US20020160194A1 - Multi-layered magnetic pigments and foils - Google Patents
Multi-layered magnetic pigments and foils Download PDFInfo
- Publication number
- US20020160194A1 US20020160194A1 US09/844,261 US84426101A US2002160194A1 US 20020160194 A1 US20020160194 A1 US 20020160194A1 US 84426101 A US84426101 A US 84426101A US 2002160194 A1 US2002160194 A1 US 2002160194A1
- Authority
- US
- United States
- Prior art keywords
- magnetic
- pigment
- layer
- flake
- pigment flake
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/369—Magnetised or magnetisable materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0078—Pigments consisting of flaky, non-metallic substrates, characterised by a surface-region containing free metal
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/62—Metallic pigments or fillers
-
- B42D2033/16—
-
- B42D2035/24—
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
- C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
- C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
- C01P2004/86—Thin layer coatings, i.e. the coating thickness being less than 0.1 time the particle radius
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/65—Chroma (C*)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/66—Hue (H*)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/90—Other properties not specified above
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/1004—Interference pigments characterized by the core material the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2
- C09C2200/1008—Interference pigments characterized by the core material the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2 comprising at least one metal layer adjacent to the core material, e.g. core-M or M-core-M
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/102—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin
- C09C2200/1025—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin comprising at least one metal layer adjacent to core material, e.g. core-M or M-core-M
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/1054—Interference pigments characterized by the core material the core consisting of a metal
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/1054—Interference pigments characterized by the core material the core consisting of a metal
- C09C2200/1058—Interference pigments characterized by the core material the core consisting of a metal comprising a protective coating on the metallic layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/1087—Interference pigments characterized by the core material the core consisting of bismuth oxychloride, magnesium fluoride, nitrides, carbides, borides, lead carbonate, barium or calcium sulfate, zinc sulphide, molybdenum disulphide or graphite
- C09C2200/1091—Interference pigments characterized by the core material the core consisting of bismuth oxychloride, magnesium fluoride, nitrides, carbides, borides, lead carbonate, barium or calcium sulfate, zinc sulphide, molybdenum disulphide or graphite comprising at least one metal layer adjacent to the core material, e.g. core-M or M-core-M
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/24—Interference pigments comprising a metallic reflector or absorber layer, which is not adjacent to the core
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
- C09C2200/301—Thickness of the core
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2220/00—Methods of preparing the interference pigments
- C09C2220/20—PVD, CVD methods or coating in a gas-phase using a fluidized bed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/254—Polymeric or resinous material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
- Y10T428/257—Iron oxide or aluminum oxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
Definitions
- the present invention relates generally to pigments and foils.
- the present invention relates to multilayered pigment flakes and foils which have magnetic layers, and pigment compositions that incorporate multilayer pigment flakes having magnetic layers.
- pigments, colorants, and foils have been developed for a wide variety of applications.
- magnetic pigments have been developed for use in applications such as decorative cookware, creating patterned surfaces, and security devices.
- color shifting pigments have been developed for such uses as cosmetics, inks, coating materials, ornaments, ceramics, automobile paints, anti-counterfeiting hot stamps, and anti-counterfeiting inks for security documents and currency.
- Color shifting pigments, colorants, and foils exhibit the property of changing color upon variation of the angle of incident light, or as the viewing angle of the observer is shifted.
- the color-shifting properties of pigments and foils can be controlled through proper design of the optical thin films or orientation of the molecular species used to form the flake or foil coating structure. Desired effects can be achieved through the variation of parameters such as thickness of the layers forming the flakes and foils and the index of refraction of each layer.
- the changes in perceived color which occur for different viewing angles or angles of incident light are a result of a combination of selective absorption of the materials comprising the layers and wavelength dependent interference effects.
- the interference effects which arise from the superposition of light waves that have undergone multiple reflections, are responsible for the shifts in color perceived with different angles.
- the reflection maxima changes in position and intensity, as the viewing angle changes, due to changing interference effects arising from light path length differences in the various layers of a material which are selectively enhanced at particular wavelengths.
- One manner of producing a multilayer thin film structure is by forming it on a flexible web material with a release layer thereon.
- the various layers are deposited on the web by methods well known in the art of forming thin coating structures, such as PVD, sputtering, or the like.
- the multilayer thin film structure is then removed from the web material as thin film color shifting flakes, which can be added to a polymeric medium such as various pigment vehicles for use as an ink or paint.
- additives can be added to the inks or paints to obtain desired color shifting results.
- Color shifting pigments or foils are formed from a multilayer thin film structure that includes the same basic layers. These include an absorber layer(s), a dielectric layer(s), and optionally a reflector layer, in varying layer orders.
- the coatings can be formed to have a symmetrical multilayer thin film structure, such as:
- absorber/dielectric/reflector/dielectric/absorber [0009] absorber/dielectric/reflector/dielectric/absorber; or
- Coatings can also be formed to have an asymmetrical multilayer thin film structure, such as:
- U.S. Pat. No. 5,135,812 to Phillips et al. which is incorporated by reference herein, discloses color-shifting thin film flakes having several different configurations of layers such as transparent dielectric and semi-transparent metallic layered stacks.
- a symmetric three layer optical interference coating is disclosed which comprises first and second partially transmitting absorber layers which have essentially the same material and thickness, and a dielectric spacer layer located between the first and second absorber layers.
- Color shifting platelets for use in paints are disclosed in U.S. Pat. No. 5,571,624 to Phillips et al., which is incorporated by reference herein. These platelets are formed from a symmetrical multilayer thin film structure in which a first semi-opaque layer such as chromium is formed on a substrate, with a first dielectric layer formed on the first semi-opaque layer. An opaque reflecting metal layer such as aluminum is formed on the first dielectric layer, followed by a second dielectric layer of the same material and thickness as the first dielectric layer. A second semi-opaque layer of the same material and thickness as the first semi-opaque layer is formed on the second dielectric layer.
- a first semi-opaque layer such as chromium
- An opaque reflecting metal layer such as aluminum is formed on the first dielectric layer, followed by a second dielectric layer of the same material and thickness as the first dielectric layer.
- U.S. Pat. No. 4,838,648 to Phillips et al. discloses a thin film magnetic color shifting structure wherein the magnetic material can be used as the reflector or absorber layer.
- One disclosed magnetic material is a cobalt nickel alloy.
- Phillips '648 discloses flakes and foils with the following structures:
- Patterned surfaces have been provided by exposing magnetic flakes to a magnetic force to effect a physical alteration in the structure of the pigment.
- U.S. Pat. No. 6,103,361 to Batzar et al. uses pigments made of magnetizable materials to decorate cookware.
- Batzar is directed toward controlling the orientation of stainless steel flakes in a fluoropolymer release coating to make patterns where at least some of the flakes are longer than the coating thickness.
- the patterned substrate is formed by applying magnetic force through the edges of a magnetizable die positioned under a coated base to alter the orientation of the flakes within the coating, thereby inducing an imaging effect or pattern.
- Batzar does not discuss the use of optical thin film stacks or platelets employing a magnetic layer.
- the stainless steel flakes used in Batzar are suitable for decorating cookware, they are poorly reflecting.
- U.S. Pat. No. 2,570,856 to Pratt et al (hereinafter “Pratt”) is directed to metallic flake pigments which are based on ferromagnetic metal platelets. Like Batzar, however, Pratt uses poorly reflecting metals and does not teach the use of thin film optical stacks.
- U.S. Pat. Nos. 5,364,689 and 5,630,877 to Kashiwagi et al. disclose methods and apparatus for creating magnetically formed painted patterns.
- the Kashiwagi patents teach use of a magnetic paint layer, which includes nonspherical magnetic particles in a paint medium. A magnetic field with magnetic field lines in the shape of the desired pattern is applied to the paint layer. The final pattern is created by the different magnetic particle orientations in the hardened paint.
- Schmid uses aluminum platelets and then coats these platelets with magnetic materials.
- the overlying magnetic material downgrades the reflective properties of the pigment because aluminum is the second brightest metal (after silver), meaning any magnetic material is less reflective.
- Schmid starts with aluminum platelets generated from ballmilling, a method which is limited in terms of the layer smoothness that can be achieved.
- Patent Publication EP 710508A1 to Richter et al. discloses methods for providing three dimensional effects by drawing with magnetic tips.
- Richter describes three dimensional effects achieved by aligning magnetically active pigments in a spatially-varying magnetic field.
- Richter uses standard pigments (barium ferrite, strontium ferrite, samarium/cobalt, Al/Co/Ni alloys, and metal oxides made by sintering and quick quenching, none of which are composed of optical thin film stacks. Rather, the particles are of the hard magnetic type.
- Richter uses electromagnetic pole pieces either on top of the coating or on both sides of the coating. However, Richter uses a moving system and requires “drawing” of the image. This “drawing” takes time and is not conducive to production type processes.
- Stepgroever U.S. Pat. No. 3,791,864 to Steingroever (hereinafter “Steingroever”) describes a method for patterning magnetic particles by orienting them with a magnetic pattern generated in an underlying prime coating that has previously been patterned by a magnetic field.
- the prime coat contains magnetic particles of the type MO ⁇ 6Fe 2 O 3 where M can be one or more of the elements Ba, Sr, Co, or Pb.
- M can be one or more of the elements Ba, Sr, Co, or Pb.
- a pigment vehicle with magnetic particles suspended therein is then applied.
- the magnetic particles suspended therein are finally oriented by the magnetic force from the magnetic pattern in the primer, creating the final pattern.
- Steingroever suffers from a diffuse magnetic image in the prime coat, which in turn passes a diffuse image to the topcoat.
- This reduction in resolution is because high magnetic fields are limited in the resolution they can create.
- This limitation is due to high magnetic field lines surrounding the intended magnetic image, thereby affecting untargeted magnetic particles in the prime coat and blurring the image.
- pigment flakes and foils which have magnetic properties.
- the pigment flakes can have a symmetrical stacked coating structure on opposing sides of a magnetic core layer, can have an asymmetrical coating structure with all of the layers on one side of the magnetic layer, or can be formed with one or more encapsulating coatings around a magnetic core.
- the coating structure of the flakes and foils includes at least one magnetic layer and optionally one or more of a reflector layer, dielectric layer, and absorber layer. In color shifting embodiments of the invention, the coating structure includes the dielectric layer overlying the magnetic and reflector layers, and the absorber layer overlying the dielectric layer.
- Non color shifting embodiments of the invention include a magnetic layer between two reflector layers or encapsulated by a reflector layer, a magnetic layer between two dielectric layers or encapsulated by a dielectric layer, a dielectric layer between two magnetic layers or encapsulated by a magnetic layer, and a magnetic layer encapsulated by a colorant layer.
- the color shifting embodiments exhibit a discrete color shift so as to have a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.
- the pigment flakes can be interspersed into liquid media such as paints or inks to produce colorant compositions for subsequent application to objects or papers.
- the foils can be laminated to various objects or can be formed on a carrier substrate.
- FIG. 1 is a schematic representation of the coating structure of a magnetic flake according to one embodiment of the invention.
- FIG. 2 is a schematic representation of the coating structure of a magnetic flake according to another embodiment of the invention.
- FIG. 3 is a schematic representation of the coating structure of a magnetic flake according to an alternative embodiment of the invention.
- FIG. 4 is a schematic representation of the coating structure of a magnetic flake according to another embodiment of the invention.
- FIG. 5 is a schematic representation of the coating structure of a magnetic flake according to a further embodiment of the invention.
- FIG. 6 is a schematic representation of the coating structure of a magnetic flake according to a further embodiment of the invention.
- FIG. 7 is a schematic representation of the coating structure of a magnetic flake according to an alternative embodiment of the invention.
- FIG. 8 is a schematic representation of the coating structure of a magnetic flake according to a further embodiment of the invention.
- FIG. 9 is a schematic representation of the coating structure of a magnetic flake according to yet a further embodiment of the invention.
- FIG. 10 is a schematic representation of the coating structure of a magnetic flake according to another alternative embodiment of the invention.
- FIG. 11 is a schematic representation of the coating structure of a magnetic flake according to another embodiment of the invention.
- FIG. 12 is a schematic representation of the coating structure of a magnetic flake according to a further embodiment of the invention.
- FIG. 13 is a schematic representation of the coating structure of a magnetic foil according to one embodiment of the invention.
- FIG. 14 is a schematic representation of the coating structure of a magnetic foil according to another embodiment of the invention.
- FIG. 15 is a schematic representation of the coating structure of a magnetic foil according to a further embodiment of the invention.
- FIG. 16 is a schematic representation of the coating structure of an optical article according to an additional embodiment of the invention.
- FIG. 17 is a schematic representation of the coating structure of an optical article according to a further embodiment of the invention.
- the present invention relates to multilayer pigment flakes and foils which have magnetic layers, and pigment compositions which incorporate the magnetic flakes.
- the flakes and foils can be used both to create security features which are not visually perceptible, and to create three dimensional-like images for security devices or to add decorative features to a product.
- the nonvisual security features are provided by burying the magnetic layer between other layers within a flake or foil so that only the overlying layers are exposed.
- the three dimensional-like effects can be provided by exposing the flake or foil to an external magnetic force, thereby orienting the plane of some of the pigments normal to the surface of the coating.
- the un-oriented pigments lie with their planar surface parallel to the surface of the coating.
- the three dimensional-like effect is due to the alignment of the particles such that the aspect ratio is oriented with the magnetic field, i.e. the longest part of the pigment aligns itself along the magnetic field lines. In such case, the face of the pigment is turned away from the observer to various extents depending on the magnitude of the magnetic force. In the limit or maximum orientation, the coating appears black in color.
- the presently disclosed flakes are not composed only of magnetizable materials, but include both magnetizable and nonmagnetizable materials.
- the invention encompasses pigment flakes wherein a magnetic layer is buried within one or more reflector layers.
- the pigment flakes comprise a magnetic core surrounded by dielectric layers.
- the pigment flakes include a dielectric core surrounded by magnetic layers.
- the present invention presents a significant improvement over the prior art by substantially achieving higher chroma and brightness.
- the present invention accomplishes two objectives: 1) the reflectivity of the reflector layer is maintained; and 2) color shifting pigments without the inner core of magnetic material cannot be distinguished by an observer from such pigment with the core of magnetic material.
- two coated objects viewed side by side, one with and one without the magnetic material in the coating would look the same to the observer.
- the magnetic color shifting pigment provides a covert security feature in addition to the color shifting effect.
- a magnetic covert signature in the pigment could be read by a Faraday rotator detector, for example.
- the pigment flakes and foils have substantial shifts in chroma and hue with changes in angle of incident light or viewing angle of an observer.
- Such an optical effect known as goniochromaticity or “color shift,” allows a perceived color to vary with the angle of illumination or observation.
- Such pigment flakes and foils exhibit a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.
- the pigment flakes can be interspersed into liquid media such as paints or inks to produce various color shifting colorant compositions for subsequent application to objects or papers.
- the foils can be laminated to various objects or can be formed on a carrier substrate.
- the color shifting pigment flakes can have a symmetrical stacked coating structure on opposing sides of a magnetic core layer, can have an asymmetrical coating structure with a majority of the layers on one side of the magnetic layer, or can be formed with one or more encapsulating coatings which surround a magnetic core.
- the coating structure of the flakes and foils generally includes a magnetic core, which includes a magnetic layer and other optional layers, a dielectric layer overlying the magnetic core, and an absorber layer overlying the dielectric layer.
- the color shifting flakes and foils of the invention can be formed using conventional thin film deposition techniques, which are well known in the art of forming thin coating structures.
- thin film deposition techniques include physical vapor deposition (PVD), chemical vapor deposition (CVD), plasma enhanced (PE) variations thereof such as PECVD or downstream PECVD, sputtering, electrolysis deposition, and other like deposition methods that lead to the formation of discrete and uniform thin film layers.
- the color shifting pigment flakes of the invention can be formed by various fabrication methods.
- the pigment flakes can be formed by a web coating process in which various layers are sequentially deposited on a web material by conventional deposition techniques to form a thin film structure, which is subsequently fractured and removed from the web, such as by use of a solvent, to form a plurality of thin film flakes.
- one or more thin film layers including at least the magnetic layer is deposited on a web to form a film, which is subsequently fractured and removed from the web to form a plurality of pigment preflakes.
- the preflakes can be fragmented further by grinding if desired.
- the preflakes are then coated with the remaining layer or layers in a sequential encapsulation process to form a plurality of pigment flakes.
- magnetic particles can be coated in a sequential encapsulation process to form a plurality of pigment flakes.
- each respective encapsulating layer is a continuous layer composed of one material and having substantially the same thickness around the flake structure.
- the encapsulating layer can be a colored dielectric material or an organic layer with added colorant.
- FIG. 1 depicts a reflective magnetic flake (“RMF”) 20 according to one embodiment of the invention.
- the RMF 20 is a three layer design having a generally symmetrical thin film structure with a central magnetic layer 22 and at least one reflector layer on either or both of the opposing major surfaces of the central magnetic layer.
- RMF 20 comprises a magnetic layer interdisposed between a reflector layer 24 and an opposing reflector layer 26 .
- the RMF 20 can be used as a pigment flake or can be used as a core section with additional layers applied thereover such as in a color shifting pigment. In the case of color shifting pigments, maintaining the high reflective layer is extremely important to preserve high brightness and chroma. Each of these layers in the coating structure of RMF 20 is discussed below in greater detail.
- the magnetic layer 22 can be formed of any magnetic material such as nickel, cobalt, iron, gadolinium, terbium, dysprosium, erbium, and their alloys or oxides.
- a cobalt nickel alloy can be employed, with the cobalt and nickel having a ratio by weight of about 80% and about 20%, respectively. This ratio for each of these metals in the cobalt nickel alloy can be varied by plus or minus about 10% and still achieve the desired results.
- cobalt can be present in the alloy in an amount from about 70% to about 90% by weight
- nickel can be present in the alloy in an amount from about 10% to about 30% by weight.
- alloys include Fe/Si, Fe/Ni, FeCo, Fe/Ni/Mo, and combinations thereof.
- Hard magnetics of the type SmCo 5 , NdCo 5 , Sm 2 Co 17 , Nd 2 Fe 14 B, Sr 6 Fe 2 O 3 , TbFe 2 , Al—Ni—Co, and combinations thereof, can also be used as well as spinel ferrites of the type Fe 3 O 4 , NiFe 2 O 4 , MnFe 2 O 4 , CoFe 2 O 4 , or garnets of the type YIG or GdIG, and combinations thereof.
- the magnetic material may be selected for its reflecting or absorbing properties as well as its magnetic properties.
- the magnetic material When utilized to function as a reflector, the magnetic material is deposited to a thickness so that it is substantially opaque. When utilized as an absorber, the magnetic material is deposited to a thickness so that it is not substantially opaque. A typical thickness for the magnetic material when utilized as an absorber is from about 2 nm to about 20 nm.
- the “soft” magnets are preferred in some embodiments of the invention.
- hard magnets also called permanent magnets
- a ferromagnetic material is any material that has a permeability substantially greater than 1 and that exhibits magnetic hysteresis properties.
- the magnetic materials used to form magnetic layers in the flakes and foils of the invention have a coercivity of less than about 2000 Oe, more preferably less than about 300 Oe.
- Coercivity refers to the ability of a material to be demagnetized by an external magnetic field. The higher the value of coercivity, the higher the magnetic field required to de-magnetize the material after the field is removed.
- the magnetic layers used are preferably “soft” magnetic materials (easily demagnetized), as opposed to “hard” magnetic materials (difficult to demagnetize) which have higher coercivities.
- the coercivities of the foils, pigments or colorants of the magnetic color shifting designs according to the invention are preferably in a range of about 50 Oe to about 300 Oe. These coercivities are lower than in standard recording materials.
- preferred embodiments of the invention which use soft magnets in magnetic color shifting pigments and magnetic non color shifting pigments are an improvement over conventional technologies.
- the use of soft magnetic materials in pigment flakes allows for easier dispersion of the flakes without clumping.
- the magnetic layer 22 can be formed to have a suitable physical thickness of from about 200 angstroms ( ⁇ ) to about 10,000 ⁇ , and preferably from about 500 ⁇ to about 1,500 ⁇ .
- ⁇ angstroms
- the optimal magnetic thickness will vary depending on the particular magnetic material used and the purpose for its use. For example, a magnetic absorber layer will be thinner than a magnetic reflector layer based on the optical requirements for such layers, while a covert magnetic layer will have a thickness based solely on its magnetic properties.
- the reflector layers 24 and 26 can be composed of various reflective materials. Presently preferred materials are one or more metals, one or more metal alloys, or combinations thereof, because of their high reflectivity and ease of use, although non-metallic reflective materials could also be used.
- suitable metallic materials for the reflector layers include aluminum, silver, copper, gold, platinum, tin, titanium, palladium, nickel, cobalt, rhodium, niobium, chromium, and combinations or alloys thereof. These can be selected based on the f desired.
- the reflector layers 24 , 26 can be formed to have a suitable physical thickness of from about 400 ⁇ to about 2,000 ⁇ , and preferably from about 500 ⁇ to about 1,000 ⁇ .
