EP3738785B1 - Élément de sécurité ayant des caractéristiques lisibles par machine - Google Patents

Élément de sécurité ayant des caractéristiques lisibles par machine Download PDF

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Publication number
EP3738785B1
EP3738785B1 EP19174396.2A EP19174396A EP3738785B1 EP 3738785 B1 EP3738785 B1 EP 3738785B1 EP 19174396 A EP19174396 A EP 19174396A EP 3738785 B1 EP3738785 B1 EP 3738785B1
Authority
EP
European Patent Office
Prior art keywords
security element
layer
magnetic
areas
carrier substrate
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.)
Active
Application number
EP19174396.2A
Other languages
German (de)
English (en)
Other versions
EP3738785C0 (fr
EP3738785A1 (fr
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 EP19174396.2A priority Critical patent/EP3738785B1/fr
Priority to US17/610,800 priority patent/US11932044B2/en
Priority to PCT/EP2020/062621 priority patent/WO2020229271A1/fr
Publication of EP3738785A1 publication Critical patent/EP3738785A1/fr
Application granted granted Critical
Publication of EP3738785C0 publication Critical patent/EP3738785C0/fr
Publication of EP3738785B1 publication Critical patent/EP3738785B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B42D25/40—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 for securing data carriers, valuable documents and the like, which has machine-readable security features, in particular magnetic features.
  • a security document with a security element in the form of a thread or band made of transparent plastic material which has a metallic layer with recesses in the form of characters, patterns or the like, with a further magnetic layer being arranged above or below this metal layer in such a way that at least the legible recesses remain free.
  • EP 1 871 616 B1 a security element with spatially resolved magnetic coding is known.
  • the magnetic codes are applied in two partial layers on different sides of the carrier substrate simultaneously with transparent recesses in the form of patterns, characters, letters, geometric figures, lines, guilloches and the like, with the respective magnetic layers partially overlapping and with the magnetic codes being spatially resolved can be and in addition to the two codings in the carrier substrate level, a coding normal to the carrier substrate level is added.
  • Security elements which have at least two magnetic materials, the magnetic materials having different coercive field strengths.
  • the materials are applied and/or introduced onto and/or into the security element in such a way that their remanence is the same.
  • a security element in particular for banknotes, security cards and the like, which comprises a first substrate which is at least partially opaque when viewed in transmitted light, with magnetic areas being applied to the substrate.
  • the magnetic areas include at least two different magnetic areas that have different coercivity and whose residual magnetism can be the same or different.
  • the magnetic areas are arranged in such a way that they generate at least three different codes.
  • a security element that has a coating made of different materials, wherein a layer can be a coding magnetic layer that can be formed by materials of the same or different coercivity.
  • a security element for securing documents of value which comprises coding with magnetic coding elements, the first coding element having a magnetic area with a first coercive field strength and the second coding element having a magnetic area with a second coercive field strength and a gap area.
  • the security element described is designed as a transfer element which can be coated with a combination of several layers with different materials, the magnetic features having different coercivity and/or remanence and can be applied over the entire surface or partially next to each other, on top of each other or overlapping.
  • the object of the invention was to provide a security element with machine-readable, in particular magnetic, security features, which has increased security against forgery, is easy to produce and enables clear identification.
  • each magnetic area being made up of exactly one printing ink and the magnetic areas can either directly border one another or can be spaced apart from one another.
  • the magnetic coding is carried out by mixing the at least two magnetic materials with different coercive field strengths in the printing ink that forms the magnetic areas and applying them with the same or different thickness to the security element. It is not possible according to the invention if only a single printing ink with a defined mixing ratio is used. This has the advantage of simple and cost-effective production while still maintaining a high level of safety, since when using a single printing ink, no production fluctuations can have an influence compared to printing several printing colors on top of each other. In addition, the same printing ink can be used to feed multiple printing cylinders. The different signal strengths are created solely by the different thicknesses with which the printing ink is applied.
  • the two magnetic materials are preferably a material with a high coercivity and a material with a low coercivity, with a magnetic material of high coercivity in this context including materials with > 1500 Oe, and a material with a lower one Coercive field strength materials ⁇ 500 Oe understood.
