And Solvent Or Emulsifier Or Coating Aid Patents (Class 430/546)
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Patent number: 6416941Abstract: A color photographic element comprises a support and at least one dye image forming layer unit comprising gelatin-peptized radiation-sensitive silver halide grains, a fragmentable electron donating compound; and an electron transfer agent releasing compound.Type: GrantFiled: December 20, 1999Date of Patent: July 9, 2002Assignee: Eastman Kodak CompanyInventors: Kenneth J. Reed, Annabel A. Muenter, Sharon R. Lunt, David T. Southby
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Patent number: 6413707Abstract: A photographic element is disclosed comprising a silver halide emulsion layer having associated therewith an acetanilide based yellow dye forming coupler and a compound of the following Formula I: wherein R1, R2 and R3 are each independently aromatic, cyclic, linear, or branched chained hydrocarbon groups. The invention provides photographic elements which exhibit exceptional yellow dye light stability, and which retain desirable properties derived from the use of acetanilide based yellow dye-forming couplers, particularly when used in combination with substituted phenolic and/or thiomorpholine dioxide stabilizers. In addition to stabilizing properties, compounds of Formula I have organic solvent properties, and accordingly may be advantageously used partly or totally in place of conventional high boiling permanent and/or auxiliary organic coupler solvents to disperse the acetanilide-based couplers.Type: GrantFiled: August 30, 2001Date of Patent: July 2, 2002Assignee: Eastman Kodak CompanyInventors: Kurt M. Schroeder, James S. Honan, Brian Thomas, Thomas A. Rosiek, Paul D. Yacobucci
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Patent number: 6413706Abstract: There is disclosed a method for producing an aqueous dispersion of a water-insoluble photographically useful compound, by mixing a composition containing at least one water-insoluble photographically useful organic compound with an aqueous medium, and finely dividing the mixture into particulates by a super-high-pressure homogenizer at 180 MPa (1800 bar) or higher. According to the method, the aqueous dispersion of the water-insoluble photographically useful compound can be produced without using a low-boiling solvent, with excellent energy efficiency and in a simple step. Further, there is also disclosed a silver halide photographic light-sensitive material utilizing the dispersion.Type: GrantFiled: May 11, 2000Date of Patent: July 2, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Masatoshi Nakanishi, Hirokazu Saito
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Patent number: 6410216Abstract: Method of forming a photographic color image which comprises imagewise exposing a photographic silver halide color material and processing it with an alkaline processing solution in the presence of a sulphonhydrazide color developing agent and a 3-pyridinol color coupler optionally containing in the 2-position a ballasting group of such size and configuration as to render the coupler non-diffusible in photographic materials thus forming a dye image by reaction of the oxidized color developing agent and the color coupler.Type: GrantFiled: July 14, 1994Date of Patent: June 25, 2002Assignee: Eastman Kodak CompanyInventors: David Clarke, Paul Louis Reginald Stanley
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Patent number: 6399289Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising, on a support, a unit blue-sensitive layer including at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, a unit green-sensitive layer including at least one green-sensitive silver halide emulsion layer containing a magenta coupler, and a unit red-sensitive layer including at least one red-sensitive silver halide emulsion layer containing a cyan coupler, at least one of the unit blue-, green-, and red-sensitive layers comprising not less than two color-sensitive layers differing in sensitivity, of which a highest-sensitivity layer being positioned farthest from the support, wherein the light-sensitive material has at least one layer containing a high-boiling organic solvent, at least 50% by weight of which is occupied by a high-boiling organic solvent having a viscosity of not less than 300 mPas at 25° C.Type: GrantFiled: September 28, 2000Date of Patent: June 4, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Junichiro Hosokawa, Hisashi Mikoshiba, Yasuhiro Kato
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Publication number: 20020061480Abstract: The invention provides a photographic element comprising at least one light-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, UV absorber andType: ApplicationFiled: August 21, 2001Publication date: May 23, 2002Applicant: Eastman Kodak CompanyInventor: Danuta Gibson