- opposing dielectric layers may optionally be added to overlie reflector layers 24 and 26 . These opposing dielectric layers add durability, rigidity, and corrosion resistance to RMF 20 .
- an encapsulating dielectric layer may be formed to substantially surround reflector layers 24 , 26 and magnetic layer 22 .
- the dielectric layer(s) may be optionally clear, or may be selectively absorbing so as to contribute to the color effect of the pigment flake. Examples of suitable dielectric materials for the dielectric layers are described hereafter.
- FIG. 2 depicts a magnetic color shifting pigment flake 40 based upon a RMF according to one embodiment of the invention.
- the flake 40 is a generally symmetrical multilayer thin film structure having layers on opposing sides of a RMF 42 .
- first and second dielectric layers 44 and 46 are disposed respectively on opposing sides of RMF 42
- first and second absorber layers 48 and 50 are disposed respectively on each of dielectric layers 44 and 46 .
- the RMF is as discussed hereinabove for FIG. 1 while the dielectric and absorber layers are discussed below in greater detail.
- the dielectric layers 44 and 46 act as spacers in the thin film stack structure of flake 40 . These layers are formed to have an effective optical thickness for imparting interference color and desired color shifting properties.
- the dielectric layers may be optionally clear, or may be selectively absorbing so as to contribute to the color effect of a pigment.
- the optical thickness is a well known optical parameter defined as the product ⁇ d, where ⁇ is the refractive index of the layer and d is the physical thickness of the layer.
- the optical thickness of a layer is expressed in terms of a quarter wave optical thickness (QWOT) that is equal to 4 ⁇ d/ ⁇ , where ⁇ is the wavelength at which a QWOT condition occurs.
- QWOT quarter wave optical thickness
- the optical thickness of dielectric layers can range from about 2 QWOT at a design wavelength of about 400 nm to about 9 QWOT at a design wavelength of about 700 nm, and preferably 2-6 QWOT at 400-700 nm, depending upon the color shift desired.
- the dielectric layers typically have a physical thickness of about 100 nm to about 800 nm, depending on the color characteristics desired.
- Suitable materials for dielectric layers 44 and 46 include those having a “high”index of refraction, defined herein as greater than about 1.65, as well as those have a “low” index of refraction, which is defined herein as about 1.65 or less.
- Each of the dielectric layers can be formed of a single material or with a variety of material combinations and configurations.
- the dielectric layers can be formed of only a low index material or only a high index material, a mixture or multiple sublayers of two or more low index materials, a mixture or multiple sublayers of two or more high index materials, or a mixture or multiple sublayers of low index and high index materials.
- the dielectric layers can be formed partially or entirely of high/low dielectric optical stacks, which are discussed in further detail below.
- the remaining portion of the dielectric layer can be formed with a single material or various material combinations and configurations as described above.
- suitable high refractive index materials for the dielectric layer include zinc sulfide (ZnS), zinc oxide (ZnO), zirconium oxide (ZrO 2 ), titanium dioxide (TiO 2 ), diamond-like carbon, indium oxide (In 2 O 3 ), indium-tin-oxide (ITO), tantalum pentoxide (Ta2O5), ceric oxide (CeO 2 ), yttrium oxide (Y 2 O 3 ), europium oxide (Eu 2 O 3 ), iron oxides such as (II)diiron(III) oxide (Fe 3 O 4 ) and ferric oxide (Fe 2 O 3 ), hafnium nitride (HfN), hafnium carbide (HfC), hafnium oxide (HfO 2 ), lanthanum oxide (La 2 O 3 ), magnesium oxide (MgO), neodymium oxide (Nd 2 O 3 ), praseodymium oxide (Pr 6 O 11
- Suitable low refractive index materials for the dielectric layer include silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), metal fluorides such as magnesium fluoride (MgF 2 ), aluminum fluoride (AlF 3 ), cerium fluoride (CeF 3 ), lanthanum fluoride (LaF 3 ), sodium aluminum fluorides (e.g., Na 3 AlF 6 or Na 5 Al 3 Fl 4 ), neodymium fluoride (NdF 3 ), samarium fluoride (SmF 3 ), barium fluoride (BaF 2 ), calcium fluoride (CaF 2 ), lithium fluoride (LiF), combinations thereof, or any other low index material having an index of refraction of about 1.65 or less.
- metal fluorides such as magnesium fluoride (MgF 2 ), aluminum fluoride (AlF 3 ), cerium fluoride (CeF 3 ), lanthanum fluoride (LaF 3 ), sodium aluminum
- organic monomers and polymers can be utilized as low index materials, including dienes or alkenes such as acrylates (e.g., methacrylate), perfluoroalkenes, polytetrafluoroethylene (Teflon), fluorinated ethylene propylene (FEP), combinations thereof, and the like.
- dienes or alkenes such as acrylates (e.g., methacrylate), perfluoroalkenes, polytetrafluoroethylene (Teflon), fluorinated ethylene propylene (FEP), combinations thereof, and the like.
- dielectric materials are typically present in non-stoichiometric forms, often depending upon the specific method used to deposit the dielectric material as a coating layer, and that the above-listed compound names indicate the approximate stoichiometry.
- silicon monoxide and silicon dioxide have nominal 1:1 and 1:2 silicon:oxygen ratios, respectively, but the actual silicon:oxygen ratio of a particular dielectric coating layer varies somewhat from these nominal values.
- Such non-stoichiometric dielectric materials are also within the scope of the present invention.
- the dielectric layers can be formed of high/low dielectric optical stacks, which have alternating layers of low index (L) and high index (H) materials.
- L low index
- H high index
- the color shift at angle will depend on the combined refractive index of the layers in the stack.
- LH indicates discrete layers of a low index material and a high index material.
- the high/low dielectric stacks are formed with a gradient index of refraction.
- the graded index is produced by a gradual variance in the refractive index, such as low-to-high index or high-to-low index, of adjacent layers.
- the graded index of the layers can be produced by changing gases during deposition or co-depositing two materials (e.g., L and H) in differing proportions.
- Various high/low optical stacks can be used to enhance color shifting performance, provide antireflective properties to the dielectric layer, and change the possible color space of the pigments of the invention.
- the dielectric layers can each be composed of the same material or a different material, and can have the same or different optical or physical thickness for each layer. It will be appreciated that when the dielectric layers are composed of different materials or have different thicknesses, the flakes exhibit different colors on each side thereof and the resulting mix of flakes in a pigment or paint mixture would show a new color which is the combination of the two colors. The resulting color would be based on additive color theory of the two colors coming from the two sides of the flakes. In a multiplicity of flakes, the resulting color would be the additive sum of the two colors resulting from the random distribution of flakes having different sides oriented toward the observer.
- the absorber layers 48 , 50 of flake 40 can be composed of any absorber material having the desired absorption properties, including materials that are uniformly absorbing or non-uniformly absorbing in the visible part of the electromagnetic spectrum. Thus, selective absorbing materials or nonselective absorbing materials can be used, depending on the color characteristics desired.
- the absorber layers can be formed of nonselective absorbing metallic materials deposited to a thickness at which the absorber layer is at least partially absorbing, or semi-opaque.
- Nonlimiting examples of suitable absorber materials include metallic absorbers such as chromium, aluminum, nickel, silver, copper, palladium, platinum, titanium, vanadium, cobalt, iron, tin, tungsten, molybdenum, rhodium, and niobium, as well as their corresponding oxides, sulfides, and carbides.
- Other suitable absorber materials include carbon, graphite, silicon, germanium, cermet, ferric oxide or other metal oxides, metals mixed in a dielectric matrix, and other substances that are capable of acting as a uniform or selective absorber in the visible spectrum.
- Various combinations, mixtures, compounds, or alloys of the above absorber materials may be used to form the absorber layers of flake 40 .
- suitable alloys of the above absorber materials include Inconel (Ni—Cr—Fe), stainless steels, Hastalloys (e.g., Ni—Mo—Fe; Ni—Mo—Fe—Cr; Ni—Si—Cu) and titanium-based alloys, such as titanium mixed with carbon (Ti/C), titanium mixed with tungsten (Ti/W), titanium mixed with niobium (Ti/Nb), and titanium mixed with silicon (Ti/Si), and combinations thereof.
- the absorber layers can also be composed of an absorbing metal oxide, metal sulfide, metal carbide, or combinations thereof.
- one preferred absorbing sulfide material is silver sulfide.
- suitable compounds for the absorber layers include titanium-based compounds such as titanium nitride (TiN), titanium oxynitride (TiN x O y ), titanium carbide (TiC), titanium nitride carbide (TiN x C z ), titanium oxynitride carbide (TiN x O y C z ), titanium silicide (TiSi 2 ), titanium boride (TiB 2 ), and combinations thereof.
- titanium-based compounds such as titanium nitride (TiN), titanium oxynitride (TiN x O y ), titanium carbide (TiC), titanium nitride carbide (TiN x C z ), titanium oxynitride carbide (TiN x O y C z ), titanium silicide (TiSi 2 ), titanium boride (TiB 2 ), and combinations thereof.
- the absorber layers can be composed of a titanium-based alloy disposed in a matrix of Ti, or can be composed of Ti disposed in a matrix of a titanium-based alloy.
- the absorber layer also could be formed of a magnetic material, such as a cobalt nickel alloy. This simplifies the manufacture of the magnetic color shifting device or structure by reducing the number of materials required.
- the absorber layers are formed to have a physical thickness in the range from about 30 ⁇ to about 500 ⁇ , and preferably about 50 ⁇ to about 150 ⁇ , depending upon the optical constants of the absorber layer material and the desired peak shift.
- the absorber layers can each be composed of the same material or a different material, and can have the same or different physical thickness for each layer.
- an asymmetrical color shifting flake can be provided which includes a thin film stack structure with the same layers as on one side of RMF 42 as shown in FIG. 2. Accordingly, the asymmetrical color shifting flake includes RMF 42 , dielectric layer 44 overlying RMF 42 , and absorber layer 48 overlying dielectric layer 44 . Each of these layers can be composed of the same materials and have the same thicknesses as described above for the corresponding layers of flake 40 .
- asymmetrical color shifting flakes can be formed by a web coating process such as described above in which the various layers are sequentially deposited on a web material to form a thin film structure, which is subsequently fractured and removed from the web to form a plurality of flakes.
- flake 40 can be formed without the absorber layers.
- opposing dielectric layers 44 and 46 are formed of high/low (H/L) dielectric optical stacks such as described previously.
- QW quarterwave
- FIG. 3 depicts a reflective magnetic flake or particle (“RMP”) 60 according to another embodiment of the invention.
- the RMP 60 is a two layer design with a reflector layer 62 substantially surrounding and encapsulating a core magnetic layer 64 . By inserting the magnetic layer within the reflector layer, the optical properties of the reflector layer are not downgraded and the reflector layer remains highly reflective.
- the RMP 60 can be used as a pigment particle or can be used as a core section with additional layers applied thereover.
- the magnetic layer and reflector layer can be composed of the same materials discussed with respect to RMF 20 .
- a dielectric layer may optionally be added to overlie reflector layer 62 , to add durability, rigidity, and corrosion resistance to RMP 60 .
- the dielectric layer may be optionally clear, or may be selectively absorbing so as to contribute to the color effect of the pigment flake.
- FIG. 4 depicts alternative coating structures (with phantom lines) for a magnetic color shifting pigment flake 80 in the form of an encapsulate based upon either the RMF or the RMP according to other embodiments of the invention.
- the flake 80 has a magnetic core section 82 , which is either a RMF or a RMP, which can be overcoated by an encapsulating dielectric layer 84 substantially surrounding magnetic core section 82 .
- An absorber layer 86 which overcoats dielectric layer 84 , provides an outer encapsulation of flake 80 .
- the hemispherical dashed lines on one side of flake 80 in FIG. 4 indicate that dielectric layer 84 and absorber layer 86 can be formed as contiguous layers around magnetic core section 82 .
- the magnetic core section 82 and dielectric layer can be in the form of a thin film core flake stack, in which opposing dielectric layers 84 a and 84 b are preformed on the top and bottom surfaces but not on at least one side surface of magnetic core section 82 (RMF), with absorber layer 86 encapsulating the thin film stack.
- An encapsulation process can also be used to form additional layers on flake 80 such as a capping layer (not shown).
- the pigment flake 80 exhibits a discrete color shift such that the pigment flake has a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.
- flake 80 can be formed without the absorber layer.
- dielectric layer 84 is formed of contiguous high/low (H/L) dielectric optical coatings similar to the dielectric optical stacks described previously.
- FIG. 5 depicts another alternative coating structure for a color shifting pigment flake 100 according to the present invention.
- the flake 100 includes a magnetic core section 82 and a single dielectric layer 84 , which extends over top and bottom surfaces of magnetic core section 82 to form a dielectric-coated preflake 86 .
- the core section 82 can be an RMF, RMP, or a magnetic layer.
- the dielectric-coated preflake 86 has two side surfaces 88 and 90 . Although side surface 90 is homogeneous and formed only of the dielectric material of dielectric layer 84 , side surface 88 has distinct surface regions 88 a , 88 b , 88 c of dielectric, magnetic core section, and dielectric, respectively.
- the dielectric-coated preflake 86 is further coated on all sides with an absorber layer 92 .
- the absorber layer 92 is in contact with dielectric layer 84 and magnetic core section 82 at side surface 88 .
- the structure of pigment flake 100 typically occurs because of a preflake coating process similar to the one disclosed in U.S. application Ser. No. 09/512,116 described previously.
- the preflakes can be a dielectric-coated flake, in which a dielectric coating completely encapsulates an RMF or RMP (see FIG. 4), or a magnetic layer (see FIG. 10).
- the preflakes are broken into sized preflakes using any conventional fragmentation process, such as by grinding.
- the sized preflakes will include some sized preflakes having top and bottom dielectric layers with no dielectric coating on the side surfaces of the preflake, such as shown for the embodiment of flake 40 in FIG. 2 in which RMF 42 is coated with top and bottom dielectric layers 44 and 46 .
- sized preflakes will have a single dielectric layer extending over both top and bottom surfaces of the magnetic core flake section, leaving one side surface of the magnetic core flake section exposed, such as shown for dielectric-coated preflake 86 in FIG. 5. Because of the fragmentation process, substantially all of the sized preflakes have at least a portion of a side surface exposed. The sized preflakes are then coated on all sides with an absorber layer, such as shown in the flakes of FIGS. 4 and 5.
- FIG. 6 depicts a composite magnetic flake (“CMF”) 120 which comprises a central dielectric support layer 122 with first and second magnetic layers 124 , 126 on opposing major surfaces thereof.
- CMF composite magnetic flake
- the CMF 120 can be used as a pigment flake by itself or can be used as a magnetic core section with additional layers applied thereover.
- the magnetic layers 124 , 126 can be formed of any of the magnetic materials described previously.
- the dielectric material used for support layer 122 is preferably inorganic, since inorganic dielectric materials have been found to have good characteristics of brittleness and rigidity.
- Various dielectric materials that can be utilized include metal fluorides, metal oxides, metal sulfides, metal nitrides, metal carbides, combinations thereof, and the like.
- the dielectric materials may be in either a crystalline, amorphous, or semicrystalline state. These materials are readily available and easily applied by physical or chemical vapor deposition processes.
- suitable dielectric materials include magnesium fluoride, silicon monoxide, silicon dioxide, aluminum oxide, titanium dioxide, tungsten oxide, aluminum nitride, boron nitride, boron carbide, tungsten carbide, titanium carbide, titanium nitride, silicon nitride, zinc sulfide, glass flakes, diamond-like carbon, combinations thereof, and the like.
- support layer 122 may be composed of a preformed dielectric or ceramic preflake material having a high aspect ratio such as a natural platelet mineral (e.g., mica peroskovite or talc), or synthetic platelets formed from glass, alumina, silicon dioxide, carbon, micaeous iron oxide, coated mica, boron nitride, boron carbide, graphite, bismuth oxychloride, various combinations thereof, and the like.
- a natural platelet mineral e.g., mica peroskovite or talc
- synthetic platelets formed from glass, alumina, silicon dioxide, carbon, micaeous iron oxide, coated mica, boron nitride, boron carbide, graphite, bismuth oxychloride, various combinations thereof, and the like.
- various semiconductive and conductive materials having a sufficient ratio of tensile to compressive strength can function as a support layer.
- examples of such materials include silicon, metal siicides, semiconductive compounds formed from any of the group III, IV, or V elements, metals having a body centered cubic crystal structure, cermet compositions or compounds, semiconductive glasses, various combinations thereof, and the like. It will be appreciated from the teachings herein, however, that any support material providing the functionality described herein and capable of acting as a rigid layer with glass-like qualities would be an acceptable substitute for one of these materials.
- the thickness of support layer 122 can be in a range from about 10 nm to about 1,000 nm, preferably from about 50 nm to about 200 nm, although these ranges should not be taken as restrictive.
- FIG. 7 depicts a composite magnetic particle (“CMP”) 140 according to another embodiment of the invention.
- the CMP 140 is a two layer design with a magnetic layer 142 substantially surrounding and encapsulating a central support layer 144 such as a dielectric layer. By inserting the support layer within the magnetic layer, CMP 140 is significantly stabilized and rigid. The support layer adds rigidity and durability to the pigment flake.
- the magnetic layer 142 can be formed of any of the magnetic materials described previously.
- the support layer 144 can be formed of the same materials described hereinabove for support layer 122 of CMF 120 .
- the CMP 140 can be used as a pigment particle by itself or can be used as a magnetic core section with additional layers applied thereover. For example, an outer dielectric layer may be added to overlie and encapsulate magnetic layer 142 . This outer dielectric layer adds durability, rigidity, and corrosion resistance to CMP 140 .
- FIG. 8 depicts a coating structure for a color shifting pigment flake 160 in the form of an encapsulate.
- the flake 160 has a thin core layer 162 , which can be formed of a dielectric or other material as taught hereinabove for support layer 122 .
- the core layer 162 is overcoated on all sides with a magnetic layer 164 , which can be composed of the same materials as described above for magnetic layer 22 of RMF 20 .
- a reflector layer 168 can be applied over magnetic layer 164 .
- Suitable materials for reflector layer 168 include those materials described for reflector layer 24 of RMF 20 .
- the reflector layer effectively provides the reflective function of flake 160 , shielding magnetic layer 164 from being optically present.
- the core layer 162 and magnetic layer 164 can be provided as a CMP 166 which is overcoated with the other layers.
- CMP 166 can be replaced with a CMF such as shown in FIG. 6.
- An encapsulating dielectric layer 170 substantially surrounds reflector layer 168 and magnetic layer 164 .
- An absorber layer 172 which overlays dielectric layer 170 , provides an outer encapsulation of flake 160 .
- Suitable preferred methods for forming the dielectric layer include vacuum vapor deposition, sol-gel hydrolysis, CVD in a fluidized bed, downstream plasma onto vibrating trays filled with particles, and electrochemical deposition.
- a suitable SiO 2 sol-gel process is described in U.S. Pat. No. 5,858,078 to Andes et al., the disclosure of which is incorporated by reference herein.
- Other examples of suitable sol-gel coating techniques useful in the present invention are disclosed in U.S. Pat. No.
- Suitable preferred methods for forming the absorber layers include vacuum vapor deposition, and sputtering onto a mechanically vibrating bed of particles, as disclosed in commonly assigned copending patent application Ser. No. 09/389,962, filed Sep. 3, 1999, entitled “Methods and Apparatus for Producing Enhanced Interference Pigments,” which is incorporated by reference herein in its entirety.
- the absorber coating may be deposited by decomposition through pyrolysis of metal-organo compounds or related CVD processes which may be carried out in a fluidized bed as described in U.S. Pat. Nos. 5,364,467 and 5,763,086 to Schmid et al., the disclosures of which are incorporated by reference herein. If no further grinding is carried out, these methods result in an encapsulated core flake section with dielectric and absorber materials therearound.
- Various combinations of the above coating processes may be utilized during manufacture of pigment flakes with multiple encapsulating coatings.
- the absorber coating powdered flakes or other coated preflakes are placed on a square-shaped vibrating conveyor coater in a vacuum coating chamber as disclosed in U.S. application Ser. No. 09/389,962, discussed above.
- the vibrating conveyor coater includes conveyor trays which are configured in an overlapping inclined arrangement so that the powdered flakes travel along a circulating path within the vacuum chamber. While the flakes circulate along this path they are effectively mixed by constant agitation so that exposure to the vaporized absorber coating material is uniform. Efficient mixing also occurs at the end of each conveyor tray as the flakes drop in a waterfall off of one tray and onto the next tray.
- the absorber can be sequentially coated on the flakes as they repeatably move under a coating material source.
- FIG. 9 depicts a dielectric coated magnetic flake (“DMF”) 180 according to a further embodiment of the invention.
- the DMF 180 is a three layer design having a generally symmetrical thin film structure with a central magnetic layer and at least one dielectric layer on either or both of the opposing major surfaces of the central magnetic layer.
