EP1516957A1 - Element de securité avec indications colorées - Google Patents

Element de securité avec indications colorées Download PDF

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Publication number
EP1516957A1
EP1516957A1 EP04021872A EP04021872A EP1516957A1 EP 1516957 A1 EP1516957 A1 EP 1516957A1 EP 04021872 A EP04021872 A EP 04021872A EP 04021872 A EP04021872 A EP 04021872A EP 1516957 A1 EP1516957 A1 EP 1516957A1
Authority
EP
European Patent Office
Prior art keywords
film material
security element
ink
security
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.)
Withdrawn
Application number
EP04021872A
Other languages
German (de)
English (en)
Inventor
Matthias Müller
Friedrich Dr. Kastner
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
Publication of EP1516957A1 publication Critical patent/EP1516957A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D21H21/42—Ribbons or strips
    • 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
    • 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

Definitions

  • the invention relates to a security element with colored codings, a Process for its preparation and its use.
  • a Safety device includes, known, the safety device on a flexible water-impermeable substrate with a metallic layer Has recesses.
  • a security element in the form of a thread or a band which has a translucent plastic film which has an opaque non-metallic coating with recesses, wherein at least in the areas congruent to the recesses colorant and / or luminescent substances are by which the recesses differ under suitable lighting conditions of the opaque coating in contrasting color.
  • the coloring or luminescent layer is applied by full-surface or partial printing. By overprinting, only the recesses overlapping areas can always be provided with the corresponding coloring or luminescent printing ink even with the lowest machine tolerance. Furthermore, the additional layer is necessary to achieve the contrast in color, which is a disadvantage with the ever stricter requirements on the precision and small thickness of the security features for value documents.
  • the object of the invention was to provide a security feature that at least one coating or layer with transparent recesses , wherein the recesses without subsequent or preceding Applying an additional colored print layer in transmitted light colored or appear colored-transparent.
  • the invention is therefore a security element that on a transparent or translucent carrier substrate at least one opaque Layer with related or non-contiguous Having recesses, wherein the recesses partially or fully colored appear, characterized in that the recesses after the Applying a solvent-soluble with dyes enriched ink and then removing this ink appear colored with a corresponding solvent in transmitted light, wherein the coloring by the resulting partial coloring of the time being colorless transparent carrier substrate is achieved.
  • Another object of the invention is a film material that on a transparent or translucent carrier substrate at least one opaque Layer with related or non-contiguous Having recesses, wherein the recesses partially or fully colored appear, characterized in that the recesses after the Applying a solvent-soluble with dyes enriched ink and then removing this ink appear colored with a corresponding solvent in transmitted light, wherein the coloring by the resulting partial coloring of the time being colorless transparent carrier substrate is achieved
  • the security element according to the invention thus has colored in transmitted light appearing coherent or unconnected Recesses on, with this effect not by an additional coloring layer but by exact partial coloring of the transparent or translucent carrier substrate after or before Application of the recesses having opaque layer is achieved.
  • carrier films are preferably flexible plastic films, for example made of PP, MOPP, PE, PI, PEN, PET, PA, PC, PVC or cellophane.
  • the carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 5 to 200 .mu.m, particularly preferably 5 to 50 .mu.m.
  • monoaxially stretched flexible plastic films can also be used.
  • the opaque layer may be a metallic or non-metallic opaque coating.
  • Metallic coatings are understood as meaning both metal coatings and coatings with metal compounds.
  • metallic coatings for example, layers of Al, Cu, Fe, Ag, Au, Cr, Ni, Zn and the like in question.
  • suitable metal compounds are oxides or sulfides of metals, in particular TiO 2 , Cr oxides, ZnS, ITO, ATO, FTO, ZnO, Al 2 O 3 or silicon oxides.
  • Suitable alloys are, for example, Cu-Al alloys, Cu-Zn alloys and the like.
  • the non-continuous metallic coatings can both through Printing metal pigments, such as Al platelets, one metal pigment-containing printing ink in any known printing process, as well by vapor deposition, sputtering, deposition, metallization and optionally subsequent possibly partial demetallization by means of etching techniques or using a previous soluble paint application and the like are applied.
