Using Web Or Gel Patents (Class 430/404)
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Patent number: 6074810Abstract: There is disclosed a silver halide color light-sensitive material, which comprises a coupler of the formula (1), (2), or (3) in at least one layer on a base: ##STR1## wherein R.sub.1 is a hydrogen atom, a halogen atom, or a substituent, R.sub.2 is a group of formula (4), R.sub.3 and R.sub.4 each are a hydrogen atom, a halogen atom, or a substituent, with the proviso that at least one of R.sub.3 and R.sub.4 is a group of the formula (4), R.sub.5 and R.sub.6 each are an alkyl group, an amino group, a carbonamido group, an alkoxycarbonylamino group, a sulfonamido group, and the like, R.sub.7 represents a group capable of substitution on a benzene ring; n is an integer of 0 to 3. This light-sensitive material can give a magenta image excellent in discrimination, and it is excellent in preservability before and after processing.Type: GrantFiled: October 8, 1998Date of Patent: June 13, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshio Kawagishi, Hideaki Naruse
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Patent number: 6022673Abstract: An image formation method in which a photosensitive element is exposed in image-wise fashion, then, a first treating element comprising a treating layer comprising a base and/or base precursor is prepared, this first treating element is laminated on the photosensitive element so that the treating layer of the first treating element faces the photosensitive layer of the photosensitive element and the resultant laminate is heated for 5 to 60 seconds at a temperature of 60 to 100.degree. C. in the presence of water in an amount of 1 cc/m.sup.2 to 50 cc/m.sup.2 between the photosensitive layer of the photosensitive element and the treating layer of the first treating element. Then the photosensitive element is separated from the first treating member. Then a second treating element comprising a support carrying thereon a treating layer comprising at least an acidic polymer is prepared.Type: GrantFiled: June 18, 1998Date of Patent: February 8, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Shun-ichi Ishikawa
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Patent number: 5998109Abstract: A method for developing a silver halide photographic light-sensitive material, wherein a silver halide photographic light-sensitive material containing at least three mosaic-like or stripe-like filter layers having different spectral transmission characteristics and at least one silver halide emulsion layer is exposed, thereafter said silver halide photographic light-sensitive material is processed by coating a processing solution or spraying a processing solution which consists of a developer containing at least one developing agent.Type: GrantFiled: December 21, 1998Date of Patent: December 7, 1999Assignee: Konica CorporationInventor: Shigeto Hirabayashi
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Patent number: 5976773Abstract: The invention relates to a silver halide photographic process carried out using a developing agent incorporated in particles. The developing agent is present in the particles along with a phospholipid-type surfactant. These particles are placed, upon development, in contact with the exposed silver halide photographic material, in the presence of an alkaline activator.Type: GrantFiled: December 22, 1998Date of Patent: November 2, 1999Assignee: Eastman Kodak CompanyInventor: Laurent G. Fernandez-Puente
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Patent number: 5928845Abstract: The present invention concerns a novel method of processing a photographic product that comprises a step of fixing by surface application of a fixing solution. This processing method affords efficacious fixing with a reduced quantity of fixing solution.Type: GrantFiled: June 25, 1998Date of Patent: July 27, 1999Assignee: Eastman Kodak CompanyInventor: Christiane B. Feumi-Jantou
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Patent number: 5869217Abstract: A silver halide photographic material which has a layer containing a swellable inorganic stratifying compound.Type: GrantFiled: July 24, 1997Date of Patent: February 9, 1999Assignee: Fuji Photo Film Co., Ltd.Inventor: Toshiaki Aono
