EP1631461B1 - Document de valeur comportant un element de securite et procede de fabrication d'un document de valeur - Google Patents

Document de valeur comportant un element de securite et procede de fabrication d'un document de valeur Download PDF

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Publication number
EP1631461B1
EP1631461B1 EP04724592A EP04724592A EP1631461B1 EP 1631461 B1 EP1631461 B1 EP 1631461B1 EP 04724592 A EP04724592 A EP 04724592A EP 04724592 A EP04724592 A EP 04724592A EP 1631461 B1 EP1631461 B1 EP 1631461B1
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EP
European Patent Office
Prior art keywords
pigments
value document
field
dielectric constant
relative dielectric
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.)
Expired - Lifetime
Application number
EP04724592A
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German (de)
English (en)
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EP1631461A2 (fr
Inventor
Anett Bailleu
Arnim Franz-Burgholz
Hans Demanowski
Daniel Grammlich
Manfred Paeschke
Konstantin PÖTSCHKE
Martin Sprenger
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Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei GmbH
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Priority to SI200430154T priority Critical patent/SI1631461T1/sl
Priority to PL04724592T priority patent/PL1631461T3/pl
Publication of EP1631461A2 publication Critical patent/EP1631461A2/fr
Application granted granted Critical
Publication of EP1631461B1 publication Critical patent/EP1631461B1/fr
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Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light

Definitions

  • the invention relates to a document of value having at least one security element, which comprises in a marking area a marking layer applied to a carrier body, comprising electroluminescent pigments. It further relates to a method for producing such a value document.
  • the security elements can be configured in particular as optically variable elements, such as holograms or interference layer elements, which convey different color impressions when viewed depending on the viewing angle, but are not transmitted to the copy during the copying process.
  • the optically variable elements can also be applied in the form of pigments, as so-called OVI pigments, which enables, in particular, a printing technology processing.
  • OVI pigments which enables, in particular, a printing technology processing.
  • the value document as a security element in a marking area has a marking layer applied to a carrier body, for example the banknote paper, which is mixed with electroluminescent pigments.
  • a carrier body for example the banknote paper
  • electroluminescent pigments When checking or authenticating this security element, the marking layer containing the electroluminescent pigments is transferred without contact a correspondingly designed test device subjected to an alternating electric field.
  • the alternating electric field excites the electroluminescent pigments contained in the marking layer for luminescence, which can be registered directly or indirectly in a suitable receiver.
  • the valuable document thus equipped is therefore particularly suitable for an automated and thus particularly reliable evaluation with only limited technical effort.
  • Document EP-A-1003646 discloses a document document having a security element comprising in a marking area a marking layer comprising electroluminescent pigments applied to a support body.
  • the invention is therefore based on the object of specifying a value document of the abovementioned type with which the use of the electroluminescent pigments in the security element is made possible for a particularly high number of application and environmental conditions.
  • a particularly suitable for the production of such a document of value method should be specified.
  • this object is achieved according to the invention in that a plurality of electrically insulated field displacement elements having a dielectric constant of more than about 50, preferably more than about 200, are arranged in the marking region, which have a mean distance from one another of about 5 ⁇ m to 500 ⁇ m, in a particularly advantageous embodiment of about 10 ⁇ m to 200 ⁇ m.
  • the invention is based on the consideration that, for a particularly high range of possible uses for the electroluminescent pigments, ie in particular for a variety of possible combinations with different carrier or surrounding materials, the necessary for the excitation of the electroluminescence of the pigments, macroscopicallyteil josgende electric field strength should be kept low.
  • the field strength required for the excitation should be kept below the typical breakdown field strengths of the materials to be used in air or in the matrix.
  • a particularly favorable reinforcing effect of the electric field in the local vicinity of the electroluminescent pigments can be achieved by advantageously dimensioning the field displacement elements with regard to their average size and in particular by adapting them to the typically predominant grain sizes of the electroluminescent pigments.
  • the field displacement elements advantageously have a lateral size of up to about 500 ⁇ m.
  • the field displacement elements may be formed of dielectric material having a suitably highly selected dielectric constant or constants.
  • the field displacement elements are formed of electrically conductive material so that they form electrically isolated from their environment, so-called "floating" electrodes.
  • the field displacement elements are advantageously applied to the carrier body by printing technology, for example using a customary printing method, such as gravure printing or screen printing technology.
  • a customary printing method such as gravure printing or screen printing technology.
  • an areally uniform amplification effect can be achieved in that the field displacement elements in a further advantageous embodiment in the form of a laterally regular structure, preferably in the manner of a dot grid or grid, in the manner of a periodic line structure or in the manner of an open cross lattice, are applied to the support body.
