Including Developable Image Or Soluble Portion In Coating Or Impregnation (e.g., Safety Paper, Etc.) Patents (Class 428/199)
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Publication number: 20100239831Abstract: A method and system are provided for including a double layer security mark in digital document data defining an image of a document to be printed and in the printed document, itself. A fluorescence mark region including a fluorescence mark is defined using first and second metameric colorant mixtures. Variation in colorant spatial coverage between the first and second metameric colorant mixtures results in colorant-free areas that define the fluorescence mark due to substrate fluorescence under UV illumination. The fluorescence mark region is modified to define a double layer fluorescence mark region including the fluorescence mark and also including at least one visible light object defined by a third colorant mixture. The third colorant mixture is added to the fluorescence mark region by masking the colorant-free areas of the fluorescence mark region to prevent writing of the third colorant mixture data to the colorant-free areas so as not to disturb the colorant-free areas.Type: ApplicationFiled: March 17, 2009Publication date: September 23, 2010Applicant: XEROX CORPORATIONInventor: Reiner Eschbach
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Publication number: 20100209632Abstract: The present invention is directed toward fluorescent inks and markers comprising carbon nanotubes. The present invention is also directed toward methods of making such inks and markers and to methods of using such inks and markers, especially for security applications (e.g., anti-counterfeiting). Such inks and markers rely on the unique fluorescent properties of semiconducting carbon nanotubes.Type: ApplicationFiled: February 4, 2010Publication date: August 19, 2010Applicant: WILLIAM RICE MARSH UNIVERSITYInventors: R. Bruce Weisman, Sergei M. Bachilo, Eric Christopher Booth
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Publication number: 20100112314Abstract: Methods of applying covert features using security inks comprise transparent chiral birefringent pigments or a mixture of transparent chiral birefringent pigments and reflective pigments are described. Hidden features appear to be bright and achromatic against dark background when overlaid with circular polarizer.Type: ApplicationFiled: November 2, 2009Publication date: May 6, 2010Inventors: Yingqiu Jiang, Aharon Hochbaum
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Publication number: 20100059691Abstract: A composition comprising an ink and an infrared-absorbing material wherein said infrared-absorbing material comprises a metal, a metal salt, a metal oxide or metal nitride is described. Also described is an article comprising a substrate having imaged thereon an infrared-absorbing material to form a security image; and a method of manufacture of such an article said method comprising image-wise applying substrate a composition comprising an infrared-absorbing material.Type: ApplicationFiled: May 11, 2007Publication date: March 11, 2010Inventors: David Malcolm Lewis, Peter Jeffrey Broadbent
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Publication number: 20090258200Abstract: The invention relates to a feature substance for securing the authenticity of documents of value, having at least one luminescent substance in particle form and nanoparticles enveloping the surfaces of the luminescent substance particles at least partially, wherein the properties of the feature substance result from the interaction of the properties of the luminescent substance and of the nanoparticles. The invention furthermore relates to a method for producing the feature substance, a method for securing the authenticity of a security element or document of value using a feature substance, as well as security elements and documents of value with authenticity features on the basis of the feature substance.Type: ApplicationFiled: October 4, 2006Publication date: October 15, 2009Inventors: Ulrich Scholz, Gregor Grauvogl
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Publication number: 20090181193Abstract: The present invention relates to a process for the continuous production of mesh bags, comprising the operation of cutting longitudinal portions from a body of bag formed by a longitudinal section of flattened tubular mesh and a longitudinal section of at least one flexible sheet applied and attached to one of the faces of said tubular mesh, in which prior or subsequent to the application of the sheet on the mesh said sheet is passed through detection means, suitable for detecting the passage through the detection field of a section of sheet provided with a marking, transparent to visible light and luminescent upon being radiated with ultraviolet or infrared light. The detection of said marking automatically triggers the performance of the operation of transversely cutting the continuous body of bag into a length corresponding to that of a bag.Type: ApplicationFiled: January 7, 2009Publication date: July 16, 2009Applicant: GIRO GH, S.A.Inventor: Ezequiel GIRO AMIGO
