with respect to detectable intensities of the emitted radiation.
  • Another advantage is that the intensity ratios between the individual emission line groups of the anti-Stokes phosphor can be varied.
  • the Yb and Tm concentrations for high readout speeds are selected within the following limits: (Gd 1-xy ) 2 O 2 S: Yb x , Tmy with 0.05 ⁇ x ⁇ 0.80 and 0.0001 ⁇ y ⁇ 0.10, and advantageous for reading speeds between 3 and 6 m / s with: 0 20 ⁇ x ⁇ 0.60 and 0.0001 ⁇ y ⁇ 0.05.
  • Such an anti-Stokes luminophore for a security document has a quick verification by means of pulsed Laser matched optimal effective intensity.
  • the luminescent security feature is preferably made up of individual ones Dots and lines designed graphically.
  • the anti-Stokes phosphor used is a thulium-activated and ytterbium-codotated gadolinium oxysulfide of the composition (Gd 1-xy Yb x Tm x ) 2 O 2 S or also (other spelling) (Gd 1-xy ) 2 O 2 S: Yb x , Tm y where, instead of the gadolinium, at least some of the yttrium and / or lanthanum can also be used as the basic grid (host grid, matrix) material.
  • the phosphor is able to convert comparatively low-energy infrared (IR) excitation radiation into higher-energy radiation (up-conversion or anti-Stokes effect). (Up-conversion is abbreviated below by UC.)
  • IR infrared
  • UC anti-Stokes effect
  • the emission spectrum of the phosphor shows linear emissions after laser excitation.
  • the observed emission lines correspond to the known transitions between the different excitation levels of the Tm 3+ ions and the corresponding ground state.
  • the intensity relationships between the individual line groups can vary; they depend on the specific phosphor composition, in particular on the ytterbium or thulium concentration.
  • the up-conversion elements are in the form of small ones inorganic particles smaller than 5 ⁇ m, in particular smaller than 3 ⁇ m and in particular smaller than 2 ⁇ m can be used.
  • the response and decay characteristics of the Anti-Stokes phosphor used to a high degree over the achievable Detection reliability and the possible readout speed of a machine luminescence feature to be tested can e.g. through the Time required to reach the 90% saturation intensity is or by the so-called attack constant (duration for the Reaching 1 / e-th of the stationary luminescence intensity) marked become.
  • the response time of the anti-Stokes luminescence is allowed not exceed a certain value if one is above the Sensitivity threshold of the detector lies effective luminescence intensity should be secured.
  • This effective value of the intensity is determined by the relation determined between the stationary intensity and the response time.
  • the relationships between the saturation intensity and the rise and fall times can be varied within a wide range.
  • the ytterbium and / or thulium concentrations are set so that the interactions between these ions already lead to a partial quenching of the anti-Stokes luminescence (quenching of the concentration).
  • the anti-Stokes phosphor's response and decay behavior can be set so that an automatic verification of the the anti-Stokes phosphor as a security feature Security document is possible. It is particularly necessary that Verification can achieve high speeds.
  • the arrival and For this, the decay behavior must depend on both the pulse frequency of the laser and in Be optimizable with respect to detectable intensities of the emitted radiation.
  • the high-speed verification is preferably carried out by the Measurement of the anti-Stokes emission spectrum in the visible and not visible wavelength range through non-contact measurement.
  • the Intensity ratios of the emission bands and the approach and. Cooldowns are dependent parameters, so the fluorescent substance can be checked for authenticity.
  • Any print motifs can be produced and the up-conversion is included Elements in at least one of the printing inks in the form of small inorganic Particles incorporated.
  • the body colors of the printing inks are in shape with the up-conversion elements of inorganic particles can be designed as desired and are only slightly affected by influences the admixture of the inorganic particles.
  • the up-conversion elements are in shape of inorganic particles in the substrate of value and / or Security document integrated and / or in the near-surface area of a such substrates in the form of brushing, coating, spraying, spinning, Dipping, laminating, extruding surface coating, etc. incorporated.
  • One with anti-Stokes luminophores provided layer can also be a layer of at least one other layer is covered. It is important here that a Layer covering the layer provided with anti-Stokes luminophores, at least for the stimulating electromagnetic radiation and for the emitted one electromagnetic radiation is permeable. You can do this in a first Embodiment layers come into question that have a broadband Have permeability. In another embodiment, you can also Foils are used that are only used for electromagnetic radiation certain, predetermined wavelength ranges are transparent.
  • the packing density i.e. the area coverage
  • the anti-Stokes luminophores should be chosen so that at least one anti-Stokes luminophore in one Area of the size of the measurement window is present, with the area coverage is largely determined by the printing process and the printed motif.
  • Excitation density is a high degree of area coverage and a comparative one Large layer thickness is an advantage.
  • the excitation density is largely determined by Coverage and less by increasing the UC pigment concentration in the Color determines.
  • the cover is made up of the two-dimensional Parameter area coverage and the three-dimensional parameter Layer thickness of the paint, varnish or coating together.
  • the Coverage i.e. the area coverage and the layer thickness are thereby largely determined by the printing process used.
  • the area coverage necessary for the later detection is included not necessarily by increasing the pigment concentration in the color compensated.
  • adding the anti-Stokes luminophore to a color further important that the color components are not the emitted and electromagnetic radiation to be subsequently detected is noteworthy absorbed. If, for example, the visible radiation is detected, may not contain any color components that the visible radiation in the absorb significant wavelength range of interest. This applies analogously of course also for invisible electromagnetic radiation to be detected.
  • the up-conversion elements are in the form of inorganic particles especially in the case of postage stamps in the Adhesive coating or rubber glue installed and can by means of Laser beam excitation can be excited through the paper substrate. As a result, the anti-Stokes emission can pass through the paper substrate be verified.
  • the printing inks with the anti-Stokes luminophores are produced in such a way that first of all from the anti-Stokes luminophores and the printing process adapted varnishes a paste is generated.
  • This paste is then in so-called three-roller color grinders together with the other components the colors such as color pigments, additives, auxiliary substances etc. to the actual colors processed (flat, high and low pressure).
  • the pigment can also over Homogenization in the paint grinder can be incorporated directly into the paint.
  • the pigments are used in the corresponding process steps incorporated as an additional additive (example: Cellulose pulp plus pigment for papers doped with UC pigments).

