EP1516957A1 - Security element with colored indicia - Google Patents
Security element with colored indicia Download PDFInfo
- 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.)
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/355—Security threads
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- 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.
Abstract
Description
Die Erfindung betrifft ein Sicherheitselement mit farbigen Codierungen, ein Verfahren zu dessen Herstellung und dessen Verwendung.The invention relates to a security element with colored codings, a Process for its preparation and its use.
Aus der EP 319 157 B1 ist ein Sicherheitspapier, das eine Sicherheitsvorrichtung enthält, bekannt, wobei die Sicherheitsvorrichtung auf einem flexiblen wasserundurchlässigen Substrat eine metallische Schicht mit Aussparungen aufweist.From EP 319 157 B1 is a security paper that a Safety device includes, known, the safety device on a flexible water-impermeable substrate with a metallic layer Has recesses.
Aus der EP 330 733 B1 ist ein Sicherheitselement in Form eines Fadens oder
eines Bandes bekannt, das eine lichtdurchlässige Kunststofffolie aufweist, die
eine opake nicht metallische Beschichtung mit Aussparungen aufweist, wobei
zumindest in den zu den Aussparungen deckungsgleichen Bereichen
farbgebende und/oder lumineszierende Substanzen vorhanden sind, durch die
sich die Aussparungen unter geeigneten Lichtbedingungen von der opaken
Beschichtung in farblich kontrastierender Form unterscheiden.
Die farbgebende oder lumineszierende Schicht wird durch vollflächiges oder
partielles Drucken aufgebracht.
Durch Überdrucken lassen sich auch bei geringster Maschinentoleranz immer
nur die Aussparungen überlappende Bereiche mit der entsprechenden
farbgebenden oder lumineszierenden Druckfarbe versehen.
Femer ist zur Erzielung des farblichen Kontrasts die zusätzliche Schicht nötig,
was bei den immer strengeren Anforderungen an die Präzision und geringe
Dicke der Sicherheitsmerkmale für Wertdokumente einen Nachteil darstellt.From EP 330 733 B1 a security element in the form of a thread or a band is known, 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.
Aufgabe der Erfindung war es ein Sicherheitsmerkmal bereitzustellen, das mindestens eine Beschichtung oder Schicht mit transparenten Aussparungen aufweist, wobei die Aussparungen ohne anschließendes oder vorhergehendes Aufbringen einer zusätzlichen farbigen Druckschicht im Durchlicht farbig oder farbig-transparent erscheinen. 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.
Gegenstand der Erfindung ist daher ein Sicherheitselement, das auf einem transparenten oder transluzenten Trägersubstrat mindestens eine opake Schicht mit zusammenhängenden oder nicht zusammenhängenden Aussparungen aufweist, wobei die Aussparungen partiell oder vollflächig färbig erscheinen, dadurch gekennzeichnet, dass die Aussparungen nach dem Aufbringen einer in einem Lösungsmittel löslichen mit Farbstoffen angereicherten Druckfarbe und anschließendem Entfernen dieser Druckfarbe mit einem entsprechenden Lösungsmittel im Durchlicht farbig erscheinen, wobei die Färbung durch die dadurch erfolgende partielle Einfärbung des vorerst farblosen transparenten Trägersubstrats erzielt wird.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.
Ein weiterer Gegenstand der Erfindung ist ein Folienmaterial, das auf einem transparenten oder transluzenten Trägersubstrat mindestens eine opake Schicht mit zusammenhängenden oder nicht zusammenhängenden Aussparungen aufweist, wobei die Aussparungen partiell oder vollflächig färbig erscheinen, dadurch gekennzeichnet, dass die Aussparungennach dem Aufbringen einer in einem Lösungsmittel löslichen mit Farbstoffen angereicherten Druckfarbe und anschließendem Entfernen dieser Druckfarbe mit einem entsprechenden Lösungsmittel im Durchlicht farbig erscheinen, wobei die Färbung durch die dadurch erfolgende partielle Einfärbung des vorerst farblosen transparenten Trägersubstrats erzielt wirdAnother 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
Das erfindungsgemäße Sicherheitselement weist also im Durchlicht farbig erscheinende zusammenhängende oder nicht zusammenhöngende Aussparungen auf, wobei dieser Effekt nicht durch eine zusätzliche farbgebende Schicht sondern durch exaktes partielles Einfärben des transparenten oder transluzenten Trägersubstrats nach oder vor dem Aufbringen der die Aussparungen aufweisenden opaken Schicht erzielt wird.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.
Als Trägersubstrat für das erfindungsgemäße Sicherheitsmerkmal kommen
beispielsweise Trägerfolien vorzugsweise flexible Kunststofffolien,
beispielsweise aus PP, MOPP, PE, PI, PEN, PET, PA, PC, PVC oder Zellglas
in Frage. Die Trägerfolien weisen vorzugsweise eine Dicke von 5 - 700 µm,
bevorzugt 5 - 200 µm, besonders bevorzugt 5 - 50 µm auf.