- DMF 180 includes a magnetic layer 182 sandwiched in between a dielectric layer 184 and an opposing dielectric layer 186 . By inserting the magnetic layer between the dielectric layers, the DMF has increased rigidity and durability.
- FIG. 10 depicts a dielectric coated magnetic particle (“DMP”) 200 according to another embodiment of the invention.
- the DMP 200 is a two layer design with a dielectric layer 202 substantially surrounding and encapsulating a central magnetic layer 204 .
- each of the layers in the coating structures of DMF 180 and DMP 200 can be formed of the same materials and thickness as corresponding layers described in previous embodiments.
- the dielectric layer in DMF 180 and DMP 200 can be formed of the same materials and in the same thickness ranges as taught hereinabove for dielectric layer 44 of flake 40
- the magnetic layers in DMF 180 and DMP 200 can be formed of the same materials and in the same thickness ranges as taught hereinabove for magnetic layer 22 of flake 20 .
- the DMF 180 and DMP 200 can each be used as a pigment flake or particle, or can be used as a magnetic core section with additional layers applied thereover. FIG.
- the flake 220 is a three-layer design having a generally symmetrical multilayer thin film structure on opposing sides of a magnetic core section 222 , which can be a DMF or a DMP.
- first and second absorber layers 224 a and 224 b are formed on opposing major surfaces of magnetic core section 222 .
- These layers of flake 220 can be formed by a web coating and flake removal process as described previously.
- FIG. 11 further depicts an alternative coating structure (with phantom lines) for color shifting flake 220 , in which the absorber layer is coated around magnetic core section 222 in an encapsulation process. Accordingly, absorber layers 224 a and 224 b are formed as part of a continuous coating layer 224 substantially surrounding the flake structure thereunder.
- pigment flake 220 may be embodied either as a multilayer thin film stack flake or a multilayer thin film encapsulated particle. Suitable materials and thicknesses for the absorber, dielectric, and magnetic layers of flake 220 are the same as taught hereinabove.
- Some flakes of the invention can be characterized as multilayer thin film interference structures in which layers lie in parallel planes such that the flakes have first and second parallel planar outer surfaces and an edge thickness perpendicular to the first and second parallel planar outer surfaces.
- Such flakes are produced to have an aspect ratio of at least about 2:1, and preferably about 5-15:1 with a narrow particle size distribution.
- the aspect ratio of the flakes is ascertained by taking the ratio of the longest planar dimension of the first and second outer surfaces to the edge thickness dimension of the flakes.
- One presently preferred method of fabricating a plurality of pigment flakes, each of which having the multilayer thin film coating structure of flake 40 shown in FIG. 2, is based on conventional web coating techniques used to make optical thin films.
- flake 40 is described hereinbelow, the other flake structures taught herein can also be fabricated with a procedure similar to the one described hereinbelow.
- a first absorber layer is deposited on a web of flexible material such as polyethylene terephthalate (PET) which has an optional release layer thereon.
- PET polyethylene terephthalate
- the absorber layer can be formed by a conventional deposition process such as PVD, CVD, PECVD, sputtering, or the like.
- the above mentioned deposition methods enable the formation of a discrete and uniform absorber layer of a desired thickness.
- a first dielectric layer is deposited on the absorber layer to a desired optical thickness by a conventional deposition process.
- the deposition of the dielectric layer can be accomplished by a vapor deposition process (e.g., PVD, CVD, PECVD), which results in the dielectric layer cracking under the stresses imposed as the dielectric transitions from the vapor into the solid phase.
- the magnetic core is then deposited.
- a first 1 reflector layer is then deposited by PVD, CVD, or PECVD on the first dielectric layer, taking on the characteristics of the underlying cracked dielectric layer.
- Magnetic layers are then applied by e-beam evaporation, sputtering, electrodeposition, or CVD, followed by a second reflector layer being deposited.
- a second dielectric layer being deposited on the second reflector layer and preferably having the same optical thickness as the first dielectric layer.
- a second absorber layer is deposited on the second dielectric layer and preferably has the same physical thickness as the first absorber layer.
- the flexible web is removed, either by dissolution in a preselected liquid or by way of a release layer, both of which are well known to those skilled in the art.
- a plurality of flakes are fractured out along the cracks of the layers during removal of the web from the multilayer thin film.
- This method of manufacturing pigment flakes is similar to that more fully described in U.S. Pat. No. 5,135,812 to Phillips et al., the disclosure of which is incorporated by reference herein.
- the pigment flakes can be further fragmented if desired by, for example, grinding the flakes to a desired size using an air grind, such that each of the pigment flakes has a dimension on any surface thereof ranging from about 2 microns to about 200 microns.
- an annealing process can be employed to heat treat the flakes at a temperature ranging from about 200-300° C., and preferably from about 250-275° C., for a time period ranging from about 10 minutes to about 24 hours, and preferably a time period of about 15-60 minutes.
- flake 240 is deposited according to another embodiment of the invention.
- flake 240 is a multilayer design having a generally symmetrical thin film structure on opposing sides of a magnetic layer such as a reflective magnetic core 242 , which can be any non-color shifting magnetic pigment flake or particle having reflective properties described herein or known in the art.
- reflective magnetic core 242 can be a single reflective magnetic layer such as a monolithic layer of Ni or other magnetic reflective metal, or can be a multilayer magnetic structure such as Al/Fe/Al.
- a first colored layer such as selective absorber layer 244 a and a second colored layer such as selective absorber layer 244 b are formed on opposing major surfaces of reflective magnetic core 242 .
- These colored layers of flake 240 can be formed by a web coating and flake removal process as described previously.
- FIG. 12 further depicts an alternative coating structure (with phantom lines) for flake 240 , in which a colored layer such as selective absorber layer 244 is coated around reflective magnetic core 242 in an encapsulation process. Accordingly, selective absorber layers 244 a and 244 b are formed as part of a contiguous coating layer 244 substantially surrounding the flake structure thereunder.
- Suitable encapsulation methods for forming flake 240 are as described in a copending U.S. Application Serial No. 09/626,041, filed Jul. 27, 2000, the disclosure of which is incorporated by reference herein.
- pigment flake 240 may be embodied either as a multilayer thin film stack flake or a multilayer thin film encapsulated particle. Suitable materials and thicknesses for use in the reflective magnetic core of flake 240 are the same as taught hereinabove, so long as both reflective and magnetic properties are maintained.
- the colored layers of flake 240 can be formed of a variety of different absorbing and/or reflecting materials in one or more layers.
- the colored layers such as selective absorber layers are formed to have a thickness of from about 0.05 ⁇ m to about 5 110 ⁇ m, and more preferably from about 1 ⁇ m to about 2 ⁇ m, by conventional coating processes for dye stuffs, when an organic dye material is utilized to form the selective absorber layers.
- the colored layers are formed to have a thickness of from about 0.05 ⁇ m to about 0.10 ⁇ m when colored metallics or other inorganic colorant materials are utilized.
- suitable organic dyes that can be used to form the selective absorber layers of flake 240 include copper phthalocyanine, perylene-based dyes, anthraquinone 17 based dyes, and the like; azo dyes and azo metal dyes such as aluminum red (RLW), aluminum copper, aluminum bordeaux (RL), aluminum fire-red (ML), aluminum red (GLW), aluminum violet (CLW), and the like; as well as combinations or mixtures thereof.
- Such dyes can be applied by conventional coating techniques and even by evaporation.
- the colored layers of flake 240 can also be formed of a variety of conventional organic or inorganic pigments applied singly or dispersed in a pigment vehicle. Such pigments are described in the NPIRI Raw Materials Data Handbook, Vol. 4, Pigments (1983), the disclosure of which is incorporated by reference herein.
- the selective absorber layers of flake 240 comprise a solgel matrix holding a colored pigment or dye.
- the selective absorber layer can be formed of aluminum oxide or silicon dioxide applied by a sol-gel process, with organic dyes absorbed into pores of the sol-gel coating or bound to the surface of the coating.
- Suitable organic dyes used in the sol-gel coating process include those available under the trade designations Aluminiumrot GLW (aluminum red GLW) and Aluminiumviolett CLW (aluminum violet CLW) from the Sandoz Company.
- Aluminum red GLW is an azo metal complex containing copper
- aluminum violet CLW is a purely organic azo dye.
- sol-gel coating techniques useful in the present invention are disclosed in the following: U.S. Pat. No. 4,756,771 to Brodalla (1988); Zink et al., Optical Probes and Properties of Aluminosilicate Glasses Prepared by the SolGel Method, Polym. Mater. Sci. Eng., 61, pp. 204-208 (1989); and McKieman et al., Luminescence and Laser Action of Coumarin Dyes Doped in Silicate and Aluminosilicate Glasses Prepared by the Sol-Gel Technique, J. Inorg. Organomet. Polym., 1(1), pp. 87-103 (1991); the disclosures of all of these are incorporated herein by reference.
- the colored layers of flake 240 can be formed of an inorganic colorant material.
- suitable inorganic colorants include selective absorbers such as titanium nitride, chromium nitride, chromium oxide, iron oxide, cobalt-doped alumina, and the like, as well as colored metallics such as copper, brass, titanium, and the like.
- additional dielectric, absorber, and/or other optical coatings can be formed around each of the above flake or particle embodiments, or on a composite reflective film prior to flake formation, to yield further desired optical characteristics.
- additional coatings can provide additional color effects to the pigments.
- a colored dielectric coating added to a color shifting flake would act as a color filter on the flake, providing a subtractive color effect which changes the color produced by the flake.
- the pigment flakes of the present invention can be interspersed within a pigment medium to produce a colorant composition which can be applied to a wide variety of objects or papers.
- the pigment flakes added to a medium produces a predetermined optical response through radiation incident on a surface of the solidified medium.
- the pigment medium contains a resin or mixture of resins which can be dried or hardened by thermal processes such as thermal cross-linking, thermal setting, or thermal solvent evaporation or by photochemical cross-linking.
- Useful pigment media include various polymeric compositions or organic binders such as alkyd resins, polyester resins, acrylic resins, polyurethane resins, vinyl resins, epoxies, styrenes, and the like.
- Suitable examples of these resins include melamine, acrylates such as methyl methacrylate, ABS resins, ink and paint formulations based on alkyd resins, and various mixtures thereof.
- the flakes combined with the pigment media produce a colorant composition that can be used directly as a paint, ink, or moldable plastic material.
- the colorant composition can also be utilized as an additive to conventional paint, ink, or plastic materials.
- the pigment medium also preferably contains a solvent for the resin.
- a solvent for the resin generally, either an organic solvent or water can be used.
- a volatile solvent can also be used in the medium.
- the volatile solvent it is preferable to use a solvent which is both volatile as well as dilutable, such as a thinner.
- faster drying of the pigment medium can be achieved by increasing the amount of the solvent with a low boiling point composition such as methyl ethyl ketone (MEK).
- MEK methyl ethyl ketone
- the flakes can be optionally blended with various additive materials such as conventional pigment flakes, particles, or dyes of different hues, chroma and brightness to achieve the color characteristics desired.
- the flakes can be mixed with other conventional pigments, either of the interference type or noninterference type, to produce a range of other colors.
- This preblended composition can then be dispersed into a polymeric medium such as a paint, ink, plastic or other polymeric pigment vehicle for use in a conventional manner.
- suitable additive materials that can be combined with the flakes of the invention include non-color shifting high chroma or high reflective platelets which produce unique color effects, such as MgF 2 /Al/MgF 2 platelets, or SiO 2 /Al/SiO 2 platelets.
- lamellar pigments such as multi-layer color shifting flakes, aluminum flakes, graphite flakes, glass flakes, iron oxide, boron nitride, mica flakes, interference based TiO 2 coated mica flakes, interference pigments based on multiple coated plate-like silicatic substrates, metal-dielectric or all-dielectric interference pigments, and the like; and non-lamellar pigments such as aluminum powder, carbon black, ultramarine blue, cobalt based pigments, organic pigments or dyes, rutile or spinel based inorganic pigments, naturally occurring pigments, inorganic pigments such as titanium dioxide, talc, china clay, and the like; as well as various mixtures thereof.
- pigments such as aluminum powder or carbon black can be added to control lightness and other color properties.
- the magnetic color shifting flakes of the present invention are particularly suited for use in applications where colorants of high chroma and durability are desired.
- high chroma durable paint or ink can be produced in which variable color effects are noticeable to the human eye.
- the color shifting flakes of the invention have a wide range of color shifting properties, including large shifts in chroma (degree of color purity) and also large shifts in hue (relative color) with a varying angle of view.
- an object colored with a paint containing the color shifting flakes of the invention will change color depending upon variations in the viewing angle or the angle of the object relative to the viewing eye.
- the pigment flakes of the invention can be easily and economically utilized in paints and inks which can be applied to various objects or papers, such as motorized vehicles, currency and security documents, household appliances, architectural structures, flooring, fabrics, sporting goods, electronic packaging/housing, product packaging, etc.
- the color shifting flakes can also be utilized in forming colored plastic materials, coating compositions, extrusions, electrostatic coatings, glass, and ceramic materials.
- the foils of the invention have a nonsymmetrical thin film coating structure, which can correspond to the layer structures on one side of an RMF in any of the above described embodiments related to thin film stack flakes.
- the foils can be laminated to various objects or can be formed on a carrier substrate.
- the foils of the invention can also be used in a hot stamping configuration where the thin film stack of the foil is removed from a release layer of a substrate by use of a heat activated adhesive and applied to a countersurface.
- the adhesive can be either coated on a surface of the foil opposite from the substrate, or can be applied in the form of a UV activated adhesive to the surface on which the foil will be affixed.
- FIG. 13 depicts a coating structure of a color shifting foil 300 formed on a substrate 302 , which can be any suitable material such as a flexible PET web, carrier substrate, or other plastic material.
- a suitable thickness for substrate 302 is, for example, about 2 to 7 mils.
- the foil 300 includes a magnetic layer 304 on substrate 302 , a reflector layer 306 on magnetic layer 304 , a dielectric layer 308 on reflector layer 306 , and an absorber layer 310 on dielectric layer 308 .
- the magnetic, reflector, dielectric and absorber layers can be composed of the same materials and can have the same thicknesses as described above for the corresponding layers in flakes 20 and 40 .
- the foil 300 can be formed by a web coating process, with the various layers as described above sequentially deposited on a web by conventional deposition techniques to form a thin film foil structure.
- the foil 300 can be formed on a release layer of a web so that the foil can be subsequently removed and attached to a surface of an object.
- the foil 300 can also be formed on a carrier substrate, which can be a web without a release layer.
- FIG. 14 illustrates one embodiment of a foil 320 disposed on a web 322 having an optional release layer 324 on which is deposited a magnetic layer 326 , a reflector layer 328 , a dielectric layer 330 , and an absorber layer 332 .
- the foil 320 may be utilized attached to web 322 as a carrier when a release layer is not employed.
- foil 320 may be laminated to a transparent substrate (not shown) via an optional adhesive layer 334 , such as a transparent adhesive or ultraviolet (UV) curable adhesive, when the release layer is used.
- the adhesive layer 334 is applied to absorber layer 332 .
- FIG. 15 depicts an alternative embodiment in which a foil 340 having the same thin film layers as foil 320 is disposed on a web 322 having an optional release layer 324 .
- the foil 340 is formed such that absorber layer 332 is deposited on web 322 .
- the foil 340 may be utilized attached to web 322 as a carrier, which is preferably transparent, when a release layer is not employed.
- the foil 340 may also be attached to a substrate such as a countersurface 342 when the release layer is used, via an adhesive layer 334 such as a hot stampable adhesive, a pressure sensitive adhesive, a permanent adhesive, and the like.
- the adhesive layer 334 can be applied to magnetic layer 326 and/or to countersurface 342 .
- the optical stack of the foil is arranged so that the optically exterior surface is adjacent the release layer.
- absorber layer 332 is optically present on the exterior.
- release layer 324 is a transparent hardcoat that stays on absorber layer 332 to protect the underlying layers after transfer from web 322 .
- the optical article 400 includes a substrate 402 having an upper surface 404 and a lower surface 406 .
- the substrate 402 can be flexible or rigid and can be formed of any suitable material such as paper, plastic, cardboard, metal, or the like, and can be opaque or transparent.
- Non-overlapping paired first and second coating structures 408 , 410 are disposed on upper surface 404 so as to overlie non-overlapping first and second regions on surface 404 .
- first and second coating structures 408 , 410 are not superimposed but are physically separated from each other on surface 404 , although in an abutting relationship.
- first coating structure 408 can be in the form of a rectangle or square and is disposed within a recess 412 formed by second coating structure 410 , also being in the form of a rectangle or square that forms a border or frame that surrounds first coating structure 408 .
- first coating structure 408 , 410 can be viewed simultaneously.
- the first coating structure 408 has a first pigment 414 formed of magnetic pigment flakes or particles, such as color shifting magnetic flakes, constructed in the manner hereinbefore described to provide a magnetic signature.
- the magnetic properties of pigment 414 are provided by a non-optically observable magnetic-layer within one or more of the magnetic flakes or particles.
- the second coating structure 410 has a second pigment 416 formed of non-magnetic pigment flakes or particles, such as color shifting non-magnetic flakes.
- the second coating structure 410 could be formed to contain the magnetic pigments and the first coating structure 408 could be formed to contain the non-magnetic pigments.
- the pigments 414 , 416 are dispersed in a solidified liquid pigment vehicle 418 , 420 of a conventional type so that the pigments 414 , 416 produce the desired optical characteristics.
- the liquid vehicle can be a conventional ink vehicle or a conventional paint vehicle of a suitable type.
- optical article 400 can be formed by using a suitable magnetic foil structure, such as the color shifting magnetic foils disclosed hereinabove, in place of coating structure 408 , and by using a non-magnetic foil structure such as a conventional color shifting foil in place of coating structure 410 .
- the magnetic properties of the magnetic foil structure are thus provided by a magnetic layer which is not optically observable.
- Non-overlapping paired first and second foil structures, one magnetic and one non-magnetic, would be disposed on upper surface 404 of substrate 402 so as to overlie non-overlapping first and second regions on surface 404 .
- FIG. 17 another embodiment of the invention is depicted in the form of an optical article 450 having overlapping paired optical structures.
- the optical article 450 includes a substrate 452 having an upper surface region 454 .
- the substrate 452 can be formed of the same materials as described for substrate 402 shown in FIG. 16.
- a magnetic pigment coating structure 456 overlies upper surface region 454 of substrate 452 .
- the magnetic pigment coating structure 456 includes a plurality of multilayer magnetic pigments 458 , such as those described previously, which are dispersed in a solidified pigment vehicle.
- the magnetic properties of the pigment coating structure 456 are provided by a non-optically observable magnetic layer within each of the multilayer magnetic pigments 458 .
- a non-magnetic pigment coating structure 460 overlies at least a portion of magnetic pigment coating structure 456 .
- the non-magnetic pigment coating structure 460 includes a plurality of non-magnetic pigments 462 dispersed in a solidified pigment vehicle.
- a non-magnetic pigment coating structure can be used in place of magnetic pigment coating structure 456 overlying upper surface region 454 of substrate 452 .
- a magnetic pigment coating structure is then used in place of non-magnetic pigment coating structure 460 .
- optical article 450 can be formed by using a suitable magnetic foil structure, such as the color shifting magnetic foils disclosed hereinabove, in place of coating structure 456 .
- a non-magnetic foil structure such as a conventional color shifting foil is then used in place of coating structure 460 .
- a non-magnetic foil structure can be used in place of coating structure 456 , and a magnetic foil structure is then used in place of coating structure 460 .
- the respective pigment coating or foil structures in optical articles 400 or 450 can be selected to provide identical coloring or identical color shifting effects to articles 400 and 450 , or can be selected to provide different colors or different color shifting effects.
- optical features can be used by selecting appropriate coatings or foils with the desired optical characteristics to add various security features to optical articles 400 and 450 .
- the pigment coating or foil structures used in articles 400 and 450 may have substantially the same color or color effects, e.g., the same color shifting effects, only one of the pigment coating or foil structures in the articles carries a covert magnetic signature. Therefore, although a human eye cannot detect the magnetic features of the pigment coating or foil structure, a magnetic detection system such as a Faraday rotator detector can be used to detect the magnetic covert signature in the pigment or foil and any information magnetically encoded therein.
- a magnetic detection system such as a Faraday rotator detector can be used to detect the magnetic covert signature in the pigment or foil and any information magnetically encoded therein.
- a structure or device formed with the pigments of the invention can be placed in a bar code pattern which would produce a color shifting bar code device that can appear on a label or on an article itself.
- a bar code would function as a color shifting bar code that could be read by both optical and magnetic readers.
- Such a bar code color shifting device would provide three security features, the bar code itself, the color shifting characteristic, and the magnetic characteristic.
- information can be encoded in the magnetic layers of the pigments of the invention.
- the magnetic layers could record typical information which is carried by a credit card in a magnetic stripe.
- pigments of the invention could be utilized for putting the numbers on the bottoms of checks so that the information carried by the check could be read magnetically as with present day checks while also providing an optical variable feature.