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Patent number: 5856063Abstract: An image forming method comprising the steps of: (i) imagewise exposing a silver halide light-sensitive material comprising a support having thereon at least a light-sensitive silver halide emulsion, a hydrophilic binder and a slightly water-soluble basic metal compound; (ii) laminating the silver halide material with a processing sheet comprising a compound which forms a complex with a metal ion constituting the basic metal compound, a physical development nucleus, a solvent for a silver halide and a matting agent, after or concurrently with the imagewise exposure; and (iii) conducting heat development in the presence of a reducing agent and water to form a silver image on at least one of the light-sensitive material and the processing sheet, wherein the processing sheet comprises an uppermost layer containing the physical development nucleus; the product of the weight ratio in the uppermost layer of the amount of the physical development nucleus to that of the binder and the reciprocal of the mean size (.Type: GrantFiled: June 19, 1997Date of Patent: January 5, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Hirai, Takashi Nakamura, Kiyoteru Miyake
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Patent number: 5843617Abstract: An imaging method is provided that includes a tetraarylpolymethine dye, and bleaching this dye by bringing the dye into contact with a 4-alkyl or 4-unsubstituted 1,4-dihydropyridine derivative.Type: GrantFiled: April 22, 1997Date of Patent: December 1, 1998Assignee: Minnesota Mining & Manufacturing CompanyInventors: Ranjan C. Patel, Mark R. I. Chambers, Dian E. Stevenson, Robert J. D. Nairne, Gregory L. Zwaldo
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Patent number: 5837437Abstract: An aqueous developable chromogenic photographic element coated on a single dimensionally stable support wherein said element comprises in reactive association (1) an aqueous diffusible photographically useful organic compound or precursor to an aqueous diffusible photographically useful organic compound, (2) radiation sensitive silver halide, (3) a compound that forms or releases a dye, (4) hydrophilic binder, and (5) one or more contiguous overcoat layers devoid of silver halide wherein said one or more overcoat layers comprise hydrophilic binder at a level of at least 3 g/m.sup.2 is disclosed.Type: GrantFiled: March 12, 1996Date of Patent: November 17, 1998Assignee: Eastman Kodak CompanyInventors: Ravi Sharma, John Texter
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Patent number: 5834156Abstract: A method for processing a photosensitive material characterized in that an exposed photosensitive material is subjected to dip coating with a processing solution, according to which there are no problems encountered in plate making by the conventional dip developing method and coating developing method, rapid processing can be attained, maintenance is easy, less waste processing solution is produced, and lithographic printing plates on which uniform print images can be formed from the top end portion thereof by silver complex diffusion transfer process, and an apparatus used for the processing.Type: GrantFiled: June 13, 1997Date of Patent: November 10, 1998Assignee: Mitsubishi Papers Mills LimitedInventors: Jun Urasaki, Toshiyuki Morito, Masahiko Saikawa, Yoshikazu Takano, Eiji Kanada
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Patent number: 5789144Abstract: The present invention concerns a method for developing a photographic product containing incorporated developers, and a layer of a novel activator. This method consists of applying to an exposed photographic product a thin layer of an aqueous homogeneous development activator solution which comprises (a) an alkanolamine in an amount higher or equal to 0.6 mol/l, (b) at least one stable wetting agent that is stable at a high pH and is miscible in the activator solution, and (c) a quaternary ammonium salt.Type: GrantFiled: April 18, 1997Date of Patent: August 4, 1998Assignee: Eastman Kodak CompanyInventor: Francoise Marie Thomas
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Patent number: 5773560Abstract: The present invention discloses a silver halide color photographic light-sensitive material which comprises a first support having thereon at least one photographic light-sensitive layer comprising a light-sensitive silver halide emulsion, a developing agent, a compound capable of forming a dye upon coupling reaction with an oxidation product of the developing agent, a binder, and a mercaptoazole compound, and a color image forming method comprising imagewise exposing the above-described silver halide color photographic light-sensitive material, supplying water to the light-sensitive material or a processing material comprising a second support having thereon a base or a base precursor, in an amount ranging from 1/10 to the equivalent of an amount which is required for the maximum swelling of the all coated layers of these materials, placing the light-sensitive material and the processing material face to face, and heating the materials at a temperature of 60.degree. to 100.degree. C.Type: GrantFiled: July 25, 1997Date of Patent: June 30, 1998Assignee: Fuji Photo Film Co., Ltd.Inventor: Masahiro Asami