  • the magnetic materials are preferably chosen so that they do not influence each other when magnetized. Since a 3 times stronger magnetic field is usually used for each magnetic material when magnetizing, the difference in the coercive field strength of the magnetic materials must be chosen accordingly.
  • the invention provides that at least two printing colors are used
  • magnetic areas adjacent to one another are constructed using different printing inks.
  • the magnetic areas, which are formed by the at least one printing ink are applied at a distance from one another, but it can also be advantageous to apply two or more, identical or different printing inks of different thicknesses directly adjacent to one another in the lateral direction, so that one Magnetic area group is created.
  • a plurality of magnetic area groups can be arranged on the carrier substrate at a distance from one another, preferably at the same distance from one another.
  • the printing inks of a magnetic area group have different thicknesses, the thicknesses preferably increasing or decreasing from one side of the magnetic area group to the opposite side.
  • the printing ink which contains a mixture of the at least two magnetic materials with different coercive field strengths, is applied at least partially to a carrier substrate.
  • the carrier substrates are, for example, transparent carrier films, preferably flexible plastic films, for example made of polyimide (PI), polypropylene (PP), monoaxially oriented polypropylene (MOPP), biaxially oriented polypropylene (BOPP), polyethylene (PE), polyphenylene sulfide (PPS), polyether ether ketone (PEEK ) Polyetherketone (PEK), polyethyleneimide (PEI), polysulfone (PSU), polyaryletherketone (PAEK), polyethylene naphthalate (PEN), liquid crystalline polymers (LCP), polyester, polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyamide (PA), polycarbonate (PC), cycloolefin copolymers (COC), polyoxymethylene (POM), acrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC) ethylene tetrafluoroethylene (ETFE), polyte
  • the carrier films preferably have a thickness of 5 - 700 ⁇ m, preferably 5 - 200 ⁇ m, particularly preferably 5 - 50 ⁇ m.
  • metal foils for example Al, Cu, Sn, Ni, Fe or stainless steel foils with a thickness of 5 - 200 ⁇ m, preferably 10 to 80 ⁇ m, particularly preferably 20 - 50 ⁇ m, can also serve as the carrier substrate.
  • the films can also be surface-treated, coated or laminated, for example with plastics or painted.
  • cellulose-free or cellulose-containing paper, thermoactivatable paper or composites with paper for example composites with plastics with a basis weight of 20 - 500 g/m 2 , preferably 40 - 200 g/m 2 , can also be used as carrier substrates.
  • 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 assembled 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 is also possible to design the security element as a transfer element, whereby the carrier substrate can be removed after application to the data carrier or the document of value.
  • the security features can also be generated directly on the data carrier or the valuable document by at least partially printing the color of at least two magnetic materials with different coercive field strengths at a predetermined location on the data carrier or valuable document.
  • a printing ink which contains at least two magnetic materials with different coercivity.
  • the mixing ratio of the magnetic materials with different coercive field strengths is set in a defined manner.
  • the mixing ratio between a magnetic material with high coercivity and a magnetic material with low coercivity can be between 20:1 to 1:20, preferably 10:1 to 1:10, particularly preferably 5:1 to 1:5.
  • the mixing ratio and thus the printing ink can be the same for all magnetic areas of the security element.
  • the ratio of the different magnetic materials remains exactly constant during printing, regardless of the thickness of the printing inks applied. If printing inks of different thicknesses are applied, magnetic areas with different remanence are created with the same ratio of magnetic materials.
  • two or more printing inks are used, with the mixing ratios of the magnetic materials in the printing inks being different.
  • magnetic areas in addition to the magnetic areas formed from a printing ink with a mixture of two or more magnetic materials with different coercive field strengths, magnetic areas can be provided on the security element which consist only of magnetic material with low or only of magnetic material with high coercivity. In this case, either areas of magnetic material of low coercivity or areas of magnetic material of high coercivity are provided on the security element, preferably next to the magnetic areas formed from a printing ink with a mixture of two or more magnetic materials with different coercivity.
  • the security element can have further layers with security features.
  • an opaque layer in the form of a reflective layer or a print layer for example a colored, black, or white print layer, which can be applied over the entire area or partially, can be provided on the carrier substrate below and/or above the magnetic layer areas.
  • 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 are applied by PVD or CVD processes, by sputtering, electron beam evaporation or the like .