Ferner können auch monoaxial gereckte flexible Kunststofffolien verwendet
werden.As support substrate for the security feature according to the invention, for example, 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.
Furthermore, monoaxially stretched flexible plastic films can also be used.
Die opake Schicht kann eine metallische oder nicht metallische opake
Beschichtung sein.
Unter metallischen Beschichtungen werden sowohl Metall-Beschichtungen als
auch Beschichtungen mit Metallverbindungen verstanden.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.
Als metallische Beschichtungen kommen beispielsweise Schichten aus Al, Cu, Fe, Ag, Au, Cr, Ni, Zn und dergleichen in Frage. Als Metallverbindungen sind beispielsweise Oxide oder Sulfide von Metallen, insbesondere TiO2, Cr-Oxide, ZnS, ITO, ATO, FTO, ZnO, Al2O3 oder Siliciumoxide geeignet. Geeignete Legierungen sind beispielsweise Cu-Al Legierungen, Cu-Zn Legierungen und dergleichen geeignet.As metallic coatings, for example, layers of Al, Cu, Fe, Ag, Au, Cr, Ni, Zn and the like in question. Examples of 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.
Die nicht durchgängigen metallischen Beschichtungen können sowohl durch Drucken von Metallpigmenten, beispielsweise AI-Plättchen, einer metallpigmenthaltigen Druckfarbe in jedem bekannten Druckverfahren, als auch durch Aufdampfen, Sputtem, Abscheiden, Metallisieren und gegebenenfalls anschließendes gegebenenfalls partielles Demetallisieren mittels Ätztechniken oder unter Verwendung eines vorhergehenden löslichen Farbauftrags und dergleichen aufgebracht werden.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.
Unter metallisch erscheinenden oder reflektierenden Beschichtungen werden
Beschichtungen verstanden, die elektromagnetische Wellen, vorzugsweise im
sichtbaren Bereich reflektieren, beispielsweise Pigmente, Farben, Glas- oder
Keramikbeschichtungen, Kunststoffpigmente oder Metalleffektfarben.
Metalleffektfarben sind Farben oder Lacke z.B.: auf Basis von dotierten oder
undotierten Halbleiterpigmenten, vorzugsweise in Form von Plättchen. Beispiele
für derartige Pigmente sind beispielsweise Silizium-, Gallium- oder Tellur-Pigmente,
die einen metallischen Glanz aufweisen. Diese Pigmente und die
unter Verwendung dieser Pigmente hergestellte Farbe oder der damit
hergestellte Lack weist einen metallischen Glanz auf und erscheint daher visuell
als metallisch glänzende oder reflektierende Beschichtung.
Unter Metalleffektfarben werden hier auch auf Basis von Glimmer, belegt mit
TiO2 oder Fe, hergestellte Farben oder Lacke verstanden.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.
Als Lösungsmittel kommen beispielsweise Wasser oder organische
Lösungsmittel, wie Alkohole, Ketone, Aldehyde, Aliphate oder Aromate und
dergleichen in Frage.
Als Bindemittel kommen verschiedene natürliche oder synthetische Bindemittel
in Frage, z.B. natürliche Öle und Harze, wie Phenolformaldehyd, Harnstoff-,
Melamin-, Keton-, Aldehyd-, Epoxy-, Polyterpenharzen verwenden. Als
zusätzliche Bindemittel können beispielsweise Polyester, Polyvinylakohole,
Polyvinylacetate, - ether, -propionate und -chloride, Poly(methyl)acrylate,
Polystyrole, Olefine, Nitrocellulose, Polyisocyanat, Urethansysteme und
dergleichen.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. As 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.
Als nicht metallische opake Beschichtungen kommen auch beispielsweise bekannte opake Druckfarben in Betracht.As non-metallic opaque coatings are also, for example well-known opaque printing inks.
In einer ersten Ausführungsform des Verfahrens wird die mit den Farbstoffen angereicherte Druckfarbe partiell auf das Trägersubstrat aufgebracht, anschließend die opake Beschichtung, beispielsweise durch Metallisieren aufgebracht, worauf die Druckfarbe mit einem geeigneten Lösungsmittel, gegebenenfalls unterstützt durch mechanische Einwirkung entfernt wird, wobei in jenen Bereichen in denen die Druckfarbe auf dem Substrat vorhanden war einerseits die Färbung auf dem Trägersubstrat entsteht, andererseits auch die metallische Beschichtung zusammen mit der Druckfarbe entfernt wird. In a first embodiment of the method, the with the dyes enriched printing ink partially applied to the carrier substrate, then the opaque coating, for example by metallization applied, whereupon the printing ink with a suitable solvent, optionally supported by mechanical action is removed, wherein in those areas where the ink was present on the substrate on the one hand the coloring on the carrier substrate arises, on the other hand also the metallic coating is removed together with the printing ink.