  • their lateral size is advantageously about 10 ⁇ m to 500 ⁇ m, in a particularly advantageous embodiment about 50 ⁇ m to 200 ⁇ m.
  • any further security elements of the value document provided anyway can additionally be used as electrodes for the intended local field enhancement.
  • another security feature which thus serves as the actual security feature in the manner of a dual function and also as an electrode for the field enhancement in the excitation of the electroluminescent pigments
  • a metallic security thread and / or a hologram applied to the carrier body can be provided, wherein the use as the electrode for the electric field amplification, a corresponding positioning in the vicinity of the marking layer comprising the electroluminescent pigments should be provided. If the electroluminescent evaluation region lies directly below the hologram or the film element, then it should to avoid a shielding of the electroluminescent pigments, the respective conductive structure to be interrupted anyway.
  • the electrodes are advantageously integrated in the marking layer per se, so that a particularly favorable field enhancement is obtainable due to the immediate spatial proximity to the electroluminescent pigments.
  • mottled fibers can be incorporated in the marking layer as field displacement elements with a high dielectric constant.
  • a particularly simple way of producing such a document of value with particularly flexible variations in the adaptation of the emission properties of the pigments is achievable by the field displacement elements or at least parts thereof in the form of having a dielectric constant of more than about 50, preferably as electrical in a particularly advantageous embodiment conductive pigments are incorporated in the marking layer in addition to the electroluminescent pigments.
  • the marking layer with a suitable choice of the starting product, in particular with intimate mixing of the electroluminescent pigments with the pigments of high dielectric constant in the starting material, the application of both actually active in the security elements particles, namely the electroluminescent pigments, as well as the field-enhancing particles, namely the pigments with high dielectric constant, possible in only a single operation and thus with a particularly low effort.
  • the marking layer is particularly suitable for the production by printing processes in that its essential components, in particular the electroluminescent pigments and / or the electrically conductive pigments, are particularly suitable for application in a printing process are.
  • the electrically conductive pigments advantageously have an average pigment size of less than 25 ⁇ m.
  • a particularly pronounced field enhancement effect can furthermore be achieved by the electrically conductive pigments having a pigment size of about 3 ⁇ m to 7 ⁇ m in a particularly advantageous embodiment.
  • the high-permeability pigments are suitably selected in terms of their content of the total particles provided.
  • a suitable parameter for this is the area coverage, with which the respective particles lie next to one another on the substrate, and which can be determined, for example, in a plan view of the marking layer.
  • the pigments of high dielectric constant are advantageously applied with a surface coverage of slightly less than 50%, preferably slightly less than 40% , In the case of electrically conductive pigments provided as electrodes, these preferably have an area coverage of slightly less than 30%.
  • the pigments of high dielectric constant have a spatially anisotropic shape, preferably approximately a needle shape or a platelet shape.
  • a particularly pronounced field compression should be ensured by a sufficient proportion of field-enhancing pigments, on the other hand, the formation of electrical short circuits within the marking layer should be avoided by an excessive proportion of such pigments.
  • a total of high electroluminescence should be ensured by the fact that a sufficiently high proportion of electroluminescent pigments is provided, on the other hand has been found that when too high a proportion of electroluminescent Pigments only a relatively small fraction of the same is actually excited to electroluminescence.
  • the ratio of the proportion of electroluminescent pigments to the proportion of high-dielectric-constant pigments in the marking layer is about 6: 1 to 1: 6, preferably about 2: 1 to 1: 2.
  • Particularly suitable reinforcing materials are advantageously pigments of high dielectric constant, metallic pigments, preferably Fe, Cu, Al or Ag pigments or pigments of conductive polymers, preferably of polyaniline.
  • metallic pigments preferably Fe, Cu, Al or Ag pigments or pigments of conductive polymers, preferably of polyaniline.
  • silver (Ag) pigments is particularly advantageous, since the addition of silver particles leads to a blackening when copying the respective optical structure, so that such particles can still serve as an additional security feature.
  • pigments of highly doped semiconductor materials, carbon fibers or barium titanate may also be mixed. Barium titanate having a dielectric constant of preferably about 1000 is particularly suitable for forming the field displacement elements.
  • pigments of high dielectric constant and pigments of at least partially metallically coated bodies are provided.
  • the main body which in turn can be made of plastic, such as PVC or PC, or on the basis of actually electroluminescent pigments, can be completely enveloped as a starting product by so-called micro-encapsulation or Coaten with metallic compounds, as an alternative to applying the metallic Compounds can also be provided electrochemical reduction methods, the growth of layers or sputtering.
