Including Developable Image Or Soluble Portion In Coating Or Impregnation (e.g., Safety Paper, Etc.) Patents (Class 428/199)
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Patent number: 4963415Abstract: A process for determining whether a heat recoverable article has achieved sufficient temperature comprising applying to the surface of the article to be heated a composition comprising a chlorinated polymer and a zinc salt and the resultant article.Type: GrantFiled: February 11, 1985Date of Patent: October 16, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: James G. Carlson, Dean R. Yarian
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Patent number: 4944980Abstract: An optical recording material having excellent light stability, shelf stability and solubility in a solvent comprises, as an indispensable constituent, a compound of the following general formula: ##STR1## wherein R represents a cycloalkyl group having 3 to 12 carbon atoms, X.sup.- represents a halide anion, a perchlorate anion or a quencher anion, rings A and B each represent a benzene or naphthalene ring which may be substituted with a halogen atom, and n represents 1 to 4.Type: GrantFiled: July 25, 1989Date of Patent: July 31, 1990Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Mitsuo Akutsu, Syuji Iwakura, Keiji Oya
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Patent number: 4925727Abstract: A temperature indicating composition is provided for use on a recoverable article so that heating to produce recovery or to activate a heat-activatable sealant can be monitored. The composition comprises a thermochromic colorant in a binder that can be cured by UV radiation. Such a composition can be applied rapidly to polyolefin substrates by printing.Type: GrantFiled: July 30, 1982Date of Patent: May 15, 1990Assignee: Raychem CorporationInventors: Andrew V. Brown, Tamar G. Gen, Gary R. Weihe
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Patent number: 4904507Abstract: An information device comprising a substrate having applied thereto:(1) an agent which absorbs electromagnetic radiation in the infra-red to ultra-violet region of the spectrum, said agent being capable of easy removal from the substrate by physical means, and(2) a second agent which is capable of increasing the fixation of the first agent to the substrate, said second agent being applied to the substrate in a localized manner to form an invisible image which becomes detectable when the substrate is subjected to a treatment capable of selectively removing the first agent from those parts of the substrate to which the second agent has not been applied.Type: GrantFiled: May 9, 1988Date of Patent: February 27, 1990Assignee: Imperial Chemical Industries plcInventor: David Greenwood
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Patent number: 4891505Abstract: The invention concerns a security-marking procedure, an apparatus to sense a security marking, fiduciary documents provided with security markings, by resorting to rare-earth chelates consisting of at least two rare-earths and of which the fluorescence wavelengths vary as functions of temperature, and fiduciary document containing such chelate(s).Type: GrantFiled: March 20, 1989Date of Patent: January 2, 1990Assignee: PetrelInventor: Michel Jalon
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Patent number: 4847385Abstract: A cyanine dye having formula (I): ##STR1## wherein R.sup.1 represents Cl, Br or hydrogen; R.sup.2 represents Cl, Br, hydrogen, or a nitro group; R.sup.3 and R.sup.4 each represent a methyl group, an ethyl group, a propyl group or --(CH.sub.2).sub.n OR.sup.5 (in which n is an integer of 2 or 3, and R.sup.5 represents hydrogen or an acetyl group), and X.sup..crclbar. represents an acid anion, provided that the case where R.sup.3 and R.sup.4 are both an identical alkyl group, and R.sup.1 and R.sup.2 are an identical group, is excluded; andan optical information recording medium including a recording layer comprising the above cyanine dye.Type: GrantFiled: March 30, 1987Date of Patent: July 11, 1989Assignee: Ricoh Company, Ltd.Inventors: Shigeru Kusakata, Aimi Suzuki, Isao Shiojima
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Patent number: 4833311Abstract: The invention concerns a security-marking procedure, an apparatus to sense a security marking, fiduciary documents provided with security markings, by resorting to rare-earth chelates consisting of at least two rare-earths and of which the fluorescence wavelengths vary as functions of temperature, and fiduciary document containing such chelate(s).Type: GrantFiled: July 16, 1987Date of Patent: May 23, 1989Assignee: PetrelInventor: Michel Jalon
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Patent number: 4816321Abstract: An electrosensitive substrate from which a metallized surface layer is selectively removed using electrosensitive printing to expose a patterned underlayer. The patterned underlayer may be randomly exposed, or exposed in prescribed portions. Tags, labels or the like of this description may be electrically imprinted with unique identification codes, such as serially printed alphanumeric characters. Such tags and labels resist duplication by conventional printing techniques. The patterned underlayer may be imprinted using inks of a variety of surface textures, resulting in an embossed effect in the metallized surface. Alternatively, a lacquer layer may be provided between the patterned layer and the metallized surface to achieve a uniform appearance of the metallized surface.Type: GrantFiled: September 23, 1983Date of Patent: March 28, 1989Assignee: Dennison Manufacturing CompanyInventor: John H. Pickering
