Dissolvable Or Removable Patents (Class 430/513)
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Patent number: 5391470Abstract: There is disclosed a silver halide photographic material containing a dispersion of a hydrophobic compound and a water-insoluble and organic solvent-soluble polymer as defined herein. The hydrophobic compound may be a dye which is photochemically inactive during storage but readily decolored and eluted in photographic processing.Type: GrantFiled: August 11, 1993Date of Patent: February 21, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Tomokazu Yasuda, Junichi Yamanouchi, Koji Tamoto
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Patent number: 5348846Abstract: The present invention provides a silver halide photographic photosensitive material which comprises a transparent support and a silver halide emulsion photosensitive layer provided thereon and a non-photosensitive layer on another side of the support on which the photosensitive layer is not provided, wherein both the photosensitive layer and the non-photosensitive layer contain dyes respectively and transmission density at 350-400 nm of the dye in the photosensitive layer is 0.15 or less and transmission density at 350-400 nm of the dye in the non-photosensitive layer is 0.40 or more.Type: GrantFiled: August 21, 1992Date of Patent: September 20, 1994Assignee: Mitsubishi Paper Mills LimitedInventors: Kunihiro Nakagawa, Seiichi Sumi, Hideaki Baba
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Patent number: 5342743Abstract: There is disclosed a silver halide photographic material which can satisfy the specific properties required for dot to dot work photographic materials and can be handled under an environment of a bright room. The silver halide photographic material comprises a support, having provided thereon at least one light-sensitive silver halide emulsion layer and having provided farther from the support than the emulsion layer a light-insensitive hydrophilic colloid layer. The light-insensitive hydrophilic colloid layer contains at least a solid dye which is dispersed in the form of fine particles and further may contain a water soluble dye. The silver halide grains contained in the light-sensitive emulsion layer have an average grain size of 0.15 .mu.m or less and contain therein at least 1.times.10.sup.-7 mole per mole of a silver of transition metal selected from the elements of groups V to VIII of the Periodic Table.Type: GrantFiled: June 30, 1992Date of Patent: August 30, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Takahiro Goto, Nobuaki Inoue
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Patent number: 5342744Abstract: A photographic material including a hydrophilic colloid layer containing a dispersion of dye is disclosed. The dye colors a specific layer in the photographic material without diffusing to other layers during storage, yet is quickly decolored or eluted during development processing.Type: GrantFiled: September 22, 1993Date of Patent: August 30, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Koji Wariishi
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Patent number: 5330883Abstract: Changing (varying, irregular) resist thickness on semiconductor wafers having irregular top surface topography or having different island sizes, affects the percent reflectance (and absorption efficiency) of incident photolithographic light, and consequently the critical dimensions of underlying features being formed (e.g., polysilicon gates). A low solvent content resist solution that can be applied as an aerosol provides a more uniform thickness resist film, eliminating or diminishing photoresist thickness variations. A top antireflective coating (TAR) also aids in uniformizing reflectance, despite resist thickness variations. The two techniques can be used alone, or together. Hence, better control over underlying gate size can be effected, without differential biasing.Type: GrantFiled: June 29, 1992Date of Patent: July 19, 1994Assignee: LSI Logic CorporationInventor: Mario Garza
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Patent number: 5316901Abstract: UV-sensitive negative acting silver halide photographic elements for contact processes which can be safely handled under white light and have increased UV exposure latitude, said elements comprising a support base, a hydrophilic colloidal silver halide emulsion layer comprising UV sensitive negative acting silver halide grains, and one or more hydrophilic colloidal layers, wherein said silver halide emulsion is reactively associated with a water-removable UV-absorbing compound having at least 80% of the absorption in the range from 350 to 400 micronmeter.Type: GrantFiled: July 13, 1992Date of Patent: May 31, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Alberto Vacca, Aldo Sgarbi