  • the base bodies, in particular the electroluminescent pigments are provided in particular with a layer of a layer thickness in the nm or ⁇ m range.
  • the above-mentioned object is achieved by applying the marking layer to the carrier body by means of a printing method, preferably by screen printing, gravure printing, offset printing, high-pressure printing or letter set printing.
  • a printing method preferably by screen printing, gravure printing, offset printing, high-pressure printing or letter set printing.
  • a particularly favorable adaptability of the electrode structures to the requirements of the field compression can be achieved by the field displacement elements are advantageously printed before or after the application of the marking layer on the carrier body, in particular the lateral structure of the field displacement elements can be adapted to material-specific requirements.
  • regular lateral structures such as, for example, point gratings or screens, periodic line structures or open cross gratings, can be produced.
  • the application of the material provided for forming the field displacement elements can be effected, for example, by printing suitably selected conductive printing inks.
  • a particularly simple and therefore particularly preferred production process can be achieved by applying the electroluminescent pigments of the marking layer to the carrier body in one working step together with the field displacement elements provided for field enhancement.
  • a printing ink is used in which, in addition to the electroluminescent pigments and an optionally required solvent and / or binder for forming the field displacement elements pigments having a dielectric constant of more than about 50, preferably electrically conductive pigments are included ,
  • the ink is designed in terms of their composition and in terms of their components for a particularly favorable usability in a printing process.
  • the printing ink advantageously contains a Total pigment content, ie in terms of electroluminescent pigments and high dielectric constant pigments, less than 30%, advantageously less than 25%.
  • the pigments are advantageously designed such that they are particularly suitable for use in a printing process.
  • the electroluminescent pigments and / or the electrically conductive pigments advantageously have an average particle size of less than 25 ⁇ m.
  • the production of the printing ink can be carried out in particular by adding electroluminescent pigments and electrically conductive amplifying pigments to give solvents and / or binders, optionally with the addition of further colors, and subsequent mixing.
  • electroluminescent pigments and electrically conductive amplifying pigments to give solvents and / or binders, optionally with the addition of further colors, and subsequent mixing.
  • particular care is taken to ensure that in the desired end product, ie in the marking layer applied to the carrier body, particularly favorable proportions of the individual particle fraction, ie on the one hand the electroluminescent pigments and on the other hand the pigments provided for increasing the field, with respect to a particularly pronounced overall electroluminescence arise.
  • a printing ink which has a weight fraction of about 3% to 20%, preferably from about 5% to 10%, of electroluminescent pigments and / or a weight fraction of about 1% to 20%, preferably about From 3% to about 15% of high dielectric constant pigments.
  • the ratio of the proportion of electroluminescent pigments to the proportion of pigments of high dielectric constant in the printing ink is about 6: 1 to 1: 6, preferably about 2: 1 to 1: 2.
  • the advantages achieved by the invention are, in particular, that through the targeted combination of electroluminescent pigments with suitably positioned and dimensioned field displacement elements, in particular electrically isolated (“floating") electrodes, in the region of the marking layer targeted compression and focusing of a non-contact externally impressed electrical Field is reached in the immediate vicinity of the electroluminescent pigments.
  • This can also be done comparatively moderate or low externally given electric field strengths in the local vicinity of the electroluminescent pigments whose field strength required for excitation of the electroluminescence are reliably achieved, so that with relatively small external fields, the excitation of the luminescence is possible. This ensures a comparatively versatile usability of the electroluminescent pigments.
  • a particularly simple method of preparation is achievable in that the electroluminescent pigments on the one hand and the pigments provided as reinforcing particles on the other hand are each applied by printing on the carrier body, whereby only a single operation is required by the field displacement elements in the form of suitably selected pigments in the actual ink together provided with the electroluminescent pigments.
  • the value document 1 according to FIG. 1, which may be, for example, a banknote, an identification card, a chip card or any other security document or product secured against counterfeiting or copying, comprises as a basic element a support body 2, which may be constructed depending on the application of the document of value 1 made of paper, plastic, laminated plastic layers or other suitably chosen material.
  • a security element 6 is applied in a marking area 4.
  • the security element 6 and the marking area 4 covered by the latter can be dimensioned and designed according to any criteria tailored to the intended use and, in particular, can be configured for optical reproduction of a printed image, for example a numerical value.
  • the security element 6 is designed to a particular extent for automated readability of its security function.
  • the security element 6 comprises, as shown in section in the exemplary embodiments according to FIGS. 2, 7, a marking layer 8 applied to the carrier body 2 in the marking region 4.