- a three layer magnetic coating sample was prepared with 1000 ⁇ Aluminum, 1000 ⁇ Iron, and 1000 ⁇ Aluminum (Al/Fe/Al).
- the coating sample was prepared in a roll coater, using a 2 mil polyester web coated with an organic release layer (soluble in acetone).
- the particles were filtered and sized by exposing the particles in isopropyl alcohol to ultrasonic agitation for 5 minutes using a Branson sonic welder.
- Particle size was determined using a Horiba LA-300 particle sizing instrument (laser scattering based system). The mean particle size was determined to be 44 ⁇ m (22 ⁇ m standard deviation) in the planar dimension, with a gaussian distribution.
- the pigment particles were filtered and dried.
- a dry weight of magnetic pigment to binder (Du Pont auto refinish paint vehicle) in the ratio of 1:4 was drawn down onto a thin cardboard sheet (Leneta card).
- a “drawdown” is a paint or ink sample spread on paper to evaluate the color.
- a drawdown is formed with the edge of a putty knife or spatula by “drawing down” a small glob of paint or ink to get a thin film of the paint or ink.
- the draw-down is made using a Mayer rod pulled across a Leneta card and through a small glob of paint.
- a conventional sheet magnet was placed underneath the card while the drawing down was occurring and left in place until the paint vehicle dried.
- the result of the magnetic fields on this pigment sample was to create parallel bright and dark areas in the pigment.
- the bright aluminum areas of the pigment sample had a reflective luminance, Y, of 53% whereas the dark areas had a reflective luminance of 43%.
- a magnetic ink sample was prepared by mixing a 0.5 g sample of the magnetic pigment of Example 1 (Al/Fe/Al) with 3.575 g of standard Intaglio ink vehicle (high viscosity ink vehicle) and 0.175 g of an ink dryer. The ink sample was drawn down onto paper using a flat putty knife. A magnetic strip with the word “FLEX” cut out from it was placed beneath the paper during the drawing down step. The pattern of the magnetic lines in the dried magnetic ink was readily visible as black and white (silver color) strips with the word “FLEX” readily apparent. The optical image of the word “FLEX” in the ink sample was visible at normal incidence and at approximately a 45 degree angle of viewing.
- a magnetic ink sample was prepared as in Example 2 using an Intaglio ink vehicle and coated over paper having a sheet magnet placed behind it.
- the magnet had a cut out of a stylized letter “F.”
- the cut out “F” was embossed upward away from the paper and was bright silver in appearance.
- the “F” stood out over the surrounding area by about 6 microns. This was caused by the paper pushed slightly into the “F” recess of the magnet by the force of the putty knife drawing down the highly viscous Intaglio ink.
- the “F” area remained bright with the Al/Fe/Al flakes oriented parallel to the surface of the paper but in a stepped-up height above the surrounding coating.
- a stylized letter “F” was cut out of a flexible sheet magnet using an exacto knife.
- a draw-down card was placed on top of and in contact with the sheet magnet.
- a magnetic color shifting pigment according to the invention was mixed with an acrylic resin based vehicle and applied to the card with a #22 wire metering rod.
- the resultant draw-down had striped superimposed black lines that replicated the field pattern outside of the stylized “F” in the sheet magnet below the card.
- the entire surface of the drawn-down card exhibited color shifting effects. Where the pattern of the stylized “F” was observed, the stylized “F” only had color shifting effects, while the background had both color shifting effects and the superimposed black lines.
Priority Applications (30)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/844,261 US20020160194A1 (en) | 2001-04-27 | 2001-04-27 | Multi-layered magnetic pigments and foils |
KR1020077024999A KR100856430B1 (ko) | 2001-04-27 | 2002-01-16 | 다층 자성 안료 및 박 |
CN2006100770079A CN1854204B (zh) | 2001-04-27 | 2002-01-16 | 多层磁性颜料片和箔 |
AT02765768T ATE557068T1 (de) | 2001-04-27 | 2002-01-16 | Mehrschichtige magnetische pigmente und folien |
KR1020087018022A KR100931623B1 (ko) | 2001-04-27 | 2002-01-16 | 다층 자성 안료 및 박 |
ES02765768T ES2386137T3 (es) | 2001-04-27 | 2002-01-16 | Pigmentos y láminas magnéticos multicapa |
AT07021052T ATE535578T1 (de) | 2001-04-27 | 2002-01-16 | Mehrschichtige magnetische pigmente und folien |
EP07021053.9A EP1918333B1 (de) | 2001-04-27 | 2002-01-16 | Mehrschichtige magnetische Pigmente |
KR1020077024998A KR100856105B1 (ko) | 2001-04-27 | 2002-01-16 | 다층 자성 안료 및 박 |
AU2002329168A AU2002329168A1 (en) | 2001-04-27 | 2002-01-16 | Multi-layered magnetic pigments and foils |
PT07021052T PT1921117E (pt) | 2001-04-27 | 2002-01-16 | Pigmentos e películas metalizadas magnéticos multicamada |
ES07021052T ES2377534T3 (es) | 2001-04-27 | 2002-01-16 | Pigmentos magnéticos de multi-capas y papeles metalizados |
DK07021052.1T DK1921117T3 (da) | 2001-04-27 | 2002-01-16 | Flerlagede magnetiske pigmenter og folier |
CNB028088328A CN1288674C (zh) | 2001-04-27 | 2002-01-16 | 多层磁性颜料片和箔 |
EP07021050.5A EP1918331B1 (de) | 2001-04-27 | 2002-01-16 | Mehrschichtige magnetische Pigmente |
JP2003507196A JP4353792B2 (ja) | 2001-04-27 | 2002-01-16 | 多層磁性ピグメントおよび箔 |
EP07021051.3A EP1918332B1 (de) | 2001-04-27 | 2002-01-16 | Mehrschichtige magnetische Pigmente |
EP07021052A EP1921117B1 (de) | 2001-04-27 | 2002-01-16 | Mehrschichtige magnetische Pigmente und Folien |
PCT/US2002/001059 WO2003000801A2 (en) | 2001-04-27 | 2002-01-16 | Multi-layered magnetic pigments and foils |
EP02765768A EP1412432B1 (de) | 2001-04-27 | 2002-01-16 | Mehrschichtige magnetische pigmente und folien |
KR1020077024997A KR100856533B1 (ko) | 2001-04-27 | 2002-01-16 | 다층 자성 안료 및 박 |
EP07021054.7A EP1918334B1 (de) | 2001-04-27 | 2002-01-16 | Mehrschichtige magnetische Pigmente |
KR1020037014038A KR100915147B1 (ko) | 2001-04-27 | 2002-01-16 | 다층 자성 안료 및 박 |
KR1020077025000A KR100856429B1 (ko) | 2001-04-27 | 2002-01-16 | 다층 자성 안료 및 박 |
US10/360,964 US6818299B2 (en) | 2001-04-27 | 2003-02-07 | Multi-layered magnetic pigments and foils |
US10/637,605 US6838166B2 (en) | 2001-04-27 | 2003-08-08 | Multi-layered magnetic pigments and foils |
JP2007274512A JP4937879B2 (ja) | 2001-04-27 | 2007-10-22 | 多層磁性ピグメントおよび箔 |
JP2007293763A JP4863512B2 (ja) | 2001-04-27 | 2007-11-12 | 多層磁性ピグメントおよび箔 |
JP2008331550A JP5132540B2 (ja) | 2001-04-27 | 2008-12-25 | 多層磁性ピグメントおよび箔 |
CY20121100043T CY1112965T1 (el) | 2001-04-27 | 2012-01-16 | Μαγνητικα πιγμεντα απο περισσοτερες στρωσεις και φυλλα |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/844,261 US20020160194A1 (en) | 2001-04-27 | 2001-04-27 | Multi-layered magnetic pigments and foils |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/360,964 Division US6818299B2 (en) | 2001-04-27 | 2003-02-07 | Multi-layered magnetic pigments and foils |
US10/637,605 Continuation US6838166B2 (en) | 2001-04-27 | 2003-08-08 | Multi-layered magnetic pigments and foils |
Publications (1)
Publication Number | Publication Date |
---|---|
US20020160194A1 true US20020160194A1 (en) | 2002-10-31 |
Family
ID=25292242
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/844,261 Abandoned US20020160194A1 (en) | 2001-04-27 | 2001-04-27 | Multi-layered magnetic pigments and foils |
US10/360,964 Expired - Lifetime US6818299B2 (en) | 2001-04-27 | 2003-02-07 | Multi-layered magnetic pigments and foils |
US10/637,605 Expired - Lifetime US6838166B2 (en) | 2001-04-27 | 2003-08-08 | Multi-layered magnetic pigments and foils |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/360,964 Expired - Lifetime US6818299B2 (en) | 2001-04-27 | 2003-02-07 | Multi-layered magnetic pigments and foils |
US10/637,605 Expired - Lifetime US6838166B2 (en) | 2001-04-27 | 2003-08-08 | Multi-layered magnetic pigments and foils |
Country Status (12)
Country | Link |
---|---|
US (3) | US20020160194A1 (de) |
EP (6) | EP1921117B1 (de) |
JP (4) | JP4353792B2 (de) |
KR (6) | KR100856533B1 (de) |
CN (2) | CN1854204B (de) |
AT (2) | ATE557068T1 (de) |
AU (1) | AU2002329168A1 (de) |
CY (1) | CY1112965T1 (de) |
DK (1) | DK1921117T3 (de) |
ES (2) | ES2377534T3 (de) |
PT (1) | PT1921117E (de) |
WO (1) | WO2003000801A2 (de) |
Cited By (115)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6666991B1 (en) * | 1998-11-27 | 2003-12-23 | Nittetsu Mining Co., Ltd. | Fluorescent or phosphorescent composition |
US20040166308A1 (en) * | 2003-02-13 | 2004-08-26 | Raksha Vladimir P. | Robust multilayer magnetic pigments and foils |
WO2005000585A1 (fr) | 2003-06-30 | 2005-01-06 | Kba-Giori S.A. | Machine d'impression |
US20050001038A1 (en) * | 2001-08-16 | 2005-01-06 | Harald Walter | Forgery-proof marking for objects and method for identifying such a marking |
US20050031564A1 (en) * | 2002-12-13 | 2005-02-10 | Zimmermann Curtis J. | Color effect materials and production thereof |
US20050042449A1 (en) * | 2003-07-14 | 2005-02-24 | Jds Uniphase Corporation, | Vacuum roll coated security thin film interference products with overt and/or covert patterned layers |
US20050151368A1 (en) * | 2002-02-22 | 2005-07-14 | Manfred Heim | Security document and security element for a security document |
US20060043200A1 (en) * | 2004-08-31 | 2006-03-02 | Infineon Technologies Ag | Chip card module |
US20060134433A1 (en) * | 2004-12-21 | 2006-06-22 | Planar Systems Oy | Multilayer material and method of preparing same |
US20060251754A1 (en) * | 2003-07-25 | 2006-11-09 | Peter Herring | Methods and apparatus for forming a moulding comprising magnetic particles |
EP1726455A2 (de) * | 2005-05-25 | 2006-11-29 | JDS Uniphase Corporation | Verfahren zur Erzeugung von zwei verschiedenen Plättchenprodukten bei Benutzung eines einzigen Substrats |
US20070076292A1 (en) * | 2005-09-27 | 2007-04-05 | Taiwan Semiconductor Manufacturing Company, Ltd. | Fully electric field shielding reticle pod |
WO2007089708A2 (en) * | 2006-02-01 | 2007-08-09 | Basf Catalysts Llc | Plastic article comprising oriented effect magnetizable pigments |
US20070251603A1 (en) * | 2006-04-26 | 2007-11-01 | Olson Barry D | Novel surface aesthetics employing magnetic particles |
US20070254106A1 (en) * | 2006-04-26 | 2007-11-01 | Olson Barry D | Novel aesthetics in surfaces employing deformation and magnetic means |
EP1880866A1 (de) * | 2006-07-19 | 2008-01-23 | Sicpa Holding S.A. | Orientierte Bildbeschichtung auf einem durchsichtigen Substrat |
US20080019003A1 (en) * | 2003-07-14 | 2008-01-24 | Jds Uniphase Corporation | Vacuum Roll Coated Security Thin Film Interference Products With Overt And/Or Covert Patterned Layers |
US20080060974A1 (en) * | 2006-02-21 | 2008-03-13 | Taiwan Semiconductor Manufacturing Company, Ltd. | Mask carrier treatment to prevent haze and ESD damage |
US20080069979A1 (en) * | 2006-04-11 | 2008-03-20 | Jds Uniphase Corporation | Security image coated with a single coating having visually distinct regions |
US20080073613A1 (en) * | 2006-03-29 | 2008-03-27 | Inoac Corporation | Coating Composition for Forming Pattern and Coated Article |
US20080096009A1 (en) * | 2004-06-24 | 2008-04-24 | University Of Delaware | High Frequency Soft Magnetic Materials With Laminated Submicron Magnetic Layers And The Methods To Make Them |
US20080110371A1 (en) * | 2006-11-09 | 2008-05-15 | Sun Chemical Corporation | Security pigments and the process of making thereof |
US20080110372A1 (en) * | 2006-11-09 | 2008-05-15 | Hollman Aaron M | Multi-Colored Lustrous Pearlescent Pigments and Process for Making |
US20080118452A1 (en) * | 2006-11-09 | 2008-05-22 | Hollman Aaron M | Cosmetic Comprising Multi-Colored Lustrous Pearlescent Pigments |
US20080124575A1 (en) * | 2006-11-09 | 2008-05-29 | Hollman Aaron M | Coating, Ink, or Article Comprising Multi-Colored Lustrous Pearlescent Pigments |
JP2008529823A (ja) * | 2004-12-09 | 2008-08-07 | シクパ・ホールディング・ソシエテ・アノニム | 視野角依存性の外観をもつセキュリティエレメント |
US20090072185A1 (en) * | 2001-07-31 | 2009-03-19 | Jds Uniphase Corporation | Anisotropic Magnetic Flakes |
US20090184169A1 (en) * | 2006-05-12 | 2009-07-23 | Sicpa Holding S.A. | Coating Composition for Producing Magnetically Induced Images |
US20090208436A1 (en) * | 2006-11-09 | 2009-08-20 | Aaron Hollman | Orange pearlescent pigments |
WO2010115928A2 (en) | 2009-04-07 | 2010-10-14 | Sicpa Holding Sa | Piezochromic security element |
WO2010115986A3 (en) * | 2009-04-09 | 2010-12-16 | Sicpa Holding Sa | Clear magnetic intaglio printing ink |
WO2011012520A2 (en) | 2009-07-28 | 2011-02-03 | Sicpa Holding Sa | Transfer foil comprising optically variable magnetic pigment, method of making, use of transfer foil, and article or document comprising such |
WO2011091969A1 (de) * | 2010-01-29 | 2011-08-04 | Giesecke & Devrient Gmbh | Sicherheitselement mit erweitertem farbkippeffekt und thermochromer zusatzfunktion |
WO2011107527A1 (en) | 2010-03-03 | 2011-09-09 | Sicpa Holding Sa | Security thread or stripe comprising oriented magnetic particles in ink, and method and means for producing same |
EP1780040A3 (de) * | 2005-10-25 | 2012-08-22 | JDS Uniphase Corporation | Gemusterte optische Struktur mit verbessertem Sicherheitsmerkmal |
US8349067B2 (en) | 2006-11-09 | 2013-01-08 | Sun Chemical Corp. | Multi-colored lustrous pearlescent pigments |
CN103343486A (zh) * | 2013-06-21 | 2013-10-09 | 陕西科技大学 | 一种具有磁特性和发光特性纸的制备方法 |
CN103468056A (zh) * | 2013-08-07 | 2013-12-25 | 中钞油墨有限公司 | 含有微结构材料的防伪油墨组合物及其制备方法 |
CN103602102A (zh) * | 2013-11-15 | 2014-02-26 | 浙江凯色丽科技发展有限公司 | 一种3d变色珠光颜料 |
WO2014055555A1 (en) | 2012-10-01 | 2014-04-10 | Jds Uniphase Corporation | A colorant including a mixture of pigments |
WO2014086556A1 (en) | 2012-12-07 | 2014-06-12 | Sicpa Holding Sa | Oxidatively drying ink compositions |
US8814862B2 (en) | 2005-05-12 | 2014-08-26 | Innovatech, Llc | Electrosurgical electrode and method of manufacturing same |
US20140300096A1 (en) * | 2011-09-26 | 2014-10-09 | Crane Security Technologies, Inc. | Method for producing a composite web and security devices prepared from the composite web |
US8893614B2 (en) | 2007-05-10 | 2014-11-25 | Kba-Notasys Sa | Device and method for magnetically transferring indicia to a coating composition applied to a substrate |
US20150064360A1 (en) * | 2013-08-30 | 2015-03-05 | Ut-Battelle, Llc | Apparatus and method for materials processing utilizing a rotating magnetic field |
US20150071973A1 (en) * | 2012-09-14 | 2015-03-12 | Toyo Aluminium Kabushiki Kaisha | Colored metallic pigment and method for producing the same |
WO2015086257A1 (en) | 2013-12-13 | 2015-06-18 | Sicpa Holding Sa | Processes for producing effects layers |
US9083896B2 (en) | 2013-09-18 | 2015-07-14 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9082068B1 (en) | 2014-05-06 | 2015-07-14 | Xerox Corporation | Color shift printing without using special marking materials |
US9088736B2 (en) | 2013-09-18 | 2015-07-21 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9100592B2 (en) | 2013-09-18 | 2015-08-04 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9106847B2 (en) | 2013-09-18 | 2015-08-11 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9118870B2 (en) | 2013-09-18 | 2015-08-25 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9193201B2 (en) | 2013-09-18 | 2015-11-24 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9237253B2 (en) | 2013-09-18 | 2016-01-12 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
WO2016016028A1 (en) | 2014-07-30 | 2016-02-04 | Sicpa Holding Sa | Belt-driven processes for producing optical effect layers |
US9516190B1 (en) | 2015-11-25 | 2016-12-06 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9538041B1 (en) | 2015-11-25 | 2017-01-03 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9614995B1 (en) | 2016-05-02 | 2017-04-04 | Xerox Corporation | System and method for generating vector based correlation marks and vector based gloss effect image patterns for rendering on a recording medium |
US9630206B2 (en) | 2005-05-12 | 2017-04-25 | Innovatech, Llc | Electrosurgical electrode and method of manufacturing same |
US9661186B1 (en) | 2016-06-02 | 2017-05-23 | Xerox Corporation | System and method for rendering gloss effect image patterns on a recording medium |
US9674392B1 (en) | 2015-11-25 | 2017-06-06 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9674391B1 (en) | 2015-11-25 | 2017-06-06 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9701152B2 (en) | 2012-08-29 | 2017-07-11 | Sicpa Holding Sa | Optically variable security threads and stripes |
US9756212B2 (en) | 2015-11-25 | 2017-09-05 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9781294B1 (en) | 2016-08-09 | 2017-10-03 | Xerox Corporation | System and method for rendering micro gloss effect image patterns on a recording medium |
US9844969B2 (en) | 2012-08-01 | 2017-12-19 | Sicpa Holdings Sa | Optically variable security threads and stripes |
US20170368866A1 (en) * | 2016-06-27 | 2017-12-28 | Viavi Solutions Inc. | High chromaticity pigment flakes and foils |
WO2018019594A1 (en) | 2016-07-29 | 2018-02-01 | Sicpa Holding Sa | Processes for producing effect layers |