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Patent number: 7521112Abstract: The present invention is a system for hiding and later revealing a hidden layer. The system includes a substrate and applicator. As the user moves the applicator around the substrate, a coating is rendered transparent to reveal a hidden layer under the pattern of the user's movement of the applicator. The system comprises a substrate at least partially coated with a generally opaque coating that reacts with an eradicator fluid. A preferred coating as applied to the substrate comprises 20-80 wt % water, 0-3 wt % defoamer, 0-3 wt % surfactant, 0-5 wt % wetting agent, 1-25 wt % colorant, 1-60 wt % resin, and 0-4 wt % preservatives. A preferred reducing fluid in such case comprises 30-95 wt % water, 1-5 wt % pH adjuster, 5-15 wt % reducing agent, 0-5 wt % surfactant, and 2-10 wt % buffer.Type: GrantFiled: June 29, 2004Date of Patent: April 21, 2009Assignee: Crayola LLCInventors: Jie Li, Cheryl Krieger, Arthur N. Urbanski, Craig Skinner, Karl Guyler, Stephen D. Glasscock
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Patent number: 7514137Abstract: A packaging laminate for a retortable packaging container or carton, comprising a core layer (11) and outer, liquid-tight coatings (12 and 13) on both sides of the core layer (11). The one (12) of the two outer coatings carries decorative artwork (14) of printing ink which is both mechanically and thermally protected by a layer (18) of lacquer applied on the coating (12) to make possible heat treatment at high humidity and temperature conditions of a packaging container produced from the packaging laminate (10), without the printing ink decorative artwork of the packaging container deteriorating in quality.Type: GrantFiled: September 11, 2001Date of Patent: April 7, 2009Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Peter Öhman, Ib Leth
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Publication number: 20090069893Abstract: In general, the present invention is related to collagen compositions and thin films, and to methods of making and using the same. In some embodiments, the present invention is directed to “uniaxial pattern” or “linear pattern” collagen materials, compositions and thin films, and methods of making.Type: ApplicationFiled: April 18, 2008Publication date: March 12, 2009Inventors: Mikhail Vitoldovich Paukshto, David Harwood McMurty
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Publication number: 20080308172Abstract: There are utilized at least two kinds of ultraviolet-fluorescent yarns with different chromophore, which is spun out of dope kneaded with a fluorescent material. When ultraviolet-fluorescent yarns and colorless yarns are wound around a beam or drum with or without infrared-fluorescent yarns, ultraviolet-fluorescent yarns are arranged repeatedly in specific color order in the traverse direction during the warping operation. These yarns as the warp are woven into a wide textile with a wide loom. In this weaving, ultraviolet- and infrared-yarns are interwoven in specific color order in parallel with each other over the entire width of the wide textile, which is cut into tapes with heating in the broader width than a space where the color order may be identified.Type: ApplicationFiled: July 15, 2005Publication date: December 18, 2008Inventor: Hideki Terashima
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Publication number: 20080241489Abstract: A method of forming a resist pattern through liquid immersion exposure in which exposure is performed such that a liquid film is formed between a substrate for a semiconductor device on which a processed film is formed and an objective lens arranged above the substrate is provided, and the substrate treated with a water-repellent agent solution composed of at least a water-repellent agent and a solvent is exposed to light.Type: ApplicationFiled: March 27, 2008Publication date: October 2, 2008Inventors: Takeo Ishibashi, Mamoru Terai, Takuya Hagiwara, Atsumi Yamaguchi
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Patent number: 7416999Abstract: A net, in particular a ball net for catching balls, such as a volleyball net, football net, tennis net or ball-catching net, or a net-like fence, has a net body formed from net threads connected to one another in mesh form. The net is distinguished in that the net. threads of the net body are thickened, in one region, over a plurality of meshes by an applied thickening material, in such a way that the region can be recognized by the observer outwardly, with high visual contrast, as a character, in particular as a letter character or logo.Type: GrantFiled: December 6, 2005Date of Patent: August 26, 2008Inventors: Uwe Arnold, Freddy Arnold
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Publication number: 20080057276Abstract: The present invention relates to a decorative panel comprising a decorative layer on one or both surfaces of a carrier layer. In addition to that, the present invention relates to a method for manufacturing a decorative panel consisting of a carrier layer and a decorative layer. The invention also relates to a method for forming a decorative layer.Type: ApplicationFiled: May 21, 2004Publication date: March 6, 2008Inventors: Gustav Dennis Rasmusson, Marcelle Hodgson, Hendrikus Hubertus Gerardus Voncken