  • a reflective layer is also understood to mean, for example, a layer that appears metallic, such as a lacquer or printing ink layer that contains metallic pigments or flakes, or pigments or flakes made of metal compounds, such as metal oxides. These layers are preferably applied using known printing processes, by doctoring or brushing.
  • the reflective layer can also be an HRI (High Refractive Index) layer, for example a print layer in the form of a lacquer layer or a paint with a high refractive index.
  • HRI High Refractive Index
  • a partially applied reflective layer or a printing layer can preferably have recesses in the form of letters, numbers, patterns, characters, symbols, lines and the like.
  • the recesses in the reflective layer are preferably arranged so that they lie in the areas free of the magnetic layer.
  • the magnetic layer areas are visually covered so that they cannot be seen even when viewed in transmitted light
  • the recesses in the metallic or metallic-appearing layer or the print 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 regions 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 the magnetic layer and the metallic layer from influencing each other impede.
  • the protective layer prevents, for example, signs of corrosion, particularly when the security element is exposed to moisture, particularly 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 layers that have a color change effect depending on the viewing angle.
  • diffractive structures such as surface reliefs, holograms, diffraction gratings and the like
  • layers that have a color change effect depending on the viewing angle.
  • 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.
  • printing layers with interference pigments or liquid crystalline pigments can also be used to produce a layer with a color change effect dependent on the viewing angle.
  • the security element can optionally have further colored, black, gray or white print layers.
  • All of these security features can be applied over the entire surface or partially on one or both sides of the carrier substrate. They can do this Security features are applied in register and/or register accuracy, for example to the magnetic areas.
  • register-accurate or register-accurate means a defined position of the features relative to one another.
  • the further security features can also be provided on a second carrier substrate and connected to the layer structure on which the magnetic areas lie by laminating or covering.
  • 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 chlorides and their copolymers or consist of a cross-linking lacquer.
  • the security element can be provided with an adhesive layer on one or both sides in order to enable attachment to or in a data carrier or valuable documents.
  • 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, the pigments being 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 that fluoresce or phosphorescent in the visible, UV or IR range, effect pigments such as liquid crystals, pearlescent, bronzes and/or multilayer color changing 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 security element can also be designed as a transfer element, whereby the carrier substrate can be removed after the security element has been applied to a data carrier or a document of value.
  • a release layer can be provided on the carrier substrate and under the layer structure present on the carrier substrate.
  • a security element 18 comprising a carrier substrate 1 made of a plastic film, for example made of PET, onto which an opaque layer in the form of a reflective layer 5 with recesses 7 is applied.
  • the recesses 7 can be designed in the form of letters, numbers, characters, patterns, symbols or lines.
  • Magnetic regions 2 spaced apart from one another are applied to the reflective layer 5.
  • the magnetic areas 2 are at the same distance from one another and in this way do not form any coding.
  • the coding is created by the composition of the magnetic areas 2 and their sequence.
  • areas 19 are applied with low-coercivity material 4 and magnetic areas 2 made of a printing ink with fixed proportions 3 of low-coercivity printing ink and fixed proportions 4 of high-coercivity printing ink.
  • the ratio in this exemplary embodiment is 1:1, but other mixing ratios within the range of 1:20 to 20:1 according to the invention are also possible.
  • a hidden magnetic coding is formed by the magnetic areas 2 made of the printing ink with fixed proportions of both low-coercivity and high-coercivity material.
  • the recesses 7 in the reflective layer 5 can also be designed in register with the areas free of the magnetic layer.
  • a black, white or colored print layer 6 can be provided instead of the reflective layer 5.
  • the reflective layer 5 or the printing layer 6 with recesses 7 can also be provided on the side of the carrier substrate opposite the magnetic areas 2.
  • FIG 1a is one for Figure 1 Analogous embodiment not according to the invention is shown, in which instead of the areas 19 with low-coercive material, areas 19 with high-coercive material are provided.
  • FIG. 2 an embodiment not according to the invention is shown, in which on a carrier substrate 1, which is made of a transparent, semi-transparent or opaque Plastic film can consist, a reflective layer 5 with recesses 7 is applied.
  • Magnetic areas 2 spaced apart from one another are applied to the reflective layer 5, each consisting of a printing ink with fixed proportions of low-coercive material 3 and high-coercive material 4.