WO2018033512A1 (en) | 2016-08-16 | 2018-02-22 | Sicpa Holding Sa | Processes for producing effects layers |
EP3335899A1 (de) * | 2016-12-19 | 2018-06-20 | Viavi Solutions Inc. | Sicherheitstinte basierend auf sicherheitsmerkmalen |
EP3339381A1 (de) * | 2016-12-21 | 2018-06-27 | Viavi Solutions Inc. | Teilchen mit aufgedampftem farbstoff |
US20180194946A1 (en) * | 2017-01-10 | 2018-07-12 | Schlenk Metallic Pigments Gmbh | Pearlescent pigments obtained by wet oxidation |
US10051156B2 (en) | 2012-11-07 | 2018-08-14 | Xerox Corporation | System and method for producing correlation and gloss mark images |
WO2018160639A1 (en) * | 2017-03-01 | 2018-09-07 | Viavi Solutions Inc. | Lamellar particles and methods of manufacture |
CN108559312A (zh) * | 2018-05-25 | 2018-09-21 | 苗霞明 | 一种钴着色云母珠光颜料的制备方法 |
US10166810B2 (en) * | 2014-07-09 | 2019-01-01 | Sicpa Holding Sa | Optically variable magnetic security threads and stripes |
US10207479B2 (en) | 2016-06-27 | 2019-02-19 | Viavi Solutions Inc. | Magnetic articles |
US10279618B2 (en) | 2013-08-05 | 2019-05-07 | Sicpa Holding Sa | Magnetic or magnetisable pigment particles and optical effect layers |
WO2019141453A1 (en) | 2018-01-17 | 2019-07-25 | Sicpa Holding Sa | Processes for producing optical effects layers |
CN110305501A (zh) * | 2019-07-10 | 2019-10-08 | 济南大学 | 一种颜料嵌入型多层包覆的蓝色铝颜料的制备方法 |
US10453487B2 (en) | 2013-09-30 | 2019-10-22 | Seagate Technology Llc | Magnetic stack including MgO—Ti(ON) interlayer |
WO2019233625A1 (de) * | 2018-06-05 | 2019-12-12 | Giesecke+Devrient Currency Technology Gmbh | Effektpigment, druckfarbe, sicherheitselement, datenträger und herstellungsverfahren |
US20200004032A1 (en) * | 2018-06-29 | 2020-01-02 | Viavi Solutions Inc. | Optical devices with azimuthal modulator layer |
WO2020025482A1 (en) | 2018-07-30 | 2020-02-06 | Sicpa Holding Sa | Assemblies and processes for producing optical effect layers comprising oriented magnetic or magnetizable pigment particles |
WO2020025218A1 (en) | 2018-07-30 | 2020-02-06 | Sicpa Holding Sa | Processes for producing optical effects layers |
WO2020127595A1 (fr) | 2018-12-19 | 2020-06-25 | Oberthur Fiduciaire Sas | Procede pour orienter des particules sensibles au champ magnetique et machine d'impression pour sa mise en oeuvre |
RU2729995C1 (ru) * | 2017-02-20 | 2020-08-13 | Иллинойс Тул Воркс Инк. | Непроводящая магнитная полоса в сборе |
WO2020173693A1 (en) | 2019-02-28 | 2020-09-03 | Sicpa Holding Sa | Method for authenticating a magnetically induced mark with a portable device |
US10844227B2 (en) | 2016-12-21 | 2020-11-24 | Viavi Solutions, Inc. | Hybrid colored metallic pigment |
US10928579B2 (en) | 2016-06-27 | 2021-02-23 | Viavi Solutions Inc. | Optical devices |
US11008477B2 (en) * | 2016-01-29 | 2021-05-18 | Sicpa Holding Sa | Intaglio magnetic machine readable oxidative drying inks |
US11042047B1 (en) * | 2014-08-22 | 2021-06-22 | Sunlight Aerospace Inc. | Mobile system incorporating flexible and tunable optically reflective skin and method of use |
CN113024237A (zh) * | 2021-03-11 | 2021-06-25 | 深圳信义磁性材料有限公司 | 一种磁性纳米复合材料的制备方法 |
US11118061B2 (en) * | 2018-12-17 | 2021-09-14 | Viavi Solutions Inc. | Article including at least one metal portion |
WO2021198976A1 (en) * | 2020-04-02 | 2021-10-07 | Landa Labs (2012) Ltd | Method for making flakes |
WO2021239607A1 (en) | 2020-05-26 | 2021-12-02 | Sicpa Holding Sa | Magnetic assemblies and methods for producing optical effect layers comprising oriented platelet-shaped magnetic or magnetizable pigment particles |
US20210380812A1 (en) * | 2020-06-05 | 2021-12-09 | Viavi Solutions Inc. | Security pigment |
WO2021259527A1 (en) | 2020-06-23 | 2021-12-30 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles |
US11214690B2 (en) | 2015-04-15 | 2022-01-04 | Schlenk Metallic Pigments Gmbh | Pearlescent pigments, process for producing them, and use of such pigments |
US11214689B2 (en) | 2016-06-27 | 2022-01-04 | Viavi Solutions Inc. | High chroma flakes |
WO2022049024A1 (en) | 2020-09-02 | 2022-03-10 | Sicpa Holding Sa | Security documents or articles comprising optical effect layers comprising magnetic or magnetizable pigment particles and methods for producing said optical effect layers |
WO2022049025A1 (en) | 2020-09-02 | 2022-03-10 | Sicpa Holding Sa | Security marking, method and device for reading the security marking, security document marked with the security marking, and method and system for verifying said security document |
US11348725B2 (en) | 2019-04-30 | 2022-05-31 | Unist (Ulsan National Institute Of Science And Technology) | Method of manufacturing visually stereoscopic print film and visually stereoscopic print film manufactured using the method |
US11356287B2 (en) | 2015-10-09 | 2022-06-07 | Lexmark International, Inc. | Injection-molded physical unclonable function |
DE102021000889A1 (de) | 2021-02-19 | 2022-08-25 | Giesecke+Devrient Currency Technology Gmbh | Zusammensetzung, farbkippendes Effektpigment, Druckfarbe und Wertgegenstand |
CN115011146A (zh) * | 2021-03-04 | 2022-09-06 | Viavi科技有限公司 | 包括金属间化合物的颜料 |
WO2022207692A1 (en) | 2021-03-31 | 2022-10-06 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
WO2022258521A1 (en) | 2021-06-11 | 2022-12-15 | Sicpa Holding Sa | Optical effect layers comprising magnetic or magnetizable pigment particles and methods for producing said optical effect layers |
US11680175B2 (en) * | 2018-12-03 | 2023-06-20 | Viavi Solutions Inc. | Composition including a color shifting pigment and a color filter |
US11740532B2 (en) | 2018-12-17 | 2023-08-29 | Viavi Solutions Inc. | Article including light valves |
WO2023161464A1 (en) | 2022-02-28 | 2023-08-31 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
US11787956B2 (en) * | 2010-06-30 | 2023-10-17 | Viavi Solutions Inc. | Magnetic multilayer pigment flake and coating composition |
US11787948B2 (en) | 2017-06-28 | 2023-10-17 | Sicpa Holding Sa | Optical effect pigment |
WO2024028408A1 (en) | 2022-08-05 | 2024-02-08 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
Families Citing this family (170)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6761959B1 (en) * | 1999-07-08 | 2004-07-13 | Flex Products, Inc. | Diffractive surfaces with color shifting backgrounds |
US20070195392A1 (en) * | 1999-07-08 | 2007-08-23 | Jds Uniphase Corporation | Adhesive Chromagram And Method Of Forming Thereof |
US7047883B2 (en) | 2002-07-15 | 2006-05-23 | Jds Uniphase Corporation | Method and apparatus for orienting magnetic flakes |
US7604855B2 (en) * | 2002-07-15 | 2009-10-20 | Jds Uniphase Corporation | Kinematic images formed by orienting alignable flakes |
US7517578B2 (en) * | 2002-07-15 | 2009-04-14 | Jds Uniphase Corporation | Method and apparatus for orienting magnetic flakes |
US7667895B2 (en) | 1999-07-08 | 2010-02-23 | Jds Uniphase Corporation | Patterned structures with optically variable effects |
US11768321B2 (en) | 2000-01-21 | 2023-09-26 | Viavi Solutions Inc. | Optically variable security devices |
WO2001053113A1 (en) * | 2000-01-21 | 2001-07-26 | Flex Products, Inc. | Optically variable security devices |
EP1239307A1 (de) † | 2001-03-09 | 2002-09-11 | Sicpa Holding S.A. | Magnetische Dünnschicht-Interferenz-Vorrichtung |
US6808806B2 (en) * | 2001-05-07 | 2004-10-26 | Flex Products, Inc. | Methods for producing imaged coated articles by using magnetic pigments |
US7625632B2 (en) * | 2002-07-15 | 2009-12-01 | Jds Uniphase Corporation | Alignable diffractive pigment flakes and method and apparatus for alignment and images formed therefrom |
US6582764B2 (en) * | 2001-10-09 | 2003-06-24 | Engelhard Corporation | Hybrid inorganic/organic color effect materials and production thereof |
US8211509B2 (en) * | 2002-07-15 | 2012-07-03 | Raksha Vladimir P | Alignment of paste-like ink having magnetic particles therein, and the printing of optical effects |
US7934451B2 (en) | 2002-07-15 | 2011-05-03 | Jds Uniphase Corporation | Apparatus for orienting magnetic flakes |
US11230127B2 (en) | 2002-07-15 | 2022-01-25 | Viavi Solutions Inc. | Method and apparatus for orienting magnetic flakes |
US20100208351A1 (en) * | 2002-07-15 | 2010-08-19 | Nofi Michael R | Selective and oriented assembly of platelet materials and functional additives |
US9164575B2 (en) | 2002-09-13 | 2015-10-20 | Jds Uniphase Corporation | Provision of frames or borders around pigment flakes for covert security applications |
US8025952B2 (en) | 2002-09-13 | 2011-09-27 | Jds Uniphase Corporation | Printed magnetic ink overt security image |
US9458324B2 (en) | 2002-09-13 | 2016-10-04 | Viava Solutions Inc. | Flakes with undulate borders and method of forming thereof |
US20080236447A1 (en) * | 2002-09-13 | 2008-10-02 | Jds Uniphase Corporation | Flake For Covert Security Applications |
US8323542B2 (en) * | 2009-11-03 | 2012-12-04 | Jds Uniphase Corporation | Substrate and method of manufacturing polygon flakes |
US7645510B2 (en) | 2002-09-13 | 2010-01-12 | Jds Uniphase Corporation | Provision of frames or borders around opaque flakes for covert security applications |
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 |
US7550197B2 (en) * | 2003-08-14 | 2009-06-23 | Jds Uniphase Corporation | Non-toxic flakes for authentication of pharmaceutical articles |
US20050123764A1 (en) * | 2003-12-05 | 2005-06-09 | Hoffmann Rene C. | Markable powder and interference pigment containing coatings |
US7285329B2 (en) * | 2004-02-18 | 2007-10-23 | Hitachi Metals, Ltd. | Fine composite metal particles and their production method, micro-bodies, and magnetic beads |
DE102004040444A1 (de) * | 2004-08-19 | 2006-03-02 | Eckart Gmbh & Co. Kg | Elektrisch leitfähige Pigmente mit ferromagnetischem Kern, deren Herstellung und Verwendung |
US7879209B2 (en) * | 2004-08-20 | 2011-02-01 | Jds Uniphase Corporation | Cathode for sputter coating |
US20060049041A1 (en) * | 2004-08-20 | 2006-03-09 | Jds Uniphase Corporation | Anode for sputter coating |
US8500973B2 (en) | 2004-08-20 | 2013-08-06 | Jds Uniphase Corporation | Anode for sputter coating |
US7676066B2 (en) * | 2004-11-18 | 2010-03-09 | Microsoft Corporation | System and method for selectively encoding a symbol code in a color space |
TWI391249B (zh) * | 2004-12-22 | 2013-04-01 | Jds Uniphase Corp | 藉由定位可校準薄片而形成之動態影像 |
DE102004063217A1 (de) * | 2004-12-29 | 2006-07-13 | Giesecke & Devrient Gmbh | Sicherheitsmerkmal für Wertdokumente |
US7122837B2 (en) * | 2005-01-11 | 2006-10-17 | Apollo Diamond, Inc | Structures formed in diamond |
US20060202469A1 (en) * | 2005-03-10 | 2006-09-14 | Neil Teitelbaum | Financial instrument having indicia related to a security feature thereon |
US7588817B2 (en) * | 2005-03-11 | 2009-09-15 | Jds Uniphase Corporation | Engraved optically variable image device |
CA2537732A1 (en) * | 2005-04-06 | 2006-10-06 | Jds Uniphase Corporation | High chroma optically variable colour-shifting glitter |
CA2541568C (en) | 2005-04-06 | 2014-05-13 | Jds Uniphase Corporation | Dynamic appearance-changing optical devices (dacod) printed in a shaped magnetic field including printable fresnel structures |
AU2006202315B2 (en) * | 2005-06-17 | 2011-01-27 | Viavi Solutions Inc. | Covert security coating |
ITMI20051944A1 (it) * | 2005-10-14 | 2007-04-15 | Fabriano Securities Srl | Elemento di sicurezza per banconote o documenti rappresentanti un valore |
JP5259946B2 (ja) * | 2005-11-18 | 2013-08-07 | ジェイディーエス ユニフェイズ コーポレーション | 光学効果の印刷のための磁性板 |
AU2006249295A1 (en) * | 2005-12-15 | 2007-07-05 | Jds Uniphase Corporation | Security device with metameric features using diffractive pigment flakes |
US10343436B2 (en) | 2006-02-27 | 2019-07-09 | Viavi Solutions Inc. | Security device formed by printing with special effect inks |
CA2580321C (en) * | 2006-03-06 | 2014-11-04 | Jds Uniphase Corporation | Security devices incorporating optically variable adhesive |
AU2007202166A1 (en) * | 2006-05-19 | 2007-12-06 | Jds Uniphase Corporation | Heating magnetically orientable pigment in a printing process |
EP2036635B1 (de) * | 2006-06-20 | 2015-09-02 | Hitachi Metals, Ltd. | Metallteilchen, magnetisches kügelchen zur extraktion biologischer substanzen und herstellungsverfahren dafür |
CA2592667C (en) | 2006-07-12 | 2014-05-13 | Jds Uniphase Corporation | Stamping a coating of cured field aligned special effect flakes and image formed thereby |
CA2598007A1 (en) * | 2006-08-29 | 2008-02-29 | Jds Uniphase Corporation | Printed article with special effect coating |
JP4941870B2 (ja) | 2006-10-17 | 2012-05-30 | エス・アイ・シー・ピー・エイ・ホールディング・ソシエテ・アノニム | 磁性粒子を含有するコーティングにおいて磁気誘導されたしるしを作成するための方法および手段 |
CA2613830A1 (en) * | 2006-12-15 | 2008-06-15 | Alberto Argoitia | An article with micro indicia security enhancement |
US8979678B2 (en) * | 2007-02-16 | 2015-03-17 | Acushnet Company | Color golf ball |
EP1961559A1 (de) | 2007-02-20 | 2008-08-27 | Kba-Giori S.A. | Zylinderkörper zur Ausrichtung von Magnetspänen eines auf einem blatt- oder bahnförmigen Substrat aufgetragenen Tinten- oder Lackbindemittels |
AU2008201211B2 (en) * | 2007-03-21 | 2013-09-26 | Viavi Solutions Inc. | A surface treated flake |
CA2627143A1 (en) * | 2007-04-04 | 2008-10-04 | Jds Uniphase Corporation | Three-dimensional orientation of grated flakes |
CA2629159A1 (en) * | 2007-04-23 | 2008-10-23 | Jds Uniphase Corporation | A method of recording machine-readable information |
AU2008201903B2 (en) * | 2007-05-07 | 2013-03-28 | Viavi Solutions Inc. | Structured surfaces that exhibit color by rotation |
KR101513287B1 (ko) * | 2007-05-07 | 2015-04-22 | 제이디에스 유니페이즈 코포레이션 | 회전에 따른 색을 보여주는 구조화된 표면들 |
KR100868260B1 (ko) | 2007-10-31 | 2008-11-12 | 삼성전기주식회사 | 브라켓 및 이를 구비한 월 마운트 |
US20090165369A1 (en) * | 2007-11-16 | 2009-07-02 | Claudia Catalina Luhrs | Methods and compositions for multi-layer nanoparticles |
KR100965736B1 (ko) * | 2007-12-11 | 2010-06-24 | 삼화페인트 공업주식회사 | 프리 코팅용 도료 조성물 |
JP2009193069A (ja) | 2008-02-13 | 2009-08-27 | Jds Uniphase Corp | 光学的な特殊効果フレークを含むレーザ印刷用の媒体 |
US20140154808A1 (en) * | 2012-12-03 | 2014-06-05 | Gordhanbhai N. Patel | Monitoring system based on etching of metals |
DE102008032224A1 (de) * | 2008-07-09 | 2010-01-14 | Giesecke & Devrient Gmbh | Sicherheitselement |
CN101716837A (zh) * | 2008-10-09 | 2010-06-02 | 鸿富锦精密工业(深圳)有限公司 | 膜层结构及使用该膜层结构的电子装置壳体 |
CN101735678B (zh) * | 2008-11-21 | 2013-01-09 | 鸿富锦精密工业(深圳)有限公司 | 彩色涂层及采用其的电子产品 |
EP2445972B1 (de) * | 2009-06-26 | 2018-07-18 | Merck Patent GmbH | Magnetische pigmente mit plättchenförmigem substrat und einer maghemitschicht |
US20110091691A1 (en) * | 2009-10-16 | 2011-04-21 | Vacumet Corp. | Multiple layer holographic metal flake film and method of manufacturing the same |
GB201001603D0 (en) | 2010-02-01 | 2010-03-17 | Rue De Int Ltd | Security elements, and methods and apparatus for their manufacture |
KR101131143B1 (ko) * | 2010-02-02 | 2012-04-03 | 한국조폐공사 | 위조방지용 또는 진위식별용 용지 |
ITTO20100391A1 (it) * | 2010-05-11 | 2011-11-12 | Finmeccanica Societa Per Azioni | Metodo di realizzazione di una vernice atta a modificare l'emissione infrarossa di una superficie |
US8895962B2 (en) * | 2010-06-29 | 2014-11-25 | Nanogram Corporation | Silicon/germanium nanoparticle inks, laser pyrolysis reactors for the synthesis of nanoparticles and associated methods |
US20120001116A1 (en) * | 2010-06-30 | 2012-01-05 | Jds Uniphase Corporation | Magnetic multilayer pigment flake and coating composition |
WO2012038531A1 (en) | 2010-09-24 | 2012-03-29 | Sicpa Holding Sa | Device, system and method for producing a magnetically induced visual effect |
ES2623162T3 (es) | 2010-09-24 | 2017-07-10 | Kba-Notasys Sa | Prensa de impresión alimentada con láminas y método para orientar escamas magnéticas contenidas en un vehículo de tinta o barniz aplicado sobre un sustrato en forma de lámina |
CN102448264A (zh) * | 2010-10-14 | 2012-05-09 | 鸿富锦精密工业(深圳)有限公司 | 光致发光薄膜、壳体及壳体的制作方法 |
WO2013019544A1 (en) * | 2011-07-29 | 2013-02-07 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Universal shaft for magnetic manipulation of catheters |
CN103827038B (zh) | 2011-09-26 | 2016-05-11 | 三菱瓦斯化学株式会社 | 钼化合物粉体、预浸料以及层叠板 |
KR200464899Y1 (ko) | 2011-11-15 | 2013-01-22 | 임무화 | 자성물감을 이용한 유아용 문자 교습구 |
MX340221B (es) | 2012-01-12 | 2016-07-01 | Viavi Solutions Inc | Articulo con patrones curvos formados de hojuelas de pigmento alineadas. |
CN102642419B (zh) * | 2012-04-11 | 2014-10-08 | 惠州市华阳光学技术有限公司 | 印刷磁定向母版的制造方法 |
MA37495B1 (fr) | 2012-05-07 | 2018-08-31 | Sicpa Holding Sa | Couche à effet optique |
US9495129B2 (en) | 2012-06-29 | 2016-11-15 | Apple Inc. | Device, method, and user interface for voice-activated navigation and browsing of a document |
CA2877108A1 (en) * | 2012-07-03 | 2014-01-09 | Sicpa Holding Sa | Capsule or cork comprising security features |
FR2994890B1 (fr) | 2012-09-04 | 2014-09-12 | Oberthur Fiduciaire Sas | Cylindre de transfert de feuilles et ensemble constitue d'une juxtaposition de tels cylindres |
EP2916968B1 (de) | 2012-11-09 | 2018-10-03 | Sicpa Holding Sa | Nichtumkehrbare magnetisch induzierte bilder oder muster |
CN103087555B (zh) * | 2012-12-11 | 2014-12-03 | 中钞油墨有限公司 | 具有防伪功能的微结构金属颜料及其制备方法 |