Die metallische oder nicht metallische opake Beschichtung weist dann die entsprechenden Aussparungen in Form von Mustern, Zeichen, geometrischen Figuren, Linien, Guillochen und dergleichen auf oder ist in Form von Mustern, Zeichen, geometrischen Figuren, Linien, Guillochen und dergleichen auf das Trägersubstrat aufgebracht.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.
In einer weiteren Ausführungsform kann zuerst die metallische oder nicht
metallische opake Beschichtung mit den entsprechenden Aussparungen partiell
auf das Trägersubstrat aufgebracht werden.
Anschließend wird auf das mit der partiellen opaken Beschichtung versehene
Trägersubstrat eine in einem Lösungsmittel lösliche und mit Farbstoffen
angereicherte Druckfarbe aufgebracht.In a further embodiment, first 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.
Die Druckfarbe geht mit der opaken Beschichtung keine Verbindung ein. Das verwendete Lösungsmittel wird so gewählt, dass es die opake Beschichtung nicht anlöst oder löst.The ink does not bond with the opaque coating. The The solvent used is chosen to be the opaque coating does not trigger or dissolves.
Vorzugsweise wird eine biologisch abbaubare Druckfarbe mit guten
rheologischen Eigenschaften, hoher Alkoholtoleranz und ausgezeichneter
biologischer Abbaubarkeit, bestehend aus einer Basis aus 5 - 30 Gew% Casein
oder 5 - 30 Gew% Stärke oder 5- 35 Gew% Hydroxypropylcellulose oder 5 -30
Gew% Polyvinylalkohol und 5 - 80 Gew% eines Farbstoffes und 15 - 87 Gew%
eines Lösungsmittels aufgebracht.
Gegebenfalls kann die Druckfarbe auch pigmentiert sein.
Es kann aber auch ein reiner Farbauftrag erfolgen.
Als Farbstoffe kommen alle in einem Lösungsmittel löslichen Farbstoffe,
beispielsweise Azofarbstoffe, Phthalocyaninblau, i-Indolidingelb,
Dioxazinviolett, Triphenylmethanfarbstoffe, Metallkomplex-Farbstoffe,
anionische oder kationische Färbstoffe und Sublimationsfarbstoffe,
Textilfarbstoffe, Lumineszenzfarbstoffe, natürliche oder naturidente Farbstoffe,
Papierfarbstoffe und dergleichen in Frage. Preferably, 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.
Optionally, 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.
Als Lösungsmittel kommen je nach verwendetem Trägersubstrat beispielsweise Wasser, Glykol, Ethylacetat, Methylethylketon, Ethanol und dergleichen in Frage. Besonders gute Ergebnisse werden beispielsweise bei der Verwendung von PET als Trägersubstrat und Glykol als Lösungsmittel oder Quellmittel erzielt.As 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.
Die Aufbringung der Druckfarbe kann auf jede bekannte konventionelle Weise erfolgen, beispielsweise durch Spin-Coating, Aufstreichen, Aufdampfen, durch Drucken, (Tiefdruck, Flexodruck, Siebdruck, Offsetdruck, Digitaldruck und dergleichen) durch Aufsprühen, Sputtem oder Walzenauftragstechniken und dergleichen erfolgen.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.
Der in der Druckfarbe vorhandene Farbstoff migiriert in das Trägersubstrat und zwar definiert in jenem Bereich, in dem die Aussparungen der opaken Schichten vorhanden sind oder anschließend durch Entfärben generiert werden und färbt jeweils definiert in diesem Bereich das Trägersubstrat ein.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.
Bei Verwendung monoaxial gereckter flexibler Kunststofffolien als Trägersubstrat lagern sich die organischen Farbstoffe bevorzugt in Richtung der Hauptverstreckung an, wodurch zusätzliche optische Effekte wie gerichtete oder polarisierte Emission der Strahlung erzeugt werden.When using monoaxially stretched flexible plastic films as Carrier substrate, the organic dyes store preferably in the direction of Main stretch, causing additional optical effects such as directional or polarized emission of the radiation.
In Abhängigkeit vom verwendeten Trägersubstrat, dem verwendeten Farbstoff und dem verwendeten Lösungsmittel wird die Verweildauer der Druckfarbe bzw. des Farbauftrags auf dem beschichteten Trägersubstrat gewählt.Depending on the carrier substrate used, the dye used and the solvent used, the residence time of the ink or of the paint applied to the coated carrier substrate.
Die Migration der Druckfarbe in das Trägersubstrat kann einerseits durch Anquellen des Trägersubstrats durch das in der Druckfarbe vorhandene Lösungsmittel, andererseits durch Temperatur oder durch eine Kombination der beiden Mechanismen erfolgen. 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.