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Luminescent Compositions (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Credit Cards Or The Like (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Printing Methods (AREA)
  • Conversion Of X-Rays Into Visible Images (AREA)

Abstract

Security documents for high-speed verification contain up-conversion elements in the form of small inorganic particles, applied near the surface of the document, which allow high-speed verification by near infrared (NIR) light stimulation and detection of the emission bands in the visible and NIR wavelength range. An Independent claim is also included for security documents for high-speed verification, which contain an up-conversion phosphor comprising a thulium-activated and ytterbium-codoped gadolinium oxysulfide of the composition:

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Wert- und/oder Sicherheitsdokument nach der Gattung des unabhängigen Anspruchs. Derartige Dokumente sind insbesondere Postwertzeichen, die auf Briefen, Päckchen und sonstigen Verpackungen in den Postsortiermaschinen vereinzelt werden. Die bei der Vereinzelung und Sortierung erreichten, hohen Geschwindigkeiten haben bisher eine Echtheitsverifikation des Postwertzeichens verhindert. Des weiteren sind unter derartigen Wert- und/oder Sicherheitsdokumenten Banknoten, Ausweise, Pässe, Verpackungen, Label und Aufkleber, Fahrausweise, Eintrittskarten und andere Tickets, Steuerzeichen sowie Aktien zu verstehen. Im weiteren Sinne werden im Rahmen der nachfolgenden Offenbarung alle bedruckbaren und sonst wie mit Sicherheitsmerkmalen versehbaren Erzeugnisse, beispielsweise Verpackungen, als Wert- und/oder Sicherheitsdokumente angesehen.The invention relates to a value and / or security document of the type of the independent claim. Such documents are special Postage stamps on letters, parcels and other packaging in the Mail sorting machines are isolated. The one when separating and sorting Achieved, high speeds have so far verified the authenticity of the Postage stamp prevented. Furthermore, such value and / or Security documents banknotes, ID cards, passports, packaging, labels and Stickers, tickets, tickets and other tickets, tax signs as well To understand stocks. In a broader sense, the following Disclosure all printable and otherwise with security features foreseeable products, such as packaging, as value and / or Viewed security documents.

Wert- und/oder Sicherheitsdokumente, versehen mit Anti-Stokes-Luminophoren (im folgenden als Up-conversion-Elemente bzw. UC-Elemente bezeichnet) wurden erstmals 1974 von MALMBERG et al. in einer prioritätsbegründenden schwedischen Anmeldung (entspr. DE 2 547 768) erwähnt.
Eine Hochgeschwindigkeits-Verifizierung bei Geschwindigkeiten, wie sie heutzutage bei Postsortiermaschinen üblich sind, war damit jedoch nicht möglich.Values and / or security documents provided with anti-Stokes luminophores (hereinafter referred to as up-conversion elements or UC elements) were first published in 1974 by MALMBERG et al. mentioned in a priority Swedish application (corresponding to DE 2 547 768).
However, high-speed verification at speeds such as are customary nowadays with mail sorting machines was not possible.

Vorteile der ErfindungAdvantages of the invention

Die Erfindung sieht vor, dass die UC-aktiven Sicherheitselemente während des Druckvorganges unmittelbar auf die Oberfläche des Substrats aufgebracht werden.The invention provides that the UC-active security elements during the Printing process applied directly to the surface of the substrate become.

Hierbei gibt es eine Reihe von verschiedenen Möglichkeiten, die alle als erfinderisch beansprucht werden. Dazu gehören anderen relevanten Druckverfahren, insbesondere der Flach-, Tief-, Hoch- und Durchdruck in den Ausführungen Offset, Rastertiefdruck, Stahlstichtiefdruck, indirekter Hochdruck (Letterset), Siebdruck, Non-lmpact-Drucktechniken und neuartige digitale Druckverfahren.There are a number of different options here, all as be claimed inventive. This includes other relevant printing processes, in particular the flat, gravure, high and through printing in the versions Offset, gravure printing, intaglio printing, indirect printing (Letterset), screen printing, non-impact printing techniques and novel digital Printing process.

Das erfindungsgemäße Wert- und/oder Sicherheitsdokument mit den Merkmalen des unabhängigen Anspruchs hat den Vorteil, dass die Echtheit derartiger Wertund/oder Sicherheitsdokumente maschinell verifiziert werden kann. Des weiteren ist vorteilhaft, dass die Geschwindigkeit einer derartigen Verifizierung so hoch gewählt werden kann, dass eine große Anzahl von Wert- und/oder Sicherheitsdokumenten in kurzer Zeit verifiziert werden kann. Weiterhin vorteilhaft ist, die Teilchengrößen der Pigmente klein zu wählen, da so eine bessere Mischbarkeit mit anderen Bestandteilen des Wertdokuments möglich ist. Sie erlauben daher die Gestaltung von unterschiedlichen Sicherheitsdruckmotiven und deren Hochgeschwindigkeitsverifikation mittels NIR-Licht-Anregung und Detektion der Emissionsbanden in verschiedenen Wellenlängenbereichen.The value and / or security document according to the invention with the features of the independent claim has the advantage that the authenticity of such value and / or Security documents can be machine-verified. Furthermore it is advantageous that the speed of such verification is so high can be chosen that a large number of value and / or Security documents can be verified in a short time. Also advantageous is to choose small particle sizes of the pigments, as this is a better one Miscibility with other components of the value document is possible. They therefore allow the design of different security printing motifs and their high-speed verification by means of NIR light excitation and Detection of the emission bands in different wavelength ranges.