CN102994667B (zh) * | 2012-12-13 | 2014-07-02 | 吴江华诚复合材料科技有限公司 | 一种手感效果优异的皮革消光剂 |
BR112015011390B1 (pt) | 2013-01-09 | 2021-06-22 | Sicpa Holding Sa | Camada de efeito óptico (oel), uso e processo para a produção da mesma, substrato revestido de camada de efeito óptico, dispositivo gerador de campo magnético, uso do mesmo, conjunto de impressão e documento de segurança |
TW201431616A (zh) | 2013-01-09 | 2014-08-16 | Sicpa Holding Sa | 顯示取決於視角的光學效應之光學效應層;用於其生產之工藝和裝置;攜帶光學效應層之物品;及其用途 |
CA2897554A1 (en) * | 2013-03-01 | 2014-09-04 | Sicpa Holding Sa | Intaglio printing |
CN108790388B (zh) | 2013-03-27 | 2021-06-04 | 唯亚威通讯技术有限公司 | 具有虚幻光学效应的光学装置及其制造方法 |
RU2649547C2 (ru) | 2013-05-02 | 2018-04-03 | Сикпа Холдинг Са | Способы производства защитных нитей или полосок |
KR101341164B1 (ko) * | 2013-05-16 | 2013-12-13 | (주)티엔에프 | 보안용 기록매체 |
US9482800B2 (en) | 2013-06-10 | 2016-11-01 | Viavi Solutions Inc. | Durable optical interference pigment with a bimetal core |
WO2014198530A1 (en) | 2013-06-12 | 2014-12-18 | Sicpa Holding Sa | Heat sensitive tamper indicating markings |
BR112015031227B1 (pt) | 2013-06-14 | 2022-03-08 | Sicpa Holding Sa | Dispositivo gerador de campo magnético e seu uso, conjunto de impressão e processo para produzir uma camada de efeito óptico |
CN103464093B (zh) * | 2013-09-22 | 2015-03-11 | 南京理工大学 | CoFe2O4@MCM-41复合材料、制备方法及其对放射性废水的吸附 |
FR3012367A1 (fr) | 2013-10-31 | 2015-05-01 | Arjowiggins Security | Document securise et pigment. |
IN2014MU03621A (de) * | 2013-11-18 | 2015-10-09 | Jds Uniphase Corp | |
EP3079916B1 (de) | 2013-12-11 | 2018-10-31 | Sicpa Holding SA | Optisch variable sicherheitsfäden und -streifen und verfahren zur herstellung derselben |
CN105980162B (zh) | 2014-02-13 | 2017-09-22 | 锡克拜控股有限公司 | 安全线和条 |
TW201605655A (zh) | 2014-07-29 | 2016-02-16 | 西克帕控股有限公司 | 用於由磁場產生裝置產生凹形磁力線所製成之光學效果層之場內硬化之方法 |
US20160133486A1 (en) * | 2014-11-07 | 2016-05-12 | International Business Machines Corporation | Double Layer Release Temporary Bond and Debond Processes and Systems |
CA2968297C (en) | 2015-01-30 | 2023-07-25 | Sicpa Holding Sa | Simultaneous authentication of a security article and identification of the security article user |
WO2016120383A1 (en) | 2015-01-30 | 2016-08-04 | Sicpa Holding Sa | Simultaneous authentication of a security article and identification of the security article user |
KR101968215B1 (ko) * | 2015-03-16 | 2019-04-11 | 주식회사 엘지화학 | 전도성 구조체 및 이를 포함하는 전자 소자 |
TW201636901A (zh) | 2015-04-10 | 2016-10-16 | 西克帕控股有限公司 | 用於驗證安全物品之行動攜帶型設備及操作攜帶型驗證設備之方法 |
TW201703879A (zh) | 2015-06-02 | 2017-02-01 | 西克帕控股有限公司 | 用於生產光學效應層之製程 |
CN107533815A (zh) | 2015-07-01 | 2018-01-02 | 锡克拜控股有限公司 | 邮票 |
US10252563B2 (en) | 2015-07-13 | 2019-04-09 | Wavefront Technology, Inc. | Optical products, masters for fabricating optical products, and methods for manufacturing masters and optical products |
TWI709626B (zh) | 2015-10-15 | 2020-11-11 | 瑞士商西克帕控股有限公司 | 用於製造包含定向非球面磁性或可磁化顏料顆粒的光學效應層之磁性組件與製程 |
EP3374093B1 (de) | 2015-11-10 | 2019-10-30 | Sicpa Holding SA | Vorrichtungen und verfahren zur herstellung optischer effektschichten mit ausgerichteten asphärischen magnetischen oder magnetisierbaren pigmentpartikeln |
CN105385193A (zh) * | 2015-12-07 | 2016-03-09 | 李学英 | 可诱导式滤光颜料片及其制备方法 |
KR102289213B1 (ko) * | 2015-12-29 | 2021-08-13 | 한국조폐공사 | 보안잉크용 자성 입자 및 이를 포함하는 보안잉크 |
AR107681A1 (es) | 2016-02-29 | 2018-05-23 | Sicpa Holding Sa | Aparatos y procesos para producir capas con efecto óptico que comprenden partículas de pigmento no esféricas orientadas magnéticas, o magnetizables |
US11165067B2 (en) * | 2016-03-11 | 2021-11-02 | Honda Motor Co., Ltd. | Porous current collector and electrode for an electrochemical battery |
WO2017168443A1 (en) * | 2016-03-30 | 2017-10-05 | Saint-Gobain Glass France | Magnetic glass member |
KR102380813B1 (ko) | 2016-04-22 | 2022-03-30 | 웨이브프론트 테크놀로지, 인코퍼레이티드 | 광 스위치 장치 |
US11113919B2 (en) | 2017-10-20 | 2021-09-07 | Wavefront Technology, Inc. | Optical switch devices |
EP3178569A1 (de) | 2016-06-29 | 2017-06-14 | Sicpa Holding Sa | Verfahren und vorrichtungen zur erzeugung optischer effektschichten mit einer photomaske |
EP3515609B1 (de) | 2016-09-22 | 2020-11-04 | Sicpa Holding Sa | Vorrichtungen und verfahren zur herstellung optischer effektschichten mit ausgerichteten asphärischen magnetischen oder magnetisierbaren pigmentpartikeln |
CN107219567B (zh) * | 2017-06-21 | 2019-06-28 | 北京富兴凯永兴光电技术有限公司 | 一种成膜均匀的低折射率光学镀膜材料及制备方法 |
EP3638741B1 (de) | 2017-06-26 | 2022-06-15 | Sicpa Holding Sa | Drucken von sicherheitsmerkmalen |
CN107383943B (zh) * | 2017-08-09 | 2019-04-02 | 长沙族兴新材料股份有限公司 | 具有包覆层的水性铝银浆及其制备方法 |
TWI780201B (zh) | 2017-08-25 | 2022-10-11 | 瑞士商西克帕控股有限公司 | 光學效果層及其使用方法、包括此光學效果層的安全性文件或裝飾構件、及用於產生此光學效果層的裝置及進程 |
TWI773805B (zh) | 2017-08-25 | 2022-08-11 | 瑞士商西克帕控股有限公司 | 用於產生包括經定向非球面扁球狀的磁性或可磁化顏料粒子的光學效果層的組件及進程 |
TWI768096B (zh) | 2017-08-25 | 2022-06-21 | 瑞士商西克帕控股有限公司 | 光學效果層、用於產生此光學效果層的裝置及進程、及此裝置的使用方法 |
BR112020003100A2 (pt) | 2017-10-05 | 2020-09-01 | Wavefront Technology, Inc. | estruturas ópticas que fornecem efeitos dicroicos |
US10899930B2 (en) * | 2017-11-21 | 2021-01-26 | Viavi Solutions Inc. | Asymmetric pigment |
KR102071444B1 (ko) * | 2017-12-29 | 2020-03-02 | 한국조폐공사 | 형광 물질을 포함한 마이크로캡슐 |
WO2019215148A1 (en) | 2018-05-08 | 2019-11-14 | Sicpa Holding Sa | Magnetic assemblies, apparatuses and processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles |
JP2020003789A (ja) * | 2018-06-29 | 2020-01-09 | ヴァイアヴィ・ソリューションズ・インコーポレイテッドViavi Solutions Inc. | 非対称層構造を有する光学デバイス |
US20200002542A1 (en) * | 2018-06-29 | 2020-01-02 | Viavi Solutions Inc. | Composition including reflective particles |
US20200004100A1 (en) * | 2018-06-29 | 2020-01-02 | Viavi Solutions Inc. | Optical devices with functional molecules |
CN108922776A (zh) * | 2018-07-10 | 2018-11-30 | 广东晟铂纳新材料科技有限公司 | 一种多层磁性薄膜颜料片及其制备方法 |
TWI829734B (zh) | 2018-09-10 | 2024-01-21 | 瑞士商西克帕控股有限公司 | 光學效應層、生產其之製程、及包含其之安全文件、裝飾元件及物件 |
CN110128873B (zh) * | 2018-09-12 | 2022-03-15 | 惠州市崯涛新材料科技有限公司 | 黑金刚镜面银颜料及其制造方法 |
WO2020148076A1 (en) | 2019-01-15 | 2020-07-23 | Sicpa Holding Sa | Process for producing optical effect layers |
US20220134794A1 (en) | 2019-02-08 | 2022-05-05 | Sicpa Holding Sa | Magnetic assemblies and processes for producing optical effect layers comprising oriented non-spherical oblate magnetic or magnetizable pigment particles |
EP3928133A4 (de) * | 2019-02-21 | 2022-12-07 | Viavi Solutions Inc. | Artikel mit einer farbabstimmungsschicht |
JP7426002B2 (ja) | 2019-02-28 | 2024-02-01 | シクパ ホルディング ソシエテ アノニム | 検証可能アクセス資格証明 |
JP7387961B2 (ja) | 2019-03-28 | 2023-11-29 | シクパ ホルディング ソシエテ アノニム | 配向非球状磁性又は磁化可能顔料粒子を含む光学効果層を生成するための磁気アセンブリ及びプロセス |
WO2020205053A1 (en) * | 2019-04-04 | 2020-10-08 | Wavefront Technology, Inc. | Optical structures providing dichroic effects |
CN110109206A (zh) * | 2019-04-09 | 2019-08-09 | 甄欣 | 一种可诱导滤光颜料 |
CN110204925A (zh) * | 2019-05-30 | 2019-09-06 | 惠州市华阳光学技术有限公司 | 一种高色度磁性颜料片及其制备方法 |
CN110193976A (zh) * | 2019-05-30 | 2019-09-03 | 惠州市华阳光学技术有限公司 | 一种磁性颜料片 |
KR102274099B1 (ko) * | 2019-06-19 | 2021-07-07 | 한국조폐공사 | 마이크로캡슐을 이용한 보안 요소 |
HUE062652T2 (hu) | 2019-07-30 | 2023-11-28 | Sicpa Holding Sa | Sugárzással kezelhetõ mélynyomó festékek |
CN110669360A (zh) * | 2019-08-30 | 2020-01-10 | 惠州市华阳光学技术有限公司 | 一种复合色颜料片及其制备方法 |
CA3159077A1 (en) | 2019-10-28 | 2021-05-06 | Sicpa Holding Sa | Magnetic assemblies and processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles |
ES2961414T3 (es) | 2019-10-28 | 2024-03-11 | Sicpa Holding Sa | Conjuntos magnéticos y procesos para producir capas de efecto óptico que comprenden partículas de pigmento magnéticas o magnetizables, no esféricas y orientadas |
DE102019008288A1 (de) * | 2019-11-27 | 2021-05-27 | Giesecke+Devrient Currency Technology Gmbh | Effektpigment, Herstellungsverfahren, Wertdokument und Druckfarbe |
CN111073355A (zh) * | 2019-12-26 | 2020-04-28 | 河南兴安新型建筑材料有限公司 | 一种彩色Al粉颜料的制备方法 |
CN113050206B (zh) * | 2019-12-28 | 2023-03-24 | 惠州市华阳光学技术有限公司 | 光致变色材料 |
CN111171600A (zh) * | 2020-01-06 | 2020-05-19 | 惠州市华阳光学技术有限公司 | 光变颜料片 |
CN111534129A (zh) * | 2020-04-07 | 2020-08-14 | 惠州市华阳光学技术有限公司 | 一种复合色颜料片及其制备方法 |
CN112708288A (zh) * | 2020-05-21 | 2021-04-27 | 厦门大学 | 一种磁性结构色薄膜 |
CN111709507B (zh) * | 2020-06-14 | 2021-09-28 | 北京化工大学 | 可信息编码的多层色码微标记物及制备方法 |
CN111574860A (zh) * | 2020-06-17 | 2020-08-25 | 惠州市华阳光学技术有限公司 | 金属颜料片和金属色油墨 |
US11754759B2 (en) * | 2020-09-24 | 2023-09-12 | Apple Inc. | Electronic devices having optical diffusers for optical components |
EP3978573A1 (de) | 2020-09-30 | 2022-04-06 | Andres Ruiz Quevedo | V-förmige (nicht planare), magnetische effekt-pigmente |
WO2022077012A1 (en) * | 2020-10-07 | 2022-04-14 | Wavefront Technology, Inc. | Optical products, masters for fabricating optical products, and methods for manufacturing masters and optical products |
CN114815006A (zh) * | 2021-01-19 | 2022-07-29 | 惠州市华阳光学技术有限公司 | 一种动态放大的光致变色薄膜 |
CN114806219A (zh) * | 2021-01-29 | 2022-07-29 | 惠州市华阳光学技术有限公司 | 一种无色移颜料及其制备方法 |
CN114958077B (zh) * | 2021-02-24 | 2023-04-25 | 惠州市华阳光学技术有限公司 | 磁性颜料片、光变油墨和防伪制品 |
CN112987158B (zh) * | 2021-04-09 | 2022-03-18 | 广东晟铂纳新材料科技有限公司 | 一种铁基光变颜料及其制造方法和应用 |
CN113562330A (zh) * | 2021-07-05 | 2021-10-29 | 北京工业大学 | 一种饱和度可调的炫彩包装薄膜及其制备方法 |
CN113947173B (zh) * | 2021-09-08 | 2023-09-15 | 中钞特种防伪科技有限公司 | 一种磁性光学防伪元件及使用该防伪元件的防伪产品 |
CN114664171A (zh) * | 2022-02-22 | 2022-06-24 | 惠州市华阳光学技术有限公司 | 一种磁性红外防伪颜料 |
EP4338854A2 (de) | 2023-12-20 | 2024-03-20 | Sicpa Holding SA | Verfahren zur herstellung von schichten mit optischen effekten |
Family Cites Families (93)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2570856A (en) | 1947-03-25 | 1951-10-09 | Du Pont | Process for obtaining pigmented films |
US3011383A (en) | 1957-04-30 | 1961-12-05 | Carpenter L E Co | Decorative optical material |
IT938725B (it) | 1970-11-07 | 1973-02-10 | Magnetfab Bonn Gmbh | Procedimento e dispositivo per otte nere disegni in strati superficiali per mezzo di campi magnetici |
DE2313331C2 (de) | 1973-03-17 | 1986-11-13 | Merck Patent Gmbh, 6100 Darmstadt | Eisenoxidhaltige Glimmerschuppenpigmente |
US4105572A (en) | 1976-03-31 | 1978-08-08 | E. I. Du Pont De Nemours And Company | Ferromagnetic toner containing water-soluble or water-solubilizable resin(s) |
US4323904A (en) | 1977-03-15 | 1982-04-06 | E. I. Du Pont De Nemours And Company | Magnetic printing process and apparatus |
DE2839658A1 (de) | 1978-09-12 | 1980-03-20 | Agfa Gevaert Ag | Aufzeichnungstraeger |
US5569535A (en) | 1979-12-28 | 1996-10-29 | Flex Products, Inc. | High chroma multilayer interference platelets |
US4434010A (en) | 1979-12-28 | 1984-02-28 | Optical Coating Laboratory, Inc. | Article and method for forming thin film flakes and coatings |
US5059245A (en) | 1979-12-28 | 1991-10-22 | Flex Products, Inc. | Ink incorporating optically variable thin film flakes |
US5084351A (en) | 1979-12-28 | 1992-01-28 | Flex Products, Inc. | Optically variable multilayer thin film interference stack on flexible insoluble web |
US5171363A (en) | 1979-12-28 | 1992-12-15 | Flex Products, Inc. | Optically variable printing ink |
US5135812A (en) | 1979-12-28 | 1992-08-04 | Flex Products, Inc. | Optically variable thin film flake and collection of the same |
US5766738A (en) | 1979-12-28 | 1998-06-16 | Flex Products, Inc. | Paired optically variable article with paired optically variable structures and ink, paint and foil incorporating the same and method |
JPS56130469A (en) | 1980-03-17 | 1981-10-13 | Sanyo Shinku Kogyo Kk | Manufacture of fine grain for decoration |
JPS5897132A (ja) | 1981-12-07 | 1983-06-09 | Fuji Photo Film Co Ltd | 磁気記録材料の製造方法 |
DE3237264A1 (de) | 1982-10-08 | 1984-04-12 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von mit metalloxid beschichteten effektpigmenten |
CA1232068A (en) | 1984-06-08 | 1988-01-26 | National Research Council Of Canada | Form depicting, optical interference authenticating device |
US4705356A (en) | 1984-07-13 | 1987-11-10 | Optical Coating Laboratory, Inc. | Thin film optical variable article having substantial color shift with angle and method |
US4705300A (en) | 1984-07-13 | 1987-11-10 | Optical Coating Laboratory, Inc. | Thin film optically variable article and method having gold to green color shift for currency authentication |
DE3500079A1 (de) | 1985-01-03 | 1986-07-10 | Henkel KGaA, 4000 Düsseldorf | Mittel und verfahren zur erzeugung farbloser verdichtungsschichten auf anodisierten aluminiumoberflaechen |
NZ218573A (en) * | 1985-12-23 | 1989-11-28 | Optical Coating Laboratory Inc | Optically variable inks containing flakes |
US4911947A (en) | 1986-02-03 | 1990-03-27 | Massachusetts Institute Of Technology | Method for inducing color shift in metallic paints |
US4721217A (en) | 1986-08-07 | 1988-01-26 | Optical Coating Laboratory, Inc. | Tamper evident optically variable device and article utilizing the same |
US4930866A (en) | 1986-11-21 | 1990-06-05 | Flex Products, Inc. | Thin film optical variable article and method having gold to green color shift for currency authentication |
US4779898A (en) | 1986-11-21 | 1988-10-25 | Optical Coating Laboratory, Inc. | Thin film optically variable article and method having gold to green color shift for currency authentication |
JPH01147065A (ja) | 1987-12-02 | 1989-06-08 | Ulvac Corp | 粉末への被膜形成方法 |
US4859495A (en) | 1988-03-15 | 1989-08-22 | Eastman Kodak Co. | Method of preparing perpendicularly oriented magnetic recording media |
DE3813335A1 (de) | 1988-04-21 | 1989-11-02 | Basf Ag | Metalloxidbeschichtete aluminiumpigmente |
US4838648A (en) * | 1988-05-03 | 1989-06-13 | Optical Coating Laboratory, Inc. | Thin film structure having magnetic and color shifting properties |
US5002312A (en) | 1988-05-03 | 1991-03-26 | Flex Products, Inc. | Pre-imaged high resolution hot stamp transfer foil, article and method |
DE3825702A1 (de) | 1988-07-28 | 1990-02-01 | Michael Huber Muenchen Gmbh Fa | Goniochromatische pigmente, verfahren zu deren herstellung und deren verwendung zur herstellung von sicherheits- und effektfarben |
ATE112586T1 (de) | 1989-02-13 | 1994-10-15 | Akzo Nobel Nv | Flüssigkristallpigment, methode zur herstellung und verwendung in bekleidungen. |
US5278590A (en) | 1989-04-26 | 1994-01-11 | Flex Products, Inc. | Transparent optically variable device |
DE3938055A1 (de) | 1989-11-16 | 1991-05-23 | Merck Patent Gmbh | Mit plaettchenfoermigen pigmenten beschichtete materialien |
US5214530A (en) | 1990-08-16 | 1993-05-25 | Flex Products, Inc. | Optically variable interference device with peak suppression and method |
US5830567A (en) | 1990-09-19 | 1998-11-03 | Basf Corporation | Non-metallic coating compositions containing very fine mica |
US5217804A (en) | 1990-11-06 | 1993-06-08 | Eastman Kodak Company | Magnetic particles |
DE4104310A1 (de) * | 1991-02-13 | 1992-08-20 | Merck Patent Gmbh | Plaettchenfoermiges pigment |
JPH04336749A (ja) | 1991-05-13 | 1992-11-24 | Canon Inc | ファクシミリ装置 |
DE69218582T2 (de) | 1992-02-21 | 1997-07-10 | Hashimoto Forming Kogyo Co | Lackierung mit magnetisch hergestelltem Muster und lackiertes Produkt mit magnetisch hergestelltem Muster |
US5672410A (en) | 1992-05-11 | 1997-09-30 | Avery Dennison Corporation | Embossed metallic leafing pigments |
US5549774A (en) | 1992-05-11 | 1996-08-27 | Avery Dennison Corporation | Method of enhancing the visibility of diffraction pattern surface embossment |
US5364315A (en) * | 1992-05-18 | 1994-11-15 | Mitsuboshi Belting Ltd. | V-ribbed belt |
DE4217511A1 (de) | 1992-05-27 | 1993-12-02 | Basf Ag | Glanzpigmente auf der Basis von mehrfach beschichteten plättchenförmigen metallischen Substraten |
ATE146509T1 (de) | 1992-07-23 | 1997-01-15 | Silberline Ltd | Metallpulverpigment |
DE4227082A1 (de) | 1992-08-17 | 1994-02-24 | Merck Patent Gmbh | Pigmente mit dunkler Körperfarbe |
DE4240743A1 (de) | 1992-12-03 | 1994-06-09 | Consortium Elektrochem Ind | Pigmente mit vom Betrachtungswinkel abhängiger Farbigkeit, ihre Herstellung und Verwendung |
DE4241753A1 (de) | 1992-12-11 | 1994-06-16 | Basf Ag | Verwendung von Interferenzpigmenten zur Herstellung von fälschungssicheren Wertschriften |
JP3032927B2 (ja) * | 1993-02-05 | 2000-04-17 | 日鉄鉱業株式会社 | 表面に金属酸化物膜を有する金属又は金属化合物粉体 |
DE4313541A1 (de) | 1993-04-24 | 1994-10-27 | Basf Ag | Magnetisierbare Glanzpigmente |
US5549953A (en) | 1993-04-29 | 1996-08-27 | National Research Council Of Canada | Optical recording media having optically-variable security properties |
DE4340141A1 (de) * | 1993-11-25 | 1995-06-01 | Basf Ag | Magnetisierbare Glanzpigmente |
US5424119A (en) * | 1994-02-04 | 1995-06-13 | Flex Products, Inc. | Polymeric sheet having oriented multilayer interference thin film flakes therein, product using the same and method |
DE4405492A1 (de) | 1994-02-21 | 1995-08-24 | Basf Ag | Mehrfach beschichtete metallische Glanzpigmente |
DE4418075C2 (de) | 1994-05-24 | 2000-06-29 | Daimler Chrysler Ag | Effektlack bzw. Effektlackierung, insbesondere für Fahrzeugkarosserien, unter Verwendung von flüssigkristallinen Interferenzpigmenten |