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Patent number: 4816322Abstract: An electrosensitive substrate from which a metallized surface layer is selectively removed using electrosensitive printing to expose a patterned underlayer. The patterned underlayer may be randomly exposed, or exposed in prescribed portions. Tags, labels or the like of this description may be electrically imprinted with unique identification codes, such as serially printed alphanumeric characters. Such tags and labels resist duplication by conventional printing techniques. The patterned underlayer may be imprinted using inks of a variety of surface textures, resulting in an embossed effect in the metallized surface. Alternatively, a lacquer layer may be provided between the patterned layer and the metallized surface to achieve a uniform appearance of the metallized surface.Type: GrantFiled: November 2, 1981Date of Patent: March 28, 1989Assignee: Dennison Manufacturing CompanyInventor: John H. Pickering
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Patent number: 4810562Abstract: An image changeable sheet with water characterized in that an opaque film comprising a transparent film and a water-absorbable coating layer formed on one side of the transparent film and containing a pigment composed mainly of a white pigment with a refractive index of not more than 1.7 is adhered to a base paper having an image on the colored surface, and a surface image is provided on the coating layer, said surface image being an image whose color matches the color of the colored surface and/or the image of the base paper seen through via water absorption.Type: GrantFiled: April 28, 1987Date of Patent: March 7, 1989Assignee: Mishima Paper Co., Ltd.Inventors: Takayuki Okawa, Shigeaki Imai
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Patent number: 4774157Abstract: This invention resides in a counter-current diffusion method for the formation of a metallic interlayer within a matrix, for example, a polymeric matrix, by controlling the permeability of the matrix, the permeability preferably being controlled by controlling matrix swelling.Type: GrantFiled: May 19, 1987Date of Patent: September 27, 1988Assignee: E. I. Du Pont De Nemours and CompanyInventor: Lewis E. Manring
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Patent number: 4735839Abstract: An optical information recording medium comprises a plastic substrate and a recording layer containing an indole type polymethine compound wherein the substituents attached to N atoms in the indole and indolene rings must be different from each other. The compound provides high solubility in alcoholic solvents, high storage stability (light resistance, heat resistance, etc.) and the like.Type: GrantFiled: June 26, 1986Date of Patent: April 5, 1988Assignee: Ricoh Co., Ltd.Inventors: Tsutomu Sato, Tatsuya Eida, Keiko Ichinose
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Patent number: 4728561Abstract: A shaped article formed from a polyarylether is coated on at least part of one surface thereof with a polyester resin containing free sulphonate groups. The polyarylether can be a polyarylether-sulphone or a polyaryletherketone such as polyaryletheretherketone. The shaped article can be a sheet or a film. The coated article may have further coatings applied, for example the coated article may be metallized.Type: GrantFiled: November 26, 1985Date of Patent: March 1, 1988Assignee: Imperial Chemical Industries PLCInventor: Christopher Crocker
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Patent number: 4714631Abstract: An undercoating for the vacuum deposition of material thereover that can be removed from a substrate by washing with water for one minute or less comprising a water soluble film-forming polymers, a solubility accelerator and a solid particulate material that provides a rough surface topology to the undercoating when dried.Type: GrantFiled: September 29, 1986Date of Patent: December 22, 1987Assignee: W. H. Brady Co.Inventor: Brian E. Aufderheide
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Patent number: 4680205Abstract: A web structure with electromagnetic radiation shifting indicia is disclosed. The indicia provide signals used in controlling various processes to be performed on the web as well as for controlling movement of the web. The preferred indicia are normally essentially invisible so that the physical appearance of the web is not affected. The indicia emit wave-shifted electromagnetic radiation in response to incident radiation of a given range to provide a means for determining the positioning of the web during movement as the processes are performed. Process and apparatus for making and using such webs are also disclosed.Type: GrantFiled: September 12, 1983Date of Patent: July 14, 1987Assignee: Automated Packaging Systems, Inc.Inventors: Hershey Lerner, Bernard Lerner
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Patent number: 4618402Abstract: The paper according to the invention contains a non-fluorescent means against chemical falsification, reacting to the oxidizing agent/reducing agent couple. The paper according to the invention contains iron(III) and a product giving a complex colored with iron(II). Any attempt to falsify by chemical means provokes the reduction of the iron(III) into iron(II) immediately followed by the formation of the colored complex. According to the invention, the complexing agent is preferably 2,2-bipyridyl. Another complexing agent is orthophenantroline.Type: GrantFiled: July 24, 1985Date of Patent: October 21, 1986Assignee: Arjomari-PriouxInventor: Michel Camus
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Patent number: 4600625Abstract: An optical information recording medium being capable of writing and reading with laser beam which comprises forming, on a transparent or opaque substrate, a thin film (recording layer) containing a cyanine coloring matter represented by the general formula: ##STR1## (wherein, R.sup.1, R.sup.2 and R.sup.3 may be the same or different, and each stands for C.sub.1 -C.sub.6 alkyl; X stands for halogen, perhalogenate, boron tetrafluoride, toluenesulfonic acid or alkylsulfonic acid; A stands for a benzene ring or a naphthyl ring and a substituent such as alkyl, alkoxy, hydroxy, carboxyl, halogen, allyl or alkylcarboxyl may be or may be not present on each ring; and n is an integer of 1-3.).Type: GrantFiled: September 18, 1984Date of Patent: July 15, 1986Assignee: Ricoh Co., Ltd.Inventors: Michiharu Abe, Hideaki Oba
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Patent number: 4594601Abstract: A fluoran compound represented by general formula: ##STR1## where each of R.sub.1 and R.sub.2 is a C.sub.1 -C.sub.4 alkyl group, a cycloalkyl group or an aryl group, or R.sub.1 and R.sub.2 may form together with N a saturated ring, R.sub.3 is a benzyl or phenyl group which may be substituted, and R.sub.4 is a C.sub.1 -C.sub.4 alkyl group.Type: GrantFiled: September 23, 1983Date of Patent: June 10, 1986Assignee: Hodogaya Chemical Co., Ltd.Inventors: Mitsutoshi Anzai, Masahiko Yamaguchi, Michihiro Gonda, Mikiko Kanasugi, Toshio Obara
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Patent number: 4564571Abstract: A transfer sheet with a color pattern having metallic luster comprising at least a transparent or semi-transparent base film, a mold-removing film layer on one side of the base film, a transparent coloring agent layer in the form of a desired pattern on the mold removing film layer, and an aluminum vapor-coated layer on the transparent coloring agent layer.A method of manufacturing such transfer sheet.Type: GrantFiled: February 21, 1984Date of Patent: January 14, 1986Inventor: Jun Masaki
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Patent number: 4554565Abstract: A method for producing a reversible thermochromic display composed of multiple, overlapping color images. In accordance with the invention, a plurality of overlapping colored image layers are formed on a support, at least one of which layers provides a reversible thermochromic image. Each of the images on the various layers has a different visual density, and at least one reversible thermochromic image changes color at a temperature below or above a predetermined temperature and provides a color which is more intense and more easily discernible than the colors of the other ones of the images.Type: GrantFiled: April 6, 1984Date of Patent: November 19, 1985Assignee: Pilot Ink Co., Ltd.Inventors: Tutomu Kito, Norikazu Nakasuji, Takashi Kataoka, Hiroshi Inagaki, Yutaka Shibahashi
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Patent number: 4540628Abstract: A composite sheet susceptible to having a water base ink applied by an ink jet printing system is provided. The sheet includes a non-absorbent substrate, such as aluminum on to which is applied a coating of hydroxypropyl cellulose dissolved in an organic solvent and containing a suitable flatting agent such as finely divided amorphous silica. The coating is applied in a thickness in the range of 3 to 25 microns. The method of preparing the composite sheet is also disclosed.Type: GrantFiled: September 30, 1982Date of Patent: September 10, 1985Assignee: John R. KozaInventors: Martin K. Oberdeck, John R. Koza
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Patent number: 4525412Abstract: An information recording medium which includes a light-transmitting substrate, a recording layer formed on the substrate, the recording layer having the characteristic of changing an optical characteristic upon heating thereof, together with a protective layer having light-absorbing properties disposed over the recording layer and arranged to absorb light passing through the recording layer upon recording, in combination with a planar layer superimposed on the protective layer and capable of suppressing mechanical deformation of the recording layer.Type: GrantFiled: November 8, 1983Date of Patent: June 25, 1985Assignee: Sony CorporationInventors: Yasuaki Nakane, Junichi Akamatsu, Susumu Sakamoto, Tadashi Kiyomiya
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Patent number: 4520063Abstract: A forgery-proof flat article, for example, for the production of banking cards, credit cards, and the like, is provided with a security feature analogous to a watermark and is made of thermoplastic and elastomeric synthetic resins based on transparent, translucent, or colored sheets made by extrusion, calendering, blow-molding, or spread coating, or composite sheets therefrom, with an application of a colorant, capable of migrating, to the surface in the presence of a crosslinkable component in the flat article and/or in the colorant application. The colorant application, upon reaching the desired migration depth of the applied colorant, is fixed in the flat article by a crosslinking reaction.Type: GrantFiled: July 20, 1982Date of Patent: May 28, 1985Assignee: Dynamit Nobel AktiengesellschaftInventors: Manfred Simon, Karl-Heinz Spiess, Richard Weiss
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Patent number: 4520064Abstract: Low cost decorative award plaques are provided which use a plastic laminate article capable of being hot stamped with desired lettering or designs. The plaque is made by a process of repeatedly imprinting with different colors and surface effects. The process includes forming and cutting the plastic on a rigid backing, especially one simulating a fine, hardwood panel.Type: GrantFiled: May 31, 1977Date of Patent: May 28, 1985Assignee: Contemporary, Inc.Inventor: James C. Kanzelberger
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Patent number: 4511642Abstract: Photo-fixing heat-sensitive recording media which comprise diazonium salts, couplers and/or basic materials, all of these components being insoluble or sparingly soluble in water. At least one of these components is present in the media in the form of a fine powder. The coupler may be a coupler which has a basic group therein and serves as both a coupler and a basic material.Type: GrantFiled: February 9, 1983Date of Patent: April 16, 1985Assignees: Nippon Telegraph and Telephone Public Corp., Tomoegawa Paper Manufacturing Co., Ltd.Inventors: Kensaku Higashi, Haruhiko Yano, Hirotsugu Sato, Ken Sukegawa, Yuji Ooba
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Patent number: 4511908Abstract: This invention relates to a plastic identification card with forgery protection with respect to embossed information. There is a problem with existing credit cards in that the forgers can change the embossed information. This problem is overcome by providing in registration with the embossed information a layer of chemicals reactive under the pressure of a change in the embossed information to release a colored dye.Type: GrantFiled: February 10, 1984Date of Patent: April 16, 1985Assignee: British American Bank Note Inc.Inventor: Edward A. Small
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Patent number: 4507352Abstract: An overwrapping film wherein a plastic base film is coated with a plastic material to form an anchor coat layer, which is, in turn, further coated with ink to form an ink layer thereon, and a metal layer is then deposited on the ink layer through the process of vacuum evaporation. The plastic base film is thermally contracted to produce a tightly-packed configuration, while the evaporated metal layer furnishes a metallic gloss to a printed display pattern provided by the ink layer.Type: GrantFiled: August 24, 1982Date of Patent: March 26, 1985Assignee: Sony CorporationInventors: Katsuhiko Shibata, Mitsuyoshi Sato
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Patent number: 4496961Abstract: A check paper is being described which is protected against falsifications and forgeries.Crushable micro capsules are being embedded in check paper which contain on one hand a leuco ink and on the other hand a color acceptor. The color acceptor can also be stored in the body of the paper without the use of micro capsules. The leuco ink and the color acceptor react together under color development or color changes if the micro capsules burst through imprinting or other local pressure application to the paper surface. Thus, a character written on the paper surface becomes visible within the body of the paper and cannot be forged anymore.Type: GrantFiled: May 10, 1982Date of Patent: January 29, 1985Assignee: GAO Gesellschaft Fur Automation Und Organisation mbH.Inventor: Ludwig Devrient
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Patent number: 4477593Abstract: The invention relates to a developable surface comprising a carrier layer having thereon at least two deposits of one or more invisible inks in adjacent or overlapping relationship, said deposits in the developed state being unresolvable.Type: GrantFiled: March 2, 1982Date of Patent: October 16, 1984Assignees: Lockley Services Pty. Ltd., Graham Charles Barry, Norman John FieldInventor: Roderick P. J. Tomlinson
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Patent number: 4460665Abstract: An optical information recording medium comprises a transparent or opaque substrate and a cyanine coloring matter-containing thin coloring matter layer formed on said substrate. This recording material is adapted for laser beam reading and writing.Type: GrantFiled: December 22, 1982Date of Patent: July 17, 1984Assignee: Ricoh Co., Ltd.Inventors: Makoto Kunikane, Michiharu Abe, Masaakira Umehara
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Patent number: 4452843Abstract: Security papers with luminescing authenticity characteristics built in or printed thereon which absorb in the visible region of the optical spectrum but in the infrared have a transparent region in which the luminophore also emits. By the absorption in the visible undesired parasitic emissions are suppressed which would make the luminophore visually evident on corresponding excitation. For testing the authenticity of the document the emission is investigated in the infrared. Suitable luminophores are rare earth metal luminophores in suitable host lattices, particularly in ferrite lattices or garnet lattices, which contain transition metal ions as absorbing elements.Type: GrantFiled: October 23, 1981Date of Patent: June 5, 1984Assignee: GAO Gesellschaft fur Automation und Organisation mbH.Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
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Patent number: 4451521Abstract: Security paper with luminescing authenticity characteristics which after excitation with invisible light emit exclusively invisible light of different wavelengths as authenticity signal. The luminophores can be included in the printing ink used or they can be added to the paper material in the manufacture of the paper material. A corresponding test apparatus makes it possible to check the authenticity of the security paper in the presence of customers but unnoticed by them; thereby the invisibility of the test signal and the authenticity signal are taken advantage of and the test device is hidden behind a plate non-transmissive for visible light which however is transmissive for the test signal and for the authenticity signal.Type: GrantFiled: October 23, 1981Date of Patent: May 29, 1984Assignee: Gao Gesellschaft fur Automation und Organisation mbHInventors: Wittich Kaule, Gerhard Stenzel
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Patent number: 4415621Abstract: Dyes conforming to the structure: ##STR1## wherein R.sub.1 is (CH.sub.2).sub.n or ##STR2## n is an integer from 0-5 and each R is independently selected from the group consisting of straight- and branched-chain alkyl groups of about 1-6 carbon atoms, have a high extinction coefficient at 488 nm and are compatible with common binders such as cellulose-nitrate. These dyes are useful in deformable recording compositions for optical recording elements, e.g., video discs.Type: GrantFiled: February 11, 1982Date of Patent: November 15, 1983Assignee: Eastman Kodak CompanyInventors: Donald P. Specht, Harold T. Thomas
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Patent number: 4399177Abstract: A supporting structure for a decalcomania wherein the decalcomania is inserted into an aqueous solution prepared by adding a reagent to water or into a quantity of mixed aqueous solution prepared by dissolving a reagent in a quantity of suitable solvent and then mixing this solution with a quantity of water and wherein a coating (6, 3A) of a water soluble separating agent is applied over the decalcomania and wherein the dissolving speed of the coat (6, 3A) is selected to be in accordance with the reaction speed of a coloration reactant or a chromogenic substance such as a dye previously added to the coating (6, 3A) of the water soluble separating agent such that a color change will be visually present when the optimum time for transfer of the decalcomania occurs.Type: GrantFiled: August 28, 1981Date of Patent: August 16, 1983Assignee: Tokyo Tokushu Insatsu Kogyo Kabushiki KaishaInventor: Tetsuya Ozasa
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Patent number: 4347264Abstract: Metal contacts are deposited on a clean surface of a silicon wafer by coating the wafer with a glass during diffusion to form a junction inwardly of the surface, applying a photoresist layer to the glass, phtographing and developing a pattern for the contacts on the photoresist layer, etching out underlying portions of the glass layer, depositing the metal contacts in the voids so created, and then removing the entirety of the photoresist and glass layers.Type: GrantFiled: June 13, 1978Date of Patent: August 31, 1982Assignee: Solarex CorporationInventor: Joseph Lindmayer
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Patent number: 4337289Abstract: A method of manufacturing a water-release transfer is disclosed in which a design in a photopolymerizable ink is applied to a substrate having a water-soluble release coating and the design is subjected to photopolymerizing radiation, e.g. ultra-violet light, to cause the ink to polymerize to a solid state. Preferably the ink comprises a mixture of a liquid unsaturated monomer and a viscous or solid prepolymer, and one or both of the monomer and prepolymer contain acryloyl or methacryloyl groups. The invention includes water-release transfers manufactured using photopolymerizable inks.Type: GrantFiled: June 6, 1980Date of Patent: June 29, 1982Inventors: Kenneth J. Reed, Alan L. Lythgoe
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Patent number: 4332872Abstract: In a device for projecting a primary image from a transparency along an optical path and for altering the image by selectively directing a writing light source reversably along the optical path toward the transparency, a transparent recording film includes a pre-recorded primary image layer and a secondary layer annotatable by the marking light. The two layers are congruent, and in one embodiment comprise superimposed substrates which are joined mechanically. In another embodiment, the two layers are coated jointly on one substrate, and in a further embodiment the two layers are intimately mixed to form one bifunctional layer. Various means are disclosed whereby the primary image layer is unaffected by the marking light, and the annotatable secondary layer is unaffected by the projection illumination.Type: GrantFiled: September 19, 1980Date of Patent: June 1, 1982Inventor: Arthur R. Zingher
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Patent number: 4330671Abstract: Copolymers of an aziridine and sulfur dioxide are disclosed which are useful as positive radiation resists for use in electron beam and x-ray lithography.Type: GrantFiled: November 14, 1980Date of Patent: May 18, 1982Assignee: RCA CorporationInventor: Thomas R. Pampalone
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Patent number: 4322466Abstract: The invention relates to a developable surface comprising a carrier layer having thereon at least two deposits of one or more invisible inks in adjacent or overlapping relationship, said deposits in the developed state being unresolvable.Type: GrantFiled: December 4, 1978Date of Patent: March 30, 1982Assignees: Lockley Services Pty. Ltd., Graham Charles Barry, Norman John FieldInventor: Roderick P. J. Tomlinson
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Patent number: 4304183Abstract: A latent image-multiple copy process wherein use is made of a stencil in which stencil openings are formed to correspond to the latent image and base sheets in combination therewith, containing an invisible, soluble, color forming component, whereby when the color forming component is depleted from the base sheet in the area underlying the stencil openings, the base sheet can be replaced for the production of additional copies without the need to provide for a new stencil.Type: GrantFiled: March 3, 1980Date of Patent: December 8, 1981Assignee: A. B. Dick CompanyInventors: Adrian M. Loria, John L. Gilson
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Patent number: 4296150Abstract: A transparent image sheet carrier for overhead-projection systems is described based upon a dark-tone colored field with image markings in bright-tone contrasting colors, including a sheet bearing a layer containing at least one acid-resistant dye for imparting the dark-tone color to the field; the dye may be discharged in the locale of the image markings by a discharge device with a simultaneous appearance in the image locale of the bright-tone contrasting color.Type: GrantFiled: April 1, 1980Date of Patent: October 20, 1981Assignee: Pelikan A.G.Inventors: Norbert Mecke, Franz U. Schmitt, Karl-Heinz Schrader, Heinke Blutschkau
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Patent number: 4288282Abstract: A metallic foil is laminated to a transparent substrate with a photopolymerizable adhesive. An outer layer of photoresist is used in etching a pattern in the foil. The etched foil itself is then used as a resist in the complete removal of the uncovered portions of the adhesive, leaving the transparency of the revealed substrate material totally unimpaired. Finally, the remaining adhesive is hardened by polymerization resulting from exposure to ultraviolet light passed through the substrate from the unlaminated side.Type: GrantFiled: September 28, 1979Date of Patent: September 8, 1981Assignee: Hewlett-Packard CompanyInventors: Lawrence E. Brown, James L. Bauer, Gerald W. Scheck
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Patent number: 4272106Abstract: Copy sheet comprising substantially transparent dye layer which can undergo color shift in response to color developer composition. Preferred dye comprises pH sensitive dye and preferred color developer comprises weak acid.Type: GrantFiled: October 10, 1979Date of Patent: June 9, 1981Assignee: Minnesota Mining and Manufacturing CompanyInventor: Bertrand Y. Auger
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Patent number: 4262083Abstract: Copolymers of an aziridine and sulfur dioxide are disclosed which are useful as positive radiation resists for use in electron beam and x-ray lithography.Type: GrantFiled: September 18, 1979Date of Patent: April 14, 1981Assignee: RCA CorporationInventors: Thomas R. Pampalone, Nitin V. Desai, Eugene S. Poliniak
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Patent number: 4228222Abstract: The heat-sensitive record material comprises a base sheet and a color developing layer formed on at least one surface of said base sheet, said color developing layer comprising electron donating color forming material and acceptor reactive with said color forming material to develop a color, said color developing layer further including as a binder water soluble resinous material having carboxyl radicals, partly in the form of magnesium salt and partly in the form of another salt.Type: GrantFiled: March 21, 1979Date of Patent: October 14, 1980Assignee: Kanzaki Paper Manufacturing Co., Ltd.Inventors: Takeshi Murakami, Teruo Nakamura, Hisanori Yagi
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Patent number: 4223060Abstract: Self-contained pressure-sensitive copying material having a coating which contains both a particulate mineral color-developing material and microcapsules enclosing a solution of a colorless color former which is reactive with the color developing material to produce a colored product, in which the particles of color developing material (e.g. an acidic clay) and optionally the microcapsules as well, are chemically treated with a protective agent to inhibit premature color development wherein the protective agent may be a self-crosslinkable polymer, such as an aminoplast polymer (e.g. a urea-formaldehyde or melamine-formaldehyde polymer), or an epichlorohydrin polymer (e.g. an aminoepichlorohydrin or an amide/aminoepichlorohydrin polymer), or an anionic surfactant (e.g.Type: GrantFiled: December 1, 1978Date of Patent: September 16, 1980Assignee: Wiggins Teape LimitedInventors: Paul R. Raine, Lawrence Westcott
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Patent number: 4218503Abstract: There is described a unique mask and method of making same. The mask is especially useful in high resolution fabrication techniques such as in making magnetic bubble domain structures, semiconductor device structures and the like. The mask includes a suitable support of appropriate density to be substantially transparent to various types of radiation such as, but not limited to, E-beams, X-rays and the like. A layer of material which is substantially opaque to the same radiation and which can have the solubility thereof changed by application of E-beams or the like is provided on the support material. The mask is exposed to the solubility changing radiation wherein a pattern is defined in the layer, the layer is etched in a non-critical etch so that the soluble portion thereof is removed and the remaining material provides a suitable pattern. To the extent necessary, a suitable auxiliary support member can be provided to the support.Type: GrantFiled: February 9, 1979Date of Patent: August 19, 1980Assignee: Rockwell International CorporationInventors: John P. Reekstin, Howard L. Glass
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Patent number: 4214249Abstract: A laser beam recording member capable of recording information by absorbing the radiation energy of a laser beam to cause a thermal melting deformation and/or evaporation removal at the portion exposed to the laser beam wherein the recording layer is composed of a non-metallic layer mainly composed of S, Se, Te or chalcogenide compounds thereof.Type: GrantFiled: September 21, 1976Date of Patent: July 22, 1980Assignee: Canon Kabushiki KaishaInventors: Masanao Kasai, Hitoshi Hanadate, Yoshioki Hajimoto, Takashi Kitamura, Kiyonobu Endo
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Patent number: 4206937Abstract: A pre-printed spirit duplicating master. A liquid ink composition composed of 40% to 62% by weight of a dye, 40% to 65% by weight of an alcohol soluble polyamid resin having a melting point in the range of 110.degree. C. to 125.degree. C., and 12% to 25% by weight of ethylene glycol is printed in reverse image on one side of a translucent paper sheet. After printing, the ink is dried to evaporate a portion of the ethylene glycol so that the dried ink contains approximately 3.0% to 6.25% by weight of ethylene glycol. The polyamid resin is soluble in alcohol so that multiple copies can be printed from the master using conventional duplicating equipment, and as the ink does not contain oils and greases there is no tendency of the ink to bleed or smear so that the masters can be bound in booklet form without the need of separating tissue sheets.Type: GrantFiled: May 15, 1978Date of Patent: June 10, 1980Assignee: George Banta Company, Inc.Inventor: Donald B. Huston
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Patent number: RE33113Abstract: A pressure-sensitive recording paper comprising a support having coated thereon a layer of color former, said color former dissolved in at least one compound represented by the following formula: ##STR1## wherein n is an integer of 1 to 8, R and R' each represent a member selected from the group consisting of alkyl groups containing one to eight carbon atoms, and a hydrogen atom, p and q represent the number of alkyl groups, p+q being an integer of 1 to 3, and R and R' may be the same.Type: GrantFiled: September 17, 1976Date of Patent: November 14, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Masataka Kiritani, Hiroharu Matsukawa, Masayuki Aoki