  • the marking layer 8 is thereby to ensure automated evaluability on the basis of electroluminescent pigments 10 built up.
  • the non-contact irradiation of electrical radiation into the marking layer 8 is provided by a suitably selected testing device, as disclosed, for example, in DE 197 08 543.
  • the electrical field coupled into the marking layer 8 triggers electroluminescence phenomena via the locally generated alternating electric field in the pigments 10, wherein the electromagnetic response radiation generated in this way can be detected by a suitable sensor and evaluated automatically.
  • the security element 6 is designed to a particular extent to ensure the intended for authentication excitation of the electroluminescence of the pigments 10 reliably even when the electromagnetic radiation is coupled only with relatively low field strength.
  • the security element 6 is provided in the vicinity of at least some of the electroluminescent pigments 10 for compression of the irradiated electric field, in particular in its longitudinal direction, which is preferably aligned, as indicated by the arrow 12, substantially laterally relative to the carrier body 2.
  • the security element 6 with electrically insulated, that is, electrically connected neither with each other nor with an external conductor, suitably dimensioned field displacement elements 14 equipped.
  • the field displacement elements 14 have a high dielectric constant of more than 100, wherein electrically conductive materials are selected in the exemplary embodiment for the formation of electrodes.
  • the electrodes are thus present in the exemplary embodiment as so-called "floating" electrodes.
  • the field displacement elements 14 are in particular in their lateral extent, that is seen in the direction parallel to the surface of the carrier body 2, limited to a characteristic size up to about 0.1 mm.
  • further electrodes connected to external elements may be provided in the region of the marking layer 8.
  • the electrodes are produced from a suitably selected, electrically conductive material which has been applied to the carrier body 2 by a printing method, preferably by a screen printing method.
  • the provided for forming the electrodes starting material is provided in particular in the form of a suitably selected, conductive ink.
  • the marking layer 8 with the electroluminescent pigments 10 is applied during the production of the value document 1 in the exemplary embodiment according to FIG. 2, but alternatively the electrodes could also be printed on the marking layer 8.
  • the electrodes in the exemplary embodiment according to FIG. 2 are particularly adapted to the intended effect of field compression and amplification in the vicinity of the pigments 10.
  • the electrodes are applied in the form of a periodic lateral structure on the carrier body, so that even with statistical distribution of the pigments 10 on the carrier body 2 on average, a satisfactory focusing effect of the electric field is achieved.
  • the electrodes are applied in the form of a regular dot grid.
  • the electrodes are adapted to one another from the average size of the electroluminescent pigments 10 both with regard to their lateral dimensioning and with respect to their respective spacing.
  • a size of approximately 25 ⁇ m is preferably selected for the lateral extent of the electrodes, wherein the electrodes are arranged spaced from one another by an average of approximately 10 ⁇ m to 50 ⁇ m.
  • FIGS. 4 to 6 Alternatives for the lateral structure of the electrodes are shown schematically in FIGS. 4 to 6.
  • FIG. 4 is provided to apply the electrodes in the form of broken straight lines.
  • a line pattern according to FIG. 5 may be provided.
  • FIG. 6 an open cross grid is provided for the structure of the electrodes.
  • the application of both the electroluminescent pigments 10 and the field displacement elements 14 is provided in a single operation.
  • the field displacement elements 14 in this embodiment are integrated in the actual marking layer 8 in the form of pigments 16 having a dielectric constant of more than 100, in the exemplary embodiment electrically conductive pigments 16.
  • the measures provided for the formation of the electrodes electrically conductive pigments 16 are designed in shape and dimensions in particular to the desired local field enhancement of the radiated electric field.
  • the electrically conductive pigments 16 have a spatially anisotropic shape, which in particular could assume a needle shape. With regard to their particle size or pigment size, an average extent of about 3 ⁇ m to 7 ⁇ m is provided.
  • the mixing ratio between electroluminescent pigments and electrically conductive pigments 16 is also particularly oriented in the exemplary embodiment to the desired field enhancement to facilitate excitation of the electroluminescence. These are in the embodiment according to FIG. 7 contains approximately as many electrically conductive pigments 16 as electroluminescent pigments 10 in the marking layer 8. In the marking layer 8, the ratio of the areal coverage of the electroluminescent pigments 10 to the proportion of the electrically conductive pigments 16 is thus about 2: 1 to 1: 2.
  • further additives such as barium titanate (BaTiO 3 ), may be provided in the marking layer 8.