  • the ratio of low-coercive material 3 to high-coercive material 4 is 4:1 in this exemplary embodiment.
  • the magnetic areas 2 are at the same distance from each other; the coding results from the defined proportions of both low-coercivity and high-coercivity material of the printing ink.
  • the magnetic areas 2 can be applied with different thicknesses, which additionally results in different remanences.
  • a black, white or colored print layer 6 can be provided instead of the reflective layer 5.
  • the reflective layer 5 or the printing layer 6 with recesses 7 can also be provided on the side of the carrier substrate opposite the magnetic areas 2.
  • FIG. 3 An embodiment according to the invention is shown, in which magnetic areas 2 with different mixing ratios of low-coercive material 3 and high-coercive material 4 are applied.
  • two printing inks with different mixing ratios are shown, but there can also be 3 or more printing inks with different mixing ratios of the magnetic materials be used.
  • the magnetic areas 2 are arranged so that they are each the same distance from each other.
  • a reflective layer 5 with recesses 7 is arranged above and below the magnetic areas 2, the recesses in the two reflective layers being arranged in register with one another. In the areas free of magnetic layers, the recesses 7 of the two reflective layers 5 can be seen in transmitted light.
  • the coding results, on the one hand, from the mixture of the specified proportions of both low-coercive and high-coercive material of the respective magnetic areas 2 as well as the different mixing ratios in the printing inks used.
  • a black, white or colored print layer 6 can be provided instead of the reflective layer 5.
  • the reflective layer 5 or the printing layer 6 with recesses 7 can also be provided on the side of the carrier substrate 1 opposite the magnetic areas 2.
  • FIG 4 An embodiment not according to the invention is shown in which printing inks (and thus magnetic areas 2) with the same mixing ratio of low-coercivity and high-coercivity materials 3, 4 with different thicknesses and the same width are directly adjacent to the partially applied, reflective layer 5 with recesses on a carrier substrate 1 7 is printed, which forms several magnetic area groups. Magnetic layer-free areas are provided between the three magnetic area groups shown.
  • the mixing ratio of low-coercive material 3 and high-coercive material 4 of each printing ink of each magnetic area group is in in this exemplary embodiment 1:1.
  • the different thicknesses of the printing inks result in different remanences within the magnetic area groups consisting of four adjacent printing inks of different thicknesses.
  • a security element only has a single magnetic area group.
  • Fig.4a shows an embodiment according to the invention, which is similar to that in Fig.4 shown with the difference that at least one magnetic area group is formed by printing inks that have a different mixing ratio of low-coercive and high-coercive materials 3, 4 than printing inks of other magnetic area groups.
  • one or more magnetic area groups are formed by printing inks which have different mixing ratios of low-coercive and high-coercive materials 3, 4.
  • the printing inks 2 of a magnetic area group can also be applied in such a way that they each have a decreasing or increasing thickness when viewed in one direction, whereby the increase or decrease in thickness can also occur progressively, as shown in Fig.4c is shown.
  • the thickness of the printing inks or magnetic areas can be designed in such a way that neither a gradient nor a step-shaped, continuous increase or decrease is formed in this regard, as in Fig.4d is shown.
  • a partially applied black, white or colored print layer 6 can be provided instead of the partially applied, reflective layer 5, a partially applied black, white or colored print layer 6 can be provided.
  • the reflective layer 5 or the printing layer 6 with recesses 7 can also be provided on the side of the carrier substrate opposite the magnetic area groups.
  • the magnetic area groups are each applied with printing inks with a fixed mixing ratio of low-coercive material 3 and high-coercive material 4 in different widths and different thicknesses, spaced apart from one another, on the partially applied, reflective layer 5 with recesses 7 present on a carrier substrate 1. Areas free of magnetic layers are provided between the three magnetic area groups shown.
  • the mixing ratio of low-coercive material 3 and high-coercive material 4 per printing ink is 2:1 for each magnetic area group in this exemplary embodiment.
  • the different thicknesses of the printing inks result in different remanences within the three magnetic area groups. According to those in the Fig.4 to 4d
  • the mixing ratios and thicknesses of each printing ink can also be adjusted in accordance with the exemplary embodiment Fig.5 be varied.