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Patent number: 5300409Abstract: A method of processing a light-sensitive silver halide photographic material is disclosed. The method comprises a processing steps of developing, fixing and a washing or stabilizing, wherein a replenishing solution for the washing or the stabilizing step is an amount of not more than 3 liters per square meter of the light-sensitive material. The photographic material comprises a support, and a hydrophilic colloidal layer on each of the both side of the support, wherein either one of the hydrophilic colloidal layers contains a dye represented by a specific chemical formula.Type: GrantFiled: November 9, 1990Date of Patent: April 5, 1994Assignee: Konica CorporationInventors: Hiroyuki Ushiroyama, Kazuhiro Yoshida
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Patent number: 5300415Abstract: The invention provides a photographic element comprising a paper substrate with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating, and at least one light sensitive silver halide emulsion above the hydrophilic colloid layer, wherein said hydrophilic colloid layer comprises a removable antihalation material and from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 um.Type: GrantFiled: July 15, 1993Date of Patent: April 5, 1994Assignee: Eastman Kodak CompanyInventors: Erika M. Sato, Peter D. Marsden
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Patent number: 5298192Abstract: Disclosed is a subbing composition for polyesters, comprising a dye, a hydrophilic colloid, and a latex, wherein said dye is dispersed in the form of fine solid grains which are substantially insoluble in water at a pH of 6 or less, and are substantially soluble in water at a pH of 8 or more, and said latex has a glass transition temperature of 35.degree. C. or lower, and a method for coating thereof. In addition, a subbing layer-coated article is disclosed wherein said subbing composition is coated on a polyester base. Finally, a silver halide photographic material is disclosed wherein a photographic emulsion layer is coated on said subbing layer-coated article.Type: GrantFiled: May 10, 1993Date of Patent: March 29, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Hattori, Nobuyuki Sugiyama, Akira Hatakeyama
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Patent number: 5298381Abstract: A direct positive type silver halide photographic light-sensitive material is disclosed, having improved safelight stability and which is capable of providing an image having excellent photographic properties. The light-sensitive material comprises a support having thereon at least one pre-fogged light-sensitive silver halide emulsion layer and at least one light-insensitive hydrophilic colloid layer provided farther from the support than the light-sensitive silver halide emulsion layer. The light-insensitive hydrophilic colloid layer contains a dye dispersed therein in the form of microcrystalline particles.Type: GrantFiled: March 5, 1992Date of Patent: March 29, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuaki Inoue, Takahiro Goto
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Patent number: 5278037Abstract: There is disclosed a silver halide photographic light-sensitive material containing a dye which can be decolored or eluted without causing a stain problem attributable to a residual color, wherein the light-sensitive material comprises a support, having provided thereon at least one light-sensitive silver halide emulsion layer and at least one hydrophilic colloid layer containing a dispersed solid form of a dye, wherein the dye is dispersed in fine particles with an anionic polymer.Type: GrantFiled: April 24, 1992Date of Patent: January 11, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Yukio Karino
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Patent number: 5266452Abstract: A photographic element containing a thermal-dye-bleach construction includes a thermal nucleophile-generating agent in association with a polymethine dye having a nucleus of general formula (I): ##STR1##Type: GrantFiled: April 30, 1992Date of Patent: November 30, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jonathan P. Kitchin, Mark P. Kirk, Dian E. Stevenson, Randall H. Helland
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Patent number: 5252443Abstract: An asymmetrical radiographic element is disclosed comprised of a transparent film support, green sensitized silver halide emulsion layer units of differing sensitometric characteristics coated on opposite sides of the film support, and a processing solution decolorizable means for reducing crossover to less than 10 percent. The element is positioned between intensifying screens and mounted in a cassette for exposure to X-radiation. A processing solution decolorizable pentamethineoxonol dye with insignificant absorption at 550 nm is incorporated into an overcoat layer to distinguish which of the emulsion layer units is positioned nearest a source of X-radiation during exposure.Type: GrantFiled: February 3, 1992Date of Patent: October 12, 1993Assignee: Eastman Kodak CompanyInventor: Robert E. Dickerson
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Patent number: 5232825Abstract: Disclosed is a subbing composition for polyesters, comprising a dye, a hydrophilic colloid, and a latex, wherein said dye is dispersed in the form of fine solid grains which are substantially insoluble in water at a pH of 6 or less, and are substantially soluble in water at a pH of 8 or more, and said latex has a glass transition temperature of 35.degree. C. or lower, and a method for coating thereof. In addition, a subbing layer-coated article is disclosed wherein said subbing composition is coated on a polyester base. Finally, a silver halide photographic material is disclosed wherein a photographic emulsion layer is coated on said subbing layer-coated article.Type: GrantFiled: April 3, 1992Date of Patent: August 3, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Hattori, Nobuyuki Sugiyama, Akira Hatakeyama
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Patent number: 5229262Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide photographic emulsion layer containing at least one sensitizing dye represented by formula (I) and at least one compound represented by formula (II). ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represent an alkyl group which may be substituted and at least one of R.sub.1 and R.sub.2 is an acetylaminoalkyl group or an N-alkylcarbamoylaminoalkyl group; and V.sub.1 and V.sub.2, which may be the same or different, each represent a hydrogen atom, an alkyl group, an alkoxy group or a trifluoromethyl group. ##STR2## wherein Z represents a non-metallic atomic group required for forming a heterocyclic ring; M represents a hydrogen atom, an --NH.sub.Type: GrantFiled: December 16, 1991Date of Patent: July 20, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsutomu Arai, Yuji Mihara, Masaki Okazaki
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Patent number: 5227285Abstract: A silver halide photographic element is described, including a support having on one surface thereof(A) a subbing layer composed of(1) at least one non-hydrophilic polymer layer and(2) a hydrophilic colloid layer containing a dye dispersed therein in a solid state,wherein the hydrophilic colloid layer is coated on the non-hydrophilic polymer layer, and(B) at least one silver halide emulsion layer having a hydrophilic colloid as a binder,wherein the at least one silver halide emulsion layer is formed on the subbing layer, andhaving on the surface of the support opposite to the side having the silver halide emulsion layer(C) a light-insensitive hydrophilic colloid layer having a hydrophilic colloid as a binder,wherein the silver halide photographic material has a hydrophobic polymer layer which is positioned on the side of the support having the light-insensitive hydrophilic colloid layer and which is located further from the support than the light-insensitive hydrophilic colloid layer, andwherein the light-insType: GrantFiled: October 1, 1992Date of Patent: July 13, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Hattori, Akira Hatakeyama
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Patent number: 5227284Abstract: A novel silver halide photographic material is provided comprising on a support at least one silver halide emulsion layer, wherein the emulsion layer or other hydrophilic colloidal layers comprise at least one compound represented by ty the general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom or a substituent; W represents a carbon atom or a nitrogen atom; Z represents --Y.sub.1 (R.sub.3).sub.n0 or R.sub.3 (in which R.sub.3 represents a hydrogen atom or a substituent); n.sub.0 and n.sub.1 each represents an integer O or 1; 1 represents an integer 1 or 2; R.sub.1, R.sub.2 and R.sub.3 may be connected to each other to form a carbon ring or a heterocyclic group; Y.sub.1 represents ##STR2## (in which R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 each represents a hydrogen atom or a substituent) when n.sub.1 is 1 or represents a cyano group or a nitro group when n.sub.1 is 0; X represents --SO.sub.2 -- or --SO.sub.3 --; and D represents a photographic dye portion.Type: GrantFiled: October 30, 1991Date of Patent: July 13, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Tetunori Matushita, Yukio Karino, Hisashi Okamura, Morio Yagihara
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Patent number: 5213954Abstract: UV-sensitive negative acting silver halide photographic elements are used in contacting processes, and especially dry etch correction processes and can be safely handled under white light. These elements comprise a support base, a negative acting hydrophilic colloidal silver halide emulsion layer comprising photographic silver halide grains, and one or more hydrophilic colloidal layers, wherein said silver halide emulsion support base has on its surface most distant from the layer an antihalation layer comprising a water-removable UV-absorbing compound having significant absorption in the range of from 350 to 400 nm.Type: GrantFiled: November 19, 1990Date of Patent: May 25, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Wayne W. Weber, II, Donald W. Heseltine
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Patent number: 5204236Abstract: The improved silver halide photographic material is provided which contains a compound of the general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group, an aryl group, an alkenyl group or a heterocyclic group; Z.sub.1 and Z.sub.2 each represents a non-metallic atomic group necessary for forming a 5- to 7-membered ring; X.sub.1 and X.sub.2 each represents an oxygen atom, a sulfur atom or .dbd.N-R.sub.3 ; R.sub.3 is a hydrogen atom, an alkyl group, an aryl group, an alkenyl group, a heterocyclic group or --OR.sub.4 ; R.sub.4 represents a hydrogen atom, an alkyl group, an aryl group, an alkenyl group or a heterocyclic group; L.sub.1 to L.sub.5 each represents a methine group; and n.sub.1 and n.sub.2 each represents an integer of 0, 1 or 2.Type: GrantFiled: February 27, 1992Date of Patent: April 20, 1993Assignee: Konica CorporationInventors: Yasuhiko Kawashima, Reiko Yamauchi
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Patent number: 5188928Abstract: A novel silver halide photographic material is provided comprising at least one silver halide emulsion layer on a support, wherein the emulsion layer or other hydrophilic colloidal layers comprise at least one compound represented by formula (I): ##STR1## wherein W represents .dbd.N-- or ##STR2## in which R.sub.1 represents a hydrogen atom or a substituent; R.sub.0 represents an alkyl group containing 10 or more carbon atoms or an aromatic group containing 12 or more carbon atoms; Z represents an atomic group which can form a heterocyclic group or a carbon ring; Y represents ##STR3## wherein R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and R.sub.7 each represents a hydrogen atom or a substituent; X.sub.1 represents a divalent group connected to carbon atom via a hetero atom contained therein; D represents a photogragraphic dye portion connected to X.sub.1 via a hetero atom contained therein; A represents a water-solubilizing group; m.sub.1 represents an integer 0 or 1; and n represents an integer 2 or more.Type: GrantFiled: October 30, 1991Date of Patent: February 23, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Yukio Karino, Tetunori Matushita
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Patent number: 5158865Abstract: Novel photographic filter dyes are immobile as incorporated in a photographic element, but during processing, are uniformly converted to a form which is removable from the element. 2 The filter dye is represented by the structure:DYE--LS--BALwhere:BAL is a ballast group;DYE is a filter dye moiety;LS is a splittable linking group attached to a position in DYE that is not in conjugation with the dye chromophore.Type: GrantFiled: December 20, 1990Date of Patent: October 27, 1992Assignee: Eastman Kodak CompanyInventors: John W. Harder, Peter R. Seoane, Michael P. Youngblood
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Patent number: 5124242Abstract: A silver halide photographic material comprising a support having on at least one side thereof an undercoat polymer layer, a dye layer comprising hydrophilic colloid and a dye capable of being decolorized during development, and at least one silver halide emulsion layer in that order from the side of the support, wherein hydrophilic colloid in the dye layer is present at a coating weight of not more than about 0.5 g/m.sup.2 and the dye layer is dried at a temperature in the range of from about 80.degree. to about 160.degree. C.Type: GrantFiled: January 16, 1991Date of Patent: June 23, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Hattori, Koichi Suematsu, Shigeru Ohno
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Patent number: 5077184Abstract: A silver halide photographic material comprising a support provided with an undercoat layer and having thereon at least one silver halide emulsion layer and at least one dye-containing hydrophilic colloid layer between the emulsion layer and the undercoat layer, wherein the dye contained in the dye-containing hydrophilic colloid layer absorbs light in the light-sensitive region of the silver halide emulsion layer and is decolorized during the course of development, the dye-containing hydrophilic colloid layer has a swelling ratio of not higher than 180%; the coating weight of the hydrophilic colloid of the dye-containing hydrophilic colloid layer is not more than 0.5 g/m.sup.2 ; the undercoat layer comprises a hydrophobic polymer, and at least on hydrophilic colloid layer is provided between the dye-containing hydrophilic colloid layer and the undercoat layer.Type: GrantFiled: January 16, 1991Date of Patent: December 31, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Hattori, Koichi Suematsu, Shigeru Ohno
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Patent number: 5057406Abstract: Silver halide photographic material having a hydrophilic colloidal layer that contains at least one cyanine dye with a 3H-pyrolopyridine, 4H-thienopyrrole, 6H-thienopyrrole, 4H-furopyrrole or 6H-furopyrrole nucleus which has in its dye molecule at least two acid groups or at least two substituents each having at least one --CH.sub.2 CH.sub.2 OR group (where R is a hydrogen atom or an alkyl group).Type: GrantFiled: May 4, 1989Date of Patent: October 15, 1991Assignee: Konica CorporationInventors: Yasushi Usagawa, Nobuaki Kagawa, Kazuhiro Yoshida
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Patent number: 4977070Abstract: Support layers for photosensitive media comprise reflective sheeting which is transparentizable. The properties of the support layer enable it to act as an antihalation layer.Type: GrantFiled: May 20, 1986Date of Patent: December 11, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: John M. Winslow
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Patent number: 4904565Abstract: A high-contrast photographic element is disclosed comprising a support having thereon in order, a layer comprising a filter dye (A), at least one silver halide emulsion layer having a gamma of at least 10, and a layer comprising a filter dye (B), which is the same as or different from dye (A), wherein filter dyes (A) and (B) absorb light in the region of the spectrum to which the silver halide emulsion layer is sensitive.Type: GrantFiled: January 23, 1989Date of Patent: February 27, 1990Assignee: Eastman Kodak CompanyInventors: Ronald J. Schmidt, Hermano P. Rocha
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Patent number: 4695531Abstract: A light-sensitive silver halide element for radiographic use with intensifying screens has coated on at least one side of a transparent base at least a spectrally sensitized silver halide emulsion layer and, coated between the base and a silver halide emulsion layer, a hydrophilic colloid layer containing a water-soluble acid dye capable of being decolorized during the photographic processing, said dye having its absorption in a region of the electromagnetic spectrum corresponding to the spectral sensitivity of the silver halide emulsion, associated with a basic polymeric mordant which comprises repeating units of formula: ##STR1## wherein R.sub.1 is hydrogen or a methyl group, A is a --COO-- or --COO--alkylene group, R.sub.2 is hydrogen or a lower alkyl group and X is an anion.The invention allows the use of low coverage weights of silver halide light-sensitive elements and provides x-ray images with a favorable image quality and sensitivity ratio.Type: GrantFiled: July 17, 1986Date of Patent: September 22, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gerolamo Delfino, Simone Franco, Cesare Verdi
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Patent number: 4587195Abstract: A method of processing a silver halide photographic material using a color developer containing at least two kinds of triazylstilbene brightening agents having maximum fluorescent wavelengths at least 4.mu. apart, said material containing a sensitizing dye and an antiirradiation dye.Type: GrantFiled: April 10, 1985Date of Patent: May 6, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Ishikawa, Shigeharu Koboshi, Masayuki Kurematsu
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Patent number: 4581323Abstract: A photothermographic element comprising a reflective base having coated thereon one or more layers constituting a photothermographic imaging medium in which a bleachable antihalation medium is coated over said photothermographic imaging medium, the components of the antihalation medium being in non-reactive association with components in the photothermographic imaging medium. The topcoat antihalation layer allows a wide latitude in the selection of dye bleach systems and binders and surprisingly is at least as effective as the use of antihalation underlayers.Type: GrantFiled: March 12, 1984Date of Patent: April 8, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventors: Michael G. Fisher, Gebran J. Sabongi, Stephen S. C. Poon
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Patent number: 4563406Abstract: There is disclosed a light-sensitive silver halide photographic material having a white pigment containing layer and at least one silver halide emulsion layer provided successively on a support, being characterized in that there is provided a colorant containing layer capable of being made substantially colorless by a photographic treatment between said support and said white pigment containing layer. The present invention provides a light-sensitive silver halide photographic material having a reflective support improved to a great extent in sharpness substantially without bringing about lowering in sensitivity.Type: GrantFiled: July 12, 1984Date of Patent: January 7, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Keiji Ohbayashi, Kaoru Onodera
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Patent number: 4477559Abstract: There is disclosed a photosensitive silver halide color photographic material comprising a support having on one side thereof, an antihalation layer, a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer wherein each of said silver halide emulsion layers contains a non-diffusable coupler. The other surface of the support has thereon a dye-containing backing layer. The antihalation layer contains no more than 0.2 g/m.sup.2 of silver and the total amount of silver contained in the silver halide emulsion layers is at least 7.0 g/m.sup.2.Type: GrantFiled: February 22, 1983Date of Patent: October 16, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Iwamuro, Kenji Kumashiro
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Patent number: 4477562Abstract: A photothermographic element having a strippably-adhered, radiation-absorbing, antihalation layer is disclosed. The element comprises at least one imageable layer adhered to one surface of a support base, and an antihalation layer having a resistance greater than 1500 ohms per square, strippably adhered to any exposed surface of said element, said antihalation layer having a delaminating resistance in the range of 6 to 50 g/cm, a layer strength in g/cm greater than its delaminating resistance, and an optical density of at least 0.1.Type: GrantFiled: May 24, 1983Date of Patent: October 16, 1984Assignee: Minnesota Mining and Manufacturing CompanyInventor: Jeanine I. Zeller-Pendrey
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Patent number: 4446227Abstract: The new compounds of the general formula ##STR1## where R.sub.1 is hydrogen, alkyl or cyclic alkyl, R.sub.2 and R.sub.3 are each hydrogen, alkyl, a carboxylic acid, ester or amide group or cyano, and R.sub.4, R.sub.5 and R.sub.6 are each alkyl or aryl, are useful as antihalation dyes and as image dyes in photographic materials for dye-bleaching processes.Type: GrantFiled: September 20, 1982Date of Patent: May 1, 1984Assignee: Ciba-Geigy AGInventor: William E. Long
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Patent number: 4429038Abstract: A yellow silver sol containing a binder is concentrated by flocculation in the presence of a calcium-free gelatin, a water-soluble chloride being added to the flocculation and/or after the redispersion.Type: GrantFiled: July 26, 1982Date of Patent: January 31, 1984Assignee: Agfa Gevaert AktiengesellschaftInventors: Franz Moll, Ingeborg Holl
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Patent number: 4409316Abstract: Photothermographic imaging elements are provided with strippable layers which have electrical conductivity in the range of 60 to 1,500 ohms/square. The elements may be exposed to radiation and then thermally developed by applying a voltage across the strippable layer which becomes resistively heated. After development, the strippable layer may be removed.Type: GrantFiled: February 26, 1982Date of Patent: October 11, 1983Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jeanine I. Zeller-Pendrey, Mark C. Skinner, David A. Morgan
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Patent number: 4376162Abstract: A heat-developable photosensitive material is disclosed having a high image sharpness. The material is comprised of a heat-developable photosensitive layer which includes an organic silver salt, a photocatalyst, and a reducing agent. An antihalation layer is provided on the opposite face of the material with respect to the side intended for imagewise exposure. The antihalation layer contains a photosensitive halogen-containing compound which reduces the pH of the antihalation layer by photolysis and is colored with a dye which causes a change of color when the pH of the antihalation layer is reduced.Type: GrantFiled: October 19, 1981Date of Patent: March 8, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Ken Kawata, Isamu Itoh, Misao Awata, Takao Masuda
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Patent number: 4345017Abstract: The present invention is concerned with photographic products and processes employing certain pH-sensitive xanthene compounds as light-screening dyes, which compounds may be represented by the formulae ##STR1## wherein A and A', the same or different, are selected from ##STR2## each R is hydrogen or an electron-withdrawing group; each R.sup.1 is hydrogen or alkyl; each R.sup.2 is hydrogen, alkyl or an electron-withdrawing group; R.sup.3 is hydrogen or alkyl; R.sup.4 is alkyl; and n is 0 or 1 and which compounds in their colored, i.e., ring-opened form may be represented by the formulae ##STR3## wherein A, A', R.sup.3, R.sup.4 and n have the same meaning given above and Z is an anion.Type: GrantFiled: October 6, 1980Date of Patent: August 17, 1982Assignee: Polaroid CorporationInventors: Richard L. Cournoyer, James W. Foley
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Patent number: 4341855Abstract: Photographic elements are provided with a magnetic stripe that is useful for sound recording by applying a magnetic striping composition, containing finely-divided magnetic particles and an acrylated epoxy resin, over the anti-halation layer of the element. The striping composition penetrates the anti-halation layer to contact the support and is cured to an alkali-insoluble cross-linked stripe which is composite with the anti-halation layer and strongly bonded to the support so as to resist removal by alkaline photographic processing solutions.Type: GrantFiled: June 18, 1980Date of Patent: July 27, 1982Assignee: Eastman Kodak CompanyInventors: Edward D. Morrison, Harry J. Krall, David L. Carr, Chen-i Lu
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Patent number: 4329411Abstract: The sensitometric properties of multicolor diffusion transfer film units may be modified after the photosensitive element has been coated. Sensitometric modification is effected by a photoexposure through a layer of a color correction dye(s). In a preferred embodiment, the color correction dye(s) is bleachable and is contained in a layer over the image-receiving layer.Type: GrantFiled: March 21, 1980Date of Patent: May 11, 1982Assignee: Polaroid CorporationInventor: Edwin H. Land
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Patent number: 4316950Abstract: In one embodiment, the present invention is concerned with novel xanthene compounds of the formula ##STR1## wherein each R.sup.1 the same or different is hydrogen or alkyl, each R.sup.2 the same or different is alkyl or phenyl, R.sup.3 is phenyl or alkyl, Y is an electron-withdrawing group and A is an anion. In another embodiment, the present invention is concerned with photographic products and processes employing these xanthene compounds.Type: GrantFiled: December 26, 1979Date of Patent: February 23, 1982Assignee: Polaroid CorporationInventors: Louis Cincotta, James W. Foley
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Patent number: 4311787Abstract: Light-sensitive photographic silver halide material comprising a hydrophilic colloid layer containing in dispersed state a light-absorbing merostyryl dye that corresponds to the following general formula: ##STR1## in which: R.sup.1 is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, aralkyl or substituted aralkyl,R.sup.2 is carboxy, alkoxycarbonyl, aryloxycarbonyl, carbamoyl, ureido, sulphamoyl or one of the groups represented by R.sup.1 ;at least one of R.sup.1 and R.sup.2 being or containing carboxy or carbamoyl,R.sup.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, and when R.sup.3 is alkyl or alkoxy it stands in ortho or para in respect of the hydroxy group, which itself is in ortho or para in respect of the methine group,said merostyryl dye containing no group that renders the dye soluble in the hydrophilic colloid layer.Type: GrantFiled: June 11, 1980Date of Patent: January 19, 1982Assignee: Agfa-Gevaert, N.V.Inventors: Raymond G. Lemahieu, Felix J. Moelants, Frans J. Ville
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Patent number: 4271263Abstract: Acutance agents for use in thermally developable photosensitive compositions are disclosed. These novel compositions absorb scattered light and are rendered colorless at the development temperature of the photothermographic composition.Type: GrantFiled: May 15, 1980Date of Patent: June 2, 1981Assignee: Minnesota Mining and Manufacturing CompanyInventor: Edward J. Goettert