Das erfindungsgemäße Wert- und/oder Sicherheitsdokument mit Anti-Stokes-Leuchtstoffen haben weiterhin den Vorteil, dass das An- und Abklingverhalten des Anti-Stokes-Leuchtstoffs so einstellbar ist, dass eine automatische Verifikation des mit dem UC-Leuchtstoff (Up-Conversion-Leuchtstoff, andere Bezeichnung für Anti-Stokes-Leuchtstoff) als Sicherheitsmerkmal versehenen Sicherheitsdokuments möglich ist. Dabei ist es insbesondere erforderlich, dass bei der Verifikation große Geschwindigkeiten erreicht werden können. Das An- und Abklingverhalten muss hierfür sowohl auf die Pulsfrequenz des Lasers als auch in Bezug auf detektierbare Intensitäten der emittierten Strahlung optimierbar sein.The value and / or security document according to the invention with anti-Stokes phosphors have the further advantage that the response and decay behavior of the Anti-Stokes phosphor is adjustable so that automatic verification with the UC phosphor (up-conversion phosphor, other name for Anti-Stokes phosphor) as a security feature Security document is possible. It is particularly necessary that Verification can achieve high speeds. The arrival and For this, the decay behavior must depend on both the pulse frequency of the laser and in Be optimizable with respect to detectable intensities of the emitted radiation.

Ein weiterer Vorteil besteht darin, dass die Intensitätsverhältnisse zwischen den einzelnen Emissionsliniengruppen des Anti-Stokes-Leuchtstoffs variierbar sind. Dabei sind die erreichbaren Intensitätsverhältnisse und das An- und Abklingverhalten voneinander abhängig, so dass bei Detektion dieser unterschiedlichen Größen eine eindeutige Identifizierung des Wert- und/oder Sicherheitsdokuments erreicht werden kann. Another advantage is that the intensity ratios between the individual emission line groups of the anti-Stokes phosphor can be varied. The achievable intensity ratios and the on and off Decay behavior dependent on each other, so that when this is detected different sizes a clear identification of the value and / or Security document can be achieved.

Beispielsweise wird die Yb- und die Tm- Konzentration für hohe Auslesegeschwindigkeiten in folgenden Grenzen gewählt:
(Gd1-x-y)2O2S:Ybx, Tmy mit 0,05 ≤ x ≤ 0,80 und 0,0001 ≤ y ≤ 0,10,
und vorteilhaft für Auslesegeschwindigkeiten zwischen 3 und 6 m/s mit: 0 20 ≤ x ≤ 0,60 und 0,0001 ≤ y ≤ 0,05. For example, the Yb and Tm concentrations for high readout speeds are selected within the following limits:
(Gd 1-xy ) 2 O 2 S: Yb x , Tmy with 0.05 ≤ x ≤ 0.80 and 0.0001 ≤ y ≤ 0.10,
and advantageous for reading speeds between 3 and 6 m / s with: 0 20 ≤ x ≤ 0.60 and 0.0001 ≤ y ≤ 0.05.

Ein derartiges Anti-Stokes-Luminophor, das für ein Sicherheitsdokument verwendet wird, besitzt eine auf eine schnelle Verifizierung mittels gepulstem Laser abgestimmte optimale effektive Intensität.Such an anti-Stokes luminophore for a security document is used, has a quick verification by means of pulsed Laser matched optimal effective intensity.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im unabhängigen Anspruch angegebenen Wert- und/oder Sicherheitsdokuments möglich:

  • 1. Anregung des UC-Systems durch eine extrem schmalbandige Lichtquelle (z.B. in Form eines IR-emittierenden Lasers mit spezifisch ausgewählter Wellenlänge), wobei zusätzlich Leuchtstoffe bzw. sog. Phosphorpuder beigemengt werden, ähnlich jener Verwendung in Leuchtstoffröhren, so daß damit Strahlung im sichtbaren Wellenlängenbereich erzeugt wird und vom menschlichen Auge ohne weitere Hilfsmittel wahrgenommen werden kann.
  • 2. In einer alternativen Ausführungsform ist statt dessen die Anregung durch IR-Strahlung mit geeigneter Wellenlänge für Materialien mit spezifischer IR-Absorption und Emission im sichtbaren Bereich vorgesehen. Es können auch OVI™-Pigmente (optisch variable Pigmente) oder Flüssigkristalle zusätzlich zu den UC-Pigmenten eingesetzt oder beigemischt werden.
    • The measures listed in the subclaims make advantageous developments and improvements of the value and / or security document specified in the independent claim possible:
  • 1. Excitation of the UC system by an extremely narrow-band light source (e.g. in the form of an IR-emitting laser with a specifically selected wavelength), with additional phosphors or so-called phosphor powders being added, similar to the use in fluorescent tubes, so that radiation in the visible Wavelength range is generated and can be perceived by the human eye without further aids.
  • 2. In an alternative embodiment, the excitation by IR radiation with a suitable wavelength is provided instead for materials with specific IR absorption and emission in the visible range. OVI ™ pigments (optically variable pigments) or liquid crystals can also be used or added to the UC pigments.

    • Das lumineszierende Sicherheitsmerkmal ist hierbei bevorzugt aus einzelnen Punkten und Linien grafisch gestaltet.The luminescent security feature is preferably made up of individual ones Dots and lines designed graphically.

    Es können darüber hinaus über/ unter/ neben den lumineszierenden Elementen entsprechend grafisch gestaltete, durchscheinende Farben angebracht werden und dadurch unterschiedliche Farb-Leuchteffekte erzielt werden. It can also be over / under / next to the luminescent elements appropriately graphically designed, translucent colors and thus different color lighting effects can be achieved.