  • the electrically conductive pigments 16 could in principle be formed of any material of suitably high conductivity, such as conductive polymer such as polyaniline, PVC or PC based metallized plastics, highly doped semiconductor materials or carbon fibers.
  • the pigments 16 are in the form of metallic pigments, in particular aluminum or copper particles.
  • the marking layer 8 is applied to the carrier body 2 by means of a printing process, in particular by screen printing, intaglio printing, offset printing or letter set printing.
  • a printing ink is used in which, in addition to the electroluminescent pigments 10 and a solvent and / or binder, the electrically conductive pigments 16 are contained.
  • the electroluminescent pigments 10 and / or the electrically conductive pigments 16 are designed for an average particle size of less than 25 ⁇ m.
  • the ratio of the proportion of the electroluminescent pigments 10 to the proportion of the electrically conductive pigments 16 is about 2: 1 to 1: 2, corresponding to the desired proportionate distribution of the area coverage in the marking layer 8 shown in FIG
  • the ink used in the marking layer 8 also contains a weight fraction of about 5% to 10% of electroluminescent pigments 10 and a weight fraction of about 5% to 15% of electrically conductive pigments 16.
  • Further pigments of the printing ink for example particles in the binder of Color, preferably also have a particle size of less than about 3 microns.

Claims (29)

  1. Document de valeur (1) avec au moins un élément de sécurité (6), qui comprend, dans une zone de marquage (4), une couche de marquage (8) comportant des pigments électroluminescents (10) appliqués sur un corps de support (2), caractérisé en ce que, répartie dans la zone de marquage (4), est disposée une pluralité d'éléments de déplacement de champ (14) isolés électriquement de leur environnement respectif, qui ont une constante diélectrique de plus de 50, présentent une distance moyenne les uns des autres d'environ 5 µm à 500 µm, pour la formation d'interstices pour les pigments électroluminescents, et rehaussent localement dans les interstices une intensité de champ électrique gravé macroscopiquement.
  2. Document de valeur (1) selon la revendication 1, caractérisé en ce que la distance moyenne est d'environ de 10 µm à 200 µm.
  3. Document de valeur (1) selon la revendication 1 ou 2, caractérisé en ce que la constante diélectrique s'élève à plus de 200.
  4. Document de valeur (1) selon l'une des revendications 1 à 3, caractérisé en ce que les éléments de déplacement de champ (14) présentent une dimension latérale d'environ 10 µm à 500 µm.
  5. Document de valeur (1) selon l'une des revendications 1 à 3, dans lequel les éléments de déplacement de champ (14) présentent une dimension latérale d'environ 50 µm à 200 µm.
  6. Document de valeur (1) selon l'une des revendications 1 à 5, dans lequel les éléments de déplacement de champ (14) sont électriquement conducteurs.
  7. Document de valeur (1) selon la revendication 6, dans lequel les éléments de déplacement de champ (14) se présentent sous la forme d'électrodes flottantes.
  8. Document de valeur (1) selon l'une des revendications 1 à 7, dans lequel les éléments de déplacement de champ (14) sont appliqués par technique d'impression sur le corps de support (2).
  9. Document de valeur (1) selon la revendication 8, dans lequel les éléments de déplacement de champ (14) sont appliqués sous la forme d'une structure régulière latéralement, de préférence à la manière d'un réseau de points ou d'une trame, à la manière d'une structure périodique de traits, ou à la manière d'un croisillon ouvert, sur le corps de support (2).
  10. Document de valeur (1) selon l'une des revendications 1 à 9, dans lequel une autre caractéristique de sécurité, de préférence un fil métallique de sécurité et/ou un hologramme appliqué sur le corps de support (2), est prévue en tant qu'au moins l'un des éléments de déplacement de champ (14).
  11. Document de valeur (1) selon l'une des revendications 1 à 10, dans lequel au moins quelques-uns des éléments de déplacement de champ (14) sont intégrés dans la couche de marquage (8).
  12. Document de valeur (1) selon l'une des revendications 1 à 11, dans lequel au moins quelques-uns des éléments de déplacement de champ (14) sont intégrés dans le corps de support (2).
  13. Document de valeur (1) selon l'une des revendications 1 à 12, dans lequel des pigments (16) ayant une constante diélectrique de plus de 50, de préférence des pigments électriquement conducteurs, sont stockés dans la couche de marquage (8), pour la formation d'éléments de déplacement de champ (14) en plus des pigments électroluminescents (10).
  14. Document de valeur (1) selon la revendication 13, dans lequel les pigments (16) à constante diélectrique élevée sont appliqués avec une couverture de surface de moins de 50 %, de préférence de moins de 40 %.