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Patent number: 4268622Abstract: A silver halide photographic light-sensitive material having on a support a hydrophilic colloidal layer containing a basic polymer, and at least one styryl or butadienyl dye represented by the following general formula (I) and having at least three sulfo groups in a dye molecule: ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group; R.sub.3 represents an unsubstituted or substituted alkyl or alkenyl group; L represents --O--Y--SO.sub.3 M or ##STR2## in which Z.sub.1 and Z.sub.2, which may be the same or different, each represents a hydrogen atom, an unsubstituted or substituted alkyl group, an alkenyl group, an unsubstituted or substituted aryl group, an acyl group or --Y--SO.sub.3 M, Y represents an alkylene or alkenylene group, and M represents a cation; X.sub.1, X.sub.2 and X.sub.Type: GrantFiled: December 19, 1979Date of Patent: May 19, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiichi Adachi, Eiichi Kato, Nobuaki Inoue, Tetsurou Kojima
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Patent number: 4258119Abstract: In one embodiment, the present invention is concerned with novel xanthene compounds of the formula ##STR1## wherein X is ##STR2## wherein R' is alkyl, Y is an electron-withdrawing group and n is 0 or 1. In another embodiment, the present invention is concerned with photographic products and processes employing these xanthene compounds.Type: GrantFiled: December 26, 1979Date of Patent: March 24, 1981Assignee: Polaroid CorporationInventors: Richard L. Cournoyer, James W. Foley
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Patent number: 4258118Abstract: In one embodiment, the present invention is concerned with novel xanthene compounds of the formula ##STR1## wherein R' is alkyl; Y is an electron-withdrawing group and A is an anion. In another embodiment, the present invention is concerned with photographic products and processes employing these xanthene compounds.Type: GrantFiled: December 26, 1979Date of Patent: March 24, 1981Assignee: Polaroid CorporationInventors: James W. Foley, Louis Locatell, Jr., Charles M. Zepp
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Patent number: 4233399Abstract: Pyridone dyestuffs of the formula ##STR1## are provided wherein R.sub.1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group,R.sub.2, R.sub.3, R.sub.4 each independently represent hydrogen, halogen, alkoxy, or optionally substituted alkyl or cycloalkyl,R.sub.5 and R.sub.6 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or R.sub.5 and R.sub.6, R.sub.3 and R.sub.5 and R.sub.4 and R.sub.6 form heterocyclic rings,Y is hydrogen or hydroxy, --CN, --COOR.sub.7, --CONR.sub.7 R.sub.8 or --COR.sub.7 or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical, andZ represents --CN, --COOR.sub.9, --CONR.sub.9 R.sub.10, --SO.sub.3 H, --SO.sub.3 .crclbar. or --COR.sub.9, where R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical.Type: GrantFiled: May 8, 1979Date of Patent: November 11, 1980Assignee: Ciba-Geigy AktiengesellschaftInventors: Rainer Kitzing, John G. V. Scott, Terence C. Webb, Graham Evans
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Patent number: 4232116Abstract: Ultraviolet radiation sensitive photographic film material comprising a silver halide emulsion of at least 50 mole % silver chloride and a yellow filter dye over said silver halide emulsion layer.Type: GrantFiled: January 31, 1979Date of Patent: November 4, 1980Assignee: Minnesota Mining and Manufacturing CompanyInventor: Peter B. Jamieson
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Patent number: H1336Abstract: A silver halide photographic material comprising a support having provided thereon a silver halide emulsion layer, in which said silver halide emulsion layer contains at least one sensitizing dye selected from the group consisting of a compound represented by formula (I): ##STR1## and a compound represented by formula (II): ##STR2## and at least one of said silver halide emulsion layer and other hydrophilic colloidal layers contains a dye represented by formula (III): ##STR3## wherein the substituents of the formulas (I), (II) and (III) are as described in the specification. The photographic material exhibits excellent performance properties in terms of sensitivity to light emitted from an Hc-Ne laser or an LED, safety from safelight, and freedom from color remaining after processing.Type: GrantFiled: September 2, 1992Date of Patent: July 5, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Koichi Kuno, Tetsuo Yoshida, Masahiro Okada, Shigeru Ohno