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Patent number: 5756269Abstract: Methods of forming color images having excellent graininess and sharpness by simple heat development processing are disclosed.Type: GrantFiled: August 21, 1996Date of Patent: May 26, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Shun-ichi Ishikawa, Kazuhiko Matsumoto, Toshiki Taguchi
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Patent number: 5747226Abstract: Provided are a processing material used for forming images on a heat-developable photosensitive material by heating the processing material and the photosensitive material in a condition that they are brought into face-to-face contact, with the processing material comprising a long web support, preferably having a thickness of from 4 to 40 .mu.m, provided thereon a processing layer, preferably comprising a base or a precursor of bases; and a method of forming images on a heat-developable photosensitive material, which comprises a step of supplying a fountain water to the photosensitive material, a step of bringing the dampened photosensitive material into face-to-face contact with the aforesaid processing material and a step of applying heat thereto.Type: GrantFiled: August 27, 1996Date of Patent: May 5, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshisada Nakamura, Shun-ichi Ishikawa, Kazuhiko Matsumoto
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Patent number: 5736293Abstract: An image forming method comprising the steps of:(a) superposing a heat development photosensitive material on a sheet after or simultaneously with imagewise exposing the heat development photosensitive material, wherein the photosensitive material comprises a support having thereon at least a photosensitive silver halide, a hydrophilic binder and a slightly water-soluble basic metal compound, and the sheet comprises a support having thereon at least a compound which forms a complex with the metal ion constituting the basic metal compound, a solvent for a silver halide and a physical development nucleus; and(b) heat developing the laminate in the presence of a reducing agent and water to form an image on either or both of the photosensitive material and the sheet,wherein the reducing agent comprises a 1-phenyl-3-pyrazolidone compound and a dihydroxybenzene compound having an inorganic value of not less than 215 and an organic value of from 120 to 400.Type: GrantFiled: October 25, 1996Date of Patent: April 7, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Hirai, Michio Ono, Takashi Nakamura
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Patent number: 5725990Abstract: An image formation method comprising imagewise exposing a silver halide light-sensitive material comprising a support having thereon a light-sensitive silver halide, a binder, a slightly water soluble basic metal compound, and a dye composition which is decolorized or discolored on heat development; contacting the surface of the light-sensitive material with a sheet coated with a binder and a compound which forms a complex with a metal ion constituting the basic metal compound and heating them in the presence of a reducing agent and water after or during the imagewise exposing; and peeling off the sheet to obtain an image on at least the light-sensitive material and the sheet, wherein the dye composition comprises an oil-soluble dye formed by a leuco dye and a color developer.Type: GrantFiled: July 18, 1996Date of Patent: March 10, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroyuki Hirai, Yoshiharu Yabuki
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Patent number: 5695916Abstract: A thickened processing solution containing inert particles can be used in lamination processing to insure even processing.Type: GrantFiled: August 8, 1996Date of Patent: December 9, 1997Assignee: Eastman Kodak CompanyInventor: John Richard Fyson
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Patent number: 5478703Abstract: A method of fixing a developed photographic silver halide material comprising at least 2 silver halide layers sensitized to different regions of the spectrum, comprising placing the material in face-to-face contact with a fixer sheet in the presence of a processing solution and a silver halide solvent which forms a solubilized silver halide species from the undeveloped areas of the material, wherein the fixer sheet contains reducing means capable of forming metallic silver therein from the solubilized silver halide.Type: GrantFiled: October 27, 1994Date of Patent: December 26, 1995Assignee: Eastman Kodak CompanyInventor: Michael J. Simons