  15. Document de valeur (1) selon la revendication 13 ou 14, dans lequel les pigments (16) se présentent sous la forme de pigments électriquement conducteurs et appliqués avec une couverture de surface de moins de 30 %.
  16. Document de valeur (1) selon l'une des revendications 13 à 15, dans lequel les pigments à constante diélectrique élevée (16) présentent une configuration spatialement anisotrope, de préférence approximativement une forme d'aiguille ou une forme de pastille.
  17. Document de valeur (1) selon l'une des revendications 13 à 16, dans lequel le rapport de la couverture de surface des pigments à constante diélectrique élevée (16) est d'environ de 6:1 à 1:6, de préférence d'environ 2:1 à 1:2.
  18. Document de valeur (1) selon l'une des revendications 13 à 17, dans lequel des pigments métalliques, de préférence des pigments de Fe, Cu, Al ou Ag, sont prévus en tant que pigments à constante diélectrique élevée (16).
  19. Document de valeur (1) selon l'une des revendications 13 à 18, dans lequel des pigments en polymère conducteur, de préférence en polyaniline, sont prévus en tant que pigments à constante diélectrique élevée (16).
  20. Document de valeur (1) selon l'une des revendications 13 à 19, dans lequel des pigments constitués de corps de base au moins partiellement revêtus de métal, sont prévus en tant que pigments à constante diélectrique élevée (16).
  21. Procédé de fabrication d'un document de valeur (1) selon l'une des revendications 1 à 20, dans lequel:
    - un corps de support est fourni, et
    - pour au moins un élément de sécurité (6), une couche de marquage (8), comportant des pigments électroluminescents (10), est appliquée au moyen d'un procédé d'impression sur le corps de support (2), dans une zone de marquage (4),
    caractérisé en ce que, répartie dans la zone de marquage (4), une pluralité d'éléments de déplacement de champ électriquement (14) isolés de leur environnement respectif, et ayant une constante diélectrique de plus de 50, sont disposés avec une distance moyenne l'un de l'autre d'environ 5 µm à 500 µm, pour la formation d'interstices pour les pigments électroluminescents, les éléments de déplacement de champ (14) rehaussant localement dans les interstices une intensité de champ électrique gravé macroscopiquement.
  22. Procédé selon la revendication 21, caractérisé en ce que le procédé d'impression est un procédé du genre sérigraphie, impression en taille douce, impression offset ou impression offset sec.
  23. Procédé selon la revendication 21 ou 22, dans lequel les éléments de déplacement de champ (14) sont imprimés sur le corps de support (2).
  24. Procédé selon l'une des revendications 21 à 23, dans lequel lors de l'application de la couche de marquage (8) on utilise une encre d'impression dans laquelle des pigments (16) ayant une constante diélectrique supérieure à 50 sont contenus en plus des pigments électroluminescents (10) et d'un solvant et/ou d'un liant, pour la formation des éléments de déplacement de champ (14).
  25. Procédé selon la revendication 24, dans lequel l'encre d'impression contient une teneur en pigments globalement inférieure à 30 %, de préférence inférieure à 25 %.
  26. Procédé selon les revendications 24 ou 25, dans lequel l'encre d'impression contient une teneur massique d'environ 1 % à 20 %, de préférence d'environ 5 % à 10 %, en pigments électroluminescents (10).
  27. Procédé selon l'une des revendications 24 à 26, dans lequel l'encre d'impression contient une teneur massique d'environ 1 % à 20 %, de préférence d'environ 3 % à 15 %, en pigments à constante diélectrique élevée (16).
  28. Procédé selon l'une des revendications 24 à 27, dans lequel le rapport de la teneur en pigments électroluminescents (10) sur la teneur en pigments à constante diélectrique élevée (16), dans l'encre d'impression, est d'environ 6:1 à 1:6, de préférence d'environ 2:1 à 1:2.
  29. Procédé selon l'une des revendications 24 à 28, dans lequel les pigments électroluminescents (10) et/ou les pigments à constante diélectrique élevée (16) présentent une taille moyenne de particule de moins de 50 µm.