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Patent number: 7329455Abstract: A three-ply product includes a particleboard core assembled with a patterned vulcanized fibre sheet or layer on each surface. One of the vulcanized fibre sheets may have a preprinted decorative pattern provided thereon. The other vulcanized fibre sheet may also be decorative, or merely a plain sheet of vulcanized fibre. The product is useful for woodworking applications, and may be processed (i.e., stained, sanded, lacquered, etc.) like a natural wood product. Unlike prior vulcanized fibre processes, the process of making the vulcanized fibre sheets preprints a pattern, in a preprinting process, on the top sheets of cellulose paper plies.Type: GrantFiled: November 2, 2004Date of Patent: February 12, 2008Assignee: NVF CompanyInventor: Watson F. Brown
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Patent number: 7160602Abstract: A support for an image recording material comprises base paper having a formation index at a restriction diameter of 1.0 mm equal to or greater than 80 and density equal to or greater than 0.95 g/m3, changes of said formation index and density of said base paper before and after contact of a front surface of said base paper at a side on which an image recording layer of said imager recording material is formed with water at 20° C. for 30 seconds being equal to or less than 10 and 0.05 g/m3, respectively.Type: GrantFiled: March 26, 2004Date of Patent: January 9, 2007Assignee: Fuji Photo Film Co., Ltd.Inventor: Shigehisa Tamagawa
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Patent number: 7147801Abstract: Disclosed is an ink composition suitable for ink jet printing comprising a luminescent compound, a solvent, and an energy active compound, and optionally a non-luminescent colorant. The energy active compound, when exposed to energy, generates one or more active species that can react with the luminescent compound to alter one or more of the characteristics of the luminescent compound. The luminescent compound can be colored or colorless. Also disclosed is a method for marking substrates comprising providing a mark comprising a luminescent compound and an energy active compound. Further disclosed is a jet ink composition suitable for printing on substrates authentication or security marks which can be rendered unreadable. The luminescence of the mark is quenched and the visible color is changed when irradiated with a light.Type: GrantFiled: March 12, 2004Date of Patent: December 12, 2006Assignee: Videojet Technologies Inc.Inventors: Michael Kozee, Steven D. Looman, John P. Folkers
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Patent number: 7056570Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: GrantFiled: April 7, 2004Date of Patent: June 6, 2006Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Hisayoshi Kato
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Patent number: 6984418Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: GrantFiled: April 7, 2004Date of Patent: January 10, 2006Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Hisayoshi Kato
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Patent number: 6974623Abstract: The invention relates to a security paper with at least two types of mottled fibers, which differ in terms of their luminescent characteristics and form a code. In each case one type of mottled fibers is present in a defined subarea of the security paper, and the code is represented by the defined geometric arrangement of the subareas on the security paper and/or by the presence or absence of mottled fibers of a specific type.Type: GrantFiled: December 20, 2000Date of Patent: December 13, 2005Assignee: Giesecke & Devrient GmbHInventor: Gerhard Schwenk
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Patent number: 6964807Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: GrantFiled: September 25, 2001Date of Patent: November 15, 2005Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Hisayoshi Kato
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Patent number: 6929845Abstract: A coated paper for gravure printing that offers good gravure printability resulting from reduced missing dots while at the same time achieving high sheet gloss, wherein the paper comprises a base paper and a coating layer containing a pigment and an adhesive. This paper also contains a compound having an effect of inhibiting the binding between pulp fibers, wherein the compound, when added to 0.3 weight-part per 100 parts of bone-dry pulp, will reduce the tensile strength of the paper by five % to 40% (as measured in accordance with JIS P 8133).Type: GrantFiled: September 27, 2001Date of Patent: August 16, 2005Assignee: Nippon Paper Industries Co., Ltd.Inventors: Hidehiko Kai, Koji Okomori, Chizuru Wakai, Hirokazu Morii, Hideki Fujiwara
