EP1631719B1 - Wertdokument mit einem sicherheitselement und verfahren zur herstellung des wertdokuments - Google Patents

Wertdokument mit einem sicherheitselement und verfahren zur herstellung des wertdokuments Download PDF

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Publication number
EP1631719B1
EP1631719B1 EP04732301A EP04732301A EP1631719B1 EP 1631719 B1 EP1631719 B1 EP 1631719B1 EP 04732301 A EP04732301 A EP 04732301A EP 04732301 A EP04732301 A EP 04732301A EP 1631719 B1 EP1631719 B1 EP 1631719B1
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EP
European Patent Office
Prior art keywords
coating
pigment
value document
pigments
electroluminescent
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
EP04732301A
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German (de)
English (en)
French (fr)
Other versions
EP1631719A1 (de
Inventor
Arnim Franz-Burgholz
Oliver Muth
Manfred Paeschke
Kuen Jakob
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Priority to SI200431503T priority Critical patent/SI1631719T1/sl
Publication of EP1631719A1 publication Critical patent/EP1631719A1/de
Application granted granted Critical
Publication of EP1631719B1 publication Critical patent/EP1631719B1/de
Priority to CY20101100914T priority patent/CY1111414T1/el
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G07D7/0032—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements using holograms
    • 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 value document having at least one security element, which comprises in a marking region a marking layer applied to a carrier body, comprising electroluminescent pigments. It further relates to an electroluminescent pigment suitable for use in such a value document, to a method for producing such a value document and to a method for producing such electroluminescent pigments.
  • Luminescent compounds of general type are in DE 101 34 977 A1 disclosed.
  • security elements can be configured in particular as optically variable elements, such as holograms or interference layer elements, which convey different color impressions when viewing depending on the viewing angle, but are not transmitted to the copy during the copying process.
  • optically variable elements such as holograms or interference layer elements
  • 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 exposed to an alternating electric field contactlessly via a suitably designed test device.
  • the alternating electric field excites the electroluminescent pigments contained in the marking layer to emit electromagnetic radiation, 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.
  • the invention has for its object to provide a value document of the above type, which has a particularly high safety standard.
  • an electroluminescent pigment suitable for use in such a value document, a method for producing such a value document and a method for producing such pigments are to be specified.
  • the electroluminescent pigments each comprise a pigment core formed from electroluminescent material, which is surrounded by an optically active coating.
  • the invention is based on the consideration that the value document for a particularly high safety standard should be equipped with electroluminescent pigments.
  • the value document should be equipped with a particularly high safety standard with electroluminescent pigments, which are designed especially for the emission of a characteristic, selectively identifiable spectrum.
  • a selectively identifiable spectrum should in particular have a comparatively narrow bandwidth, so that a wavelength-sensitive evaluation of particularly reliable assignment of emitted signals to individual pigment groups or types is possible. Namely, authenticity detection can be made dependent in particular on the presence of specific pigment groups or types.
  • a coating of the electroluminescent pigment core is provided such that, depending on the wavelength, partial "filtering" of the spectrum actually emitted by the electroluminescent material takes place.
  • the coating is designed for this purpose as an optically active coating.
  • a wavelength-selective transmission takes place through the use of a non-linearly absorbing coating.
  • suitable energetic levels can be generated in the crystal lattice of the coating, for example by selective doping of the coating, eg with metal ions (Fe 3+ , Co 3+ , Ni 3+ ), which can be excited with sufficient light intensity and thus the nonlinearity cause.
  • the coating can be designed such that parts of the emission spectrum are defined suppressed.
  • interference effects are expediently achievable by a targeted use of interference effects, by means of which the emitted spectrum can be selectively suppressed or attenuated in individual wavelengths or wavelength ranges.
  • a use of such interference effects is realized by a coating of the electroluminescent pigment cores, which preferably has at least two layers which differ from each other in their refractive index.
  • the value document is suitable for application of the security element by means of a printing process, preferably by means of screen printing, intaglio printing, offset printing, letterpress printing or a transfer process to the carrier body.
  • the pigments expediently have an average pigment size of about 1 ⁇ m to 50 ⁇ m, preferably from about 3 ⁇ m to 8 ⁇ m, so that they are particularly suitable for use in a security printing process.
  • Particularly fine-grained pigments which are therefore particularly suitable for use in a printing process, are obtainable in that the electroluminescent material forming the respective pigment core advantageously has a preferably cubic crystal structure.
  • the electroluminescent material forming the respective pigment core expediently consists of a II-VI compound, namely according to the invention of (co) doped ZnS, ZnSe, SrS, CaS or CdS, the doping as activator being Cu and / or Au and / or Mn and as co-activator comprises halide ions or 3-valent cations.
  • Alternative or additional advantageous dopants may include Ag, Fe, Co, Ni and / or rare earths, in particular Tm, Tb, Dy, Gd, Yb, Sm, Eu.
  • the coating surrounding the pigment core in the manner of a microencapsulation has at least one layer of inorganic material.
  • the inorganic material comprises a metal of Fe and / or Co and / or Ni and / or Cr and / or Mo and / or W and / or V and / or Nb, preferably of oxides, nitrides, oxysulphides, Sulfides of metals or semi-metals, which may be (co-) doped with metals or semimetals, on.
  • SiO 2 , SiO 2 , TiO 2 , NiO, Ni 2 O 3 , CoO, Co 2 O 3 , Y 2 O 3 or ZrO 2 is provided in a further advantageous embodiment as an inorganic material.
  • the coating only partially covers the surface of the respective pigment core.
  • the coating is designed to profile the emission spectrum of the respective pigment core to a particular extent and to modify it for a particularly characteristic signature.
  • the coating is selected in a particularly advantageous embodiment with respect to the refractive indices of their layers and / or dimensioned in their coating thickness such that the spectral transmission of the coating at a given wavelength, preferably one Wavelength at which the natural emission spectrum of the electroluminescent material is particularly pronounced has a maximum.
  • the material parameters refractive index and / or layer thickness are deliberately predetermined such that the desired focusing of the emission spectrum of the pigments occurs due to the use of the interference effects in the coating.
  • the coating can act, for example, in the manner of a bandpass filter or in the manner of an upper or lower edge filter, and maxima can be shifted or additional maxima can be generated in the emission spectrum.
  • the stated object is achieved in that a pigment core formed from electroluminescent material is surrounded by a coating with nonlinear transmission and / or absorption behavior.
  • Particularly advantageous developments of the electroluminescent pigment and the coating correspond to the designs provided for the document of value.
  • Such an electroluminescent pigment can preferably also be used in a luminescent device as a light-emitting component of light-emitting diodes, displays or backlighting.
  • the electroluminescent pigment is expediently protected from environmental influences, in particular from water vapor migration.
  • a resin is applied and softened to produce the marking layer, wherein in the softened state of the resin Pigmentkeme be applied such that the Pigmentkeme at least partially sink into the resin, so that only a part of the surface of the Pigmentkeme from Resin out, whereupon the coating is applied by means of physical vapor deposition (PVD) and / or chemical vapor deposition (CVD).
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • an acrylate-based resin is advantageously used, wherein in alternative or additional advantageous development, the pigment particles are scattered on a sieve on the resin.
  • the use of the sieve makes it possible to special easy way a high homogeneity and equal distribution of the pigment cores over the surface.
  • the marking layer is applied to the carrier body by means of a printing process, preferably by screen printing, intaglio printing, offset printing, letterpress printing or a transfer printing process.
  • a printing process preferably by screen printing, intaglio printing, offset printing, letterpress printing or a transfer printing process.
  • an ink is advantageously used in the application of the marking layer, in addition to the electroluminescent pigments, a solvent and / or a binder 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 pigment content of less than 30%, advantageously less than 25%.
  • the stated object is achieved in a second variant by using pigment veins by means of physical vapor deposition (PVD), chemical vapor deposition (CVD) and / or plasma methods and / or sol Gel process and / or Tarpolymer
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • sol Gel sol Gel process
  • / or Aufpolymer is a second variant by using pigment veins by means of physical vapor deposition (PVD), chemical vapor deposition (CVD) and / or plasma methods and / or sol Gel process and / or Aufpolymer
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • sol Gel process and / or Aufpolymer
  • the pigment cores are subjected according to the invention after their coating a grinding process such that a portion of the coating is broken away, so that subsequently at most a part the surface of the respective pigment core is covered with the coating.
  • the grinding process is expediently carried out in a ball mill, wherein a grinding aid is supplied before the beginning or during the grinding.
  • Milling aid is particularly suitable acetylcholine and / or oil and / or an aqueous suspension.
  • the grinding process can be advantageously integrated into the paint production.
  • the grinding process is advantageously carried out in a color production in a Dreiwalzenfarbstuhl, the coated pigments are part of the color.
  • color binders and color pigments are advantageously provided.
  • the spacing of the surfaces of the rolls of the three-roll color wheel is advantageously set to a value of at most the average diameter of the pigments.
  • the grinding process is carried out in an advantageous embodiment for a maximum of two hours, so that it is ensured that the coating is not completely removed from the pigment cores again.
  • the advantages achieved by the invention are, in particular, that a wavelength-selective transmission takes place through an optically active coating of the pigment nuclei.
  • This is achieved, for example, in the case of a single-layer coating by means of a non-linearly absorbing coating by targeted doping, for example with metal ions (Fe 3+ , Co 3+ , Ni 3+ ).
  • metal ions Fe 3+ , Co 3+ , Ni 3+
  • a targeted modification of the spectrum emitted by the electroluminescent pigment spheres can be made possible by a multilayer coating of the pigment nuclei, in which two, three or even more coating layers with completely or partially different refractive indices can be provided.
  • this spectrum can be made comparatively narrow-band, so that a particularly characteristic signature of the emission spectrum can be achieved.
  • electroluminescent Pigmentkem in combination with the specification of suitably selected coating parameters, ie in particular suitably selected refractive indices and layer thicknesses for the coating layers, from each other on the basis of their emission spectrum distinguishable pigment groups or varieties, so that in terms of their characteristic emission wavelength distinguishable security features are available.
  • a local reinforcement of the exciting electric field can be achieved in a particularly favorable manner if the coating has a certain electrical conductivity at least in one of the layers.
  • the respective coating layer then acts in the manner of a local "floating" electrode in the immediate vicinity of the electroluminescent material which effects compression and focusing of the contactless externally applied electric field in the immediate surrounding region of the electroluminescent material.
  • the excitation field of the electroluminescent material can locally be exceeded even with a comparatively low externally impressed field strength, so that a reliable excitation of the luminescence is made possible with comparatively small externally pronounced field strengths. Due to the particularly advantageous combination of these effects, it is thus possible to produce both a particularly concise, narrow-band spectrum and the use of comparatively small test field strengths in the evaluation.
  • the value document 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 carrier body 2, depending on the intended use of the document of value 1 made of paper Plastic, can be constructed of 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 serves in the manner of a security feature for detecting whether the value document 1 is genuine. For this purpose, verification or authentication methods are used that check certain chemical or physical properties of the security feature and thus detect whether the security feature meets the expected specifications.
  • the security element 6 is designed to a particular extent for automated readability of its security function.
  • the security element 6, as in the embodiment according to FIG. 2 is shown in section, in the marking area 4 a marking layer 8 applied to the carrier body 2.
  • the marking layer 8 is constructed to ensure automated evaluability on the basis of electroluminescent pigments 10.
  • the contactless irradiation of electromagnetic radiation in the marking layer 8 of a suitably selected test device as for example in the DE 197 08 543 is disclosed provided.
  • the electromagnetic radiation radiated into the marking layer 8 triggers electroluminescence phenomena in the pigments 10, wherein the electromagnetic response radiation generated thereby can be detected by a suitable sensor and evaluated automatically.
  • the marking layer 8 can be applied to the carrier body 2 by a printing process, in particular by screen printing, intaglio printing, offset printing or letter set printing.
  • the marking layer 8 comprises, on the one hand, the electroluminescent pigments 10 and, on the other hand, further constituents of the printing ink, such as, for example, color pigments and / or color binders 12.
  • the security element consists of a substrate 14 and a coating 16.
  • the substrate 14 may be a paper, a plastic or a composite material.
  • the electroluminescent pigments 10 comprehensive powder or a mixture of in FIG. 3a shown used type.
  • the security element 6 with the in FIG. 3b shown construction can be connected to the document of value 1, for example by gluing or laminating.
  • a powder comprising the electroluminescent pigments 10 can be mixed with plastic particles or plastic precursor particles and processed into a film by calendering, extruding or film casting.
  • the film may in this case already represent the value document 1 or the security element 6 or be connected to a carrier by means of one or more lamination or adhesive steps.
  • the security element 6 is designed to comply with particularly high security standards. For this purpose, it is ensured that the electroluminescent pigments 10 of the security element 6 have a particularly narrow-band emission spectrum in response to the radiated alternating electric field, so that an individualized recognition and assignment of a specified group or type of electroluminescent pigments 10 is made possible with appropriate tuning of the tester.
  • the electroluminescent pigments 10 each comprise an in FIG. 4 exemplified Pigmentkem 20, which is bounded by its surface 22.
  • the Pigmentkem 20 consists of an electroluminescent material, that is, of a material that emits electromagnetic radiation upon application of an alternating electric field.
  • Typical electroluminescent materials consist of a host lattice, a II-VI compound, for example zinc sulfide (ZnS), zinc selenide (ZnSe), strontium sulfide (SrS), calcium sulfide (CaS) or cadmium sulfide (CdS).
  • ZnS zinc sulfide
  • ZnSe zinc selenide
  • SrS strontium sulfide
  • CaS calcium sulfide
  • CdS cadmium sulfide
  • Such materials have an activator, this activator being provided as doping in the host lattice.
  • dopants may consist of copper (Cu), gold (Au) or manganese (Mn).
  • electroluminescent materials have coactivators, which are also dopants of the host lattice. These dopants can be used as halide ions (chlorine ions (Cl - ), bromine ions (Br - ) or iodine ions (I - )) or as 3-valent cations (aluminum ions (Al 3+ ), gallium ions (Ga 3+ ), indium ions (In 3+ ), europium ions (Eu 3+ ), prometium ions (Pm 3+ ), praseodymium ions (Pr 3+ )).
  • chlorine ions chlorine ions
  • Br - bromine ions
  • I - iodine ions
  • 3-valent cations aluminum ions (Al 3+ ), gallium ions (Ga 3+ ), indium ions (In 3+ ), europium ions (Eu 3+ ), prometium ions (Pm 3+
  • a widely used electroluminescent material consists of a zinc sulfide host lattice with a manganese and chlorine dopant (ZnS: Mn, Cl) and preferably has a cubic crystal lattice.
  • the doping can be silver (Ag), iron (Fe), cobalt (Co), nickel (Ni) and / or selected rare earths such as thulium (Tm), terbium (Tb), dysprosium (Dy), gadolinium (Gd ), Ytterbium (Yb), samarium (Sm), europium (Eu).
  • the electromagnetic radiation emitted by the electroluminescent pigment cores 20 when excited by an alternating electric field lies in a wavelength range between 200 nm and 3 ⁇ m.
  • the mean diameter (the so-called D-index 50 value) of such pigment core 20 in the exemplary embodiment is at most 30 ⁇ m, preferably less than 25 ⁇ m, particularly advantageously approximately 1 ⁇ m to 15 ⁇ m.
  • the respective pigment core 20 is surrounded by an at least single-layer optically active coating 24 in order to form the actual pigments 10.
  • a single-layer coating for example, a wavelength-selective transmission by means of a non-linearly absorbing coating is effected by targeted doping, for example with metal ions (Fe 3+ , Co 3+ , Ni 3+ ).
  • metal ions Fe 3+ , Co 3+ , Ni 3+
  • an optically active coating 24 of three layers 26, 28, 30 is shown.
  • the layers 26, 28, 30 forming this coating 24 are made of inorganic material in the exemplary embodiment. However, they may also be organic polymer-based materials such as PET and / or PMMA. Suitable inorganic materials are metals, in particular iron (Fe), cobalt (Co), nickel (Ni), chromium (Cr), molybdenum (Mo), tungsten (W), vanadium (V) or niobium (Nb). Metal oxide layers are preferably composed of silicon dioxide (SiO 2 ) silicon monoxide (SiO), titanium dioxide (TiO 2 ) yttrium oxide (Y 2 O 3 ) or zirconium dioxide (ZrO 2 ). The thickness of such a layer 26, 28, 30 should be at most 1 ⁇ m, but preferably 50 to 200 nm.
  • the optically active coating 24 is applied to the respective pigment core with the aim of suitably modifying the emission spectrum of the electroluminescent material of the pigment core 20 by targeted utilization of interferences and, in particular, making it comparatively narrow-band.
  • the layers 26, 28, 30 of the coating 24 of the exemplary embodiment are chosen such that the refractive index between adjacent layers 26, 28, 30 differs considerably. In this case, it is ensured that the electroluminescent material forming the pigment core 20 emits electromagnetic radiation when excited by an alternating electric field, which then exposes the coating 24 to interference effects.
  • the layers 26, 28, 30 are designed with regard to the layer thickness and their respective refractive index such that the electromagnetic radiation emitted by the electroluminescent material of the pigment core 20 passes through the layers only in certain predetermined regions of the wavelength spectrum.
  • the layers 26, 28, 30 are then called so-called ⁇ 2 - respectively.
  • ⁇ 4 Layers depending on whether a gain or an extinction is to be achieved in the relevant waveband, where m is an integer and ⁇ is the wavelength of the electromagnetic radiation which is to be amplified or extinguished.
  • the emission spectrum of the pigment nuclei 20 can be significantly modified, as exemplified by the spectra in FIGS FIGS. 6a to 6g is explained. While, as in FIG. 6a shown qualitatively in the form of an intensity (I) wavelength ( ⁇ ) spectrum for a non-coated Pigmentkem 20, the electroluminescent material has a comparatively broad-band emission spectrum with a maximum at a wavelength ⁇ 0 , the width of this spectrum can be through the coating 24th reduce significantly. An example of this is in FIG. 6b represented by a further intensity (I) wavelength ( ⁇ ) spectrum.
  • This characteristic spectrum for electroluminescent pigments 10 formed of pigment coats 20 provided with a coating 24 has a significantly lower bandwidth ⁇ in comparison to FIG FIG. 6a shown spectrum.
  • the coating 24 is selected such that both for wavelengths below the wavelength ⁇ 0 (or ⁇ 0 and ⁇ 1 and for wavelengths above the wavelength ⁇ 0 (or ⁇ 0 and ⁇ 1 ) filtering or attenuation of emitted radiation is made, so that in this case the coating 24 acts in the manner of a bandpass filter and a maximum is achieved ( FIG. 6b ) or several maxima, eg two maxima ( FIG. 6c ), be achieved.
  • the coating 24 may also be in the manner of an upper edge filter (FIG. FIG. 6d ), which in particular attenuates the emitted radiation having a wavelength of more than the wavelength ⁇ 0 , or in the manner of a lower edge filter (US Pat. FIG. 6e ) Which attenuates in particular radiation of a wavelength less than the wavelength ⁇ 0, be designed.
  • an additional maximum FIG. 6f
  • shift a maximum in the emission spectrum as in FIG. 6g indicated by the double arrow.
  • the coating 24 is applied to the respective pigment core 20 in such a way that it only partially covers its surface 22.
  • a method can be used, for which an intermediate in FIG. 8 is shown.
  • a substrate 14 is provided for the security element 6.
  • a resin 32 is applied, wherein the resin 32 is softened after application or before or during the application by heat input. Subsequently, pigment cores 20 of an electroluminescent material are scattered on the surface of the resin 32.
  • the softening of the resin 32 is thereby made in a thickness such that the pigment grains 20 do not completely sink into the resin 32, but that almost all the cores protrude with a part of their surface from the resin 32.
  • a coating is then carried out, for example by means of PVD or CVD method, so that the pigment cores 20 are only partially coated.
  • the pigments 10 in a first working step with a complete coating 24, as in FIG FIG. 5 shown to produce.
  • the coating of the pigment core 20 with the coating 24 can be effected in particular by means of physical vapor deposition (PVD), chemical vapor deposition (CVD) or a sol-gel process.
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • sol-gel process a sol-gel process.
  • the milling step is followed by a grinding process. By grinding, part of the coating is broken away from the initially completely coated pigment core 20.
  • the grinding process is carried out, for example, in a ball mill, wherein the powder is added before or during grinding, a grinding aid.
  • a grinding aid may be provided acetylcholine ([N (CH 3 ) 3 (C 2 H 5 O)] + COO - ), oil or an aqueous suspension.
  • the grinding process can also take place in the context of the production of a printing ink, so that the total manufacturing effort required is kept particularly low.
  • the electroluminescent pigments 10 are added to an ink, with which then the document of value 1 for producing the security element 6 and its marking layer 8 can be printed.
  • the color which is generally composed of binder and color pigments, in this case additionally contains the electroluminescent pigments 10 with the complete optically active coating 24.
  • the color is then placed in a three-color roller, which is generally customary in color production, and the distance the roll surface of the rollers of the three-roll color set such that the distance is slightly smaller or at most equal to the average diameter of the powder particles, then here the Pulververteilchen-Keme subjected to the complete coating a grinding process, so that subsequently a mixture of color and electroluminescent Pigments 10 is present, whose Pigmentkeme 20 are only partially coated on its surface 22.
  • the meal in the ball mill or the grinding process in the three-roll paint chair are preferably 30 minutes to 2 hours. After this period, a sufficient homogenization is achieved, with destruction of the pigment core 20 is reliably avoided by grinding.

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  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Computer Security & Cryptography (AREA)
  • Electroluminescent Light Sources (AREA)
  • Credit Cards Or The Like (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Document Processing Apparatus (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Luminescent Compositions (AREA)
  • Adornments (AREA)
  • Paper (AREA)
EP04732301A 2003-06-11 2004-05-12 Wertdokument mit einem sicherheitselement und verfahren zur herstellung des wertdokuments Expired - Lifetime EP1631719B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200431503T SI1631719T1 (sl) 2003-06-11 2004-05-12 Vrednostni dokument z varnostnim elementom in postopek za pripravo vrednostnega dokumenta
CY20101100914T CY1111414T1 (el) 2003-06-11 2010-10-14 Αξιογραφο με στοιχειο ασφαλειας και μεθοδος παραγωγης του αξιογραφου

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10326645A DE10326645A1 (de) 2003-06-11 2003-06-11 Wertdokument mit einem Sicherheitselement und Verfahren zur Herstellung des Wertdokuments
PCT/EP2004/005093 WO2004109014A1 (de) 2003-06-11 2004-05-12 Wertdokument mit einem sicherheitselement und verfahren zur herstellung des wertdokuments

Publications (2)

Publication Number Publication Date
EP1631719A1 EP1631719A1 (de) 2006-03-08
EP1631719B1 true EP1631719B1 (de) 2010-07-14

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EP04732301A Expired - Lifetime EP1631719B1 (de) 2003-06-11 2004-05-12 Wertdokument mit einem sicherheitselement und verfahren zur herstellung des wertdokuments

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EP (1) EP1631719B1 (ru)
JP (1) JP2006527104A (ru)
CN (1) CN1806078A (ru)
AT (1) ATE474089T1 (ru)
AU (1) AU2004245651A1 (ru)
CA (1) CA2528058A1 (ru)
CY (1) CY1111414T1 (ru)
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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2007072795A1 (ja) * 2005-12-19 2009-05-28 国際先端技術総合研究所株式会社 蛍光体粒子チップにより真贋判別可能なカード
FR2937058B1 (fr) * 2008-10-10 2012-01-06 Arjowiggins Procede de fabrication d'un document de securite.
US8530863B2 (en) 2008-12-08 2013-09-10 Spectra Systems Corporation Fluorescence notch coding and authentication
KR20130115023A (ko) * 2012-04-10 2013-10-21 삼성전자주식회사 금속탐지기 검출용 보안용지
DE102013207998A1 (de) * 2013-05-02 2014-11-06 Bundesdruckerei Gmbh Sicherheits- oder Wertprodukt mit elektrolumineszierendem Sicherheitselement und Verfahren zur Herstellung desselben
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
DE102019126729A1 (de) * 2019-10-02 2021-04-08 Ert Optik Dr. Thiel Gmbh Sicherheitsmerkmale zum Schutz vor Fälschung und Nachahmung von Produkten, Wertgegenständen, Wertdokumenten, Banknoten, Verpackungen und/oder Flüssigkeiten, wie z.B. Mineralölen

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3121491A1 (de) * 1980-05-30 1982-05-13 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Wertpapier mit echtheitsmerkmalen in form von lumineszierenden substanzen, sowie verfahren zur echtheitspruefung des wertpapiers und vorrichtung zum durchfuehren des pruefverfahrens
DE3121523A1 (de) * 1980-05-30 1982-04-15 GAO Gesellschaft für Automation und Organisation mbH, 8000 München "wertpapier mit echtheitsmerkmalen in form von lumineszierenden substanzen, verfahren und vorrichtung zur echtheitsbestimmung"
US5051277A (en) * 1990-01-22 1991-09-24 Gte Laboratories Incorporated Method of forming a protective bi-layer coating on phosphore particles
US5156885A (en) * 1990-04-25 1992-10-20 Minnesota Mining And Manufacturing Company Method for encapsulating electroluminescent phosphor particles
DE4126051C2 (de) * 1991-08-06 2002-06-13 Gao Ges Automation Org Sicherheitsdokument mit eingebettetem Sicherheitselement, Sicherheitselement und Verfahren zur deren Herstellung
JP3618110B2 (ja) * 1993-08-30 2005-02-09 株式会社デンソー エレクトロルミネッセンス素子の製法
DE4432035A1 (de) * 1994-09-09 1996-03-14 Philips Patentverwaltung Beschichtungsverfahren für Lumineszenzpulver, Luminenzenzpulver und beschichteter Gegenstand
PT852977E (pt) 1995-03-14 2003-10-31 Nittetsu Mining Co Ltd Po com uma pelicula em camadas multiplas sobre a sua superficie e o seu processo de preparacao
DE19758587C2 (de) * 1997-03-04 2003-03-27 Bundesdruckerei Gmbh Anordnung zur visuellen und maschinellen Echtheitsprüfung von Wert- und Sicherheitsdokumenten
US6064150A (en) * 1998-01-12 2000-05-16 Osram Sylvania Inc. Nitride coated particle and composition of matter comprised of such particles
DE19802588A1 (de) * 1998-01-23 1999-07-29 Riedel De Haen Ag Lumineszierende Fasern, Verfahren zu deren Herstellung und deren Verwendung
EA004319B1 (ru) 1998-11-27 2004-04-29 Ниттецу Майнинг Ко., Лтд. Флуоресцентный или светящийся состав
DE10134977A1 (de) 2001-07-24 2003-02-06 Giesecke & Devrient Gmbh Lumineszenzstoffe, ihre Herstellung und Verwendung
US6787988B2 (en) * 2001-11-13 2004-09-07 Durel Corporation Process for treating previously coated phosphor particles

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AU2004245651A1 (en) 2004-12-16
CY1111414T1 (el) 2015-08-05
CN1806078A (zh) 2006-07-19
SI1631719T1 (sl) 2010-10-29
UA89027C2 (ru) 2009-12-25
PT1631719E (pt) 2010-09-21
WO2004109014A1 (de) 2004-12-16
ES2347655T3 (es) 2010-11-03
ATE474089T1 (de) 2010-07-15
EP1631719A1 (de) 2006-03-08
CA2528058A1 (en) 2004-12-16
DE10326645A1 (de) 2005-01-13
DE502004011402D1 (de) 2010-08-26

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