EP04724592A 2003-06-11 2004-03-31 Document de valeur comportant un element de securite et procede de fabrication d'un document de valeur Expired - Lifetime EP1631461B1 (fr)

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SI200430154T SI1631461T1 (sl) 2003-06-11 2004-03-31 Vrednostni dokument z varnostnim elementom in postopek za izdelavo vrednostnega dokumenta
PL04724592T PL1631461T3 (pl) 2003-06-11 2004-03-31 Dokument wartościowy zawierający element zabezpieczający oraz sposób wytwarzania takiego dokumentu wartościowego

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DE10326644A DE10326644A1 (de) 2003-06-11 2003-06-11 Wertdokument mit einem Sicherheitselement und Verfahren zur Herstellung des Wertdokuments
PCT/EP2004/003411 WO2004108426A2 (fr) 2003-06-11 2004-03-31 Document de valeur comportant un element de securite et procede de fabrication d'un document de valeur

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DE102008034022A1 (de) 2008-07-16 2010-01-21 Merck Patent Gmbh Verfahren zur Herstellung eines Sicherheits- und/oder Wertprodukts mit Teilbereichen mit unterschiedlicher Lumineszenzemission
DE102008034021A1 (de) 2008-07-16 2010-01-21 Merck Patent Gmbh Verfahren zur Herstellung eines Sicherheits- und/oder Wertprodukts mit Zufallsmuster und korrelierter Identzeichenfolge
DE102012219905A1 (de) 2012-10-31 2014-04-30 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur Prüfung eines Sicherheitselements
DE102013205052A1 (de) 2013-03-21 2014-09-25 Bundesdruckerei Gmbh Vorrichtung und Verfahren zur kontaktlosen Anregung
WO2015091237A1 (fr) 2013-12-19 2015-06-25 Bundesdruckerei Gmbh Substance luminescente à sulfure de zinc présentant un comportement photo- et électroluminescent, procédé pour la production de ladite substance et document de sécurité, caractéristique de sécurité et procédé de détection de ladite caractéristique de sécurité
WO2018029253A1 (fr) 2016-08-11 2018-02-15 Bundesdruckerei Gmbh Procédé et dispositif d'identification d'au moins un élément de sécurité d'au moins une caractéristique de sécurité d'un produit de sécurité
DE102020111461B3 (de) 2020-04-27 2021-09-02 Bundesdruckerei Gmbh Sicherheitsmerkmal und Verfahren zu dessen Detektion sowie Sicherheits- oder Wertdokument
WO2023006142A1 (fr) 2021-07-27 2023-02-02 Bundesdruckerei Gmbh Élément de sécurité et son procédé de détection, et document de sécurité ou de valeur

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DE102007008151A1 (de) * 2007-02-19 2008-08-21 Joergen Brosow Sicherheitsmerkmal für die Echtheit eines Dokuments und Verfahren zur Prüfung seiner Echtheit
GB0800716D0 (en) * 2008-01-16 2008-02-20 Drinkwater Kenneth J Novel diffusers, novel methods of manufacture, and novel gas and light barrier structures and applications
JP2010169899A (ja) * 2009-01-23 2010-08-05 Ricoh Co Ltd クリーニング装置、プロセスカートリッジ、画像形成装置
NL2004018C2 (nl) 2009-12-24 2011-06-27 Vhp Ugchelen Bv Veiligheidskenmerk.
WO2012004295A1 (fr) * 2010-07-08 2012-01-12 Bayer Materialscience Ag Document de sécurité et/ou de valeur contenant un ensemble électroluminescent
DE102011119821A1 (de) * 2011-12-01 2013-06-06 Bundesdruckerei Gmbh Elektrooptisches Sicherheitselement
DE112012005313A5 (de) * 2011-12-19 2015-04-23 Inoviscoat Gmbh Leuchtbild
ES2648364T3 (es) 2011-12-19 2018-01-02 Inoviscoat Gmbh Elementos luminosos con una disposición electroluminiscente así como procedimiento para la producción de un elemento luminoso
DE102013207998A1 (de) * 2013-05-02 2014-11-06 Bundesdruckerei Gmbh Sicherheits- oder Wertprodukt mit elektrolumineszierendem Sicherheitselement und Verfahren zur Herstellung desselben
DE102017207367B3 (de) 2017-05-02 2018-08-23 Bundesdruckerei Gmbh Verfahren und Vorrichtung zum Verifizieren eines elektrolumineszierenden Sicherheitsmerkmals in einem Wert- oder Sicherheitsdokument
DE102017211104B3 (de) 2017-06-29 2018-10-18 Bundesdruckerei Gmbh Verfahren und Vorrichtung zum Verifizieren eines elektrolumineszierenden Sicherheitsmerkmals in einem Wert- oder Sicherheitsdokument unter Ausnutzung von zusätzlicher Lichtstrahlung