    Bei dem verwendeten Anti-Stokes-Leuchtstoff (Synonyme: Anti-Stokes-Pigment, Anti-Stokes-Phosphor, Up-Conversion-Material) handelt es sich um ein Thulium-aktiviertes und Ytterbium-kodotiertes Gadoliniumoxysulfid der Zusammensetzung (Gd1-x-yYbxTmx)2O2S oder auch (andere Schreibweise) (Gd1-x-y)2O2S:Ybx, Tmy wobei anstelle des Gadoliniums zumindest anteilig auch Yttrium und/oder Lanthan als Grundgitter-(Wirtsgitter-, Matrix-) Material eingesetzt werden können.The anti-Stokes phosphor used (synonyms: anti-Stokes pigment, anti-Stokes phosphor, up-conversion material) is a thulium-activated and ytterbium-codotated gadolinium oxysulfide of the composition (Gd 1-xy Yb x Tm x ) 2 O 2 S or also (other spelling) (Gd 1-xy ) 2 O 2 S: Yb x , Tm y where, instead of the gadolinium, at least some of the yttrium and / or lanthanum can also be used as the basic grid (host grid, matrix) material.

    Der Leuchtstoff ist in der Lage, vergleichsweise energiearme infrarote (IR) Anregungsstrahlung in energiereichere Strahlung umzuwandeln (Up-Conversion bzw. Anti-Stokes-Effekt). (Up-Conversion wird im Folgenden durch UC abgekürzt.) Im sichtbaren und im infraroten Spektralbereich weist das Emissionsspektrum des Leuchtstoffes nach Laseranregung linienhafte Emissionen auf. Die beobachteten Emissionslinien korrespondieren mit den bekannten Übergängen zwischen den unterschiedlichen Anregungsniveaus der Tm3+-lonen und dem entsprechenden Grundzustand. Die Intensitätsverhältnisse zwischen den einzelnen Liniengruppen können variieren; sie hängen von der konkreten Leuchtstoffzusammensetzung, insbesondere von der Ytterbium- bzw. Thuliumkonzentration ab.The phosphor is able to convert comparatively low-energy infrared (IR) excitation radiation into higher-energy radiation (up-conversion or anti-Stokes effect). (Up-conversion is abbreviated below by UC.) In the visible and in the infrared spectral range, the emission spectrum of the phosphor shows linear emissions after laser excitation. The observed emission lines correspond to the known transitions between the different excitation levels of the Tm 3+ ions and the corresponding ground state. The intensity relationships between the individual line groups can vary; they depend on the specific phosphor composition, in particular on the ytterbium or thulium concentration.

    Hierbei wird es bevorzugt, wenn die Up-conversion Elemente in Form von kleinen anorganischen Partikeln kleiner 5 µm, insbesondere kleiner 3 µm und insbesondere kleiner 2 µm verwendet werden.It is preferred here if the up-conversion elements are in the form of small ones inorganic particles smaller than 5 µm, in particular smaller than 3 µm and in particular smaller than 2 µm can be used.

    Bei gepulster Anregung entscheidet die An- und Abklingcharakteristik des verwendeten Anti-Stokes-Leuchtstoffes in hohem Maße über die erreichbare Detektionssicherheit und die mögliche Auslesegeschwindigkeit eines maschinell zu prüfenden Lumineszenzmerkmals. Dabei kann das Anklingen z.B. durch die Zeitdauer, die für das Erreichen des 90 %Wertes der Sättigungsintensität benötigt wird oder aber durch die sogenannte Anklingkonstante (Zeitdauer für das Erreichen von 1/e-tel der stationären Lumineszenzintensität) gekennzeichnet werden.In the case of pulsed excitation, the response and decay characteristics of the Anti-Stokes phosphor used to a high degree over the achievable Detection reliability and the possible readout speed of a machine luminescence feature to be tested. The sound can e.g. through the Time required to reach the 90% saturation intensity is or by the so-called attack constant (duration for the Reaching 1 / e-th of the stationary luminescence intensity) marked become.

    Dabei zeigt sich, dass Anti-Stokes-Leuchtstoffe etwa im Vergleich zu Photo- oder Kathodoluminophoren im allgemeinen ein relativ langsames Anklingen aufweisen, das ggfs. bis zu einigen hundert µs reichen kann. Ein derart verzögertes Anschwellen der Lumineszenz greift natürlich beträchtlich in das Zeitverhalten des Anregungs- und Detektionssystems ein und zwar dergestalt, dass es die Detektionssicherheit und die Auslesegeschwindigkeit stark limitieren kann. Deshalb müssen Anregungsmodus und Lumineszenzkinetik auf die Zeitfunktionen des Detektionssystems und der Auswerteelektronik abgestimmt sein.It shows that anti-Stokes phosphors compared to photo or Cathodoluminophores generally have a relatively slow response, which can range up to a few hundred µs. Such a delayed one Swelling of the luminescence naturally affects the time behavior of the Excitation and detection system in such a way that it Detection reliability and the reading speed can severely limit. Therefore, the excitation mode and luminescence kinetics must be based on the time functions of the detection system and the evaluation electronics.

    Bei gegebener hoher Auslesegeschwindigkeit darf die Anklingzeit der Anti-Stokes-Lumineszenz einen bestimmten Wert nicht überschreiten, wenn eine über der Empfindlichkeitsschwelle des Detektors liegende effektive Lumineszenzintensität gesichert werden soll. Dieser Effektivwert der Intensität wird durch die Relation zwischen der stationären Intensität und die Anklingzeit bestimmt.Given the high readout speed, the response time of the anti-Stokes luminescence is allowed not exceed a certain value if one is above the Sensitivity threshold of the detector lies effective luminescence intensity should be secured. This effective value of the intensity is determined by the relation determined between the stationary intensity and the response time.