  • a black, white or colored print layer 6 can be provided instead of the reflective layer 5.
  • the reflective layer 5 or the printing layer 6 with recesses 7 can also be provided on the side of the carrier substrate 1 opposite the magnetic area groups.
  • FIG 6 An embodiment according to the invention is shown, in which a protective layer 8 is provided between the reflective layer 5 and the layer with magnetic areas/printing inks 2.
  • a protective layer possibly prevents the magnetic layer and reflective layer from influencing each other, for example through corrosion, when the security element 18 is exposed to moisture.
  • a black, white or colored print layer 6 can be provided instead of the reflective layer 5.
  • an embossed lacquer layer 9 is applied to a carrier substrate 1 made of a transparent plastic film, which is provided with a first partially applied, reflective layer 5 with recesses 7a.
  • a protective layer 8 On this layer 5 there is a protective layer 8 and on this protective layer magnetic areas 2 spaced apart from one another are applied, for which two different printing inks, each with a different mixing ratio of low-coercive material 3 and high-coercive material 4, are used.
  • a protective lacquer layer 8 is then again applied, and a second reflective layer 5 with recesses 7b is again applied to this protective lacquer layer 8.
  • the recesses 7b in this second reflective layer 5 are situated such that the recesses 7a in the first reflective layer are at least partially visible.
  • the security element is provided with an adhesive layer 13 on both sides in order to improve anchoring in a document of value.
  • a black, white or colored print layer 6 can be provided instead of the first and/or second reflective layer 5.
  • FIG 8 an embodiment not according to the invention is shown, in which on a transparent carrier substrate 1 there is a release layer 10 and on this release layer a thin-film element with a color-shifting effect consisting of an absorber layer 12, a dielectric spacer layer 11 applied thereon and a reflective layer 5 with recesses 7 is applied.
  • a transparent protective layer 8 is applied over this layer structure, onto which mutually spaced magnetic areas 2, which consist of a printing ink with fixed proportions of low-coercive material 3 and high-coercive material 4, are printed.
  • a second transparent protective layer 8 is then applied, on which a second reflective layer 5 with recesses 7 is located.
  • An adhesive layer 13 is applied to the entire structure, through which the security element can be fixed to an object.
  • the carrier substrate 1 is then removed.
  • the security element features a color-shifting effect and hidden magnetic coding.
  • a black, white or colored print layer 6 can be provided instead of the second reflective layer 5.
  • a primer layer or primer layer 15 is applied to a metallic carrier substrate 1.
  • Magnetic area groups are applied to this transparent primer or primer layer, which are made up of magnetic areas/printing inks 2 applied directly adjacent to one another with, not according to the invention, only a fixed mixing ratio of low-coercive and high-coercive materials 3, 4 with different thicknesses and the same width. Magnetic layer-free areas are provided between the magnetic area groups.
  • a thin-film structure with a color-shifting effect consisting of a partially applied, reflective layer 5, a full-surface dielectric spacer layer 11 and an absorber layer 12 is arranged above the magnetic area groups.
  • the partially applied, reflective one Layer 5 is applied in register, i.e. in a defined position relative to the adjacent magnetic areas 2.
  • the security element shows a partial color-shifting effect and hidden magnetic coding.
  • the dielectric spacer layer 11 and/or the absorber layer 12 can also be partially applied, preferably in register with the partially applied reflective layer 5.
  • a dark colored or black print layer 6 with recesses 7 is applied to a transparent carrier substrate 1.
  • Magnetic areas 2 are applied to this printing layer, for which two printing inks with different mixing ratios of low-coercive material and high-coercive material 3.4 are used.
  • a liquid crystal layer (LC layer) 14 is applied to this structure with a protective layer 8 in between. In those areas in which the magnetic areas 2 and/or the printing layer lie beneath the LC layer 14, a color shift effect can be seen due to the dark color of these areas.
  • Figure 10 is an analogous embodiment not according to the invention Fig. 8a shown, in which an additional lacquer layer with a diffractive structure 9 is applied to the color-shifting thin-film structure.
  • the diffractive structure is provided with a partially applied, reflective layer 5.
  • the security element shows a partial color-shifting effect and an additional diffractive effect, as well as a hidden magnetic coding.