  • Metallically appearing or reflecting coatings are coatings which reflect electromagnetic waves, preferably in the visible range, for example pigments, paints, glass or ceramic coatings, plastic pigments or metallic effect paints.
  • Metal effect paints are paints or lacquers, for example: based on doped or undoped semiconductor pigments, preferably in the form of platelets. Examples of such pigments are, for example, silicon, gallium or tellurium pigments which have a metallic luster. These pigments and the paint made using these pigments or the paint made therewith have a metallic luster and therefore visually appear as a metallic shiny or reflective coating.
  • Metallic effect paints are also understood here to mean paints or lacquers prepared on the basis of mica, coated with TiO 2 or Fe.
  • Suitable solvents include, for example, water or organic solvents, such as alcohols, ketones, aldehydes, aliphatics or aromatics and the like.
  • Suitable binders are various natural or synthetic binders, for example natural oils and resins, such as phenol-formaldehyde, urea, melamine, ketone, aldehyde, epoxy, polyterpene resins.
  • additional binders for example, polyesters, polyvinyl alcohols, polyvinyl acetates, - ethers, propionates and chlorides, poly (methyl) acrylates, polystyrenes, olefins, nitrocellulose, polyisocyanate, urethane systems and the like.
  • non-metallic opaque coatings are also, for example well-known opaque printing inks.
  • the metallic or non-metallic opaque coating then has the corresponding recesses in the form of patterns, signs, geometric Figures, lines, guilloches and the like on or in the form of patterns, Signs, geometric figures, lines, guilloches and the like on the Carrier substrate applied.
  • the metallic or non-metallic opaque coating with the corresponding recesses can be partially applied to the carrier substrate. Subsequently, a solvent-soluble and dye-enriched printing ink is applied to the carrier substrate provided with the partial opaque coating.
  • the ink does not bond with the opaque coating.
  • the solvent used is chosen to be the opaque coating does not trigger or dissolves.
  • a biodegradable ink having good rheological properties, high alcohol tolerance and excellent biodegradability, consisting of a base of 5 to 30% by weight of casein or 5 to 30% by weight of starch or 5 to 35% by weight of hydroxypropylcellulose or 5 to 30% by weight of polyvinyl alcohol and 5 to 80% by weight of a dye and 15 to 87% by weight of a solvent.
  • the ink may also be pigmented. But it can also be a pure color.
  • Suitable dyes are all dyes soluble in a solvent, for example azo dyes, phthalocyanine blue, i-indolidine yellow, dioxazine violet, triphenylmethane dyes, metal complex dyes, anionic or cationic dyes and sublimation dyes, textile dyes, luminescent dyes, natural or naturally identical dyes, paper dyes and the like.
  • a solvent depending on the carrier substrate used, for example Water, glycol, ethyl acetate, methyl ethyl ketone, ethanol and the like in Question. Particularly good results are, for example, in use PET as carrier substrate and glycol as solvent or swelling agent achieved.
  • the application of the ink may be in any known conventional manner carried out, for example, by spin coating, brushing, vapor deposition, by Printing, gravure, flexo, screen, offset, digital and the like) by spraying, sputtering or roller application techniques and the like.
  • the dye present in the printing ink migrates into the carrier substrate and although defined in the area in which the recesses of the opaque Layers are present or subsequently generated by decolorization and in each case defines the carrier substrate in a defined manner in this area.
  • the organic dyes store preferably in the direction of Main stretch, causing additional optical effects such as directional or polarized emission of the radiation.
  • the residence time of the ink or of the paint applied to the coated carrier substrate is a parameter that influences the residence time of the ink or of the paint applied to the coated carrier substrate.
  • the migration of the printing ink in the carrier substrate can on the one hand by Swelling of the carrier substrate by the existing in the ink Solvent, on the other hand by temperature or by a combination of both mechanisms take place.
  • the soluble ink is colored by means of a suitable Solvent, preferably water, optionally combined with mechanical action, removed.
  • a suitable Solvent preferably water, optionally combined with mechanical action, removed.