    Im Falle des UC-Pigmentes Gd2 O2S:Yb, Tm lassen sich die Verhältnisse zwischen der Sättigungsintensität und den An- und Abklingzeiten in einem weiten Bereich variieren. Insbesondere gelingt es, die für die Realisierung einer High-Speed-Detektion erforderlichen niedrigen Anklingzeiten sicher zu stellen. Zu diesem Zwecke werden die Ytterbium- und/oder Thuliumkonzentrationen so eingestellt, dass die Wechselwirkungen zwischen diesen lonen bereits zu einer anteiligen Löschung der Anti-Stokes-Lumineszenz (Konzentrationslöschung) führen.In the case of the UC pigment Gd 2 O 2 S: Yb, Tm, the relationships between the saturation intensity and the rise and fall times can be varied within a wide range. In particular, it is possible to ensure the low response times required for the implementation of high-speed detection. For this purpose, the ytterbium and / or thulium concentrations are set so that the interactions between these ions already lead to a partial quenching of the anti-Stokes luminescence (quenching of the concentration).

    Weitere Möglichkeiten der Beeinflussung der An- und Abklingcharakteristik liegen im gezielten Einbau von Störstellen in das Kationen- oder Anionenteilgitter des Leuchtstoffes. Hierbei ist wesentlich, dass das An- und Abklingverhalten des Anti-Stokes-Leuchtstoffs so einstellbar ist, dass eine automatische Verifikation des mit dem Anti-Stokes-Leuchtstoff als Sicherheitsmerkmal versehenen Sicherheitsdokuments möglich ist. Dabei ist es insbesondere erforderlich, dass bei der Verifikation große Geschwindigkeiten erreicht werden können. Das An- und Abklingverhalten muss hierfür sowohl auf die Pulsfrequenz des Lasers als auch in Bezug auf detektierbare Intensitäten der emittierten Strahlung optimierbar sein.There are further possibilities for influencing the decay and decay characteristics in the targeted installation of impurities in the cation or anion partial lattice of the Phosphor. It is essential here that the anti-Stokes phosphor's response and decay behavior can be set so that an automatic verification of the the anti-Stokes phosphor as a security feature Security document is possible. It is particularly necessary that Verification can achieve high speeds. The arrival and For this, the decay behavior must depend on both the pulse frequency of the laser and in Be optimizable with respect to detectable intensities of the emitted radiation.

    Letztendlich erfolgt die Hochgeschwindigkeitsverifikation bevorzugt durch die Messung des Anti-Stokes-Emissionsspektrums im sichtbaren und im nicht sichtbaren Wellenlängebereich durch berührungslose Messung. Dabei sind die Intensitätsverhältnisse der Emissionsbanden und die An- u. Abklingzeiten sind abhängige Parameter, somit ist der Leuchtstoff eineindeutig auf Echtheit prüfbar.Ultimately, the high-speed verification is preferably carried out by the Measurement of the anti-Stokes emission spectrum in the visible and not visible wavelength range through non-contact measurement. Here are the Intensity ratios of the emission bands and the approach and. Cooldowns are dependent parameters, so the fluorescent substance can be checked for authenticity.

    Es können nahezu alle produktionstechnisch relevanten Druckverfahren, insbesondere der Flach-, Tief-, Hoch- und Durchdruck in den Ausführungen Offset, Rastertiefdruck, Stahlstichtiefdruck, indirekter Hochdruck (Letterset), Siebdruck, Non-lmpact-Drucktechniken und neuartige digitale Druckverfahren. für die grafisch hochwertige Gestaltung verwendet werden.Almost all printing processes relevant to production technology, in particular the flat, gravure, high and through printing in the versions offset, Screen gravure, steel intaglio, indirect letterpress, screen printing, Non-impact printing techniques and novel digital printing processes. be used for the graphically high-quality design.

    Es sind beliebige Druckmotive herstellbar und dabei sind die Up-conversion Elemente mindestens in einer der Druckfarben in Form von kleinen anorganischen Partikeln eingearbeitet. Es wird hierbei ein Füllgrad im Bereich von 1 bis 30-Gewichts-%, insbesondere von 1 bis 20-Gewichts-% und bevorzugt von 5 bis 10-Gewichts-% verwendet, so dass die grafische und insbesondere farbliche Gestaltung nicht störend beeinflusst wird.Any print motifs can be produced and the up-conversion is included Elements in at least one of the printing inks in the form of small inorganic Particles incorporated. There is a degree of filling in the range of 1 to 30% by weight, in particular from 1 to 20% by weight and preferably from 5 to 10% by weight used so that the graphic and in particular color Design is not disrupted.

    Die Körperfarben der Druckfarben sind mit den Up-conversion Elementen in Form von anorganischen Partikeln beliebig gestaltbar und werden nur geringfügig durch die Beimischung der anorganischen Partikel beeinflusst.The body colors of the printing inks are in shape with the up-conversion elements of inorganic particles can be designed as desired and are only slightly affected by influences the admixture of the inorganic particles.

    In einer bevorzugten Ausführungsform sind die Up-conversion Elemente in Form von anorganischen Partikeln in das Substrat des Wert- und/oder Sicherheitsdokuments integriert und/oder in den oberflächennahen Bereich eines derartigen Substrates in Form von Streichen, Coaten, Spritzen, Schleudern, Tauchen, Laminieren, Extrudieren Oberflächenbeschichten, etc. eingearbeitet. In a preferred embodiment, the up-conversion elements are in shape of inorganic particles in the substrate of value and / or Security document integrated and / or in the near-surface area of a such substrates in the form of brushing, coating, spraying, spinning, Dipping, laminating, extruding surface coating, etc. incorporated.