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Patent number: 6902331Abstract: The present disclosure relates to a method for printing a secure image on media using an inkjet printing device. The method includes printing an underlayer using an inkjet printing device that penetrates into a front surface of media. The underlayer is configured to define identification indicia. Included in the method is printing a secure image on top of the underlayer using an inkjet printing device. Examination of a back surface opposite the front surface allows viewing of the identification indicia for authenticating the secure image.Type: GrantFiled: October 27, 2000Date of Patent: June 7, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: Gopalan Raman
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Patent number: 6869658Abstract: A printable recording material and the method of using the same. The material includes a substrate and at least one functional coating on at least one side of the substrate insuring printability. The coating includes a binder and inorganic pigments in an amount of at least 50% by weight based on the dry weight of the coating. An image can be embedded in the coating.Type: GrantFiled: September 12, 2001Date of Patent: March 22, 2005Assignee: Zanders Feinpapier AGInventor: Franz Josef Becker
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Patent number: 6852399Abstract: A decorative material is provided which particularly possesses excellent adhesion properties. The decorative material comprises: a substrate; a print layer provided on the substrate; a protective layer provided on the print layer, the protective layer comprising an ionizing radiation-cured resin; and a stress relaxing layer as a primer layer provided between the print layer and the protective layer, for relaxing shrinkage stress caused at the time of curing of an ionizing radiation-curable resin for the formation of the ionizing radiation-cured resin constituting the protective layer.Type: GrantFiled: July 14, 1999Date of Patent: February 8, 2005Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kazuhiro Takahashi, Kimio Ito
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Patent number: 6838398Abstract: A method of making a quilt includes a batting including a heat activated adhesive coating each side or faces of the batting. The quilt covers are attached to the batting by sequentially placing the covers onto the respective batting faces and heating each cover and adjacent adhesive by moving a hot iron over each cover. The covers are connected to each by a plurality of spaced yarn or other suitable decorative connecting means which extend through the covers and batting to secure the batting in place and may form a desired decorative pattern. The inactive adhesive remains in the quilt or is removed by washing of the quilt. The batting with the inactive adhesive is provided as a commercially available product.Type: GrantFiled: July 9, 2001Date of Patent: January 4, 2005Assignee: June Tailor, Inc.Inventors: Jilene A. Repp, Francis A. Yogerst
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Publication number: 20040146698Abstract: A method for pad printing a pattern on a textile substrate with a pad printing machine, and fabric and apparel so formed from the textile substrate. The method includes the steps of positioning the textile substrate on the printing area of the pad printing machine, transferring a pattern having at least one color from the cliche of the pad printing machine to a printing pad, and transferring the pattern from the printing pad to the textile substrate.Type: ApplicationFiled: January 28, 2003Publication date: July 29, 2004Inventors: Edmund L. Pace, Gregory S. Braxton
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Patent number: 6730190Abstract: An in-line method for making a water-activatable laminate. The method includes providing a polymeric film having a first surface and a second surface. An opaque water activatable material containing from about 5 to about 40 wt. % pigment and from about 60 to about 95 wt. % binder is applied to the first surface of the film using an in-line coating technique selected from a flexographic coater, a rotary screen press, and a rotogravure coating technique. The coating is then dried to provide a single water activatable opaque layer having a thickness ranging from about 0.60 mil to about 2.0 mil. The binder for the opaque coating layer includes a mixture of solvent, butyl acetate, ethylene glycol monobutyl ether and propylene glycol. The laminate may be used multiple times without adversely affecting its ability to reveal and hide images.Type: GrantFiled: March 15, 2002Date of Patent: May 4, 2004Inventors: Bryan A. Netsch, Mark H. Bailey
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Patent number: 6706374Abstract: A stereolithographically fabricated marking for a semiconductor device component, such as a packaged or unpackaged semiconductor device or another substrate. When formed on a semiconductor device with a stereolithographically formed package structure, the marking may be integral with the package. The marking may be formed as apertures through or recesses in one or more stereolithographically fabricated layers of material, or the marking may include one or more stereolithographically fabricated layers that protrude from a surface of a semiconductor device component. Raised markings may also be formed on the surfaces of packaged or bare semiconductor device components. Alternatively, the marking may be fabricated separately from a semiconductor device component, then secured thereto. Methods for stereolithographically marking semiconductor device components are also disclosed.Type: GrantFiled: November 21, 2002Date of Patent: March 16, 2004Assignee: Micron Technology, Inc.Inventors: Ford B. Grigg, James M. Ocker, Rick A. Leininger
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Patent number: 6699570Abstract: A dynamic reimageable document or electric paper can be formed from ordinary substrates such as paper, transparencies or fabric by printing of microencapsulated Gyricon beads onto one or more discrete surface areas of the substrate. The substrate can include both fixed print regions formed by conventional fixed ink processes and dynamic reimageable regions formed by the Gyricon beads. The Gyricon beads are preferably bichromal and of contrasting colors, such as black/white so as to be changeable to display two states by selective application of electromagnetic force to the beads. By providing bichromal beads in differing color combinations, such as red/white and black/white, a multi-colored document can be achieved in which various fields of the document, representing text, images or graphics, may be in differing colors. Moreover, operations to perform both imaging or erasure can act on the discrete reimageable regions so that the versatility of the electric paper can be enhanced.Type: GrantFiled: November 6, 2001Date of Patent: March 2, 2004Assignee: Xerox CorporationInventors: Naveen Chopra, Steven Georges, Peter M. Kazmaier, Sammy Y.H. Ro, Man C. Tam, Francisco E. Torres, Sophie V. Vandebroek
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Publication number: 20040022967Abstract: Described is a laminate body, in particular a laminate foil, comprising a laser-sensitive layer and an identification element, for example a diffraction and/or hologram structure, a reflection layer, a printed image or the like, which is provided in a second layer and/or in the laser-sensitive layer, wherein the laser-sensitive layer has a marking produced by laser action, which is positioned in accurate register relationship relative to the identification element In addition the subject of the invention is a method of enhancing the forgery-proof nature of such a laminate body in which the laminate body is irradiated by means of a laser so that produced in the laser-sensitive layer is a laser-induced marking positioned in accurate register relationship with the position of the identification element.Type: ApplicationFiled: April 3, 2003Publication date: February 5, 2004Inventors: Norbert Lutz, Gerhard Zinner
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Patent number: 6659508Abstract: A security document, banknote, bond, travellers check, passport or token, including a substrate (1), said substrate having a device including a first macro-embossing (2, 3) of the substrate having a predetermined feature, and a second micro-embossing of smaller dimensions formed in or on said predetermined feature of said embossing. The first embossing being formed to hide and reveal said second embossing at predetermined viewing angles &agr;, &bgr;. The macro-embossing may comprise lines having a height of about 20 microns and a spacing of 80 microns, and the micro-embossing in the form of lines or dots (4) to a height of about 2 to 5 microns. The lines have a predetermined height (H) and a predetermined spacing (S) such that the ratio S:H is typically from about 6:1 to 2:1.Type: GrantFiled: July 24, 2001Date of Patent: December 9, 2003Assignee: Note Printing Australia LimitedInventors: Joshua Robert Nemeth, Wayne Kevin Jackson
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Publication number: 20030211297Abstract: A lithographic projection apparatus having at least two substrate holders is controlled to reduce effects of differences in images caused by differences between the two substrate holders. The apparatus includes an internal or external detector that identifies a substrate and associates it with a respective one of the substrate holders. A controller ensures that either the substrate is processed on the appropriate holder or that correction is applied to the imaging. In an alternate embodiment, the substrate is associated with a respective one of the substrate holders and is consistently processed using that substrate holder without further identification steps.Type: ApplicationFiled: April 7, 2003Publication date: November 13, 2003Applicant: ASML NETHERLANDS, B.V.Inventors: Harm Roelof Rossing, Marinus Aart Van Den Brink, Richard Alexander George
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Patent number: 6641874Abstract: The invention relates to multilayer reflective films and pigments showing selective reflection of light wherein the reflection characteristics are dependent on the viewing angle, characterized in that they comprises at least one reflective layer, at least one circular polarizing layer and optionally at least one optical retardation layer. The invention further relates to the use of these multilayer reflective films and pigments in optical elements, as coatings or in lacquers, inks or paints for cosmetic, decorative or security applications, to inks and paints comprising one or more multilayer reflective pigments dispersed in a light transmissive binder, and to security markings or devices comprising one or more multilayer reflective films or pigments.Type: GrantFiled: March 2, 2001Date of Patent: November 4, 2003Assignee: Merck Patent Gesellschaft mit beschraenkter HaftungInventors: Matthias Kuntz, Hans-Dieter Brueckner, David Coates, Rodney Riddle
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Publication number: 20030186040Abstract: A near infrared screening film which consists of a biaxially oriented film made from a polyester containing a near infrared light absorber having a weight reduction start temperature of at least 280° C.Type: ApplicationFiled: February 21, 2003Publication date: October 2, 2003Inventor: Taro Oya
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Patent number: 6592972Abstract: A security imprint (4) is interposed between a protective film (2) of synthetic material and a surface (8) of an object (9) to be protected, onto which surface the film is glued by means of an adhesive (3). The security imprint (4) includes an ink composition having at least one pigment, a bonding agent, and a soluble agent. The soluble agent dissolves in a solvent that is intended to release the adhesive (3) and produces a visible stain.Type: GrantFiled: January 17, 2001Date of Patent: July 15, 2003Inventor: François Trantoul
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Patent number: 6582801Abstract: An eye-catching bold sign and method of making same wherein the sign has a digital, near-photographic image applied, using a digital file, to a transparent polymeric substrate. The sign further incorporates solid block or defined shapes that may be transparent, translucent, semi-translucent, or opaque. The shapes are defined by the same digital file and may be formed by layers of metallic or non-metallic paint, adhesive vinyl sheet, or discreet portions of either paint or vinyl sheet. The shapes are defined by selective removal of areas of an opaque backing.Type: GrantFiled: August 3, 2000Date of Patent: June 24, 2003Assignee: Optima Graphics, Inc.Inventor: Anthony J. Schmitt
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Publication number: 20030091751Abstract: There are disclosed; an active energy beam curing type conductive paste, containing a conductive substance, and an active energy beam polymerizable compound, wherein a cured matter, obtained when a composition of the paste excluding the conductive substance is cured with an electron beam having an acceleration voltage of 150 kV and an irradiated dose of 40 kGy, has an internal stress of 5 to 50 Mpa; a production method and a device for a conductor circuit substrate using the active energy beam curing type conductive paste; and a non-contact ID using the active energy beam curing type conductive paste and a production method for the ID.Type: ApplicationFiled: August 21, 2002Publication date: May 15, 2003Inventors: Hiroaki Tsuruta, Minoru Nakamura, Masanori Akita, Koji Ito, Toshihiro Mori
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Publication number: 20030087068Abstract: A dynamic reimageable document or electric paper can be formed from ordinary substrates such as paper, transparencies or fabric by printing of microencapsulated Gyricon beads onto one or more discrete surface areas of the substrate. The substrate can include both fixed print regions formed by conventional fixed ink processes and dynamic reimageable regions formed by the Gyricon beads. The Gyricon beads are preferably bichromal and of contrasting colors, such as black/white so as to be changeable to display two states by selective application of electromagnetic force to the beads. By providing bichromal beads in differing color combinations, such as red/white and black/white, a multi-colored document can be achieved in which various fields of the document, representing text, images or graphics, may be in differing colors. Moreover, operations to perform both imaging or erasure can act on the discrete reimageable regions so that the versatility of the electric paper can be enhanced.Type: ApplicationFiled: November 6, 2001Publication date: May 8, 2003Applicant: XEROX CORPORATIONInventors: Naveen Chopra, Steven Georges, Peter M. Kazmaier, Sammy Y.H. Ro, Man C. Tam, Francisco E. Torres, Sophie V. Vandebroek
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Patent number: 6523859Abstract: Confidential information is printed on an upper transparent laminate. A scrambling pattern is associated with a lower laminate. The upper surface of the lower laminate and the lower surface of the upper laminate are complementary in shape such that the upper laminate appears transparent, but alters to appear translucent when separated from the lower laminate. This provides a tamper-evident mechanism for indicating separation of the laminates.Type: GrantFiled: September 14, 2001Date of Patent: February 25, 2003Assignee: Documotion Research, Inc.Inventors: Bernard Willem “Wim” Scheggetman, Chuck Casagrande, Joel Bryan Van Boom