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Publication number: 20020058213Abstract: A silver halide photosensitive material in which a noncoloring compound is used as a high-boiling-point organic solvent for dissolving components of the silver halide photosensitive material that have low solubility in water. Preferably, the silver halide photosensitive material has a hydrophilic colloid layer containing a hydrophilic polymer and the noncoloring compound is contained in the hydrophilic colloid layer. The silver halide photosensitive material produces durable colored images, reduces the formation of stains, improves storability, alleviates fogging and soft-toning of emulsion during storage, inhibits migration of a dispersion medium, is inexpensive, and is produced from materials that cause little damage to the environment.Type: ApplicationFiled: March 22, 2001Publication date: May 16, 2002Inventors: Hisashi Mikoshiba, Hiroyuki Yoneyama, Naoto Matsuda
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Publication number: 20020055067Abstract: The present application relates to a photothermographic material comprising, on a side of a support, (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a phenol derivative having the specific structure as reducing compound, (d) a binder, (e) a coupler compound, and (f) a compound represented by Q1-NHNH-V6 wherein Q1 is a 5- to 7-membered unsaturated ring and V6 is a carbamoyl group, etc.Type: ApplicationFiled: August 3, 2001Publication date: May 9, 2002Inventors: Toyohisa Oya, Kazunobu Katoh
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Publication number: 20020042033Abstract: Disclosed is a color photographic element comprising at least one of (1) a light sensitive silver halide emulsion layer and (2) a non-silver containing light insensitive layer, said at least one layer containing a compound with a minimum of three heteroatoms that does not react with oxidized developer and that has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound. The invention provides improved light sensitivity.Type: ApplicationFiled: September 18, 2001Publication date: April 11, 2002Inventors: Philip A. Allway, Bernard A. Clark, John D. Goddard, Louis E. Friedrich, James A. Friday, Stephen P. Singer, Marcello Vitale
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Publication number: 20020037484Abstract: A silver halide color photographic light-sensitive material having at least one blue-sensitive emulsion layer, at least one green-sensitive emulsion layer, and at least one red-sensitive emulsion layer on a transparent support, wherein the transparent support is a plastic support having two surfaces undercoated with an undercoat solution containing at least one compound selected from the group consisting of a water-miscible organic solvent except for alcohols, a substituted phenol having a molecular weight of 200 or less, and a substituted acetic acid in which at least one hydrogen atom on a methyl group of acetic acid is substituted with a halogen atom, and at least one photosensitive emulsion layer contains a specific coupler.Type: ApplicationFiled: June 5, 2001Publication date: March 28, 2002Inventors: Naoto Matsuda, Hisashi Mikoshiba
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Publication number: 20020031736Abstract: A pyrrolotriazole compound of the following formula (I), and a silver halide color photographic light-sensitive material containing the pyrrolotriazole compound as a cyan coupler: 1Type: ApplicationFiled: March 26, 2001Publication date: March 14, 2002Inventors: Takeshi Nakamine, Nobuo Seto, Hideaki Sato, Yasuaki Deguchi
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Publication number: 20020028413Abstract: A method for forming a dispersion of an oil-soluble photographically useful compound in water or a hydrophilic colloid composition is disclosed, comprising dispersing the compound in the presence of a water-soluble anionic group containing polymeric surfactant, wherein the polymeric surfactant comprises a copolymer obtained from the copolymerization of a maleic anhydride monomer and a copolymerizable ethylenically unsaturated hydrophobic monomer and the anionic groups of the polymeric surfactant comprise primarily carboxy groups obtained upon base hydrolysis of the anhydride groups of the copolymer. The use of hydrolyzed maleic anhydride derived copolymers in place of conventional small-molecule surfactants as a dispersing agent to stabilize photographically active water-insoluble dye couplers or other organic oil-soluble photographically useful compounds enables a dramatic reduction of crystallization of such organic molecules on long-term keeping.Type: ApplicationFiled: September 5, 2001Publication date: March 7, 2002Applicant: Eastman Kodak CompanyInventors: Julia S. Tan, Kurt M. Schroeder, Delaina A. Amos
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Publication number: 20020022202Abstract: A colour photographic material comprising a support, at least one light-sensitive silver halide emulsion layer and at least one colour coupler associated with said layer, characterised in that the material contains at least one compound of formulaType: ApplicationFiled: June 22, 2001Publication date: February 21, 2002Inventor: Gunther Helling
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Publication number: 20020018971Abstract: A colour photographic recording material having at least one spectrally sensitised silver halide emulsion layer, characterised in that said silver halide emulsion layer contains an oil former having a pKa value of less than 18 and a DIR coupler and the material contains at least one colour coupler, wherein the colour coupler and/or the DIR coupler have specific structures, is distinguished by an increased interimage effect in comparison with the prior art without sensitivity being reduced.Type: ApplicationFiled: February 26, 2001Publication date: February 14, 2002Inventors: Jorg Hagemann, Gunter Helling, Heinz Wiesen, Ralf Wirowski, Ralf Buscher