Nach dem Trocknen wird die lösliche Druckfarbe mittels eines geeigneten Lösungsmittels, vorzugsweise Wasser, gegebenenfalls kombiniert mit mechanischer Einwirkung, entfernt. In den durch die opake Beschichtung definierten Aussparungen zeigt sich eine in Abhängigkeit vom verwendeten Farbstoff definierte Einfärbung des Trägersubstrats, während die von der opaken Beschichtung bedeckten Bereiche und die Oberfläche der opaken Beschichtung frei von jeglicher Färbung sind.After drying, the soluble ink is colored by means of a suitable Solvent, preferably water, optionally combined with mechanical action, removed. In through 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.
Gegebenenfalls können durch ein- oder mehrmalige Wiederholung des Vorgangs mit entsprechenden Druckfarben, die unterschiedliche Farbstoffe enthalten, definierte Mischfarben erzeugt werden.Optionally, by one or more repetition of the Process with appropriate printing inks, the different dyes contain defined mixed colors.
Anschließend kann das so beschichtete und definiert gefärbte Trägersubstrat
mit weiteren funktionellen und/oder dekorativen Schichten versehen werden.
Die Aufbringung dieser Schicht(en) kann durch ein beliebiges Verfahren,
beispielsweise durch Tiefdruck, Flexodruck, Siebdruck, Offset-, Digitaldruck
(Inkjet-, Trocken- und Flüssigtoner) und dergleichen erfolgen.Subsequently, 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.
Als Farb- bzw. Lackschichten können jeweils verschiedenste Zusammensetzungen verwendet werden. Die Zusammensetzung der einzelnen Schichten kann insbesondere nach deren Aufgabe variieren, also ob die einzelnen Schichten ausschließlich Dekorationszwecken dienen oder eine funktionelle Schicht darstellen sollen oder ob die Schicht sowohl eine Dekorations- als auch eine Funktionsschicht sein soll.As 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.
Die zu druckenden Schichten können pigmentiert oder nicht pigmentiert sein.
Als Pigmente können alle bekannten Pigmente, beispielsweise Pigmente auf
anorganischer Basis, wie Titandioxid, Zinksulfid, Kaolin, ITO, ATO, FTO,
Aluminium, Chrom- und Siliciumoxide, oder Pigmente auf organischer Basis,
wie Phthalocyaninblau, i-Indolidingelb, Dioxazinviolett und dergleichen als auch
farbige und/oder verkapselte Pigmente in chemisch, physikalisch oder reaktiv
trocknenden Bindemittelsystemen verwendet werden. Als Farbstoffe kommen
beispielsweise 1,1- oder 1,2- Chrom-Cobalt-Komplexe in Frage.
Dabei sind lösungsmittelhaltige Farben- und/oder Lacksysteme, wässrige und
auch lösungsmittelfreie Lacksysteme verwendbar.
Als Bindemittel kommen verschiedene natürliche oder synthetische Bindemittel
in Frage.The layers to be printed may be pigmented or unpigmented. As 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.
Die funktionellen Schichten beispielsweise können bestimmte elektrische, magnetische, chemische, physikalische und auch optische Eigenschaften aufweisen.For example, the functional layers may have certain electrical, magnetic, chemical, physical and also optical properties exhibit.
Zur Einstellung elektrischer Eigenschaften, beispielsweise Leitfähigkeit können beispielsweise Graphit, Ruß, leitfähige organische oder anorganische Polymere, Metallpigmente (beispielsweise Kupfer, Aluminium, Silber, Gold, Eisen, Chrom und dergleichen), Metalllegierungen wie Kupfer-Zink oder Kupfer-Aluminium oder auch amorphe oder kristalline keramische Pigmente wie ITO, FTO, ATO und dergleichen zugegeben werden. Weiters können auch dotierte oder nicht dotierte Halbleiter wie beispielsweise Silicium, Germanium, Galliumarsenid, Arsen oder lonenleiter wie amorphe oder kristalline Metalloxide oder Metallsulfide als Zusatz verwendet werden. Ferner können zur Einstellung der elektrischen Eigenschaften der Schicht polare oder teilweise polare Verbindungen, wie Tenside oder unpolare Verbindungen wie Silikonadditive oder hygroskopische oder nicht hygroskopische Salze verwendet oder zugesetzt werden. Ebenso können intrinsisch leitfähige organische Polymere wie Polyanilin, Polyacetylen, Polyethylendioxythiophen und/oder Polystyrolsulfonat zugesetzt werden.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. Further, for adjustment the electrical properties of 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. Similarly, intrinsically conductive organic polymers such as polyaniline, polyacetylene, polyethylenedioxythiophene and / or Polystyrene sulfonate can be added.
Als elektrisch leitfähige Schichten können beispielsweise auch metallische oder polymere leitfähige Schichten verwendet werden.As electrically conductive layers, for example, metallic or polymeric conductive layers are used.