  • the opaque coating Defined recesses shows up depending on the used Dye-defined coloring of the carrier substrate while that of the opaque coating covered areas and the surface of the opaque Coating are free from any staining.
  • the different dyes contain defined mixed colors.
  • the thus coated and defined colored carrier substrate can be provided with further functional and / or decorative layers.
  • Application of this layer (s) may be by any method, such as gravure, flexo, screen, offset, digital (inkjet, dry and liquid), and the like.
  • color or lacquer layers can each have a variety of Compositions are used.
  • the composition of the individual Layers can vary in particular according to their task, so whether the individual layers serve only decoration purposes or one functional layer or whether the layer is both a Decoration as well as a functional layer should be.
  • the layers to be printed may be pigmented or unpigmented.
  • the pigments there may be used any known pigments, for example, inorganic-based pigments such as titanium dioxide, zinc sulfide, kaolin, ITO, ATO, FTO, aluminum, chromium and silicon oxides, or organic-based pigments such as phthalocyanine blue, i-indolidine yellow, dioxazine violet and the like It is also possible to use colored and / or encapsulated pigments in chemically, physically or reactively drying binder systems. Examples of suitable dyes are 1,1- or 1,2-chromium-cobalt complexes. Solvent-containing paint and / or paint systems, aqueous and solvent-free paint systems can be used. Suitable binders are various natural or synthetic binders.
  • the functional layers may have certain electrical, magnetic, chemical, physical and also optical properties exhibit.
  • conductivity For adjusting electrical properties, such as conductivity can For example, graphite, carbon black, conductive organic or inorganic Polymers, metal pigments (for example copper, aluminum, silver, gold, Iron, chromium and the like), metal alloys such as copper-zinc or copper-aluminum or amorphous or crystalline ceramic pigments such as ITO, FTO, ATO and the like may be added. Furthermore, can also be doped or undoped semiconductors such as silicon, germanium, Gallium arsenide, arsenic or ionic conductors such as amorphous or crystalline metal oxides or metal sulfides are used as an additive.
  • metal pigments for example copper, aluminum, silver, gold, Iron, chromium and the like
  • metal alloys such as copper-zinc or copper-aluminum or amorphous or crystalline ceramic pigments such as ITO, FTO, ATO and the like may be added.
  • doped or undoped semiconductors such as silicon, germanium, Gallium ar
  • the layer polar or partially polar Compounds such as surfactants or nonpolar compounds such as silicone additives or hygroscopic or non-hygroscopic salts used or be added.
  • nonpolar compounds such as silicone additives or hygroscopic or non-hygroscopic salts used or be added.
  • intrinsically conductive organic polymers such as polyaniline, polyacetylene, polyethylenedioxythiophene and / or Polystyrene sulfonate can be added.
  • electrically conductive layers for example, metallic or polymeric conductive layers are used.
  • suitable metallic conductive layers are paints or lacquers with metallic pigments (for example copper, aluminum, silver, gold, iron, chromium and the like), metal alloys such as copper-zinc or copper-aluminum.
  • metallic pigments for example copper, aluminum, silver, gold, iron, chromium and the like
  • metal alloys such as copper-zinc or copper-aluminum.
  • doped or non-doped semiconductors such as, for example, silicon, germanium or ionic conductors, such as amorphous or crystalline metal oxides or metal sulfides, as an additive.
  • polar or partially polar compounds such as surfactants or nonpolar compounds such as silicone additives or hygroscopic or non-hygroscopic salts can be used or added to adjust the electrical properties of the layer.
  • the application of the electrically conductive layer can, for example, by known demetallization method using an etchant or preferably a soluble wash color.
  • non-metallic conductive layer for example, one with carbon black, Graphite, amorphous or crystalline ceramic pigments such as ITO, ATO, FTO and the like pigmented dispersion or solution in Ethylenacrylatcopolymer, nitrocellulose, PVB, PA, acrylate or PVC or their Copolymers used.
  • electrically conductive polymeric layers for example Polyacetylene, poly-p-phenylene, polypyrrole, polythiophene, poly-p-phenylenevinylene, low molecular weight macrocyclic semiconductors, Organopolysilanes, polysulfur nitride and / or polyanilines and / or their Derivatives are used.