US5824733A (en) | 1994-04-30 | 1998-10-20 | Wacker-Chemie Gmbh | Aqueous coating product and a process for producing multiple layer paint coatings whose perceived color varies with the angle from which they are viewed |
DE4419173A1 (de) | 1994-06-01 | 1995-12-07 | Basf Ag | Magnetisierbare mehrfach beschichtete metallische Glanzpigmente |
DE4419239A1 (de) | 1994-06-01 | 1995-12-07 | Consortium Elektrochem Ind | Optische Elemente mit farb- und polarisationsselektiver Reflexion enthaltend LC-Pigmente sowie Herstellung dieser Elemente |
US5766355A (en) * | 1994-09-28 | 1998-06-16 | Abb Flexible Automation Inc. | Exhaust arrangements for powder spray booth |
JP3435840B2 (ja) * | 1994-09-29 | 2003-08-11 | 凸版印刷株式会社 | 偽造防止用光学干渉膜 |
DE4437753A1 (de) | 1994-10-21 | 1996-04-25 | Basf Ag | Mehrfach beschichtete metallische Glanzpigmente |
DE4439455A1 (de) | 1994-11-04 | 1996-05-09 | Basf Ag | Verfahren zur Herstellung von dreidimensionale optische Effekte aufweisenden Beschichtungen |
DE19501307C2 (de) | 1995-01-18 | 1999-11-11 | Eckart Standard Bronzepulver | Farbige Aluminiumpigmente, Verfahren zu deren Herstellung sowie deren Verwendung |
DE19505161A1 (de) | 1995-02-16 | 1996-08-22 | Daimler Benz Ag | Effektlack bzw. Effektlackierung, insbesondere für Kraftfahrzeugkarosserien |
US5877895A (en) | 1995-03-20 | 1999-03-02 | Catalina Coatings, Inc. | Multicolor interference coating |
DE19515988A1 (de) * | 1995-05-02 | 1996-11-07 | Basf Ag | Goniochromatische Glanzpigmente mit metallsulfidhaltiger Beschichtung |
JPH08333602A (ja) | 1995-06-05 | 1996-12-17 | Toyo Alum Kk | 着色チタンフレーク、その製造方法および着色チタンフレークを含む樹脂組成物 |
DE19538295A1 (de) | 1995-10-14 | 1997-04-17 | Basf Ag | Goniochromatische Glanzpigmente mit siliciumhaltiger Beschichtung |
DE19548528A1 (de) * | 1995-12-22 | 1997-06-26 | Giesecke & Devrient Gmbh | Sicherheitsdokument mit einem Sicherheitselement und Verfahren zu dessen Herstellung |
DE59704636D1 (de) * | 1996-04-25 | 2001-10-25 | Ciba Sc Holding Ag | Farbige Glanzpigmente |
DE19618564A1 (de) | 1996-05-09 | 1997-11-13 | Merck Patent Gmbh | Plättchenförmiges Titandioxidpigment |
DE19629761A1 (de) | 1996-07-23 | 1997-06-05 | Wacker Chemie Gmbh | Zubereitungen mit vom Betrachtungswinkel abhängiger Farbigkeit |
WO1998007792A1 (fr) * | 1996-08-22 | 1998-02-26 | Nittetsu Mining Co., Ltd. | Composition d'une matiere colorante |
JPH10147065A (ja) | 1996-11-15 | 1998-06-02 | Dainippon Printing Co Ltd | 磁気記録媒体およびその製造方法 |
DE19731968A1 (de) * | 1997-07-24 | 1999-01-28 | Giesecke & Devrient Gmbh | Sicherheitsdokument |
US6103361A (en) | 1997-09-08 | 2000-08-15 | E. I. Du Pont De Nemours And Company | Patterned release finish |
EP0927749B1 (de) | 1997-12-29 | 2003-02-26 | Sicpa Holding S.A. | Überzugszusammensetzung, Verwendung von Teilchen, Verfahren zur Markierung und Identifizierung eines diese Überzugszusammensetzung enthaltenden Sicherheitsdokumentes |
US6013370A (en) | 1998-01-09 | 2000-01-11 | Flex Products, Inc. | Bright metal flake |
DE19817286A1 (de) * | 1998-04-18 | 1999-10-21 | Merck Patent Gmbh | Mehrschichtiges Perlglanzpigment auf Basis eines opaken Substrates |
US6157489A (en) | 1998-11-24 | 2000-12-05 | Flex Products, Inc. | Color shifting thin film pigments |
JP2000222615A (ja) * | 1998-11-27 | 2000-08-11 | Nittetsu Mining Co Ltd | 真偽判別方法、真偽判別対象物および真偽判別装置 |
US6150022A (en) | 1998-12-07 | 2000-11-21 | Flex Products, Inc. | Bright metal flake based pigments |
DE19907697A1 (de) * | 1999-02-23 | 2000-08-24 | Giesecke & Devrient Gmbh | Wertdokument |
GB9917442D0 (en) * | 1999-07-23 | 1999-09-29 | Rue De Int Ltd | Security device |
US6524381B1 (en) * | 2000-03-31 | 2003-02-25 | Flex Products, Inc. | Methods for producing enhanced interference pigments |
US6586098B1 (en) * | 2000-07-27 | 2003-07-01 | Flex Products, Inc. | Composite reflective flake based pigments comprising reflector layers on bothside of a support layer |
US6569529B1 (en) * | 2000-10-10 | 2003-05-27 | Flex Product, Inc. | Titanium-containing interference pigments and foils with color shifting properties |
US6565770B1 (en) * | 2000-11-17 | 2003-05-20 | Flex Products, Inc. | Color-shifting pigments and foils with luminescent coatings |
US6572784B1 (en) * | 2000-11-17 | 2003-06-03 | Flex Products, Inc. | Luminescent pigments and foils with color-shifting properties |
EP1239307A1 (de) | 2001-03-09 | 2002-09-11 | Sicpa Holding S.A. | Magnetische Dünnschicht-Interferenz-Vorrichtung |
DE10114445A1 (de) * | 2001-03-23 | 2002-09-26 | Eckart Standard Bronzepulver | Weicheisenpigmente |
JP2003286690A (ja) * | 2002-03-27 | 2003-10-10 | Nittetsu Mining Co Ltd | 着色物および着色方法 |
-
2001
- 2001-04-27 US US09/844,261 patent/US20020160194A1/en not_active Abandoned
-
2002
- 2002-01-16 WO PCT/US2002/001059 patent/WO2003000801A2/en active Application Filing
- 2002-01-16 EP EP07021052A patent/EP1921117B1/de not_active Expired - Lifetime
- 2002-01-16 KR KR1020077024997A patent/KR100856533B1/ko active IP Right Grant
- 2002-01-16 EP EP07021053.9A patent/EP1918333B1/de not_active Expired - Lifetime
- 2002-01-16 EP EP07021050.5A patent/EP1918331B1/de not_active Expired - Lifetime
- 2002-01-16 EP EP02765768A patent/EP1412432B1/de not_active Expired - Lifetime
- 2002-01-16 PT PT07021052T patent/PT1921117E/pt unknown
- 2002-01-16 AT AT02765768T patent/ATE557068T1/de active
- 2002-01-16 AT AT07021052T patent/ATE535578T1/de active
- 2002-01-16 ES ES07021052T patent/ES2377534T3/es not_active Expired - Lifetime
- 2002-01-16 KR KR1020037014038A patent/KR100915147B1/ko active IP Right Grant
- 2002-01-16 KR KR1020077024999A patent/KR100856430B1/ko active IP Right Grant
- 2002-01-16 JP JP2003507196A patent/JP4353792B2/ja not_active Expired - Lifetime
- 2002-01-16 AU AU2002329168A patent/AU2002329168A1/en not_active Abandoned
- 2002-01-16 EP EP07021054.7A patent/EP1918334B1/de not_active Expired - Lifetime
- 2002-01-16 ES ES02765768T patent/ES2386137T3/es not_active Expired - Lifetime
- 2002-01-16 DK DK07021052.1T patent/DK1921117T3/da active
- 2002-01-16 KR KR1020087018022A patent/KR100931623B1/ko active IP Right Grant
- 2002-01-16 KR KR1020077025000A patent/KR100856429B1/ko active IP Right Grant
- 2002-01-16 CN CN2006100770079A patent/CN1854204B/zh not_active Expired - Lifetime
- 2002-01-16 EP EP07021051.3A patent/EP1918332B1/de not_active Expired - Lifetime
- 2002-01-16 CN CNB028088328A patent/CN1288674C/zh not_active Expired - Lifetime
- 2002-01-16 KR KR1020077024998A patent/KR100856105B1/ko active IP Right Grant
-
2003
- 2003-02-07 US US10/360,964 patent/US6818299B2/en not_active Expired - Lifetime
- 2003-08-08 US US10/637,605 patent/US6838166B2/en not_active Expired - Lifetime
-
2007
- 2007-10-22 JP JP2007274512A patent/JP4937879B2/ja not_active Expired - Lifetime
- 2007-11-12 JP JP2007293763A patent/JP4863512B2/ja not_active Expired - Lifetime
-
2008
- 2008-12-25 JP JP2008331550A patent/JP5132540B2/ja not_active Expired - Lifetime
-
2012
- 2012-01-16 CY CY20121100043T patent/CY1112965T1/el unknown
Cited By (209)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6666991B1 (en) * | 1998-11-27 | 2003-12-23 | Nittetsu Mining Co., Ltd. | Fluorescent or phosphorescent composition |
US9662925B2 (en) * | 2001-07-31 | 2017-05-30 | Viavi Solutions Inc. | Anisotropic magnetic flakes |
US20090072185A1 (en) * | 2001-07-31 | 2009-03-19 | Jds Uniphase Corporation | Anisotropic Magnetic Flakes |
US7322530B2 (en) * | 2001-08-16 | 2008-01-29 | November Aktiengesellschaft Gesellschaft Fur Molekulare Medizin | Forgery-proof marking for objects and method for identifying such a marking |
US20050001038A1 (en) * | 2001-08-16 | 2005-01-06 | Harald Walter | Forgery-proof marking for objects and method for identifying such a marking |
US7611168B2 (en) * | 2002-02-22 | 2009-11-03 | Giesecke & Devrient Gmbh | Security document and security element for a security document |
US20050151368A1 (en) * | 2002-02-22 | 2005-07-14 | Manfred Heim | Security document and security element for a security document |
US20050031564A1 (en) * | 2002-12-13 | 2005-02-10 | Zimmermann Curtis J. | Color effect materials and production thereof |
US8083846B2 (en) * | 2002-12-13 | 2011-12-27 | Basf Corporation | Color effect materials and production thereof |
US7169472B2 (en) * | 2003-02-13 | 2007-01-30 | Jds Uniphase Corporation | Robust multilayer magnetic pigments and foils |
US20070098989A1 (en) * | 2003-02-13 | 2007-05-03 | Jds Uniphase Corporation | Robust Multilayer Magnetic Pigments And Foils |
US7285336B2 (en) * | 2003-02-13 | 2007-10-23 | Jds Uniphase Corporation | Robust multilayer magnetic pigments and foils |
US20040166308A1 (en) * | 2003-02-13 | 2004-08-26 | Raksha Vladimir P. | Robust multilayer magnetic pigments and foils |
US20110017081A1 (en) * | 2003-06-30 | 2011-01-27 | Kba-Giori S.A. | Printing Machine |
US20060219107A1 (en) * | 2003-06-30 | 2006-10-05 | Matthias Gygi | Printing machine |
WO2005000585A1 (fr) | 2003-06-30 | 2005-01-06 | Kba-Giori S.A. | Machine d'impression |
EP2189286A2 (de) | 2003-06-30 | 2010-05-26 | Kba-Giori S.A. | Druckmaschine und Druckvefahren |
US8286551B2 (en) | 2003-06-30 | 2012-10-16 | Kba-Notasys Sa | Printing machine |
US8621997B2 (en) | 2003-06-30 | 2014-01-07 | Kba-Notasys Sa | Printing machine |
EP2287399A1 (de) | 2003-07-14 | 2011-02-23 | Flex Products, Inc. a JDS Uniphase Company | Sicherheitsfaden enthaltend eine optisch variable Struktur |
US20070296204A1 (en) * | 2003-07-14 | 2007-12-27 | Jds Uniphase Corporation | Vacuum Roll Coated Security Thin Film Interference Products With Overt And/Or Covert Patterned Layers |
US20070273144A1 (en) * | 2003-07-14 | 2007-11-29 | Jds Uniphase Corporation | Vacuum Roll Coated Security Thin Film Interference Products With Overt And/Or Covert Patterned Layers |
US20080019003A1 (en) * | 2003-07-14 | 2008-01-24 | Jds Uniphase Corporation | Vacuum Roll Coated Security Thin Film Interference Products With Overt And/Or Covert Patterned Layers |
US20070273147A1 (en) * | 2003-07-14 | 2007-11-29 | Jds Uniphase Corporation | Vacuum Roll Coated Security Thin Film Interference Products With Overt And/Or Covert Patterned Layers |
US20050042449A1 (en) * | 2003-07-14 | 2005-02-24 | Jds Uniphase Corporation, | Vacuum roll coated security thin film interference products with overt and/or covert patterned layers |
US7744964B2 (en) | 2003-07-14 | 2010-06-29 | Jds Uniphase Corporation | Vacuum roll coated security thin film interference products with overt and/or covert patterned layers |
US20060251754A1 (en) * | 2003-07-25 | 2006-11-09 | Peter Herring | Methods and apparatus for forming a moulding comprising magnetic particles |
US20080096009A1 (en) * | 2004-06-24 | 2008-04-24 | University Of Delaware | High Frequency Soft Magnetic Materials With Laminated Submicron Magnetic Layers And The Methods To Make Them |
US20060043200A1 (en) * | 2004-08-31 | 2006-03-02 | Infineon Technologies Ag | Chip card module |
JP2008529823A (ja) * | 2004-12-09 | 2008-08-07 | シクパ・ホールディング・ソシエテ・アノニム | 視野角依存性の外観をもつセキュリティエレメント |
US7901736B2 (en) * | 2004-12-21 | 2011-03-08 | Planar Systems Oy | Multilayer material and method of preparing same |
US20060134433A1 (en) * | 2004-12-21 | 2006-06-22 | Planar Systems Oy | Multilayer material and method of preparing same |
US8814863B2 (en) | 2005-05-12 | 2014-08-26 | Innovatech, Llc | Electrosurgical electrode and method of manufacturing same |
US11246645B2 (en) | 2005-05-12 | 2022-02-15 | Innovatech, Llc | Electrosurgical electrode and method of manufacturing same |
US9630206B2 (en) | 2005-05-12 | 2017-04-25 | Innovatech, Llc | Electrosurgical electrode and method of manufacturing same |
US10463420B2 (en) | 2005-05-12 | 2019-11-05 | Innovatech Llc | Electrosurgical electrode and method of manufacturing same |
US8814862B2 (en) | 2005-05-12 | 2014-08-26 | Innovatech, Llc | Electrosurgical electrode and method of manufacturing same |
EP1726455A2 (de) * | 2005-05-25 | 2006-11-29 | JDS Uniphase Corporation | Verfahren zur Erzeugung von zwei verschiedenen Plättchenprodukten bei Benutzung eines einzigen Substrats |
EP1726455A3 (de) * | 2005-05-25 | 2010-06-09 | JDS Uniphase Corporation | Verfahren zur Erzeugung von zwei verschiedenen Plättchenprodukten bei Benutzung eines einzigen Substrats |
US20070076292A1 (en) * | 2005-09-27 | 2007-04-05 | Taiwan Semiconductor Manufacturing Company, Ltd. | Fully electric field shielding reticle pod |
EP1780040A3 (de) * | 2005-10-25 | 2012-08-22 | JDS Uniphase Corporation | Gemusterte optische Struktur mit verbessertem Sicherheitsmerkmal |
WO2007089708A3 (en) * | 2006-02-01 | 2008-06-19 | Basf Catalysts Llc | Plastic article comprising oriented effect magnetizable pigments |
WO2007089708A2 (en) * | 2006-02-01 | 2007-08-09 | Basf Catalysts Llc | Plastic article comprising oriented effect magnetizable pigments |
US20080060974A1 (en) * | 2006-02-21 | 2008-03-13 | Taiwan Semiconductor Manufacturing Company, Ltd. | Mask carrier treatment to prevent haze and ESD damage |
US20080073613A1 (en) * | 2006-03-29 | 2008-03-27 | Inoac Corporation | Coating Composition for Forming Pattern and Coated Article |
US20080069979A1 (en) * | 2006-04-11 | 2008-03-20 | Jds Uniphase Corporation | Security image coated with a single coating having visually distinct regions |
US8287989B2 (en) * | 2006-04-11 | 2012-10-16 | Jds Uniphase Corporation | Security image coated with a single coating having visually distinct regions |
US20070254106A1 (en) * | 2006-04-26 | 2007-11-01 | Olson Barry D | Novel aesthetics in surfaces employing deformation and magnetic means |
US20070251603A1 (en) * | 2006-04-26 | 2007-11-01 | Olson Barry D | Novel surface aesthetics employing magnetic particles |
US20090184169A1 (en) * | 2006-05-12 | 2009-07-23 | Sicpa Holding S.A. | Coating Composition for Producing Magnetically Induced Images |
US8246735B2 (en) | 2006-05-12 | 2012-08-21 | Sicpa Holding Sa | Coating composition for producing magnetically induced images |
US8303700B1 (en) | 2006-05-12 | 2012-11-06 | Sicpa Holding Sa | Coating composition for producing magnetically induced |
WO2008009569A3 (en) * | 2006-07-19 | 2008-04-10 | Sicpa Holding Sa | Oriented image coating on transparent substrate |
EP1880866A1 (de) * | 2006-07-19 | 2008-01-23 | Sicpa Holding S.A. | Orientierte Bildbeschichtung auf einem durchsichtigen Substrat |
WO2008009569A2 (en) * | 2006-07-19 | 2008-01-24 | Sicpa Holding S.A. | Oriented image coating on transparent substrate |
US8696031B2 (en) | 2006-07-19 | 2014-04-15 | Sicpa Holding Sa | Oriented image coating on transparent substrate |
US20090200791A1 (en) * | 2006-07-19 | 2009-08-13 | Sicpa Holding S.A. | Oriented Image Coating on Transparent Substrate |
EA013422B1 (ru) * | 2006-07-19 | 2010-04-30 | Сикпа Холдинг С.А. | Защитный элемент с магнитно-ориентированным изображением на прозрачной подложке |
US20080110371A1 (en) * | 2006-11-09 | 2008-05-15 | Sun Chemical Corporation | Security pigments and the process of making thereof |
US7850775B2 (en) | 2006-11-09 | 2010-12-14 | Sun Chemical Corporation | Multi-colored lustrous pearlescent pigments |
US8221536B2 (en) | 2006-11-09 | 2012-07-17 | Sun Chemical Corp. | Cosmetic comprising multi-colored lustrous pearlescent pigments |
US20090038514A2 (en) * | 2006-11-09 | 2009-02-12 | Sun Chemical Corporation | Multi-Colored Lustrous Pearlescent Pigments |
US20080124575A1 (en) * | 2006-11-09 | 2008-05-29 | Hollman Aaron M | Coating, Ink, or Article Comprising Multi-Colored Lustrous Pearlescent Pigments |
US20080118452A1 (en) * | 2006-11-09 | 2008-05-22 | Hollman Aaron M | Cosmetic Comprising Multi-Colored Lustrous Pearlescent Pigments |
US20080110372A1 (en) * | 2006-11-09 | 2008-05-15 | Hollman Aaron M | Multi-Colored Lustrous Pearlescent Pigments and Process for Making |
US8906154B2 (en) | 2006-11-09 | 2014-12-09 | Sun Chemical Corporation | Coating, ink, or article comprising multi-colored lustrous pearlescent pigments |
US8323396B2 (en) | 2006-11-09 | 2012-12-04 | Sun Chemical Corp. | Orange pearlescent pigments |
US8349067B2 (en) | 2006-11-09 | 2013-01-08 | Sun Chemical Corp. | Multi-colored lustrous pearlescent pigments |
US8486189B2 (en) | 2006-11-09 | 2013-07-16 | Sun Chemical Corporation | Cosmetic comprising multi-colored lustrous pearlescent pigments |
US20090208436A1 (en) * | 2006-11-09 | 2009-08-20 | Aaron Hollman | Orange pearlescent pigments |
US8211224B2 (en) | 2006-11-09 | 2012-07-03 | Sun Chemical Corp. | Multi-colored lustrous pearlescent pigments and process for making |
US10242788B2 (en) | 2007-03-21 | 2019-03-26 | Viavi Solutions Inc. | Anisotropic magnetic flakes |
US8893614B2 (en) | 2007-05-10 | 2014-11-25 | Kba-Notasys Sa | Device and method for magnetically transferring indicia to a coating composition applied to a substrate |
WO2010115928A2 (en) | 2009-04-07 | 2010-10-14 | Sicpa Holding Sa | Piezochromic security element |
AP2879A (en) * | 2009-04-09 | 2014-03-31 | Sicpa Holding Sa | Clear magnetic intaglio printing ink |
US9617435B2 (en) | 2009-04-09 | 2017-04-11 | Sicpa Holding Sa | Clear magnetic intaglio printing ink |
WO2010115986A3 (en) * | 2009-04-09 | 2010-12-16 | Sicpa Holding Sa | Clear magnetic intaglio printing ink |