  • FIG 11 an embodiment not according to the invention is shown, in which a protective layer 8 and then a reflective layer are applied to a metallic carrier substrate 1 Layer 5 with recesses 7 is applied.
  • Magnetic areas 2 with a fixed mixing ratio of low-coercive material 3 and high-coercive material 4 of different widths and different thicknesses are applied directly adjacent to one another in register with the reflective areas and thus form magnetic area groups that are spaced apart from one another. Between the three magnetic area groups shown, areas free of magnetic layers are provided, which are arranged in register with the recesses in the reflective layer 5.
  • the mixing ratio of low-coercive material 3 and high-coercive material 4 is 2:1 in this exemplary embodiment.
  • a colored print layer 6 is also applied to the magnetic area groups, also in register with the magnetic areas and the reflective layer 5.
  • a reflective layer 5 or alternatively a printing layer 6 is applied to a carrier substrate 1.
  • Magnetic areas 2 are applied to this layer 5/6, for which two different printing inks, each with a defined mixing ratio of low-coercive material 3 and high-coercive material 4, are used.
  • a protective layer 8 is applied over the magnetic areas, on which a black, reflective layer 5 or a partial black printing layer 6 is applied.
  • This layer 5 or 6 has recesses 7, which can be in the form of letters, characters, patterns, symbols, lines and/or the like.
  • An LC layer 14 provided on a second carrier substrate is laminated against this layer structure using a laminating adhesive and the second carrier substrate is then removed.
  • the layer structure can then be provided with an adhesive layer 13.
  • the color shift effect of the LC layer 14 can only be seen in those areas in which the LC Layer 14 is located above the black reflective layer 5 or the black printing layer 6.
  • the security element shows a partial color-shifting effect and hidden magnetic coding.
  • FIG 12a An embodiment according to the invention is also shown with a partial color shift effect, which, however, is generated by using a printing ink with interference pigments 16.
  • the structure essentially corresponds to that in Figure 12 Structure shown, but in this case the printing ink with interference pigments can be applied directly to the protective layer.
  • a thin polymeric protective film can also be used, which is connected to the structure using a laminating adhesive.
  • mixing ratios of low-coercive material 3 and high-coercive material 4 listed in the exemplary embodiments are merely examples and that other mixing ratios within the range according to the invention of 1:20 to 20:1 can also be used in each exemplary embodiment.
  • the individual magnetic areas 2 can always have different mixing ratios.
  • the security elements according to the invention are optionally suitable, after appropriate assembly in the form of threads, strips or patches, for at least partial embedding in or for application on data carriers, in particular valuable documents such as ID 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.

Claims (15)

  1. Elément de sécurité (18) avec des caractéristiques de sécurité (3, 4) magnétiques, lisibles par machine sous la forme d'au moins deux matériaux magnétiques d'intensités de champ coercitif différentes, qui sont mélangés dans au moins une encre d'impression (2) et sont appliqués sur un substrat de support (1), dans lequel la au moins une encre d'impression (2) est prévue dans au moins deux zones sur l'élément de sécurité (18) dans la même épaisseur et/ou une épaisseur différente et un rapport de mélange défini des au moins deux matériaux magnétiques dans au moins une encre d'impression (2) est présent, 2dans lequel au moins deux encres d'impression (2) avec différents rapports de mélange des matériaux magnétiques (3, 4) sont prévues dans au moins deux zones sur un substrat de support (1) dans la même épaisseur et/ou des épaisseurs différentes.
  2. Elément de sécurité (18) selon la revendication 1, caractérisé en ce que les au moins deux zones sont espacées l'une de l'autre.
  3. Elément de sécurité (18) selon la revendication 1 ou 2, caractérisé en ce que les au moins deux matériaux magnétiques (3, 4) sont un matériau magnétique avec une intensité de champ coercitif élevée et un matériau magnétique avec une intensité de champ coercitif faible.
  4. Elément de sécurité (18) selon une quelconque des revendications précédentes, caractérisé en ce qu'une pluralité de zones magnétiques sont formées sur le substrat de support (1), dans lequel chaque zone magnétique est constituée par exactement une encre d'impression (2) et présente des zones magnétiques adjacentes ayant des encres d'impression différentes.
  5. Elément de sécurité (18) selon une quelconque des revendications précédentes, caractérisé en ce que plusieurs encres d'impression identiques et/ou différentes (2) sont disposées directement les unes à côté des autres sur le substrat de support (1) et forment ainsi un groupe de zones magnétiques, dans lequel de préférence plusieurs groupes de zones magnétiques sont prévus qui sont espacés les uns des autres, de préférence équidistants.
  6. Elément de sécurité (18) selon la revendication 5, caractérisé en ce que les encres d'impression (2) d'un groupe de zones magnétiques présentent des épaisseurs différentes, dans lequel les épaisseurs augmentent ou diminuent de préférence d'un côté du groupe de zones magnétiques vers le côté opposé.
  7. Elément de sécurité (18) selon une quelconque des revendications précédentes, caractérisé en ce que le rapport de mélange du matériau magnétique à fort champ coercitif et du matériau magnétique à faible champ coercitif est de 20:1 à 1:20.
  8. Elément de sécurité (18) selon une des revendications précédentes, caractérisé en ce que l'élément de sécurité (18) présente sur un côté du substrat de support (1) sous et/ou sur les encres d'impression (2) une couche pleine ou couche partiellement opaque (5, 6).
  9. Elément de sécurité (18) selon la revendication 8, caractérisé en ce que la couche opaque présente des évidements sous forme de lettres, de chiffres, de caractères, de motifs, de symboles ou de lignes.
  10. Elément de sécurité (18) selon la revendication 8 ou 9, caractérisé en ce que la couche opaque est une couche réfléchissante (5) ou une couche imprimée colorée, noire ou blanche (6).
  11. Elément de sécurité (18) selon une des revendications précédentes, caractérisé en ce que l'élément de sécurité (18) présente en outre des éléments de sécurité.
  12. Elément de sécurité (18) selon une des revendications 8 à 11, caractérisé en ce que la couche opaque (5, 6) et/ou les autres éléments de sécurité sont appliqués en parfait repérage et/ou en registre avec l'encre d'impression (2).
  13. Elément de sécurité (18) selon une des revendications 8 à 12, caractérisé en ce que la couche opaque (5, 6) et/ou les autres éléments de sécurité sont prévus sur un deuxième substrat de support et sont reliés aux zones magnétiques par laminage ou doublure avec la structure de couches.
  14. Support de données ou document de valeur, comportant un élément de sécurité selon une des revendications 1 à 13.
  15. Support de données ou document de valeur selon la revendication 14, caractérisé en ce que l'élément de sécurité (18) est au moins partiellement incrusté sous forme de fil, bande ou pastille dans le support de données ou dans le document de valeur ou appliqué sur le support de données ou le document de valeur.
EP19174396.2A 2019-05-14 2019-05-14 Élément de sécurité ayant des caractéristiques lisibles par machine Active EP3738785B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19174396.2A EP3738785B1 (fr) 2019-05-14 2019-05-14 Élément de sécurité ayant des caractéristiques lisibles par machine
US17/610,800 US11932044B2 (en) 2019-05-14 2020-05-06 Security element with machine-readable features
PCT/EP2020/062621 WO2020229271A1 (fr) 2019-05-14 2020-05-06 Élément de sécurité comportant des caractéristiques lisibles par ordinateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19174396.2A EP3738785B1 (fr) 2019-05-14 2019-05-14 Élément de sécurité ayant des caractéristiques lisibles par machine

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EP3738785C0 EP3738785C0 (fr) 2024-03-13
EP3738785B1 true EP3738785B1 (fr) 2024-03-13

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EP (1) EP3738785B1 (fr)
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DE102020006240A1 (de) 2020-10-09 2022-04-14 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit lichtdurchlässigem Teilbereich
EP4159463A1 (fr) * 2021-10-04 2023-04-05 Hueck Folien Gesellschaft m.b.H. Cylindre d'emboutissage profond pour la micro-impression
WO2023233428A1 (fr) * 2022-06-02 2023-12-07 Shilpan Patel Nouvel élément de sécurité crypté pour billets de banque et son procédé de fabrication

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US11932044B2 (en) 2024-03-19
WO2020229271A1 (fr) 2020-11-19
US20220194117A1 (en) 2022-06-23
EP3738785C0 (fr) 2024-03-13
EP3738785A1 (fr) 2020-11-18

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