  • electrically conductive Polymers used polyaniline or polythiophene.
  • the polymers may be in the form of a dispersion or in the form of their monomers or prepolymers with subsequent application of an initiator and / or Catalyst or already in mixture with an initiator and / or catalyst be applied to a carrier substrate.
  • Baytron® P from the company HC Stark can be used as a commercial electrical conductive polymer suspension.
  • Suitable dispersants are, for example, inert solvents, preferably aqueous solvents or alcohols, such as i-propanol.
  • matrix polymers for example water-soluble polyesters, polyurethanes, polystyrene sulfonates, polyacrylates or ethylene acrylate copolymers, as matrix polymers to the polymer dispersions.
  • matrix polymers for example water-soluble polyesters, polyurethanes, polystyrene sulfonates, polyacrylates or ethylene acrylate copolymers
  • matrix polymers for example water-soluble polyesters, polyurethanes, polystyrene sulfonates, polyacrylates or ethylene acrylate copolymers
  • polyethylenedioxythiophene can be used with polystyrene sulfonate as the matrix polymer.
  • an initiator and / or catalyst both radical, and Redox or photo-initiator and / or catalysts and / or catalysts,
  • UV initiators are used as an initiator and / or catalyst.
  • Both monomer and initiator and / or catalyst and / or catalyst are preferably provided in a solvent or dispersion medium, for example, in an alcohol such as propanol or n-butanol.
  • Particularly preferred initiator / catalyst is Fe (III) toluenesulfonate used.
  • Fe (III) toluenesulfonate is a radical initiator or catalyst, which at the same time initiates a redox reaction during the polymerization.
  • the Fe (III) ion acts as an initiator and the toluenesulfonate forms the matrix in the conductive polymer
  • the electrically conductive polymer layers can also be pigmented, all known pigments are suitable. Do not want the transparency However, they are strongly opaque or coloring Pigments such as carbon black or graphite are not suitable.
  • the proportion of pigments in the solid state can be up to 40%.
  • the substrate may be previously to improve adhesion the conductive polymer used is treated with a coupling agent become.
  • the adhesion of the electrically conductive polymers on all carrier substrates quite more than satisfying.
  • the magnetic properties of the layer can, for example, with known magnetic pigment colors are generated. Especially suitable for Production of layers with optionally variable magnetic Properties are magnetic colors that are capable of a magnetic field to cause high flux density. The measurable gradient of the magnetic Flow is then through thickness modulation of the magnetic layers generated.
  • magnétique pigments with pigments based on Fe oxides, such as Fe 2 O 3 or Fe 3 O 4 , iron, nickel, cobalt and their alloys, barium or cobalt ferrite, hard and soft magnetic iron and steel grades in aqueous or solvent-containing dispersions.
  • suitable solvents are i-propanol, ethyl acetate, methyl ethyl ketone, methoxypropanol and mixtures thereof.
  • the pigments are in acrylate polymer dispersions with a Molecular weight of 150,000 to 300,000, in acrylate-urethane dispersions, Acrylate-styrene or PVC-containing dispersions or in solvent-containing introduced such dispersions.
  • Magnetic paints with pigments based on Cr / Ni steel are particularly suitable. These magnetic colors, in contrast to the conventional magnetic colors, which appear black, brown or gray, have a silvery appearance and at the same time have the required magnetic properties described above. This makes it possible to produce the desired or required for many applications shiny metallic appearance in one operation already by printing these magnetic colors. Overprinting or coating with metallic or metal layers to produce the desired appearance is therefore not necessary, but can be done easily, for example, to introduce additional identification features.
  • optically active structures on the carrier substrate present in any known manner can.
  • these diffractive structures become by coating the carrier substrate, which may already have one or more has several of the described layers, with a radiation-curable Lacquer, which up to the gel point by excitation with radiation one defined Wavelength is precured, and simultaneous impression of the Surface structure, whereupon the further hardening (main hardening) of the Radiation-curable varnishes by stimulating radiation to a Pre-hardening step different wavelength performed, where appropriate a post-curing takes place.