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Publication number: 20030035936Abstract: A planographic printing plate precursor comprising a support and a cross-linking hydrophilic layer disposed thereon, which cross-linking hydrophilic layer has a cross-linking structure and includes a hydrophilic high molecular compound having a hydrophilic graft chain. The planographic printing plate precursor is characterized by the cross-linking hydrophilic layer being produced by reacting a hydrophilic high molecular compound having, on the backbone polymer thereof, a group which is able to react with a cross-linking agent, with the cross-linking agent. In the present invention, an image forming layer may be provided on the cross-linking hydrophilic layer. The cross-linked hydrophilic layer may include a compound which is able to form a hydrophobic surface region of the cross-linking hydrophilic layer when exposed to heat or radiation.Type: ApplicationFiled: April 9, 2002Publication date: February 20, 2003Inventors: Miki Takahashi, Koichi Kawamura
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Patent number: 6506476Abstract: The invention concerns a printed valuable document with at least one authentication feature in the form of a luminescent substance based on a host lattice doped with at least one rare earth metal. The host lattice largely absorbs in the visible region of the spectrum, is excitable at least in parts of the visible region of the spectrum and transparent at least in partial areas of the IR spectral region. The luminescent substance is present in the volume of the valuable document in such a concentration that the characteristics of the valuable document just remain unimpaired. The rare earth metal concerned is thulium.Type: GrantFiled: November 30, 1999Date of Patent: January 14, 2003Assignee: Glesecke & Devrient GmbHInventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
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Patent number: 6503603Abstract: The invention relates to a printed valuable document with at least one authenticity mark in the form of a luminescent substance based on a host lattice doped with at least one rare earth metal. The host lattice largely absorbs in the visible region of the spectrum and is excitable in the visible region of the spectrum, and is transparent in at least parts of the IR spectral region. The rare earth metal is holmium. The luminescent substance is present in the volume of the valuable document in such a concentration that the properties of the valuable document just remain unimpaired.Type: GrantFiled: December 10, 1999Date of Patent: January 7, 2003Assignee: Giesecke & Devrient GmbHInventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
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Patent number: 6503605Abstract: The present invention is directed to a decorative item. The decorative item includes a number of components which cooperate together. A layer of luminescent material is provided. The layer of luminescent material is preferably, but not necessarily, a substantially rigid and planar carrier. A translucent image is affixed to the layer of luminescent material. The decorative item is operable in a plurality of modes of operation, including an excitation mode of operation and a delayed light emission mode of operation. During the excitation mode of operation, the decorative item is exposed to a source of exciting energy, such as light. In the delayed light emission mode of operation, the layer of luminescent material generates a phosphorescent light emission, after the source of exciting energy is removed, which passes through the translucent image and makes it visible in low light conditions.Type: GrantFiled: December 7, 1999Date of Patent: January 7, 2003Inventor: Kathleen Paul-Lieberman
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Patent number: 6491324Abstract: The invention relates to a security element for protecting objects which has at least one mechanically testable magnetic layer and at least one further layer consisting of a layer semitransparent in the visual spectral region. The semitransparent layer is additionally disposed over the magnetic layer so as to cover the magnetic layer. The invention further relates to a security document with such a security element.Type: GrantFiled: April 10, 2000Date of Patent: December 10, 2002Assignee: Giesecke & Devrient GmbHInventors: Christian Schmitz, Theo Burchard
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Publication number: 20020182383Abstract: Methods and devices for producing images on coated articles are provided. The methods generally comprise applying a layer of magnetizable pigment coating in liquid form on a substrate, with the magnetizable pigment coating containing a plurality of magnetic non-spherical particles or flakes. A magnetic field is then applied to selected regions of the pigment coating while the coating is in liquid form, with the magnetic field altering the orientation of selected magnetic particles or flakes. Finally, the pigment coating is solidified, affixing the reoriented particles or flakes in a non-parallel position to the surface of the pigment coating to produce an image such as a three dimensional-like image on the surface of the coating. The pigment coating can contain various interference or non-interference magnetic particles or flakes, such as magnetic color shifting pigments.Type: ApplicationFiled: May 7, 2001Publication date: December 5, 2002Applicant: Flex Products, Inc.Inventors: Roger W. Phillips, Charlotte R. LeGallee, Charles T. Markantes, Paul G. Coombs, Matthew R. Witzman
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Patent number: 6465080Abstract: This invention relates to electrophotographic recording media that are suitable for use in high speed color copiers and printers. The media are composites comprising: a) a film substrate having a front surface coated with a toner-receptive layer and a back surface coated with a polymeric layer, and b) a paper backing that is attached to the back surface of the film substrate. The toner-receptive layer comprises a mixture of a hydrophobic toner-compatible polymer and hydrophilic toner-compatible polymer. The paper backing has a Sheffield Smoothness greater than 70 SU.Type: GrantFiled: January 24, 2001Date of Patent: October 15, 2002Assignee: Arkwright IncorporatedInventors: Linlin Xing, Betty Ann Lyon, Yongzhong Wang, Jay C. Song
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Publication number: 20020119297Abstract: An organic photosensitive optoelectronic device optimized to enhance desired characteristics such as external quantum efficiency is described. The photosensitive optoelectronic device has at least two transparent electrodes and one or more organic photoconductive layers disposed between the transparent electrodes. In other embodiments photosensitive optoelectronic devices with multilayer photoconductive structures and photosensitive optoelectronic devices with a reflective layer are disclosed.Type: ApplicationFiled: December 21, 2001Publication date: August 29, 2002Inventors: Stephen R. Forrest, Vladimir Bulovic
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Publication number: 20020090494Abstract: A color filter substrate for a liquid crystal display includes a transparent substrate, and color filters formed on the substrate each with a groove. A transparent conductive layer is deposited onto the color filters to form a common electrode. A chrome layer and a chrome oxide layer are sequentially deposited onto the common electrode to form a black matrix layer. An organic film is formed on the black matrix layer. The organic film suffers ashing such that only the portion of the organic film placed over the groove is left over, and other portions are all removed while exposing the black matrix layer. The exposed portion of the black matrix layer is removed through etching. In this way, the color filter substrate is completed in a simple manner.Type: ApplicationFiled: January 9, 2002Publication date: July 11, 2002Applicant: Samsung Electronics Co., LTD.Inventor: Jang-Kun Song
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Patent number: 6383618Abstract: The invention concerns a printed valuable document with at least one authentication mark in the form of a luminescent substance based on a host lattice doped with at least one rare earth metal. The host lattice largely absorbs light in the entire visible region of the spectrum, is excitable in substantial parts of the visible region of the spectrum, and is at least partially transparent at least in the wavelength range between 0.8 &mgr;m and 1.1 &mgr;m. The host lattice also features a garnet or perovskite structure. The rare earth metal emits light in the wavelength range between 0.8 &mgr;m and 1.1 &mgr;m.Type: GrantFiled: January 24, 2000Date of Patent: May 7, 2002Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
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Patent number: 6383637Abstract: Black magnetic iron oxide particles of the present invention having an average particle diameter of 0.1 to 0.3 &mgr;m, comprise: black spinel iron oxide particles as core particles; and a surface coat formed on the surface of each core particle, comprising fine spinel iron oxide particles, the content of FeO in a surface layer having a thickness of from a surface of each black magnetic iron oxide particle to about 3.5% per a radius of each black magnetic iron oxide particle, being 8 to 14% by weight based on the weight of Fe contained in said surface layer. Such black magnetic iron oxide particles not only have a sufficient blackness and excellent electrical properties, flowability and electrification property (charging property), but also exhibit a good compatibility with binder resins such as aromatic vinyl-based resins, acrylic-based resins and copolymer resins thereof, and a good dispersibility in these resins for a magnetic toner.Type: GrantFiled: April 13, 2000Date of Patent: May 7, 2002Assignee: Toda Kogyo CorporationInventors: Hiromitsu Misawa, Koso Aoki, Suehiko Miura, Minoru Kozawa, Naoki Uchida, Nobuya Shimo