Als metallische leitfähige Schichten kommen beispielsweise Farben oder Lacke
mit Metallpigmenten (beispielsweise Kupfer, Aluminium, Silber, Gold, Eisen,
Chrom und dergleichen), Metalllegierungen wie Kupfer-Zink oder Kupfer-Aluminium
in Frage.
Weiters können auch dotierte oder nicht dotierte Halbleiter wie beispielsweise
Silicium, Germanium oder lonenleiter wie amorphe oder kristalline Metalloxide
oder Metallsulfide als Zusatz verwendet werden. Ferner können zur Einstellung
der elektrischen Eigenschaften der Schicht polare oder teilweise polare
Verbindungen, wie Tenside oder unpolare Verbindungen wie Silikonadditive
oder hygroskopische oder nicht hygroskopische Salze verwendet oder
zugesetzt werden.Examples of 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.
Furthermore, it is also possible to use 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. Furthermore, 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.
Die Aufbringung der elektrisch leitfähigen Schicht kann beispielsweise durch bekannte Demetallisierungsverfahren unter Verwendung eines Ätzmittels oder vorzugsweise einer löslichen Waschfarbe erfolgen.The application of the electrically conductive layer can, for example, by known demetallization method using an etchant or preferably a soluble wash color.
Als nicht metallische leitfähige Schicht wird beispielsweise eine mit Ruß, Graphit, amorphen oder kristallinen keramischen Pigmenten wie ITO, ATO, FTO und dergleichen pigmentierte Dispersion oder Lösung in Ethylenacrylatcopolymer, Nitrocellulose, PVB, PA, Acrylat oder PVC oder deren Copolymeren verwendet.As a 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.
Als elektrisch leitfähige polymere Schichten können beispielsweise Polyacetylen, Poly-p-phenylen, Polypyrrole, Polythiophene, Poly-pphenylenvinylen, niedermolekulare makrocyclische Halbleiter, Organopolysilane, Polyschwefelnitrid und/oder Polyaniline und/oder deren Derivate verwendet werden. Bevorzugt werden als elektrisch leitfähige Polymere Polyanilin oder Polythiophene verwendet. Besonders bevorzugt wird als elektrisch leitfähiges Polymer Polyethylendioxythiophen verwendet.As 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. Are preferred as electrically conductive Polymers used polyaniline or polythiophene. Particularly preferred used as electrically conductive polymer Polyethylendioxythiophen.
Die Polymere können in Form einer Dispersion oder in Form ihrer Monomere bzw. Vorpolymere mit nachfolgender Aufbringung eines Initiator und/oder Katalysator oder bereits in Mischung mit einem Initiator und/oder Katalysator auf ein Trägersubstrat aufgebracht werden. 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.
Als handelsübliche elektrische leitfähige Polymersuspension ist beispielsweise
Baytron® P der Fa. H.C. Stark einsetzbar. Als Dispersionsmittel kommen
beispielsweise inerte Lösungsmittel, vorzugsweise wässrige Lösungsmittel oder
Alkohole, wie i-Propanol in Frage. Gegebenenfalls können den
Polymerdispersionen auch Matrixpolymere, beispielsweise wasserlösliche
Polyester, Polyurethane, Polystyrolsulfonate, Polyacrylate oder
Ethylenacrylatcopolymere als Matrixpolymere zugesetzt werden.
Beispielsweise kann Polyethylendioxythiophen mit Polystyrolsulfonat als
Matrixpolymer verwendet werden.
Es werden aber bevorzugt die Monomere bzw. Vorpolymere zur Bildung der
elektrisch leitfähigen Polymere aufgebracht und in situ polymerisiert.For example, 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. If desired, it is also possible to add matrix polymers, for example water-soluble polyesters, polyurethanes, polystyrene sulfonates, polyacrylates or ethylene acrylate copolymers, as matrix polymers to the polymer dispersions.
For example, polyethylenedioxythiophene can be used with polystyrene sulfonate as the matrix polymer.
However, the monomers or prepolymers are preferably applied to form the electrically conductive polymers and polymerized in situ.
Dabei können als Initiator und/oder Katalysator sowohl radikalische, als auch Redox- oder Photo-Initiator und/oder Katalysatoren und/oder -Katalysatoren, beispielsweise UV-Initiatoren, verwendet werden.In this case, as an initiator and / or catalyst both radical, and Redox or photo-initiator and / or catalysts and / or catalysts, For example, UV initiators are used.
Sowohl Monomer als auch Initiator und/oder Katalysator und/oder Katalysator werden bevorzugt in einem Lösungs- bzw. Dispersionsmittel bereitgestellt, beispielsweise in einem Alkohol, wie Propanol oder n-Butanol.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.