  • the optical properties of the respective layer are represented by visible dyes or pigments, luminescent dyes or pigments which fluoresce or phosphoresce in the visible, in the UV range or in the IR range, by TiO 2 , ZnS, kaolin, ATO, FTO, Aluminum, chromium and silicon oxides or, for example, organic pigments such as phthalocyanine blue, i-Indolidineelb, Dioxazinviolett and the like, by effect pigments, such as liquid crystals, pearlescent, bronzes and / or multilayer color change pigments and / or heat-sensitive inks or pigments set. These can be used in all possible combinations. In addition, these pigments can also be used alone or in combination with other dyes and / or pigments.
  • paramagnetic, diamagnetic and also ferromagnetic substances such as iron, nickel, barium, and cobalt or their compounds or salts (for example, oxides or Sulfides) can be used.
  • ferromagnetic substances such as iron, nickel, barium, and cobalt or their compounds or salts (for example, oxides or Sulfides)
  • Particularly suitable are Fe (II) and Fe (III) oxides, Barium or cobalt ferrites, rare earths and the like.
  • the optical properties of the layer can be defined by visible colors or pigments, luminescent dyes or pigments which are in the visible, fluoresce or phosphoresce in the UV range or in the IR range, heat-sensitive inks or pigments, effect pigments, such as liquid crystals, Affect pearlescent, bronzes and / or multilayer color change pigments. These can be used in all possible combinations.
  • Various properties can also be combined by adding various additives mentioned above.
  • colored and / or conductive magnetic pigments All mentioned conductive additives can be used.
  • conductive additives can be used.
  • dyeing of magnetic pigments it is possible to use all known soluble and non-soluble dyes or pigments.
  • a brown magnetic ink can be adjusted to metallic, for example silvery, by adding metals in their color shade.
  • the security elements can be provided with a protective lacquer layer on one or both sides.
  • the protective lacquer may be pigmented or unpigmented, using as pigments 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-indolidine yellow, dioxazine violet and the like can be used.
  • luminescent dyes or pigments which fluoresce or phosphoresce in the visible, in the UV range or in the IR range, effect pigments, such as liquid crystals, pearlescent, bronzes and / or multilayer color change pigments and heat-sensitive inks or pigments can be added. These can be used in all possible combinations.
  • phosphorescent pigments can also be used alone or in combination with other dyes and / or pigments.
  • the security element according to the invention can have one or both sides a hot or cold seal adhesive or a self-adhesive coating for Be applied to or for embedding in a substrate, the optionally also be pigmented.
  • FIGS. 1 to 3 show security elements according to the invention. 1, the carrier substrate, 2 the opaque coating 3 the recesses, 4 an optionally present further functional feature.
  • the security elements or the film material may be after appropriate confectioning therefore as security features in Data carriers, in particular documents of value such as identification cards, Banknotes or labels, seals and the like suitable, but also as Packaging material, for example in the pharmaceutical, electronics and / or Food industry, for example in the form of blister foils, Folding boxes, covers, foil packaging and the like.
  • the substrates or Foil materials preferably cut into strips or threads or patches, wherein the width of the strips or threads is preferably 0.05 - 10 mm can and the patches preferably average widths or lengths of 0.3 - 20 mm.
  • the film material is preferably cut into strips, tapes, threads or patches, wherein the width of the threads, strips or tapes is preferably 0.05-50 mm and the patches are preferably average widths and lengths of 0 , 5 to 200 mm.
  • a corresponding security thread or strip can also be used as edge reinforcement of packaging, documents of value and the like in the region of the edges but also, for example, as longitudinal or transverse reinforcement in the packaging or in the document of value, whereby in each case several threads or strips are at a defined distance from one another can be provided.