    Sie können aber auch in Form einer Kleberbeschichtung oder einer (Oberflächen-)Lackbeschichtung aufgebracht werden. Eine mit Anti-Stokes-Luminophoren versehene Schicht kann auch eine Schicht sein, die von mindestens einer weiteren Schicht verdeckt ist. Wichtig hierbei ist, dass eine Schicht, die die mit Anti-Stokes-Luminophoren versehene Schicht bedeckt, zumindest für die anregende elektromagnetische Strahlung und für die emittierte elektromagnetische Strahlung durchlässig ist. Hierfür können in einem ersten Ausführungsbeispiel Schichten in Frage kommen, die eine breitbandige Durchlässigkeit besitzen. In einem weiteren Ausführungsbeispiel können ebenso Folien verwendet werden, die nur für elektromagnetische Strahlung in bestimmten, fest vorgegebenen Wellenlängenbereichen durchlässig sind.But you can also in the form of an adhesive coating or (Surface) lacquer coating can be applied. One with anti-Stokes luminophores provided layer can also be a layer of at least one other layer is covered. It is important here that a Layer covering the layer provided with anti-Stokes luminophores, at least for the stimulating electromagnetic radiation and for the emitted one electromagnetic radiation is permeable. You can do this in a first Embodiment layers come into question that have a broadband Have permeability. In another embodiment, you can also Foils are used that are only used for electromagnetic radiation certain, predetermined wavelength ranges are transparent.

    Die Packungsdichte, d.h. die Flächendeckung, der Anti-Stokes-Luminophoren sollte so gewählt sein, dass mindestens ein Anti-Stokes- Luminophor in einer Fläche der Größe des Messfensters vorliegt, wobei die Flächendeckung maßgeblich durch das Druckverfahren und das gedruckte Motiv bestimmt wird. Zur Erlangung einer für die Hochgeschwindigkeitsdetektion erforderlichen Anregungsdichte ist ein hoher Flächendeckungsgrad und eine vergleichsweise große Schichtdicke von Vorteil. Die Anregungsdichte wird dabei maßgeblich durch Bedeckung und weniger durch Erhöhung der UC-Pigment-Konzentration in der Farbe bestimmt. Dabei setzt sich die Bedeckung aus dem zweidimensionalen Parameter Flächendeckungsgrad und dem dreidimensionalen Parameter Schichtdicke der Farbe, des Lackes oder des Überzugs zusammen. Die Bedeckung, d.h. der Flächendeckungsgrad und die Schichtdicke werden dabei wesentlich durch das verwendete Druckverfahren bestimmt.The packing density, i.e. the area coverage, the anti-Stokes luminophores should be chosen so that at least one anti-Stokes luminophore in one Area of the size of the measurement window is present, with the area coverage is largely determined by the printing process and the printed motif. To obtain one required for high speed detection Excitation density is a high degree of area coverage and a comparative one Large layer thickness is an advantage. The excitation density is largely determined by Coverage and less by increasing the UC pigment concentration in the Color determines. The cover is made up of the two-dimensional Parameter area coverage and the three-dimensional parameter Layer thickness of the paint, varnish or coating together. The Coverage, i.e. the area coverage and the layer thickness are thereby largely determined by the printing process used.

    Die für die später erfolgende Detektion notwendige Flächendeckung ist dabei nicht zwangsläufig durch eine Erhöhung der Pigmentkonzentration in der Farbe kompensierbar. Bei der Beigabe des Anti-Stokes- Luminophors zu einer Farbe ist weiterhin von Bedeutung, dass die Farbbestandteile nicht die emittierte und anschließend zu detektierende elektromagnetische Strahlung nennenswert absorbiert. Sollte also beispielsweise die sichtbare Strahlung detektiert werden, dürfen keine Farbbestandteile enthalten sein, die die sichtbare Strahlung im interessierenden Wellenlängenbereich nennenswert absorbieren. Analog gilt dies natürlich auch für zu detektierende nicht sichtbare elektromagnetische Strahlung.The area coverage necessary for the later detection is included not necessarily by increasing the pigment concentration in the color compensated. When adding the anti-Stokes luminophore to a color further important that the color components are not the emitted and electromagnetic radiation to be subsequently detected is noteworthy absorbed. If, for example, the visible radiation is detected, may not contain any color components that the visible radiation in the absorb significant wavelength range of interest. This applies analogously of course also for invisible electromagnetic radiation to be detected.

    In der Ausführungsform mit UC-Pigmenten ergibt sich eine besondere empirische Abhängikeit des emittierten Signals von der Körperfarbe. Bei ansonsten gleichen Parametern wie Pigmentkonzentration in der Farbe, Motiv, Flächendeckung, Druckverfahren, Druckmaschinen nimmt das emittierende Signal in der Reihenfolge Cyan >> Magenta > Yellow > Klarfirnis zu.In the embodiment with UC pigments, there is a special empirical Dependence of the emitted signal on the body color. Otherwise the same Parameters such as pigment concentration in the color, motif, area coverage, Printing process, printing machines takes the emitting signal in the order Cyan >> Magenta> Yellow> Clear varnish too.

    In einer anderen Ausführungsform sind die Up-conversion Elemente in Form von anorganischen Partikeln insbesondere bei Postwertzeichen in die Kleberbeschichtung oder Gummierleimung eingebaut und können mittels Laserstrahlanregung durch das Papiersubstrat hindurch angeregt werden. Dadurch kann durch das Papiersubstrat hindurch die Anti-Stokes-Emission verifiziert werden.In another embodiment, the up-conversion elements are in the form of inorganic particles especially in the case of postage stamps in the Adhesive coating or rubber glue installed and can by means of Laser beam excitation can be excited through the paper substrate. As a result, the anti-Stokes emission can pass through the paper substrate be verified.

    Die Druckfarben mit den Anti-Stokes-Luminophoren werden derart hergestellt, dass zunächst aus den Anti-Stokes-Luminophoren und den den Druckverfahren angepassten Firnissen eine Paste erzeugt wird. Diese Paste wird dann in sogenannten Dreiwalzenfarbreibstühlen zusammen mit den übrigen Bestandteilen der Farben wie Farbpigmente, Additive, Hilfsstoffe etc. zu den eigentlichen Farben verarbeitet (Flach-, Hoch- und Tiefdruck). Optional kann das Pigment auch über Homogenisierung im Farbreibstuhl direkt in die Farbe eingearbeitet werden. Zur Herstellung der Rastertiefdruckfarben werden die Farbbestandteile sowie das Sicherheitspigment in Kugelmühlen homogenisiert.The printing inks with the anti-Stokes luminophores are produced in such a way that first of all from the anti-Stokes luminophores and the printing process adapted varnishes a paste is generated. This paste is then in so-called three-roller color grinders together with the other components the colors such as color pigments, additives, auxiliary substances etc. to the actual colors processed (flat, high and low pressure). Optionally, the pigment can also over Homogenization in the paint grinder can be incorporated directly into the paint. to Production of the gravure inks, the color components as well as the Safety pigment homogenized in ball mills.

    Bei der Papier-, Leim- oder Lackherstellung werden die Pigmente bei den entsprechenden Verfahrensschritten als zusätzliches Additiv eingearbeitet (Bsp.: Cellulosepulpe zzgl. Pigment für mit UC-Pigmenten dotierte Papiere).In the manufacture of paper, glue or lacquer, the pigments are used in the corresponding process steps incorporated as an additional additive (example: Cellulose pulp plus pigment for papers doped with UC pigments).

    Claims (17)

    Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation, dadurch gekennzeichnet, dass die Up-conversion Elemente in Form von kleinen anorganischen Partikeln vorliegen und derart auf Wert- und/oder Sicherheitsdokumenten oberflächennah appliziert sind, dass deren Hochgeschwindigkeitsverifikation mittels NIR-Licht-Anregung und Detektion der Emissionsbanden im sichtbaren und NIR-Wellenlängenbereich erfolgt.Value and / or security document for high-speed verification, characterized in that the up-conversion elements are in the form of small inorganic particles and are applied to value and / or security documents near the surface in such a way that their high-speed verification by means of NIR light excitation and detection the emission bands are in the visible and NIR wavelength range. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation, dadurch gekennzeichnet, dass der Up-conversion-Leuchtstoff ein Thulium-aktiviertes und Ytterbium-kodotiertes Gadoliniumoxysulfid der Zusammensetzung (Gd1-x-yYbxTmx)2 O2S oder (Gd1-x-y)2O2S:Ybx, Tmy ist.Value and / or security document for the high-speed verification, characterized in that the up-conversion phosphor is a thulium-activated and ytterbium-coded gadolinium oxysulfide of the composition (Gd 1-xy Yb x Tm x ) 2 O 2 S or (Gd 1-xy ) 2 O 2 S: Yb x , Tm y is. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Up-conversion Elemente in Form von kleinen anorganischen Partikeln kleiner 5 µm, insbesondere kleiner 3 µm und insbesondere kleiner 2 µm sind.Value and / or security document for the high-speed verification according to claim 1 or 2, characterized in that the up-conversion elements in the form of small inorganic particles are less than 5 µm, in particular less than 3 µm and in particular less than 2 µm. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass Offsetdruckverfahren, Rastertiefdruckverfahren, Stahlstichtiefdruckverfahren, digitale Druckverfahren und dergleichen Druckverfahren für die grafisch hochwertige Gestaltung verwendbar sind.Value and / or security document for the high-speed verification according to one of claims 1 to 3, characterized in that offset printing processes, gravure printing processes, steel gravure printing processes, digital printing processes and the like printing processes can be used for the graphically high-quality design. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass nur in eine der Druckfarben die Up-conversion Elemente in Form von kleinen anorganischen Partikeln eingearbeitet sind und dass der Füllgrad im Bereich von 1 bis 30-Gewichts-%, insbesondere von 1 bis 20-Gewichts-% und bevorzugt von 5 bis 10-Gewichts-% beträgt und derart nicht die grafische und insbesondere farbliche Gestaltung störend beeinflusst.Value and / or security document for the high-speed verification according to one of Claims 1 to 4, characterized in that the up-conversion elements in the form of small inorganic particles are incorporated into only one of the printing inks and that the degree of filling is in the range from 1 to 30 % By weight, in particular from 1 to 20% by weight and preferably from 5 to 10% by weight, and thus does not interfere with the graphic and in particular color design. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Yb- und die Tm- Konzentration für (Gd1-x-y)2O2S:Ybx, Tmy für hohe Auslesegeschwindigkeiten in folgenden Grenzen gewählt werden: 0,05 ≤ x < 0,80 und 0,0001 ≤ y ≤ 0,10, und vorteilhaft für Auslesegeschwindigkeiten zwischen 3 und 6 m/s mit: 0,20 ≤ x ≤ 0,60 und 0,0001 ≤ y ≤ 0,05, so dass ein geeignetes An- und Abklingverhalten der Anti-Stokes-Lumineszenz vorliegt.Value and / or security document for the high-speed verification according to one of claims 2 to 5, characterized in that the Yb and the Tm concentration for (Gd 1-xy ) 2 O 2 S: Yb x , Tm y for high readout speeds in following limits can be selected: 0.05 ≤ x <0.80 and 0.0001 ≤ y ≤ 0.10, and advantageous for reading speeds between 3 and 6 m / s with: 0.20 ≤ x ≤ 0.60 and 0.0001 ≤ y ≤ 0.05, so that there is a suitable response and decay behavior of the anti-Stokes luminescence. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass zur Beeinflussung der An- und Abklingcharakteristik die Ytterbium- und/oder Thuliumkonzentrationen so eingestellt sind, dass die Wechselwirkungen zwischen diesen lonen bereits zu einer anteiligen Löschung der Anti-Stokes-Lumineszenz (Konzentrationslöschung) führen.Value and / or security document for the high-speed verification according to one of claims 2 to 6, characterized in that the ytterbium and / or thulium concentrations are adjusted so that the interactions between these ions already result in a proportionate deletion in order to influence the response and decay characteristics of anti-Stokes luminescence (concentration quenching). Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass zu einer eingestellten An- und Abklingcharakteristik der Anti-Stokes-Lumineszenz mittels Yb- und Tm-Konzentration ein davon abhängiges Intensitätsverhältnis der Emissionsbanden detektierbar ist.Value and / or security document for the high-speed verification according to one of claims 2 to 7, characterized in that a dependent on the intensity ratio of the emission bands can be detected for a set on and decay characteristics of the anti-Stokes luminescence by means of Yb and Tm concentration. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zur Beeinflussung der An- und Abklingcharakteristik ein gezielter Einbau von Störstellen in das Kationen- oder Anionenteilgitter des Leuchtstoffes vorliegt.Value and / or security document for the high-speed verification according to one of claims 1 to 8, characterized in that there is a targeted installation of impurities in the cation or anion partial lattice of the phosphor in order to influence the response and decay characteristics. Wert- und/oder Sicherheitsdokument nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass das An- und Abklingverhalten des Leuchtstoffes sowohl auf die Pulsfrequenz des Lasers als auch auf die detektierbare Intensitäten der emittierten Strahlung optimiert ist.Value and / or security document according to one of claims 6 to 8, characterized in that the response and decay behavior of the phosphor is optimized both on the pulse frequency of the laser and on the detectable intensities of the emitted radiation. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass insbesondere damit Postwertzeichen, Coupons, allgemeine Wertzeichen, Laminate und dergleichen mehr herstellbar und bei hoher Geschwindigkeit verifizierbar sind.Value and / or security document for the high speed verification according to one of claims 1 to 10, characterized in that in particular postage stamps, coupons, general stamps, laminates and the like can be produced and verified at high speed. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Up-conversion Elemente in Form von anorganischen Partikeln in das Substrat des Wert- und/oder Sicherheitsdokuments integriert sind und/oder in den oberflächennahen Bereich eines derartigen Substrates durch Streichen, Coaten, Oberflächenbeschichten, etc. eingearbeitet sind und/oder in Form einer Kleberbeschichtung aufgebracht sind.Value and / or security document for the high-speed verification according to one of claims 1 to 11, characterized in that the up-conversion elements in the form of inorganic particles are integrated in the substrate of the value and / or security document and / or in the area near the surface of such a substrate are incorporated by painting, coating, surface coating, etc. and / or are applied in the form of an adhesive coating. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Up-conversion Elemente in Form von anorganischen Partikeln insbesondere bei Postwertzeichen in die Kleberbeschichtung eingebaut sind und mittels Laserstrahlanregung durch das Papiersubstrat angeregt werden und insbesondere durch das Papierssubstrat die Emission im NIR-Wellenlängenbereich als auch gegebenenfalls im sichtbaren Wellenlängenbereich verifiziert wird.Value and / or security document for the high-speed verification according to one of claims 1 to 12, characterized in that the up-conversion elements in the form of inorganic particles, in particular in the case of postage stamps, are built into the adhesive coating and are excited by means of laser beam excitation through the paper substrate and in particular by the paper substrate, the emission in the NIR wavelength range and, if appropriate, in the visible wavelength range is verified. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 2 bis 13, dadurch gekennzeichnet, dass anstelle des Gadoliniums zumindest anteilig auch Yttrium und/oder Lanthan als Grundgitter-(Wirtsgitter-, Matrix-) Material eingesetzt ist.Value and / or security document for the high-speed verification according to one of claims 2 to 13, characterized in that, instead of the gadolinium, at least some of the yttrium and / or lanthanum is used as the basic grid (host grid, matrix) material. Wert- und/oder Sicherheitsdokument für die Hochgeschwindigkeitsverifikation nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass die Up-conversion Elemente nur in einer der Druckfarben in Form von kleinen anorganischen Partikeln eingearbeitet sind.Value and / or security document for the high-speed verification according to one of claims 1 to 14, characterized in that the up-conversion elements are incorporated only in one of the printing inks in the form of small inorganic particles. Wert- und/oder Sicherheitsdokument nach Anspruch 15, dadurch gekennzeichnet, dass ein Füllgrad im Bereich von 1 bis 30-Gewichts-%, insbesondere von 1 bis 20-Gewichts-% und bevorzugt von 5 bis 10-Gewichts-% verwendet wird.Value and / or security document according to claim 15, characterized in that a degree of filling in the range from 1 to 30% by weight, in particular from 1 to 20% by weight and preferably from 5 to 10% by weight, is used. Wert- und/oder Sicherheitsdokument nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass die Bedeckung derart gewählt ist, dass die für die Hochgeschwindigkeitsverifikation notwendige Anregungsdichte erreicht wird.Value and / or security document according to one of claims 1 to 16, characterized in that the covering is selected such that the excitation density necessary for the high-speed verification is achieved.
    EP02005017A 2001-03-16 2002-03-06 Document of value and/or security document Expired - Lifetime EP1241021B1 (en)

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    Also Published As

    Publication number Publication date
    DE10113266B4 (en) 2011-08-11
    ATE531527T1 (en) 2011-11-15
    EP1241021B1 (en) 2011-11-02
    EP1241021A3 (en) 2004-03-10
    DE10113266A1 (en) 2002-09-19

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