AU2010233646B2 (en) * | 2009-04-09 | 2015-02-05 | Bank Of Canada | Clear magnetic intaglio printing ink |
EA020380B1 (ru) * | 2009-04-09 | 2014-10-30 | Сикпа Холдинг Са | Светлая магнитная типографская краска для глубокой печати |
WO2011012520A2 (en) | 2009-07-28 | 2011-02-03 | Sicpa Holding Sa | Transfer foil comprising optically variable magnetic pigment, method of making, use of transfer foil, and article or document comprising such |
US20120133121A1 (en) * | 2009-07-28 | 2012-05-31 | Sicpa Holding Sa | Transfer foil comprising optically variable magnetic pigment, method of making, use of transfer foil, and article or document comprising such |
WO2011012520A3 (en) * | 2009-07-28 | 2011-06-09 | Sicpa Holding Sa | Transfer foil comprising optically variable magnetic pigment, method of making, use of transfer foil, and article or document comprising such |
WO2011091969A1 (de) * | 2010-01-29 | 2011-08-04 | Giesecke & Devrient Gmbh | Sicherheitselement mit erweitertem farbkippeffekt und thermochromer zusatzfunktion |
WO2011107527A1 (en) | 2010-03-03 | 2011-09-09 | Sicpa Holding Sa | Security thread or stripe comprising oriented magnetic particles in ink, and method and means for producing same |
US9216605B2 (en) | 2010-03-03 | 2015-12-22 | Sicpa Holding Sa | Security thread or stripe comprising oriented magnetic particles in ink, and method and means for producing same |
US11787956B2 (en) * | 2010-06-30 | 2023-10-17 | Viavi Solutions Inc. | Magnetic multilayer pigment flake and coating composition |
US20140300096A1 (en) * | 2011-09-26 | 2014-10-09 | Crane Security Technologies, Inc. | Method for producing a composite web and security devices prepared from the composite web |
US10195891B2 (en) * | 2011-09-26 | 2019-02-05 | Crane Security Technologies, Inc. | Method for producing a composite web and security devices prepared from the composite web |
US9844969B2 (en) | 2012-08-01 | 2017-12-19 | Sicpa Holdings Sa | Optically variable security threads and stripes |
US9701152B2 (en) | 2012-08-29 | 2017-07-11 | Sicpa Holding Sa | Optically variable security threads and stripes |
US20150071973A1 (en) * | 2012-09-14 | 2015-03-12 | Toyo Aluminium Kabushiki Kaisha | Colored metallic pigment and method for producing the same |
US9499696B2 (en) * | 2012-09-14 | 2016-11-22 | Toyo Aluminum Kabushiki Kaisha | Colored metallic pigment and method for producing the same |
WO2014055555A1 (en) | 2012-10-01 | 2014-04-10 | Jds Uniphase Corporation | A colorant including a mixture of pigments |
US10189997B2 (en) | 2012-10-01 | 2019-01-29 | Viavi Solutions Inc. | Colorant including a mixture of pigments |
US9796856B2 (en) | 2012-10-01 | 2017-10-24 | Viavi Solutions Inc. | Colorant including a mixture of pigments |
US10051156B2 (en) | 2012-11-07 | 2018-08-14 | Xerox Corporation | System and method for producing correlation and gloss mark images |
US9840632B2 (en) | 2012-12-07 | 2017-12-12 | Sicpa Holding Sa | Oxidatively drying ink compositions |
WO2014086556A1 (en) | 2012-12-07 | 2014-06-12 | Sicpa Holding Sa | Oxidatively drying ink compositions |
CN103343486A (zh) * | 2013-06-21 | 2013-10-09 | 陕西科技大学 | 一种具有磁特性和发光特性纸的制备方法 |
US10279618B2 (en) | 2013-08-05 | 2019-05-07 | Sicpa Holding Sa | Magnetic or magnetisable pigment particles and optical effect layers |
CN103468056A (zh) * | 2013-08-07 | 2013-12-25 | 中钞油墨有限公司 | 含有微结构材料的防伪油墨组合物及其制备方法 |
US9617189B2 (en) * | 2013-08-30 | 2017-04-11 | Ut-Battelle, Llc | Apparatus and method for materials processing utilizing a rotating magnetic field |
US20150064360A1 (en) * | 2013-08-30 | 2015-03-05 | Ut-Battelle, Llc | Apparatus and method for materials processing utilizing a rotating magnetic field |
US9106847B2 (en) | 2013-09-18 | 2015-08-11 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9319557B2 (en) | 2013-09-18 | 2016-04-19 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9088736B2 (en) | 2013-09-18 | 2015-07-21 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9193201B2 (en) | 2013-09-18 | 2015-11-24 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9083896B2 (en) | 2013-09-18 | 2015-07-14 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9118870B2 (en) | 2013-09-18 | 2015-08-25 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9100592B2 (en) | 2013-09-18 | 2015-08-04 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9237253B2 (en) | 2013-09-18 | 2016-01-12 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9415606B2 (en) | 2013-09-18 | 2016-08-16 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9148546B2 (en) | 2013-09-18 | 2015-09-29 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US9444969B2 (en) | 2013-09-18 | 2016-09-13 | Xerox Corporation | System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect |
US10453487B2 (en) | 2013-09-30 | 2019-10-22 | Seagate Technology Llc | Magnetic stack including MgO—Ti(ON) interlayer |
CN103602102A (zh) * | 2013-11-15 | 2014-02-26 | 浙江凯色丽科技发展有限公司 | 一种3d变色珠光颜料 |
US10933442B2 (en) | 2013-12-13 | 2021-03-02 | Sicpa Holding Sa | Processes for producing effects layers |
WO2015086257A1 (en) | 2013-12-13 | 2015-06-18 | Sicpa Holding Sa | Processes for producing effects layers |
US9082068B1 (en) | 2014-05-06 | 2015-07-14 | Xerox Corporation | Color shift printing without using special marking materials |
AU2015287068B2 (en) * | 2014-07-09 | 2020-02-20 | Sicpa Holding Sa | Optically variable magnetic security threads and stripes |
US10166810B2 (en) * | 2014-07-09 | 2019-01-01 | Sicpa Holding Sa | Optically variable magnetic security threads and stripes |
US10500889B2 (en) | 2014-07-30 | 2019-12-10 | Sicpa Holding Sa | Belt-driven processes for producing optical effect layers |
WO2016016028A1 (en) | 2014-07-30 | 2016-02-04 | Sicpa Holding Sa | Belt-driven processes for producing optical effect layers |
US11042047B1 (en) * | 2014-08-22 | 2021-06-22 | Sunlight Aerospace Inc. | Mobile system incorporating flexible and tunable optically reflective skin and method of use |
US11214690B2 (en) | 2015-04-15 | 2022-01-04 | Schlenk Metallic Pigments Gmbh | Pearlescent pigments, process for producing them, and use of such pigments |
US11356287B2 (en) | 2015-10-09 | 2022-06-07 | Lexmark International, Inc. | Injection-molded physical unclonable function |
US9538041B1 (en) | 2015-11-25 | 2017-01-03 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9883073B2 (en) | 2015-11-25 | 2018-01-30 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9674392B1 (en) | 2015-11-25 | 2017-06-06 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9674391B1 (en) | 2015-11-25 | 2017-06-06 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9756212B2 (en) | 2015-11-25 | 2017-09-05 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US9516190B1 (en) | 2015-11-25 | 2016-12-06 | Xerox Corporation | System and method for producing seesaw gloss effect and recording medium with seesaw gloss effect |
US11008477B2 (en) * | 2016-01-29 | 2021-05-18 | Sicpa Holding Sa | Intaglio magnetic machine readable oxidative drying inks |
US9614995B1 (en) | 2016-05-02 | 2017-04-04 | Xerox Corporation | System and method for generating vector based correlation marks and vector based gloss effect image patterns for rendering on a recording medium |
US9661186B1 (en) | 2016-06-02 | 2017-05-23 | Xerox Corporation | System and method for rendering gloss effect image patterns on a recording medium |
EP3266835A1 (de) * | 2016-06-27 | 2018-01-10 | Viavi Solutions Inc. | Pigmentflocken und folien mit hoher chromatizität |
US10207479B2 (en) | 2016-06-27 | 2019-02-19 | Viavi Solutions Inc. | Magnetic articles |
CN111823750A (zh) * | 2016-06-27 | 2020-10-27 | 唯亚威通讯技术有限公司 | 高色度颜料薄片和箔片 |
US11214689B2 (en) | 2016-06-27 | 2022-01-04 | Viavi Solutions Inc. | High chroma flakes |
US10882280B2 (en) | 2016-06-27 | 2021-01-05 | Viavi Solutions Inc. | Magnetic articles |
US10493724B2 (en) | 2016-06-27 | 2019-12-03 | Viavi Solutions Inc. | Magnetic articles |
US20170368866A1 (en) * | 2016-06-27 | 2017-12-28 | Viavi Solutions Inc. | High chromaticity pigment flakes and foils |
EP3868839A1 (de) * | 2016-06-27 | 2021-08-25 | Viavi Solutions Inc. | Pigmentflocken und folien mit hoher chromatizität |
US10928579B2 (en) | 2016-06-27 | 2021-02-23 | Viavi Solutions Inc. | Optical devices |
WO2018019594A1 (en) | 2016-07-29 | 2018-02-01 | Sicpa Holding Sa | Processes for producing effect layers |
US10610888B2 (en) | 2016-07-29 | 2020-04-07 | Sicpa Holding Sa | Processes for producing effect layers |
US9781294B1 (en) | 2016-08-09 | 2017-10-03 | Xerox Corporation | System and method for rendering micro gloss effect image patterns on a recording medium |
US11292027B2 (en) | 2016-08-16 | 2022-04-05 | Sicpa Holding Sa | Processes for producing effect layers |
US11707764B2 (en) | 2016-08-16 | 2023-07-25 | Sicpa Holding Sa | Processes for producing effect layers |
WO2018033512A1 (en) | 2016-08-16 | 2018-02-22 | Sicpa Holding Sa | Processes for producing effects layers |
US11833849B2 (en) | 2016-12-19 | 2023-12-05 | Viavi Solutions Inc. | Security ink based security feature |
EP3335899A1 (de) * | 2016-12-19 | 2018-06-20 | Viavi Solutions Inc. | Sicherheitstinte basierend auf sicherheitsmerkmalen |
US10357991B2 (en) | 2016-12-19 | 2019-07-23 | Viavi Solutions Inc. | Security ink based security feature |
EP3335899B1 (de) | 2016-12-19 | 2020-06-03 | Viavi Solutions Inc. | Sicherheitstinte basierend auf sicherheitsmerkmalen |
CN112265394A (zh) * | 2016-12-19 | 2021-01-26 | 唯亚威通讯技术有限公司 | 防伪物件及其制备方法 |
EP4052919A3 (de) * | 2016-12-19 | 2022-09-28 | Viavi Solutions Inc. | Sicherheitstinte basierend auf sicherheitsmerkmalen |
EP3747663A1 (de) * | 2016-12-19 | 2020-12-09 | Viavi Solutions Inc. | Sicherheitstinte basierend auf sicherheitsmerkmalen |
US11241901B2 (en) | 2016-12-19 | 2022-02-08 | Viavi Solutions Inc. | Security ink based security feature |
US10844227B2 (en) | 2016-12-21 | 2020-11-24 | Viavi Solutions, Inc. | Hybrid colored metallic pigment |
EP3339381A1 (de) * | 2016-12-21 | 2018-06-27 | Viavi Solutions Inc. | Teilchen mit aufgedampftem farbstoff |
US11802210B2 (en) | 2016-12-21 | 2023-10-31 | Viavi Solutions Inc. | Hybrid colored metallic pigment |
US11891524B2 (en) | 2016-12-21 | 2024-02-06 | Viavi Solutions Inc. | Pigments having a vapor deposited colorant |
US20180194946A1 (en) * | 2017-01-10 | 2018-07-12 | Schlenk Metallic Pigments Gmbh | Pearlescent pigments obtained by wet oxidation |
US10563065B2 (en) * | 2017-01-10 | 2020-02-18 | Schlenk Metallic Pigments Gmbh | Pearlescent pigments obtained by wet oxidation |
RU2729995C1 (ru) * | 2017-02-20 | 2020-08-13 | Иллинойс Тул Воркс Инк. | Непроводящая магнитная полоса в сборе |
US11080579B2 (en) * | 2017-02-20 | 2021-08-03 | Illinois Tool Works Inc. | Non-conductive magnetic stripe assembly |
TWI721251B (zh) * | 2017-03-01 | 2021-03-11 | 美商菲爾薇解析公司 | 片狀粒子及製造方法 |
WO2018160639A1 (en) * | 2017-03-01 | 2018-09-07 | Viavi Solutions Inc. | Lamellar particles and methods of manufacture |
WO2018160643A1 (en) * | 2017-03-01 | 2018-09-07 | Viavi Solutions Inc. | Lamellar particles with functional coating |
US10557972B2 (en) | 2017-03-01 | 2020-02-11 | Viavi Solutions Inc. | Lamellar particles having different properties in different areas and methods of manufacture |
US11493672B2 (en) | 2017-03-01 | 2022-11-08 | Viavi Solutions Inc. | Lamellar particles with functional coating |
US11787948B2 (en) | 2017-06-28 | 2023-10-17 | Sicpa Holding Sa | Optical effect pigment |
US11691449B2 (en) | 2018-01-17 | 2023-07-04 | Sicpa Holding Sa | Processes for producing optical effects layers |
WO2019141452A1 (en) | 2018-01-17 | 2019-07-25 | Sicpa Holding Sa | Processes for producing optical effects layers |
WO2019141453A1 (en) | 2018-01-17 | 2019-07-25 | Sicpa Holding Sa | Processes for producing optical effects layers |
US11772404B2 (en) | 2018-01-17 | 2023-10-03 | Sicpa Holding Sa | Processes for producing optical effects layers |
CN108559312A (zh) * | 2018-05-25 | 2018-09-21 | 苗霞明 | 一种钴着色云母珠光颜料的制备方法 |
WO2019233625A1 (de) * | 2018-06-05 | 2019-12-12 | Giesecke+Devrient Currency Technology Gmbh | Effektpigment, druckfarbe, sicherheitselement, datenträger und herstellungsverfahren |
US11754848B2 (en) | 2018-06-29 | 2023-09-12 | Viavi Solutions Inc. | Optical devices with azimuthal modulator layer |
US20200004032A1 (en) * | 2018-06-29 | 2020-01-02 | Viavi Solutions Inc. | Optical devices with azimuthal modulator layer |
US10976561B2 (en) * | 2018-06-29 | 2021-04-13 | Viavi Solutions Inc. | Optical devices with azimuthal modulator layer |
WO2020025482A1 (en) | 2018-07-30 | 2020-02-06 | Sicpa Holding Sa | Assemblies and processes for producing optical effect layers comprising oriented magnetic or magnetizable pigment particles |
WO2020025218A1 (en) | 2018-07-30 | 2020-02-06 | Sicpa Holding Sa | Processes for producing optical effects layers |
EP4230311A1 (de) | 2018-07-30 | 2023-08-23 | Sicpa Holding SA | Verfahren zur herstellung von schichten mit optischen effekten |
US11577273B2 (en) | 2018-07-30 | 2023-02-14 | Sicpa Holding Sa | Processes for producing optical effects layers |
US11945972B2 (en) | 2018-12-03 | 2024-04-02 | Viavi Solutions Inc. | Composition including a color shifting pigment and a color filter |
US11680175B2 (en) * | 2018-12-03 | 2023-06-20 | Viavi Solutions Inc. | Composition including a color shifting pigment and a color filter |
US11740532B2 (en) | 2018-12-17 | 2023-08-29 | Viavi Solutions Inc. | Article including light valves |
US11118061B2 (en) * | 2018-12-17 | 2021-09-14 | Viavi Solutions Inc. | Article including at least one metal portion |
WO2020127595A1 (fr) | 2018-12-19 | 2020-06-25 | Oberthur Fiduciaire Sas | Procede pour orienter des particules sensibles au champ magnetique et machine d'impression pour sa mise en oeuvre |
FR3090992A1 (fr) | 2018-12-19 | 2020-06-26 | Oberthur Fiduciaire Sas | Dispositif configuré pour orienter des particules sensibles au champ magnétique, machine et appareil qui en sont équipés |
WO2020173693A1 (en) | 2019-02-28 | 2020-09-03 | Sicpa Holding Sa | Method for authenticating a magnetically induced mark with a portable device |
US11823003B2 (en) | 2019-02-28 | 2023-11-21 | Sicpa Holding Sa | Method for authenticating a magnetically induced mark with a portable device |
US11348725B2 (en) | 2019-04-30 | 2022-05-31 | Unist (Ulsan National Institute Of Science And Technology) | Method of manufacturing visually stereoscopic print film and visually stereoscopic print film manufactured using the method |
CN110305501A (zh) * | 2019-07-10 | 2019-10-08 | 济南大学 | 一种颜料嵌入型多层包覆的蓝色铝颜料的制备方法 |
CN115348993A (zh) * | 2020-04-02 | 2022-11-15 | 兰达实验室(2012)有限公司 | 用于制造薄片的方法 |
WO2021198976A1 (en) * | 2020-04-02 | 2021-10-07 | Landa Labs (2012) Ltd | Method for making flakes |
WO2021239607A1 (en) | 2020-05-26 | 2021-12-02 | Sicpa Holding Sa | Magnetic assemblies and methods for producing optical effect layers comprising oriented platelet-shaped magnetic or magnetizable pigment particles |
US20210380812A1 (en) * | 2020-06-05 | 2021-12-09 | Viavi Solutions Inc. | Security pigment |
WO2021259527A1 (en) | 2020-06-23 | 2021-12-30 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles |
WO2022049025A1 (en) | 2020-09-02 | 2022-03-10 | Sicpa Holding Sa | Security marking, method and device for reading the security marking, security document marked with the security marking, and method and system for verifying said security document |
WO2022049024A1 (en) | 2020-09-02 | 2022-03-10 | Sicpa Holding Sa | Security documents or articles comprising optical effect layers comprising magnetic or magnetizable pigment particles and methods for producing said optical effect layers |
DE102021000889A1 (de) | 2021-02-19 | 2022-08-25 | Giesecke+Devrient Currency Technology Gmbh | Zusammensetzung, farbkippendes Effektpigment, Druckfarbe und Wertgegenstand |
CN115011146A (zh) * | 2021-03-04 | 2022-09-06 | Viavi科技有限公司 | 包括金属间化合物的颜料 |
CN113024237A (zh) * | 2021-03-11 | 2021-06-25 | 深圳信义磁性材料有限公司 | 一种磁性纳米复合材料的制备方法 |
WO2022207692A1 (en) | 2021-03-31 | 2022-10-06 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
WO2022258521A1 (en) | 2021-06-11 | 2022-12-15 | Sicpa Holding Sa | Optical effect layers comprising magnetic or magnetizable pigment particles and methods for producing said optical effect layers |
WO2023161464A1 (en) | 2022-02-28 | 2023-08-31 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
WO2024028408A1 (en) | 2022-08-05 | 2024-02-08 | Sicpa Holding Sa | Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6838166B2 (en) | Multi-layered magnetic pigments and foils | |
US6808806B2 (en) | Methods for producing imaged coated articles by using magnetic pigments | |
US7169472B2 (en) | Robust multilayer magnetic pigments and foils | |
AU2002305131A1 (en) | Methods for producing imaged coated articles by using magnetic pigments |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FLEX PRODUCTS, INC., CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PHILLIPS, ROGER W.;LEGALLEE, CHARLOTTE R.;MARKANTES, CHARLES T.;AND OTHERS;REEL/FRAME:012058/0667;SIGNING DATES FROM 20010523 TO 20010529 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |