EP4000942A1 - Élément de sécurité pourvu de caractéristiques de sécurité lisibles par machine - Google Patents

Élément de sécurité pourvu de caractéristiques de sécurité lisibles par machine Download PDF

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Publication number
EP4000942A1
EP4000942A1 EP20207800.2A EP20207800A EP4000942A1 EP 4000942 A1 EP4000942 A1 EP 4000942A1 EP 20207800 A EP20207800 A EP 20207800A EP 4000942 A1 EP4000942 A1 EP 4000942A1
Authority
EP
European Patent Office
Prior art keywords
coercivity
security element
magnetic
areas
printing
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.)
Pending
Application number
EP20207800.2A
Other languages
German (de)
English (en)
Inventor
Gottfried Brandstetter
Marco Mayrhofer
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.)
Hueck Folien GmbH
Original Assignee
Hueck Folien 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 Hueck Folien GmbH filed Critical Hueck Folien GmbH
Priority to EP20207800.2A priority Critical patent/EP4000942A1/fr
Publication of EP4000942A1 publication Critical patent/EP4000942A1/fr
Pending 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable materials
    • 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
    • B42D25/328—Diffraction gratings; 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
    • B42D25/355—Security threads
    • 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
    • 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
    • B42D25/364—Liquid crystals
    • 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
    • B42D25/373—Metallic materials
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • 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
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint

Definitions

  • the invention relates to a security element with machine-readable security features in the form of magnetic materials with different coercive field strengths, which are present in several printing inks in several areas of the same and/or different remanence on a carrier substrate, and a data carrier or a document of value that has such a security element.
  • Security elements for protection, which allow their authenticity to be checked and at the same time serve as protection against unauthorized imitation.
  • security elements are often designed in the form of a security thread, which can be fully or partially embedded in a material of the data carrier, value document or article, for example the paper of a bank note.
  • security elements are also often provided with machine-readable codes whose information content can be recorded and evaluated.
  • Security threads or security strips containing magnetic material are known from the prior art.
  • the magnetic material can be applied continuously or only in certain areas, for example in the form of a code.
  • a sequence of magnetic and non-magnetic areas that is characteristic of the respective protected object is generally used for magnetic coding.
  • the EP 0310707 A2 describes a document with magnetically detectable security features, which areas with variable magnetic intensity which is obtained by changing the layer thickness or the concentration of the magnetic material.
  • the WO 2006/042667 A1 describes security elements that have at least two magnetic materials, the magnetic materials having different coercive field strengths.
  • the materials are arranged on and/or in the security element in such a way that their remanence is the same.
  • a security element is known, on the substrate of which at least two magnetic areas with different coercivity and the same or different remanence are applied.
  • the magnetic areas are arranged in such a way that they can generate at least three different codes.
  • the object of the invention is therefore to further increase the information content of the magnetic security element and/or to increase its security against forgery.
  • the production of the magnetic areas and their printing should be relatively simple and inexpensive.
  • a data carrier or document of value, in particular a banknote, is to be provided, the authenticity of which can be checked easily, but which is difficult to reproduce.
  • each area consisting of one printing ink is formed, which comprises at least one magnetic material that is selected from magnetic materials that have the coercivity K1, K2 or K3, at least three different areas are provided, which are formed by printing colors that are different from one another, wherein of the printing inks of the at least three areas, at least two printing inks each comprise only one of the magnetic materials that have the coercive field strength K1, K2 or K3, and wherein at least one printing ink is a mixture of at least two magnetic materials that have the coercive field strength K1, K2 or Have K3 includes.
  • the coercive field strength K1 is 3500 Oe ⁇ 30%, preferably ⁇ 20%, more preferably ⁇ 10%
  • the coercive field strength K2 is 250 Oe ⁇ 30%, preferably ⁇ 20%, more preferably ⁇ 10%
  • the coercive field strength K3 is 1000 Oe ⁇ 30 %, preferably ⁇ 20%, more preferably ⁇ 10%.
  • Materials >1500 Oe are typically high coercivity magnetic materials and low coercivity magnetic materials are generally understood to be materials having a coercivity ⁇ 500 Oe.
  • the magnetic materials with the coercive field strengths K1, K2 and K3 are selected in such a way that complete magnetization (saturation) can be achieved (usually a 3-fold stronger magnetic field is required for this, with the maximum possible field strength being around 15,000 Oe) , but there is no mutual influence.
  • At least one area A is provided with an ink that includes magnetic material that exclusively has a coercive field strength K1, at least one area B with an ink that includes magnetic material that exclusively has a coercive field strength K2, and at least one area C with an ink comprising a mixture of two magnetic materials with coercivity K1 and K2, where the coercivity K1 is 3500 ⁇ 300 Oe and the coercivity K2 is 275 ⁇ 25 Oe.
  • Flexible plastic foils also called carrier foils, are preferably used as carrier substrates.
  • This can be, for example, PI (polyimide), PP (polypropylene), MOPP (monoaxially stretched polypropylene), PE (polyethylene), PPS (polyphenylene sulfide), PEEK (polyetheretherketone), PEK (polyetherketone), PEI (polyetherimide), PSU ( Polysulfone), PAEK (polyaryletherketone), LCP (liquid crystal polymers), PEN (polyethylene naphthalate), PBT (polybutylene terephthalate), PET (polyethylene terephthalate), PA (polyamide), PC (polycarbonate), COC (cyclo-olefin copolymers) , POM (polyoxymethylene), ABS (acrylonitrile butadiene styrene), PVC (polyvinyl chloride), PTFE (polytetrafluoroethylene),
  • the thickness of the carrier substrate can be 5-700 ⁇ m, preferably 5-200 ⁇ m, particularly preferably 5-50 ⁇ m.
  • coextruded or chemically or physically pretreated plastic films for example acrylate-coated plastic films, can also be used as carrier substrate.
  • metal foils can serve as the carrier substrate, for example Al, Cu, Sn, Ni, Fe or stainless steel foils with a thickness of 5-200 ⁇ m, preferably 10-80 ⁇ m, particularly preferably 20-50 ⁇ m.
  • the foils can be surface-treated, coated or laminated, for example with plastics, or painted.
  • Paper or composites with paper for example composites of paper with plastics with a basis weight of 20-500 g/m 2 , preferably 40-200 g/m 2 , are also suitable as carrier substrates.
  • the carrier substrate can optionally be coated with an adhesion promoter.
  • the security features according to the invention can be applied to the carrier substrate in order to form a security element.
  • This security element can then be made up and at least partially embedded as a strip, thread or patch in a data carrier or a document of value or applied to it.
  • the security element can be designed as a transfer element, in which case the carrier substrate can be removed after application to the data carrier or the document of value.
  • a release layer can be provided on the carrier substrate and under the layer structure present on the carrier substrate.
  • the security features can also be generated directly on the data carrier or the document of value by the printing inks of the at least three different areas being printed at a predetermined location on the data carrier or document of value.
  • more than two of the areas formed by inks comprising only one of the magnetic materials having the coercivity K1, K2 or K3 are provided and/or the area formed by an ink comprising a mixture of at least two magnetic materials which have the coercivity K1, K2 or K3, more than one is provided.
  • each of the at least three different areas already allows coding on several levels, a further increase in the information content can be advantageous, for example for reasons of security, which is achieved by further areas.
  • Magnetic materials are preferably only present in the security element in the at least three different areas.
  • the mixing ratio of the magnetic materials in the areas formed by a printing ink comprising a mixture of at least two magnetic materials having the coercivity K1, K2 or K3 is identical and/or different, preferably in all of these areas identical.
  • the mixing ratio of the magnetic materials in the areas formed by a printing ink that comprises a mixture of at least two magnetic materials that have the coercivity K1, K2 or K3 is selected from 20:1 to 1:20 in one embodiment.
  • the printing inks that form the areas have the same and/or different layer thicknesses.
  • Magnetic materials or printing inks applied with different thicknesses cause different signal strengths, which means that the machine-readable coding can be expanded by an additional level.
  • An increase in the information content of the magnetic coding by achieving a different signal strength is achieved in the security element according to the invention in a further preferred embodiment of the invention in that at least one printing color is provided in the form of a grid.
  • At least one printing color is provided as a halftone screen, preferably different halftone screens are provided.
  • Halftoning is a well-known technology in the field of printing.
  • a grid essentially consists of a large number of small dots that are applied to the printing surface in a certain size and frequency.
  • the entire area of the screen is printed evenly, in the case of a halftone screen the area is only partially covered.
  • screens are produced with a screen roller known to those skilled in the art, in whose surface depressions, so-called cells, of a specific shape and depth are engraved, which are separated by webs and which absorb the printing ink.
  • a grid can, for example, also be designed such that the magnetic area C consists of a plurality of parallel magnetic tracks extending in the longitudinal direction with empty tracks in between, the magnetic tracks of different areas each having different dimensions in the transverse direction.
  • At least one ink differs from the other inks in its concentration of magnetic material(s).
  • the magnetic areas are equipped with different remanences or signal strengths and can thus contribute to an increase in the information content of the magnetic coding.
  • the same or a different remanence of the areas can be provided in all of these embodiments.
  • the thickness/raster/concentration of the magnetic material/materials or the printing ink must be selected accordingly.
  • the printing inks and thus the respective magnetic areas, can be arranged directly adjacent to one another and/or spaced apart.
  • areas that are adjacent to one another i.e. that border one another, are constructed using different printing inks.
  • the magnetic areas are applied at a distance from one another.
  • a Magnetic area group can again be spaced apart, preferably equally spaced apart, or arranged adjacent to one another on the carrier substrate.
  • the combination with a raster is also possible, whereby the print colors of a magnetic area group are characterized by a different raster, i.e. several identical print colors with different rasters or several different print colors with the same and/or different rasters.
  • the rastering also represents an advantageous possibility of providing a magnetic security code for data carriers or documents of value on its own, ie independently of other forms of formation of areas with individual magnetic materials, as described above.
  • one or more identical and/or different forms of screening, e.g Mixtures that can have the same or different mixing ratios of the at least two magnetic materials can be used to form magnetic areas for a security element with machine-readable security features in the form of magnetic materials.
  • the coercivity of the magnetic materials used for the grid(s) can be the same or different, depending on how extensive the magnetic coding is to be designed.
  • magnetic materials in this aspect are not limited to K1, K2 and K3 but can also have a value other than K1, K2 or K3.
  • the screening can be used, for example, in a variant in which at least two printing inks, each with different mixing ratios of the magnetic materials, are provided in at least two areas on a carrier substrate with the same and/or different thicknesses.
  • the screening can be used for at least one of the at least two printing colors or additionally in a further printing color.
  • the screening can advantageously be used in a variant in which several identical and/or different printing inks (different printing inks: printing inks with different mixing ratios of the at least two magnetic materials of different coercivity) of different thicknesses are arranged directly adjacent to one another on a carrier substrate and such a magnetic area group form.
  • the screening can be used for one or more printing colors of the magnetic area group and alternatively also in a printing color that is separate or independent of the magnetic area group.
  • the screening as such can also be combined with and/or provided in addition to one or more magnetic area groups formed by different printing inks of the same thickness.
  • the concentration of magnetic material/materials in the printing ink can be used to create different magnetic characteristics.
  • the different concentration can also be used in a variant in which at least two printing inks, each with different mixing ratios of the magnetic materials, are provided in at least two areas on a carrier substrate with the same and/or different thickness.
  • the concentration difference can in this case for at least one of the at least two printing colors or an additional printing color can be used.
  • the concentration difference in the printing ink can also be used as a feature of the magnetic code in the variant in which several identical and/or different printing inks of different thicknesses are arranged directly adjacent to one another on a carrier substrate and thus form a magnetic area group.
  • the different concentration of magnetic material(s) can be used for one or more magnetic domain group inks, and alternatively in a separate or independent ink from the magnetic domain group, and with one or more magnetic domain groups made up of different inks of the same thickness are formed, combined and/or provided in addition thereto.
  • the security element can have further layers with security features in another embodiment.
  • an opaque layer in the form of a reflective layer or a printed layer for example a colored, black, or white printed layer, can be provided on the carrier substrate below and/or above the magnetic layer areas, which can be applied over the entire area or partially.
  • a reflective layer is understood to mean, for example, a metallic layer made of Al, Cu, Ag, Au, Pd, Pt, Sn, In or their alloys and the like, which is produced by PVD or CVD processes, by sputtering, electron beam evaporation or the like can be upset.
  • a reflective layer is also understood to mean, for example, a layer that appears metallic, such as a paint or printing ink layer that contains metallic pigments or flakes, or pigments or flakes of metal compounds, such as metal oxides. These layers are preferably applied by known printing methods, by doctoring or brushing.
  • the reflective layer can also be an HRI (High Refractive Index) layer.
  • HRI layers have, for example, dielectric materials with a refractive index greater than or equal to 1.65, for example zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO 2 ), carbon (C), indium oxide (In 2 O 3 ), Indium tin oxide (ITO), tantalum pentoxide (Ta 2 O 5 ), cerium oxide (CeO 2 ), yttrium oxide (Y 2 O 3 ), europium oxide (Eu 2 O 3 ), iron oxides such as iron(II,III) oxide (Fe 3 O 4 ) and ferric oxide (Fe 2 O 3 ), hafnium nitride (HfN), hafnium carbide (HfC), hafnium oxide (HfO 2 ), lanthanum oxide (La 2 O 3 ), magnesium oxide (MgO), neodymium oxide ( Nd 2 O 3 ),
  • a partially applied reflective layer or a printed layer can preferably have gaps in the form of letters, numbers, patterns, characters, symbols, lines and the like.
  • the gaps in the reflective layer are preferably arranged in such a way that they lie in the regions free of the magnetic layer. On the one hand, this visually covers the magnetic layer areas so that they are not recognizable even when viewed in transmitted light, and on the other hand, the gaps in the metallic or metallic-appearing layer or the printed layer that can be seen in transmitted light create an additional security feature.
  • Such a reflective layer can alternatively be provided on the side of the carrier substrate opposite the magnetic areas or on both sides of the carrier substrate.
  • the reflective layer is provided on the same side of the carrier substrate below and/or above the magnetic areas, it may be expedient to provide a protective layer between this layer and the magnetic areas in order to prevent mutual influencing of the to prevent magnetic layer and the metallic layer.
  • the protective layer prevents, for example, corrosion phenomena, especially when the security element is exposed to moisture, especially when the layer is metallic or contains metallic pigments or flakes.
  • This protective layer can be designed as a thin film, but also as a protective lacquer layer.
  • optically variable security features can also be present on the carrier substrate or in the layer structure, for example diffractive structures such as surface reliefs, holograms, diffraction gratings and the like, or also layers that have a viewing angle-dependent color change effect.
  • Such security features with viewing angle-dependent color change effects are formed, for example, by thin-film elements that have a reflection layer, a dielectric spacer layer and an absorber layer, or by cholesteric liquid-crystal layers combined with a dark, preferably black, printed layer or metallization.
  • print layers with interference pigments or liquid-crystalline pigments can also be used to produce a layer with a color change effect that is dependent on the viewing angle.
  • the security element can optionally have further colored, black, gray or white printed layers.
  • All of these security features can be applied over the whole area or partially on one or both sides of the carrier substrate.
  • the security features can be applied with register and/or register accuracy, for example to the magnetic areas.
  • register-accurate or register-accurate is understood to mean a defined position of the features relative to one another.
  • the additional security features can also be provided on a second carrier substrate and connected to the layer structure on which the magnetic areas lie by lamination or lining. If necessary, the second carrier substrate can then be pulled off.
  • the security element can expediently be provided with a protective lacquer layer on one and/or both sides in order to protect the security features present on the security element against mechanical, physical and/or chemical influences.
  • the protective lacquer layer can, for example, be based on nitrocellulose, acrylates and their copolymers, polyamides and their copolymers, polyvinyl chloride and their copolymers or consist of a crosslinking lacquer.
  • the security element can be provided with an adhesive layer on one or both sides in order to enable it to be fixed on or in a data carrier or document of value.
  • This adhesive layer can be in the form of either a heat seal, cold seal, or self-adhesive coating.
  • the protective lacquer layer and/or the adhesive layer can also be pigmented, with all known pigments or dyes, for example TiO 2 , ZnS, kaolin, ATO, FTO, aluminum, chromium and silicon oxides or, for example, organic pigments such as phthalocyanine blue, i-indolide yellow, dioxazine violet and the like can be used.
  • organic pigments such as phthalocyanine blue, i-indolide yellow, dioxazine violet and the like
  • luminescent dyes or pigments which fluoresce or phosphorescent in the visible, UV or IR range, effect pigments such as liquid crystals, pearlescent, bronzes and/or multilayer color change pigments and heat-sensitive colors or pigments can be added. These can be used in all possible combinations.
  • luminescent pigments can also be used alone or in combination with other dyes and/or pigments.
  • the invention also relates to a data carrier or a document of value which has a security element according to an aspect as described above, wherein the security element is preferably at least partially embedded in the data carrier or in the document of value or applied to the data carrier or the document of value in the form of a thread, strip or patch.
  • the illustrated embodiment shows a security element comprising a carrier substrate 1 on which magnetic regions A, B and C which are equally spaced from one another are applied.
  • the two magnetic areas A are formed by a printing ink that includes magnetic material that exclusively has a coercivity K1 (shown hatched).
  • the magnetic area B in turn is formed by an ink comprising magnetic material that exclusively has a coercivity K2 (marked with "+" symbols).
  • a magnetic area C formed by an ink comprising a mixture of two magnetic materials with coercive forces K1 and K2, where K1 is for example 3500 ⁇ 300 Oe and K2 275 ⁇ 25 Oe is.
  • the magnetic materials with the coercive field strengths K1 and K2 of area C are shown separately from each other, but it should be understood that these two magnetic materials are mixed homogeneously and in the entire area C be present in a defined mixing ratio.
  • all magnetic areas have the same width and also have the same thickness.
  • In 2 is a to 1 shown analogous embodiment, in which instead of a second area A, a second area C is provided which has a different mixing ratio of the materials with the coercivity K1 and K2 than the first area C.
  • the magnetic areas A, B and C are not all equally spaced, but have different widths of magnet (layer)-free zones between each other.
  • the thicknesses of the inks forming the areas A, B and C also vary among themselves. As a result, different remanences are formed in the individual magnetic areas.
  • At least one area D can also be provided, which is formed by a printing ink that includes magnetic material with a coercivity K3.
  • the coercive forces K1, K2 and K3 are preferably 3500 ⁇ 300 Oe, 275 ⁇ 25 Oe and 1000 ⁇ 100 Oe.
  • the training of area D eg in relation on thickness and width or distance, the same options are available as for areas A and B.
  • areas A, B and C are provided adjacent to each other to form a group of magnetic areas, the areas within the group differing in width and the inks of the three areas also differing in thickness.
  • a single area A is shown next to the magnetic area group, but several individual areas A, B and/or C or just further magnetic area groups can also be provided.
  • one or more areas D can be provided as part of the magnetic area group(s) or as an additional area(s), with these areas being e.g. in terms of thickness and width or distance like areas A and B can be trained.
  • FIG. 4 shows an embodiment of a security element in which two different designs of magnetic area groups are shown, which can be used both independently and together as a security feature or with other magnetic area groups or magnetic areas.
  • the magnetic region group shown on the left only regions C are provided, each having the same mixing ratio and the same width but different layer thicknesses showing a stepwise, continuous increase or decrease in one direction.
  • the thicknesses of the printing inks of the individual areas C can be designed in such a way that the increase or decrease takes place in a running manner. All or individual areas C can also have different mixing ratios.
  • the group of magnetic areas on the right which also shows a gradual progression of the individual areas, includes not only printing inks from a specific magnetic area but also different areas A, B and C, which also have different widths.
  • the individual areas can be designed without an increasing or decreasing course and/or with different widths.
  • an area D is possible instead of or in addition to the areas A and/or B.
  • the security element has a carrier substrate 1 provided with a partial metal layer, on which a protective layer 2 and then a reflective layer 3 with gaps 4 are applied. If necessary, the protective layer 2 prevents the magnetic layer and the reflective layer from influencing one another, for example due to corrosion, when the security element is exposed to moisture.
  • a protective layer of paint a thin polymeric protective film can also be used, which is connected to the structure using a laminating adhesive.
  • the magnetic-area groups are arranged in register with the reflective areas, and areas without a magnetic layer are provided in register with the gaps 4 in the reflective layer 3 .
  • a printing ink 5 is also applied in register with the magnetic areas and the reflective layer 3 on each of the groups of magnetic areas.
  • the printing ink 5 can be a colored printing layer, but it is preferably a printing ink with metallic pigments, e.g. an ink with Al flakes, or a second vapor-deposited reflective layer.
  • the reflective layer 3 a black, white or colored printed layer can be provided.
  • a transparent, semi-transparent or opaque plastic film can also be provided.
  • the reflective layer 3 (or the printed layer) with gaps 4 can also be provided on the side of the carrier substrate 1 opposite the magnetic areas or groups of magnetic areas.
  • the gaps 4 can be designed in the form of letters, numbers, characters, patterns, symbols or lines and in this way form additional security features of the security element.
  • the security element can also be provided with an adhesive layer on one side or on both sides in order to improve anchoring in a document of value.
  • the security element can have additional security features, for example a thin-layer element with a color-shift effect or a lacquer layer with a diffractive structure.
  • additional security features for example a thin-layer element with a color-shift effect or a lacquer layer with a diffractive structure.
  • figure 5 shows an exemplary design of a security thread 6, in which the magnetic areas A, B, C of the magnetic coding not only have the same length and thickness, but also each take up the entire width of the security thread 6.
  • the two areas C differ in the grid and therefore, despite the same width, have a different amount of magnetic material in the transverse direction.
  • the magnetic areas C each consist of a plurality of parallel tracks 7 extending in the longitudinal direction of the printing ink of the area C comprising the magnetic material with the coercive field strengths K1 and K2 Areas C contain a smaller amount of empty webs than areas A and B.
  • At least one area D can also be provided here. It is also possible that the printing ink of one of the areas C is not a mixture of the magnetic materials with the coercive field strengths K1 and K2 but of the materials with the coercive field strengths K1 and K3 or K2 and K3 or even K1 + K2 + K3.
  • the security thread 6 is an alternative form of grid shown.
  • the ink of area C is shown here schematically as a halftone screen. In this case, in certain areas of the anilox roller or the printing cylinder, no cells are provided for receiving ink, as a result of which the printed surface is only partially covered with ink.
  • Such a full tone/halftone screen can also be combined with an amplitude-modulated screen known in the art, for example in order to be able to better represent color gradients.
  • an amplitude modulated screen the size of the screen dots varies and in this way produces different tonal values, with the larger the dot, the darker the tonal value.
  • frequency-modulated screening which can be used instead of amplitude-modulated screening or in addition to it in combination with full-tone/half-tone screening, very fine screen dots that are always the same size are printed, with their number and arrangement changing. The different tonal values are created here by the irregular distribution of the halftone dots.
  • the security elements according to the invention are optionally available after appropriate packaging in the form of threads, strips or patches at least partial embedding in or for application on data carriers, in particular documents of value such as identity cards, cards, banknotes or labels, seals and the like. Furthermore, the security elements according to the invention in the form of a strip or patch can also be used to close an opening in a data carrier.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
EP20207800.2A 2020-11-16 2020-11-16 Élément de sécurité pourvu de caractéristiques de sécurité lisibles par machine Pending EP4000942A1 (fr)

Priority Applications (1)

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EP20207800.2A EP4000942A1 (fr) 2020-11-16 2020-11-16 Élément de sécurité pourvu de caractéristiques de sécurité lisibles par machine

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023233428A1 (fr) * 2022-06-02 2023-12-07 Shilpan Patel Nouvel élément de sécurité crypté pour billets de banque et son procédé de fabrication
WO2023238160A1 (fr) * 2022-06-10 2023-12-14 Shilpan Patel Nouvelles caractéristiques de sécurité alpha numériques avec élément magnétique et leur procédé de fabrication
WO2026008537A1 (fr) * 2024-07-02 2026-01-08 Giesecke+Devrient Currency Technology Gmbh Composition d'encre magnétique, élément de sécurité et document de valeur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310707A2 (fr) 1987-10-08 1989-04-12 MANTEGAZZA ANTONIO ARTI GRAFICHE S.r.l. Document avec moyen antifraude détectable magnétiquement et ruban avec code d'identification détectable magnétiquement et code d'identification
WO2004049268A1 (fr) * 2002-11-28 2004-06-10 Hueck Folien Ges.M.B.H Elements de securite a attributs combines, reconnaissables de maniere mecanique
WO2006042667A1 (fr) 2004-10-14 2006-04-27 Giesecke & Devrient Gmbh Element de securite comportant des materiaux magnetiques presentant la meme remanence et une intensite de champ coercitive differente
WO2008061707A1 (fr) * 2006-11-22 2008-05-29 Giesecke & Devrient Gmbh Élément de sécurité pour documents de valeur
WO2009090676A1 (fr) 2008-01-15 2009-07-23 Fabriano Securities S.R.L. Elément de sécurité, en particulier pour billets de banque, cartes de sécurité et similaires, comportant des caractéristiques anti-contrefaçon
EP2578414A1 (fr) * 2011-10-04 2013-04-10 Hueck Folien Ges.m.b.H. Elément de sécurité ayant un effet de bascule colorée, son procédé de fabrication et son utilisation
US20130234426A1 (en) * 2010-08-27 2013-09-12 Matthias Müller Valve document having an at least partially embedded security element

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310707A2 (fr) 1987-10-08 1989-04-12 MANTEGAZZA ANTONIO ARTI GRAFICHE S.r.l. Document avec moyen antifraude détectable magnétiquement et ruban avec code d'identification détectable magnétiquement et code d'identification
DE3781894T2 (de) * 1987-10-08 1993-01-07 Mantegazza A Arti Grafici Dokument mit magnetisch detektierbaren sicherheitsmitteln und streifen mit magnetisch detektierbarem identifikationskode und identifikationskode.
WO2004049268A1 (fr) * 2002-11-28 2004-06-10 Hueck Folien Ges.M.B.H Elements de securite a attributs combines, reconnaissables de maniere mecanique
WO2006042667A1 (fr) 2004-10-14 2006-04-27 Giesecke & Devrient Gmbh Element de securite comportant des materiaux magnetiques presentant la meme remanence et une intensite de champ coercitive differente
WO2008061707A1 (fr) * 2006-11-22 2008-05-29 Giesecke & Devrient Gmbh Élément de sécurité pour documents de valeur
WO2009090676A1 (fr) 2008-01-15 2009-07-23 Fabriano Securities S.R.L. Elément de sécurité, en particulier pour billets de banque, cartes de sécurité et similaires, comportant des caractéristiques anti-contrefaçon
US20130234426A1 (en) * 2010-08-27 2013-09-12 Matthias Müller Valve document having an at least partially embedded security element
EP2578414A1 (fr) * 2011-10-04 2013-04-10 Hueck Folien Ges.m.b.H. Elément de sécurité ayant un effet de bascule colorée, son procédé de fabrication et son utilisation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023233428A1 (fr) * 2022-06-02 2023-12-07 Shilpan Patel Nouvel élément de sécurité crypté pour billets de banque et son procédé de fabrication
WO2023238160A1 (fr) * 2022-06-10 2023-12-14 Shilpan Patel Nouvelles caractéristiques de sécurité alpha numériques avec élément magnétique et leur procédé de fabrication
WO2026008537A1 (fr) * 2024-07-02 2026-01-08 Giesecke+Devrient Currency Technology Gmbh Composition d'encre magnétique, élément de sécurité et document de valeur

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