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  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Laminated Bodies (AREA)
EP04021872A 2003-09-17 2004-09-15 Element de securité avec indications colorées Withdrawn EP1516957A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT14592003 2003-09-17
AT14592003 2003-09-17

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EP1516957A1 true EP1516957A1 (fr) 2005-03-23

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1832439A1 (fr) 2006-03-06 2007-09-12 JDS Uniphase Corporation Article ayant un effet optique
EP1747896A3 (fr) * 2005-07-28 2008-07-09 Thomas Dewonoto Kosasih Film avec impression de sécurité et son procédé de fabrication
US7667895B2 (en) 1999-07-08 2010-02-23 Jds Uniphase Corporation Patterned structures with optically variable effects
US7674501B2 (en) 2002-09-13 2010-03-09 Jds Uniphase Corporation Two-step method of coating an article for security printing by application of electric or magnetic field
US7876481B2 (en) 1999-07-08 2011-01-25 Jds Uniphase Corporation Patterned optical structures with enhanced security feature
US7934451B2 (en) 2002-07-15 2011-05-03 Jds Uniphase Corporation Apparatus for orienting magnetic flakes
US8025952B2 (en) 2002-09-13 2011-09-27 Jds Uniphase Corporation Printed magnetic ink overt security image
US8118963B2 (en) 2002-09-13 2012-02-21 Alberto Argoitia Stamping a coating of cured field aligned special effect flakes and image formed thereby
US8343615B2 (en) 2002-07-15 2013-01-01 Jds Uniphase Corporation Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures
US8658280B2 (en) 2002-09-13 2014-02-25 Jds Uniphase Corporation Taggent flakes for covert security applications having a selected shape
WO2014056016A1 (fr) * 2012-09-21 2014-04-17 The Décor Corporation Pty. Ltd. Perfectionnements aux récipients hermétiques
GB2516829A (en) * 2013-07-29 2015-02-11 Rue De Int Ltd Improvements in security elements
US9027479B2 (en) 2002-07-15 2015-05-12 Jds Uniphase Corporation Method and apparatus for orienting magnetic flakes
US9102195B2 (en) 2012-01-12 2015-08-11 Jds Uniphase Corporation Article with curved patterns formed of aligned pigment flakes
US9164575B2 (en) 2002-09-13 2015-10-20 Jds Uniphase Corporation Provision of frames or borders around pigment flakes for covert security applications
US9458324B2 (en) 2002-09-13 2016-10-04 Viava Solutions Inc. Flakes with undulate borders and method of forming thereof
EP1972462B2 (fr) † 2007-01-05 2019-09-18 Giesecke+Devrient Currency Technology GmbH Procédé de fabrication de feuilles de sécurité, et feuilles de sécurité
US11230127B2 (en) 2002-07-15 2022-01-25 Viavi Solutions Inc. Method and apparatus for orienting magnetic flakes
EP3600907B1 (fr) 2017-03-29 2023-06-14 Leonhard Kurz Stiftung & Co. KG Procédé de fabrication d'une feuille multicouche et feuille multicouche ainsi qu'élément de sécurité et document de sécurité
US11768321B2 (en) 2000-01-21 2023-09-26 Viavi Solutions Inc. Optically variable security devices

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EP0319157A2 (fr) * 1987-12-04 1989-06-07 Portals Limited Papier de sûreté pour des billets de banque et produits similaires
EP0330733A1 (fr) * 1988-03-04 1989-09-06 GAO Gesellschaft für Automation und Organisation mbH Elément de sécurité en forme de fil ou de bande destiné à être incorporé dans un document de sécurité et procédé pour sa fabrication
US4892336A (en) * 1986-03-18 1990-01-09 Gao Gesellschaft Fuer Automation Und Organisation Mbh Antifalsification document having a security thread embedded therein and a method for producing the same
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EP0930174A2 (fr) * 1993-12-24 1999-07-21 Giesecke & Devrient GmbH Papier de sécurité contenant un élément de sécurité en forme de fil ou de bande
WO1999045199A1 (fr) * 1998-03-02 1999-09-10 Korea Security Printing And Minting Corporation Perfectionnement d'un procede de realisation du fil de securite
US6199911B1 (en) * 1997-04-03 2001-03-13 De La Rue International Limited Security element for security paper
EP1291463A1 (fr) * 2001-09-05 2003-03-12 Hueck Folien Gesellschaft m.b.H. Procédé de préparation d'un feuille métallisée sélectivement, et le produit correspondant
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US4643912A (en) * 1982-10-29 1987-02-17 Marui Industry Co., Ltd. Method for forming a metal layer with pattern on a substrate
US4892336A (en) * 1986-03-18 1990-01-09 Gao Gesellschaft Fuer Automation Und Organisation Mbh Antifalsification document having a security thread embedded therein and a method for producing the same
EP0319157A2 (fr) * 1987-12-04 1989-06-07 Portals Limited Papier de sûreté pour des billets de banque et produits similaires
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US11768321B2 (en) 2000-01-21 2023-09-26 Viavi Solutions Inc. Optically variable security devices
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US8343615B2 (en) 2002-07-15 2013-01-01 Jds Uniphase Corporation Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures
US10173455B2 (en) 2002-07-15 2019-01-08 Viavi Solutions Inc. Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures
US10059137B2 (en) 2002-07-15 2018-08-28 Viavi Solutions Inc. Apparatus for orienting magnetic flakes
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US7934451B2 (en) 2002-07-15 2011-05-03 Jds Uniphase Corporation Apparatus for orienting magnetic flakes
US9522402B2 (en) 2002-07-15 2016-12-20 Viavi Solutions Inc. Method and apparatus for orienting magnetic flakes
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US11230127B2 (en) 2002-07-15 2022-01-25 Viavi Solutions Inc. Method and apparatus for orienting magnetic flakes
US8658280B2 (en) 2002-09-13 2014-02-25 Jds Uniphase Corporation Taggent flakes for covert security applications having a selected shape
US7674501B2 (en) 2002-09-13 2010-03-09 Jds Uniphase Corporation Two-step method of coating an article for security printing by application of electric or magnetic field
US8999616B2 (en) 2002-09-13 2015-04-07 Jds Uniphase Corporation Taggent flakes for covert security applications having a selected shape
US8118963B2 (en) 2002-09-13 2012-02-21 Alberto Argoitia Stamping a coating of cured field aligned special effect flakes and image formed thereby
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US9164575B2 (en) 2002-09-13 2015-10-20 Jds Uniphase Corporation Provision of frames or borders around pigment flakes for covert security applications
US9458324B2 (en) 2002-09-13 2016-10-04 Viava Solutions Inc. Flakes with undulate borders and method of forming thereof
EP1747896A3 (fr) * 2005-07-28 2008-07-09 Thomas Dewonoto Kosasih Film avec impression de sécurité et son procédé de fabrication
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EP1832439A1 (fr) 2006-03-06 2007-09-12 JDS Uniphase Corporation Article ayant un effet optique
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US11198315B2 (en) 2012-01-12 2021-12-14 Viavi Solutions Inc. Article with curved patterns formed of aligned pigment flakes
US10232660B2 (en) 2012-01-12 2019-03-19 Viavi Solutions Inc. Article with curved patterns formed of aligned pigment flakes
US10259254B2 (en) 2012-01-12 2019-04-16 Viavi Solutions Inc. Article with a dynamic frame formed with aligned pigment flakes
US10562333B2 (en) 2012-01-12 2020-02-18 Viavi Solutions Inc. Article with curved patterns formed of aligned pigment flakes
US10752042B2 (en) 2012-01-12 2020-08-25 Viavi Solutions Inc. Article with dynamic frame formed with aligned pigment flakes
US9102195B2 (en) 2012-01-12 2015-08-11 Jds Uniphase Corporation Article with curved patterns formed of aligned pigment flakes
US10479569B2 (en) 2012-09-21 2019-11-19 The Decor Corporation Pty. Ltd. Sealable containers
WO2014056016A1 (fr) * 2012-09-21 2014-04-17 The Décor Corporation Pty. Ltd. Perfectionnements aux récipients hermétiques
GB2516829A (en) * 2013-07-29 2015-02-11 Rue De Int Ltd Improvements in security elements
GB2516829B (en) * 2013-07-29 2017-03-01 De La Rue Int Ltd Improvements in security elements
EP3600907B1 (fr) 2017-03-29 2023-06-14 Leonhard Kurz Stiftung & Co. KG Procédé de fabrication d'une feuille multicouche et feuille multicouche ainsi qu'élément de sécurité et document de sécurité

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