DE102020120193A1 (de) 2020-07-30 2022-02-03 Bundesdruckerei Gmbh Verfahren und vorrichtung zum bedrucken eines substrats mit einer elektrolumineszenten druckfarbe sowie ausweis-, wert- oder sicherheitsdokuments umfassend ein solches substrat

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Cited By (15)

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DE102008034022A1 (de) 2008-07-16 2010-01-21 Merck Patent Gmbh Verfahren zur Herstellung eines Sicherheits- und/oder Wertprodukts mit Teilbereichen mit unterschiedlicher Lumineszenzemission
DE102008034021A1 (de) 2008-07-16 2010-01-21 Merck Patent Gmbh Verfahren zur Herstellung eines Sicherheits- und/oder Wertprodukts mit Zufallsmuster und korrelierter Identzeichenfolge
DE102012219905A1 (de) 2012-10-31 2014-04-30 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur Prüfung eines Sicherheitselements
WO2014067922A1 (fr) * 2012-10-31 2014-05-08 Bundesdruckerei Gmbh Procédé et dispositif de vérification d'un élément de sécurité
DE102013205052A1 (de) 2013-03-21 2014-09-25 Bundesdruckerei Gmbh Vorrichtung und Verfahren zur kontaktlosen Anregung
DE102013114496A1 (de) 2013-12-19 2015-06-25 Bundesdruckerei Gmbh Zinksulfidischer Leuchtstoff mit Photo- und Elektrolumineszenzverhalten, Verfahren zu dessen Herstellung sowie Sicherheitsdokument, Sicherheitsmerkmal und Verfahren zu dessen Detektion
WO2015091237A1 (fr) 2013-12-19 2015-06-25 Bundesdruckerei Gmbh Substance luminescente à sulfure de zinc présentant un comportement photo- et électroluminescent, procédé pour la production de ladite substance et document de sécurité, caractéristique de sécurité et procédé de détection de ladite caractéristique de sécurité
US9670406B2 (en) 2013-12-19 2017-06-06 Leuchtstoffwerk Breitungen Gmbh Zinc sulphide phosphor having photo- and electroluminescent properties, process for producing same, and security document, security feature and method for detecting same
WO2018029253A1 (fr) 2016-08-11 2018-02-15 Bundesdruckerei Gmbh Procédé et dispositif d'identification d'au moins un élément de sécurité d'au moins une caractéristique de sécurité d'un produit de sécurité
DE102016215002A1 (de) 2016-08-11 2018-03-01 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur Identifikation zumindest eines Sicherheitselementsmindestens eines Sicherheitsmerkmals eines Sicherheitserzeugnisses
DE102020111461B3 (de) 2020-04-27 2021-09-02 Bundesdruckerei Gmbh Sicherheitsmerkmal und Verfahren zu dessen Detektion sowie Sicherheits- oder Wertdokument
WO2021219568A1 (fr) 2020-04-27 2021-11-04 Bundesdruckerei Gmbh Élément de sécurité et son procédé de détection, et document de sécurité ou de valeur
EP4350649A2 (fr) 2020-04-27 2024-04-10 Bundesdruckerei GmbH Caractéristique de sécurité et son procédé de détection ainsi que document de sécurité ou de valeur
WO2023006142A1 (fr) 2021-07-27 2023-02-02 Bundesdruckerei Gmbh Élément de sécurité et son procédé de détection, et document de sécurité ou de valeur
DE102021119436A1 (de) 2021-07-27 2023-02-02 Bundesdruckerei Gmbh Sicherheitsmerkmal und Verfahren zu dessen Detektion sowie Sicherheits- oder Wertdokument

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RU2329151C2 (ru) 2008-07-20
PT1631461E (pt) 2007-02-28
DE502004001817D1 (de) 2006-11-30
ATE342811T1 (de) 2006-11-15
RU2006100302A (ru) 2006-07-27
CY1105918T1 (el) 2011-04-06
CN100408349C (zh) 2008-08-06
JP2006527103A (ja) 2006-11-30
WO2004108426A2 (fr) 2004-12-16
US7427029B2 (en) 2008-09-23
AU2004245177B2 (en) 2009-05-28
PL1631461T3 (pl) 2007-03-30
CN1784314A (zh) 2006-06-07
JP4295786B2 (ja) 2009-07-15
ES2275216T3 (es) 2007-06-01
EP1631461A2 (fr) 2006-03-08
WO2004108426A3 (fr) 2005-03-03
CA2528111C (fr) 2011-03-29
US20070199999A1 (en) 2007-08-30
CA2528111A1 (fr) 2004-12-16
AU2004245177A1 (en) 2004-12-16
UA80621C2 (en) 2007-10-10
DE10326644A1 (de) 2005-01-13
DK1631461T3 (da) 2007-02-12

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