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Patent number: 5422233Abstract: Photographic processing compositions comprising an aqueous alkaline medium and a hydrophobically modified thickening agent are disclosed. The subject thickening agent increases the viscosity of the processing composition while maintaining a relatively uniform homogenous mixture of the constituents thereof. The subject processing compositions are useful in photographic diffusion transfer film units and processes.Type: GrantFiled: May 17, 1994Date of Patent: June 6, 1995Assignee: Polaroid CorporationInventors: Robert D. Eckert, Daniel D. Huang, Francis M. Pierce
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Patent number: 5262271Abstract: According to the present invention a method for producing a negative image is provided, comprising the following steps:image-wise exposing an imaging element comprising on a support, a light-sensitive silver halide emulsion layer comprising silver halide grains having an average volume of not more than 0.02 .mu.m.sup.3 and a layer containing non-light-sensitive water insoluble silver salt, to produce a latent image in said layer of light-sensitive silver halidedeveloping said latent image to produce physical development nuclei of silverdissolving the non-light-sensitive silver salts using a silver salt complexing agent andallowing the thus formed silver salt complexes to diffuse to the layer containing said image-wise formed physical development nuclei of silver to image-wise deposit and develop said silver salt complexes on said image-wise formed physical development nuclei of silver in the presence of (a) developing agent(s).Type: GrantFiled: October 10, 1991Date of Patent: November 16, 1993Assignee: AGFA-Gevaert, N.V.Inventors: Jean-Pierre D. Tahon, Wilhelmus Janssens
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Patent number: 5200295Abstract: A method for the production of a silver image by the silver complex diffusion transfer reversal process, said method comprising the following steps:(I) image-wise photo-exposing a silver halide emulsion layer of a photographic silver halide emulsion having in waterpermeable relationship with the silver halide at least one developing agent,(II) wetting with a practically neutral aqueous liquid the said photo-exposed silver halide emulsion layer and/or wetting with said liquid a development nuclei containing layer of an image-receiving material as defined hereinafter and contacting said materials thereby bringing said layers into waterpermeable relationship with each other, and(III) separating the contacted materials after formation in the image-receiving material of a silver image,wherein said image-receiving material contains in co-operable relationship: (i) physical development nuclei, (ii) a silver halide solvent being a silver complexing agent or precursor thereof, (iii) a watersoluble sulfite or sulfite pType: GrantFiled: December 10, 1991Date of Patent: April 6, 1993Assignee: AGFA-Gevaert N.V.Inventors: Leon L. Vermeulen, Robert S. Pauwels, Jean-Marie O. Dewanckele
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Patent number: 5164280Abstract: The invention is generally accomplished by a method wherein a dry photographic image is formed in an imaging-forming donor layer. The formed image is allowed to diffuse to a receiver layer. A dry acceptor layer is brought into contact with the image-forming layer and then separated such that the image-forming layer is adhered to the acceptor layer. It is preferred that the contact of the acceptor layer and the image-forming layer is under heat and pressure and the preferred material for both layers is dry gelatin.Type: GrantFiled: December 6, 1991Date of Patent: November 17, 1992Assignee: Eastman Kodak CompanyInventors: John Texter, William B. Travis, Roland G. Willis
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Patent number: 5066563Abstract: A photographic element is disclosed comprising a support having provided thereon a highly water-absorbing high molecular weight compound having degree of swelling of 5 or more.Type: GrantFiled: July 23, 1990Date of Patent: November 19, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiaki Aono, Koichi Nakamura, Takeshi Shibata
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Patent number: 5009984Abstract: A method for processing an imagewise exposed photographic silver halide emulsion material using a receptor element for complexed silver halide which element contains a stabilizing agent corresponding to one of the following general formulae (I) or (II), tautomeric structures or a precursor form thereof: ##STR1## wherein: X represents hydrogen, alkali metal, ammonium or organic amine,Z represents the non-metallic atoms necessary to form a 5- or 6-membered heterocyclic nucleus, andeach of R.sup.1 and R.sup.2 (same or different) represents hydrogen, amino, alkyl, alkenyl, cycloalkyl, aryl, alkoxy, alkylthio, alkylsulfonyl, sulfamoyl, acyl, --SH or a heterocyclic group.Type: GrantFiled: June 29, 1989Date of Patent: April 23, 1991Assignee: Agfa-Gevaert, N.V.Inventors: Gino L. De Rycke, Antonius A. Rutges, Jozef P. De Prijcker
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Patent number: 5004676Abstract: A new process for maintaining the properties of the developer in the preparation of colored images by development of exposed silver halide-containing material at an alkaline pH in a developer bath containing p-phenylenediamine derivative and at least 40 mol-% of the silver halide consisting of silver chloride and replenishing the color developer in the bath in such a limited quantity that no overflow occurs but it is sufficient to make up for the loss of bath constituents.This process preserves the sensitive results from development during use of the developer bath.Type: GrantFiled: February 14, 1990Date of Patent: April 2, 1991Assignee: Agfa-Gevaert AktiengesellschaftInventors: Heinz Meckl, Sieghart Klotzer, Erich Wolff, Helmut Haseler
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Patent number: 4925767Abstract: Process for controlling the visual appearance of an image present on a permanent support in the form of a hydrophilic colloid layer, layer system or relief pattern by the transfer of a continuous non-photosensitive layer from a temporary support onto said permanent support either before or after said image is formed thereon, which comprise by pre-wetting the permanent support either image-free or with said image already thereon, containing the pre-wetted support with said continuous layer carried on the temporary support, and stripping off the temporary support to leave the continuous layer adhering on the permanent support, said continuous layer being non-photosensitive and contains hardened gelatin, the gelatin being applied at a coverage of at most 20 g/m2 and having a degree of hardening corresponding with that achieved by the addition of at least 0.001 g of formaldehyde per gram of gelatin.Type: GrantFiled: December 14, 1988Date of Patent: May 15, 1990Assignee: AGFA-Gevaert, N.V.Inventors: Eddie R. Daems, Luc H. Leenders
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Patent number: 4925780Abstract: A direct positive silver halide light-sensitive color photographic material comprising, on a support, (1) at least three light-sensitive silver halide emulsion layers containing internal latent image-type light-sensitive silver halide grains, (2) specific sensitizing dyes having formulas [I], [II] and [III], respectively defined in the specification, and (3) at least one anti-irradiation compound selected from the group consisting of those compounds having formulas [IV], [V] and [VI], respectively defined in the specification, is disclosed.Type: GrantFiled: August 18, 1988Date of Patent: May 15, 1990Assignee: Konica CorporationInventors: Tomimi Yoshizawa, Keiji Ogi, Atushi Kamitakahara
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Patent number: 4888267Abstract: An ecologically clean method for processing an imagewise exposed photographic material having a silver halide emulsion layer which method comprises the steps of:(A) developing the image-wise exposed photographic material by means of at least one diffusible developing agent in the absence of such an amount of silver halide solvent that would reduce the coverage of developed silver metal (Ag/m2) by more than 20% using an aqueous alkaline liquid.Type: GrantFiled: April 29, 1988Date of Patent: December 19, 1989Assignee: AGFA-Gevaert N.V.Inventor: Gino L. De Rycke
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Patent number: 4830949Abstract: An ecologically advantageous method for processing an exposed photographic silver halide emulsion layer-bearing material involves the steps of:(A) developing in an aqueous alkaline liquid an image-wise exposed silver halide emulsion layer of said material by means of at least one diffusible developing agent in the absence of such an amount of silver halide solvent that would reduce the coverage of developed silver metal (Ag/m2) by more than 20%,(B) bringing the emulsion layer side of said developed photographic material while still wet by the liquid from step (A) into contact with a water-absorbing processing layer of a receptor element that contains in an organic hydrophilic colloid binder a silver halide reducing agent and silver halide complexing agent and in waterpermeable relationship therewith physical development nuclei,(C) maintaining said photographic material and receptor compound into said receptor element until removal of undeveloped silver halide from the exposed silver halide emulsion layer is sType: GrantFiled: April 29, 1988Date of Patent: May 16, 1989Assignee: AGFA-Gevaert N.V.Inventor: Gino L. De Rycke
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Patent number: 4775614Abstract: An ecologically advantageous method for fixing a developed photographic silver halide emulsion layer material which involves the steps of:(A) developing an image-wise exposed silver halide emulsion layer with a developing agent in the presence of an aqueous alkaline liquid,(B) bringing the developed photographic material while still wet with the liquid of step (A) with its silver halide emulsion layer side in intimate contact with a water-absorbing layer of a receptor element, which layer comprises an organic hydrophilic colloid binder, a silver halide complexing agent, and in dispersed form a metal sulphide as silver ion scavenging agent,(C) maintaining said photographic material and receptor element in contact to allow the transfer of dissolved complexed silver compound into said receptor element, and(D) separating the photographic material from the receptor element, andwherein said water-absorbing layer contains said metal sulphide in colloidal form with an average grain size below 0.1 .mu.Type: GrantFiled: October 20, 1986Date of Patent: October 4, 1988Assignee: Agfa-Gevaert N.V.Inventor: Gino L. De Rycke
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Patent number: 4770972Abstract: The present invention provides an imaging process wherein the pressure application developer means is not contaminated during pressure development. The process involves an imaging web including a support having a layer on the surface thereof of photosensitive microcapsules including an internal phase of a photohardenable photosensitive composition and a color former. The imaging web is image-wise exposed to a first source of actinic radiation to form an image area; this exposure defines a border area in the web comprising the areas of the imaging web surrounding the image area. The image area of the imaging web is contacted with an opaque receiver sheet. The border area is then uniformly exposed to a second source of actinic radiation to harden the microcapsules in the border area.Type: GrantFiled: May 19, 1987Date of Patent: September 13, 1988Assignee: The Mead CorporationInventors: Erik K. Nelson, Michael E. Demarchi, David A. Boyer
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Patent number: 4756996Abstract: A photographic processing composition which comprises an aqueous alkaline solution, a silver halide developing agent and a substantially water-insoluble, cationic polyoxyethylene amine containing 2 or 3 mols of ethylene oxide.Type: GrantFiled: November 3, 1986Date of Patent: July 12, 1988Assignee: Polaroid CorporationInventor: Frank E. Debruyn, Jr.
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Patent number: 4714334Abstract: A method is provided for producing a photographic image in color of a continuous tone, e.g., black and white object, such as a black and white photograph or an X-ray. Instant color film of the type having emulsions developed in timed sequence after exposure to a developer, and a separable sheet carrying the developer is used. The object is exposed onto the film, the developer is activated, and the developer sheet is separated, perferably prior to development of all of the emulsions. The resulting color photographic image may be reproduced.Type: GrantFiled: November 25, 1986Date of Patent: December 22, 1987Inventor: Clarence C. Edwards
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Patent number: 4690884Abstract: A scavenger-spreader element adapted for use with a photosensitive element to form a negative image is disclosed as well as methods for processing said photosensitive element to produce the negative image. The scavenger-spreader element comprises a support carrying a hydrophilic layer, a cross-linking agent for the polymeric thickener of the photographic processing composition, a barrier layer to control diffusion of said cross-linking agent and a layer adapted to possess substantial adhesion for the cross-linked polymeric thickening agent.Type: GrantFiled: February 11, 1986Date of Patent: September 1, 1987Assignee: Polaroid CorporationInventors: Frank E. DeBruyn, Jr., Lucretia J. Weed
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Patent number: 4605608Abstract: An image-receiving element for use in a diffusion transfer process comprising a transparent support carrying an image-receiving layer and a hydrogel comprising a hydrophilic polymer layer cross-linked by ionizing radiation, said polymer layer containing aqueous alkaline photographic processing composition.Type: GrantFiled: September 23, 1985Date of Patent: August 12, 1986Assignee: Polaroid CorporationInventor: Julian G. Bullitt
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Patent number: 4480025Abstract: A bleach-fix sheet for use in color photographic processes comprises a support having thereon a bleach-fix layer and a water reservoir layer comprising a water-supplying polymer. In a preferred embodiment, the bleach-fix sheet is useful to bleach and fix a retained image in a color image diffusion transfer process.Type: GrantFiled: January 13, 1983Date of Patent: October 30, 1984Assignee: Eastman Kodak CompanyInventors: Hao J. Chang, Gerhard Popp, Patrick H. Saturno
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Patent number: 4420552Abstract: A method for producing printed images includes the steps of exposing a printing device to radiation, developing a photosensitive ink that is contained in the printing device, and transferring the ink to a substrate. The printing device comprises a printing element and the photosensitive ink. The printing element comprises pores having openings at a printing surface of the element, and the ink is disposed within the pores and is restricted from lateral movement within the element.Type: GrantFiled: January 25, 1983Date of Patent: December 13, 1983Assignee: Richard M. PeckInventors: Richard M. Peck, Robert B. Reif, Loren R. Albrechtson
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Patent number: 4399212Abstract: The present invention relates to a method and to a processing band for processing a sheet or strip of photographic material (1) which has been image exposed and is brought into surface contact, in the presence of water, with a carrier (2) which is impregnated with the required processing chemicals. The photographic material (1) which has been image exposed is repeatedly moved along a closed path and brought into surface contact with the processing band (2) along a specified portion of said path in the presence of water, the processing band (2) having at least wo sections with different processing functions (A, B, C . . . ) arranged one behind the other, with which every portion of the photographic material (1) comes successively into contact.Type: GrantFiled: March 1, 1982Date of Patent: August 16, 1983Assignee: AGFA-Gevaert AktiengesellschaftInventors: Immo Boie, Hermann Luhrig, Guido Kovacic, Karlheinz Keller
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Patent number: 4310620Abstract: A photographic material is processed with a processing liquid by establishing a surface contact between the uppermost layer of the material and a flat porous spreading element impregnated with a low viscosity processing liquid. The impregnation is brought about by providing during or prior to processing for a contact between the spreading element in at least parts thereof with the liquid content of a container for the processing liquid. The spreading element may be flexible or rigid and may consist of woven or knitted fabrics, non-woven webs of endless filaments or staple fibres, non-woven webs of paper fibres, porous plastic foils or porous metal layers.Type: GrantFiled: March 7, 1979Date of Patent: January 12, 1982Assignee: AGFA-Gevaert AktiengesellschaftInventor: Rudolf Meyer
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Patent number: 4296198Abstract: For the production of positive photographic prints a composite material in strip form is used as an intermediary to form the print images and is then adhered in a continuous procedure to a main support strip such as paper. The resultant strip is then cut to separate the individual prints. The composite material has a transparent film of biaxially-oriented plastics film not more than 50.mu. thick and water-resistant and to which photosensitive emulsions are applied, and a further layer overlying the emulsions to protect them, the further layer being adhered to the main support. This layer is reflective, as by incorporation of a white pigment, so that the image is seen through the transparent film against the background of this layer rather than the main support. The reflective layer may contain other chemicals relevant to processing.Type: GrantFiled: July 2, 1979Date of Patent: October 20, 1981Assignee: Ciba-Geigy AGInventor: Franz Trautweiler
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Patent number: 4268604Abstract: In a photographic element for the color diffusion transfer process including a neutralizing system for reducing the pH of an aqueous alkaline developing solution which comprises a neutralizing layer and a timing layer wherein the timing layer is positioned on or under the neutralizing layer in direct or indirect contact therewith such that the aqueous alkaline developing solution reaches the neutralizing layer through the timing layer, the improvement which comprises said timing layer comprising a mixture of at least one polymer latex the minimum film forming temperature of which is 35.degree. C. or less (Group I) and at least one polymer latex the minimum film forming temperature of which is more than 35.degree. C.Type: GrantFiled: April 19, 1979Date of Patent: May 19, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Takashi Yoshida, Shinji Sakaguchi