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Publication number: 20020018973Abstract: A coupler represented by the following formula (I), and a silver halide color photographic light-sensitive material containing the coupler: 1Type: ApplicationFiled: June 11, 2001Publication date: February 14, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Hideaki Satoh, Takeshi Nakamine, Nobuo Seto, Hiroyuki Yoneyama, Yasuhiro Shimada
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Patent number: 6309812Abstract: There is disclosed an emulsified dispersion of photographic hydrophobic compound fine grains (with a proviso of excluding silver halides), which comprises an added water-soluble monovalent- or polyvalent-metal salt. The emulsified dispersion whose particle size is small, is excellent in the stability of the particle size with the lapse of time. There is also disclosed a silver halide photographic light-sensitive material, which contains the emulsified dispersion.Type: GrantFiled: November 3, 1998Date of Patent: October 30, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Yukio Aogaki, Masahiro Fukuoka
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Publication number: 20010034385Abstract: A hydrophobically capped oligomeric acrylamide or pyrrolidone is employed as a dispersant for hydrophobic materials in an aqueous medium containing a hydrophilic colloid, e.g. gelatin. The hydrophobic materials include photographic addenda such as color couplers or solid particle dyes.Type: ApplicationFiled: January 26, 2001Publication date: October 25, 2001Applicant: Eastman Kodak CompanyInventors: Alan R. Pitt, Trevor J. Wear, Danuta Gibson, Ian M. Newington, Mary C. Brick, John W. Boettcher, Gary N. Barber
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Patent number: 6280918Abstract: A silver halide photographic lightsensitive material comprises at least one silver halide emulsion layer on a support and contains at least one noncolor-forming compound represented by the following general formula (1) wherein each of R1, R2 and R3 independently represents an alkyl group, an aryl group, a halogen atom, a heterocyclic group, a cyano group, a hydroxy group, a nitro group, a carboxyl group, a sulfo group, an amino group, an alkoxy group, an aryloxy group, an acylamino group, an alkylamino group, an anilino group, an ureido group, an alkylthio group, an arylthio group, an alkoxycarbonylamino group, a sulfonamido group, a carbamoyl group, a sulfamoyl group, a sulfonyl group, an alkoxycarbonyl group, a heterocyclic oxy group, an azo group, an acyloxy group, a carbamoyloxy group, a silyloxy group, an aryloxycarbonylamino group, an imido group, a sulfinyl group, an aryloxycarbonyl group or an acyl group, each of k and n independently represents an integer of 0 to 5, and m representsType: GrantFiled: September 15, 1999Date of Patent: August 28, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Hisashi Mikoshiba, Hidetoshi Kobayashi
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Patent number: 6261755Abstract: The invention provides a photographic element comprising at least one light-sensitive silver halide emulsion layer having associated therewith: (A) a phenolic cyan dye-forming narrow bandwidth “NB coupler”; (B) a phenolic cyan dye-forming coupler of formula (II): wherein: R3 is an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted; R4 is an unsubstituted or substituted alkyl group; R5 is hydrogen, halogen or an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted; and Z is a hydrogen atom or a group which can be split off by the reaction of the coupler with an oxidized color-developing agent; and (C) a stabilizer of formula (III) wherein: eacType: GrantFiled: February 28, 2000Date of Patent: July 17, 2001Assignee: Eastman Kodak CompanyInventors: Danuta Gibson, James S. Honan, Thomas A. Rosiek
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Patent number: 6258521Abstract: There is disclosed a silver halide color photographic light-sensitive material that is improved in such aspects as fastness of dye images, color reproduction, cyan stain, processing cyan color contamination, and the like, by the combination use of a phenidone compound having a specific structure as in the following general formula (VIII) and a pyrrolotriazole cyan coupler. The phenidone compound (VIII) can be produced industrially in low cost, by reacting an &agr;-alkyl or alkenyl acrylate with a compound represented by the following general formula (VII): wherein, R4, R5, R6, R7, R8, and R9, each represent a hydrogen atom, an alkyl group, or the like; R2a represents an alkyl group having 6 to 30 carbon atoms, or the like.Type: GrantFiled: September 24, 1998Date of Patent: July 10, 2001Assignee: Fuji Photo Film, Co., Ltd.Inventors: Hisashi Mikoshiba, Yasuhiro Yoshioka, Shin Soejima, Osamu Takahashi, Naoki Saito, Masakazu Morigaki