Besonders bevorzugt wird als Initiator/Katalysator Fe(III)toluolsulfonat verwendet. Fe(III)toluolsulfonat ist ein radikalischer Initiator bzw. Katalysator, der zugleich eine Redoxreaktion bei der Polymerisation initiiert. Das Fe(III)-lon wirkt als Initiator und das Toluolsolfonat bildet im leitfähigen Polymer die MatrixParticularly 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
Die elektrisch leitfähigen Polymerschichten können auch pigmentiert sein, wobei alle bekannten Pigmente geeignet sind. Soll die Transparenz nicht deutlich beeinflusst werden, sind anerdings stark deckende bzw. färbende Pigmente wie Ruß oder Graphit nicht geeignet.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.
Der Anteil an Pigmenten im Festkörper kann bis zu 40% betragen. The proportion of pigments in the solid state can be up to 40%.
Gegebenenfalls kann das Trägermaterial vorher zur Verbesserung der Haftung des verwendeten leitfähigen Polymers mit einem Haftvermittler behandelt werden. Im Allgemeinen ist jedoch insbesondere bei der Verwendung der in situ Polymerisation der Monomere bzw. Vorpolymere die Haftung der elektrisch leitfähigen Polymere auf allen Trägersubstraten durchaus mehr als befriedigend.Optionally, the substrate may be previously to improve adhesion the conductive polymer used is treated with a coupling agent become. In general, however, especially when using the in situ Polymerization of the monomers or prepolymers the adhesion of the electrically conductive polymers on all carrier substrates quite more than satisfying.
Die magnetischen Eigenschaften der Schicht können beispielsweise mit bekannten Magnetpigmentfarben erzeugt werden. Besonders geeignet zur Herstellung von Schichten mit gegebenenfalls variierbaren magnetischen Eigenschaften sind Magnetfarben, die in der Lage sind ein magnetisches Feld mit hoher Flussdichte hervorzurufen. Der messbare Gradient des magnetischen Flusses wird dann durch Dickenmodulation der magnetischen Schichten erzeugt.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.
Besonders geeignet sind Magnetpigmentfarben mit Pigmenten auf Basis von Fe-oxiden, wie Fe2O3 oder Fe3O4, Eisen, Nickel, Cobalt und deren Legierungen, Barium oder Cobalt-ferrite, hart- und weich magnetische Eisen- und Stahlsorten in wässrigen bzw. lösungsmittelhaltigen Dispersionen. Als Lösungsmittel kommen beispielsweise i-Propanol, Ethylacetat, Methylethylketon, Methoxypropanol und deren Mischungen in Frage.Particularly suitable are magnetic pigment 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. Examples of suitable solvents are i-propanol, ethyl acetate, methyl ethyl ketone, methoxypropanol and mixtures thereof.
Vorzugsweise sind die Pigmente in Acrylat- Polymerdispersionen mit einem Molekulargewicht von 150.000 bis 300.000, in Acrylat-Urethan-Dispersionen, Acrylat- Styrol oder PVC-haltigen Dispersionen oder in lösemittelhaltige derartige Dispersionen eingebracht.Preferably, 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.
Insbesondere geeignet sind Magnetfarben mit Pigmenten auf Basis von Cr/Ni-Stahl.
Diese Magnetfarben zeigen im Gegensatz zu den konventionellen
Magnetfarben, die schwarz, braun oder grau erscheinen, ein silbriges
Erscheinungsbild und weisen gleichzeitig die oben beschriebenen
erforderlichen magnetischen Eigenschaften auf.
Dadurch ist es möglich, das für viele Anwendungen erwünschte bzw.
erforderliche metallisch glänzende Erscheinungsbild in einem Arbeitsgang
bereits durch Verdrucken dieser Magnetfarben zu erzeugen. Ein Überdrucken
bzw. Beschichten mit metallischen oder Metall-Schichten zur Erzeugung des
gewünschten Erscheinungsbildes ist daher nicht nötig, kann aber
beispielsweise zur Einbringung weiterer Identifikationsmerkmale problemlos
erfolgen.Particularly suitable are magnetic paints with pigments based on Cr / Ni steel. 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.
Ferner können optisch wirksamen Strukturen auf dem Trägersubstrat vorhanden sein, die auf jeweils jede bekannte Weise hergestellt werden können. Vorzugsweise werden diese beugungswirksamen Strukturen jedoch durch Beschichten des Trägersubstrats, das gegebenenfalls bereits eine oder mehrere der beschriebenen Schichten aufweist, mit einem strahlungshärtbaren Lack, der bis zum Gelpunkt durch Anregung mit Strahlung einer definierten Wellenlänge vorgehärtet wird, und gleichzeitige Abformung der Oberflächenstruktur, worauf die weitere Aushärtung (Haupthärtung) des strahlungshärtbaren Lacks durch Anregung Strahlung einer zum Vorhärtungsschritt unterschiedlichen Wellenlänge durchgeführt, worauf ggf. eine Nachhärtung erfolgt.Furthermore, optically active structures on the carrier substrate present in any known manner can. Preferably, however, 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.
Die optischen Eigenschaften der jeweiligen Schicht werden durch sichtbare Farbstoffe bzw. Pigmente, lumineszierende Farbstoffe bzw. Pigmente, die im sichtbaren, im UV-Bereich oder im IR-Bereich fluoreszieren bzw. phosphoreszieren, durch TiO2, ZnS, Kaolin, ATO, FTO, Aluminium, Chrom- und Siliziumoxide oder beispielsweise organische Pigmente wie Phthalocyaninblau, i-Indolidingelb, Dioxazinviolett und dergleichen, durch Effektpigmente, wie Flüssigkristalle, Perlglanz, Bronzen und/oder Multilayer-Farbumschlagpigmente und/oder wärmeempfindliche Farben bzw. Pigmente eingestellt. Diese sind in allen möglichen Kombinationen einsetzbar. Zusätzlich können auch diese Pigmente jeweils allein oder in Kombination mit anderen Farbstoffen und/oder Pigmenten eingesetzt werden.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.
Zur Einstellung der magnetischen Eigenschaften können paramagnetische, diamagnetische und auch ferromagnetische Stoffe, wie Eisen, Nickel, Barium, und Cobalt oder deren Verbindungen oder Salze (beispielsweise Oxide oder Sulfide) verwendet werden. Besonders geeignet sind Fe(II) und Fe(III)oxde, Barium- bzw. Cobaltferrite, seltene Erden und dergleichen.To adjust the magnetic properties, 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. Particularly suitable are Fe (II) and Fe (III) oxides, Barium or cobalt ferrites, rare earths and the like.
Die optischen Eigenschaften der Schicht lassen sich durch sichtbare Farben bzw. Pigmente, lumineszierende Farbstoffe bzw. Pigmente, die im sichtbaren, im UV-Bereich oder im IR-Bereich fluoreszieren oder phosphoreszieren, wärmeempfindliche Farben bzw. Pigmente, Effektpigmente, wie Flüssigkristalle, Perlglanz-, Bronzen und/oder Multilayer-Farbumschlagspigmente beeinflussen. Diese sind in allen möglichen Kombinationen einsetzbar.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.
Es können auch verschiedene Eigenschaften durch Zufügen verschiedener
oben genannter Zusätze kombiniert werden. So ist es möglich angefärbte
und/oder leitfähige Magnetpigmente zu verwenden. Dabei sind alle genannten
leitfähigen Zusätze verwendbar.
Speziell zum Anfärben von Magnetpigmenten lassen sich alle bekannten
löslichen und nicht löslichen Farbstoffe bzw. Pigmente verwenden. So kann
beispielsweise eine braune Magnetfarbe durch Zugabe von Metallen in ihrem
Farbton metallisch, beispielsweise silbrig eingestellt werden.Various properties can also be combined by adding various additives mentioned above. Thus, it is possible to use colored and / or conductive magnetic pigments. All mentioned conductive additives can be used.
Especially for the dyeing of magnetic pigments it is possible to use all known soluble and non-soluble dyes or pigments. For example, a brown magnetic ink can be adjusted to metallic, for example silvery, by adding metals in their color shade.
Ferner können die Sicherheitselemente mit einer Schutzlackschicht ein- oder beidseitig versehen sein. Der Schutzlack kann pigmentiert oder nicht pigmentiert sein, wobei als Pigmente alle bekannte Pigmente oder Farbstoffe, beispielsweise TiO2, ZnS, Kaolin, ATO, FTO, Aluminium, Chrom- und Siliziumoxide oder beispielsweise organische Pigmente wie Phthalocyaninblau, i-Indolidingelb, Dioxazinviolett und dergleichen verwendet werden können. Ferner können lumineszierende Farbstoffe bzw. Pigmente, die im sichtbaren, im UV-Bereich oder im IR-Bereich fluoreszieren bzw. phosphoreszieren, Effektpigmente, wie Flüssigkristalle, Perlglanz, Bronzen und/oder Multilayer-Farbumschlagpigmente und wärmeempfindliche Farben bzw. Pigmente zugegeben werden. Diese sind in allen möglichen Kombinationen einsetzbar. Zusätzlich können auch phosphoreszierende Pigmente allein oder in Kombination mit anderen Farbstoffen und/oder Pigmenten eingesetzt werden.Furthermore, 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. Furthermore, 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. In addition, phosphorescent pigments can also be used alone or in combination with other dyes and / or pigments.
Ferner kann das erfindungsgemäße Sicherheitselement ein- oder beidseitig mit einem Heiß- oder Kaltsiegelkleber oder einer Selbstklebebeschichtung zur Aufbringung auf oder zur Einbettung in ein Substrat versehen sein, der gegebenenfalls auch pigmentiert sein kann.Furthermore, 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.
In den Fig. 1 bis 3 sind erfindungsgemäße Sicherheitselemente dargestellt.
Darin bedeuten 1 das Trägersubstrat, 2 die opake Beschichtung 3 die
Aussparungen, 4 ein gegebenenfalls vorhandenes weiteres funktionelles
Merkmal.FIGS. 1 to 3 show security elements according to the invention.
1, the carrier substrate, 2 the
Die Sicherheitselemente bzw. das Folienmaterial sind gegebenenfalls nach entsprechender Konfektionierung daher als Sicherheitsmerkmale in Datenträgem, insbesondere Wertdokumenten wie Ausweisen, Karten, Banknoten oder Etiketten, Siegeln und dergleichen geeignet, aber auch als Verpackungsmaterial beispielsweise in der pharmazeutischen, der Elektronikund/oder Lebensmittelindustrie, beispielsweise in Form Blisterfolien, Faltschachteln, Abdeckungen, Folienverpackungen und dergleichen geeignet.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.
Für die Anwendung als Sicherheitsmerkmale werden die Substrate bzw. Folienmaterialien bevorzugt in Streifen oder Fäden oder Patches geschnitten, wobei die Breite der Streifen oder Fäden vorzugsweise 0,05 - 10 mm betragen kann und die Patches vorzugsweise mittlere Breiten bzw. Längen von 0,3 - 20 mm. For application as security features, 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.
Für die Anwendung in oder auf Verpackungen wird das Folienmaterial
bevorzugt in Streifen, Bänder, Fäden oder Patches geschnitten, wobei die
Breite der der Fäden, Streifen bzw. Bänder vorzugsweise 0,05 - 50 mm beträgt
und die Patches vorzugsweise mittlere Breiten und Längen von 0,5 - 200 mm
aufweisen.
Ein entsprechender Sicherheitsfaden oder -streifen kann auch als
Randverstärkung von Verpackungen, Wertdokumenten und dergleichen im
Bereich der Kanten aber auch als beispielsweise Längs- oder Quer -
Verstärkung in der Verpackung oder im Wertdokument verwendet werden,
wobei auch jeweils mehrer Fäden oder Streifen in definiertem Abstand
zueinander vorgesehen sein können.For use in or on packages, 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.
Claims (42)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT14592003 | 2003-09-17 | ||
AT14592003 | 2003-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1516957A1 true EP1516957A1 (en) | 2005-03-23 |
Family
ID=34140230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04021872A Withdrawn EP1516957A1 (en) | 2003-09-17 | 2004-09-15 | Security element with colored indicia |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1516957A1 (en) |
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EP1832439A1 (en) | 2006-03-06 | 2007-09-12 | JDS Uniphase Corporation | Article having an optical effect |
EP1747896A3 (en) * | 2005-07-28 | 2008-07-09 | Thomas Dewonoto Kosasih | Film with security printing and method for manufacturing the same |
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 (en) * | 2012-09-21 | 2014-04-17 | The Décor Corporation Pty. Ltd. | Improvements in sealable containers |
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 (en) † | 2007-01-05 | 2019-09-18 | Giesecke+Devrient Currency Technology GmbH | Method for producing security foils, and security foils |
US11230127B2 (en) | 2002-07-15 | 2022-01-25 | Viavi Solutions Inc. | Method and apparatus for orienting magnetic flakes |
US11768321B2 (en) | 2000-01-21 | 2023-09-26 | Viavi Solutions Inc. | Optically variable security devices |
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US7880943B2 (en) | 1999-07-08 | 2011-02-01 | Jds Uniphase Corporation | Patterned optical structures with enhanced security feature |
US7667895B2 (en) | 1999-07-08 | 2010-02-23 | Jds Uniphase Corporation | Patterned structures with optically variable effects |
US7876481B2 (en) | 1999-07-08 | 2011-01-25 | Jds Uniphase Corporation | Patterned optical structures with enhanced security feature |
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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 |
US7934451B2 (en) | 2002-07-15 | 2011-05-03 | Jds Uniphase Corporation | Apparatus for orienting magnetic flakes |
US9027479B2 (en) | 2002-07-15 | 2015-05-12 | Jds Uniphase Corporation | Method and apparatus for orienting magnetic flakes |
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 |
US8118963B2 (en) | 2002-09-13 | 2012-02-21 | Alberto Argoitia | Stamping a coating of cured field aligned special effect flakes and image formed thereby |
US8999616B2 (en) | 2002-09-13 | 2015-04-07 | Jds Uniphase Corporation | Taggent flakes for covert security applications having a selected shape |
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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 |
USRE45762E1 (en) | 2002-09-13 | 2015-10-20 | Jds Uniphase Corporation | Printed magnetic ink overt security image |
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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 |
US11198315B2 (en) | 2012-01-12 | 2021-12-14 | Viavi Solutions Inc. | Article with curved patterns formed of aligned pigment flakes |
US9102195B2 (en) | 2012-01-12 | 2015-08-11 | Jds Uniphase Corporation | Article with curved patterns formed of aligned pigment flakes |
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