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Publication number: 20010004512Abstract: A silver halide color photographic light-sensitive material comprising a support having provided thereon: at least one yellow-color-forming light-sensitive silver halide emulsion layer; at least one magenta-color-forming light-sensitive silver halide emulsion layer; at least one cyan-color-forming light-sensitive silver halide emulsion layer; and at least one light-insensitive non-color-forming hydrophilic colloid layer, wherein at least one layer of said at least one cyan-color-forming light-sensitive silver halide emulsion layer contains at least one cyan-dye-forming coupler having a pKa of not more than 8.Type: ApplicationFiled: July 6, 1998Publication date: June 21, 2001Applicant: Yasuhiro YoshiokaInventors: YASUHIRO YOSHIOKA, SHIN SOEJIMA, OSAMU TAKAHASHI, NAOKI SAITO, HISASHI MIKOSHIBA, MASAKAZU MORIGAKI
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Patent number: 6242169Abstract: A color photographic material containing at least one silver halide emulsion layer sensitised for the red range of the spectrum, which material contains at least one compound of the formula (I) in which R11 and R12 mutually independently denote an electron-attracting group, X11 denotes H or a group seperable on reaction with the developer oxidation product, Y11 denotes a group to complete a nitrogenous heterocycle, providing that a group represented by R12 is attached to a carbon atom of the heterocycle, n denotes 1 or 2, and at least one compound of the formula (II) in which R21 denotes alkyl, alkenyl, aryl, alkoxy, aryloxy, alkylamino, arylamino, acyl, acylamino, acyloxy, hetaryl, halogen, nitro or cyano, R22 denotes OH or has the same meaning as R21, n,m mutually independently denote 0 or 1, o denotes 0, 1, 2, 3, 4 or 5, providing that the compound contains a total of at least 16 C atoms, is distinguished by improved light stability.Type: GrantFiled: September 10, 1999Date of Patent: June 5, 2001Assignee: Agfa-GevaertInventors: Jörg Hagemann, Günter Helling, Heinz Wiesen
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Patent number: 6221571Abstract: A silver halide light sensitive photographic element is disclosed comprising a support bearing at least one cyan image forming hydrophilic colloid layer comprising cyan image dye forming coupler of Formula I and benzoic acid ester or diester high boiling solvent of Formula II. wherein Ra is an alkyl group, Rb is a ballast group, and X is hydrogen or a coulping-off group. wherein: each m is independently 0, 1, 2 or 3; each R1 is an individually selected alkyl group with up to four carbon atoms; n is 1 to 7; each R2, R3, R4 and R5 may be the same or different and is individually selected from hydrogen or an alkyl group with up to four carbon atoms; p is 0 to 3; q is 1 to 7; r is 0 or 1; and the log P of the solvent is at least 4.0. The photographic elements of the invention provide high cyan coupler reactivity and form deep cyan dye hues upon photographic processing without degrading cyan dye dark stability.Type: GrantFiled: December 10, 1998Date of Patent: April 24, 2001Assignee: Eastman Kodak CompanyInventors: Paul L. Zengerle, Gary N. Barber
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Patent number: 6214529Abstract: This invention relates to a method of reducing fog in a silver halide emulsion comprising taking a high fogging emulsion which has been chemically sensitized and cooled, holding the high fogging emulsion in the form of a melt in preparation for coating on a support, and prior to or during said holding, contacting the emulsion with an isothiazolin-one compound represented by the following formula wherein R1 is a substituent; and Z contains the carbon atoms necessary to form a substituted or unsubstituted non-aromatic ring. It also relates to silver halide photographic elements containing such emulsions.Type: GrantFiled: October 12, 1999Date of Patent: April 10, 2001Assignee: Eastman Kodak CompanyInventors: Jon N. Eikenberry, Kenneth G. Harbison
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Patent number: 6200741Abstract: The present invention provides a photographic element comprising a support bearing a light-sensitive silver halide emulsion layer in association with an image dye-forming coupler and having associated therewith a compound of general formula wherein R1 is an unsubstituted or substituted alkyl group, aryl group or 5-10 membered heterocyclic ring group containing one or more heteroatoms selected from N, O and S; each R2 is independently selected from hydrogen, halogen, and substituted or unsubstituted alkyl, aryl, alkyl- or aryl-sulfamoyl, alkyl- or aryl-sulfonamido, alkyl- or aryl-carbamoyl, alkyl- or aryl-carbonamido, alkenyloxy or 5-10 membered heterocyclic ring group containing one or more heteroatoms selected from N, O and S; each Y is independently selected from the groups consisting of —NHSO2 and —SO2NH; wherein the hydrogen therein has a pKa value of less than 9; n is an integer from 1 to 20; x is an integer from 1 to 6 and wherein the compound is ballasted.Type: GrantFiled: November 19, 1999Date of Patent: March 13, 2001Assignee: Eastman Kodak CompanyInventors: Paul L. Stanley, John D. Goddard
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Patent number: 6190847Abstract: A color negative silver halide photographic element is disclosed that is capable of producing images that, when converted to electronic form and then converted to a viewable form, exhibit reduced granularity. The photographic elements contain blue, green and red recording layer units capable of forming spectrally differentiated dye images. The layer units are substantially free of masking coupler, each exhibit a dye image gamma of less than 1.5 and an exposure latitude of at least 2.7 log E. Greater than 50 mole percent of development inhibitor compound in at least one of the layer units exhibits a diffusion factor of less than 0.4.Type: GrantFiled: April 24, 1998Date of Patent: February 20, 2001Assignee: Eastman Kodak CompanyInventors: Allan F. Sowinski, Richard P. Szajewski, Frank R. Brockler, Edward J. Giorgianni, John D. Buhr, Lois A. Buitano, Maria J. Gonzalez
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Patent number: 6187526Abstract: The invention relates to the preparation of photographic dispersions. The method of the invention consists in preparing a fluid dispersion of an additive in a colloid, congealing the resulting dispersion, subdividing the resulting congealed dispersion into particles, washing the resulting particles, and adding to them a solution of biocide. A dispersion is thus obtained that is protected against the proliferation of micro-organisms during storage.Type: GrantFiled: November 18, 1999Date of Patent: February 13, 2001Assignee: Eastman Kodak CompanyInventors: Christian Paris, Laurent G. Fernandez-Puente
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Patent number: 6187525Abstract: A photographic recording element is disclosed containing in at least one dye image forming layer unit (a) a radiation-sensitive silver halide grains include tabular grains (1) having {111} major faces, (2) containing greater than 50 mole percent bromide, based on silver, and (3) accounting for greater than 50 percent total grain projected area, (b) a fragmentable electron donating sensitizer, (c) a water dispersible cationic starch peptizer, and (d) a one equivalent dye image providing coupler. Increased photographic speed is realized.Type: GrantFiled: December 17, 1998Date of Patent: February 13, 2001Assignee: Eastman Kodak CompanyInventors: Joe E. Maskasky, Kenneth J. Reed, Victor P. Scaccia, James A. Friday
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Patent number: 6174660Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least a light-sensitive silver halide emulsion layer containing a light-sensitive silver halide emulsion and at least a nonlight-sensitive layer, wherein said silver halide photographic light-sensitive material contains a compound represented by the following formula (1) and said silver halide photographic light-sensitive material further contains a vinylsulfone group containing hardener. HOCH2(CHOH)mCH2OH Formula (1) wherein m represents an integer of 0 to 6.Type: GrantFiled: July 16, 1999Date of Patent: January 16, 2001Assignee: Konica CorporationInventors: Takesi Nakamura, Katsumasa Yamazaki
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Patent number: 6171774Abstract: A silver halide photographic light sensitive material is disclosed.Type: GrantFiled: November 9, 1998Date of Patent: January 9, 2001Assignee: Konica CorporationInventors: Kunimasa Hiyama, Kazuhiro Murai
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Patent number: 6136519Abstract: There is disclosed a silver halide color photographic material and a method for forming a color photographic image by processing said color photographic material with a color developer substantially free from sulfite. Said color photographic material comprises the uppermost non-photosensitive colloid layer of photographic constitutional layers containing a dispersion obtained by emulsifying and dispersing a solution containing at least one ultraviolet-absorbing agent represented by the following formula (I) or (II) and at least one water-insoluble polymer compound, and a gelatin having an isoelectric point of 6.0 or over: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represent a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, or an acylamino group; R.sub.4 and R.sub.Type: GrantFiled: May 19, 1993Date of Patent: October 24, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazunori Hasebe
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Patent number: 6136520Abstract: A photographic element is disclosed. The element comprises fine composite particles composed of fine inorganic particles bonded with a high boiling point compound. An excellent photographic element which exhibits high sensitivity, minimum fog, improved pressure resistance, no roller marks, and sufficient layer strength, all under low-replenished processing, protecting environmental pollution is obtained.Type: GrantFiled: December 14, 1998Date of Patent: October 24, 2000Assignee: Konica CorporationInventor: Yasuhiko Takamuki
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Patent number: 6136522Abstract: A silver halide photographic element comprising a support bearing a light sensitive silver halide emulsion layer and a cyclic azole dye forming coupler associated with a stabilizer combination comprising i) a compound having the following Formula S: ##STR1## and, ii) a compound having the following Formula I: ##STR2## wherein: R.sub.3 represents an aryl group or a heterocyclic group;Z.sub.1 and Z.sub.2 each represent an alkylene group having 1 to 3 carbon atoms provided that the total number of carbon atoms in the ring is 3 to 6;n is an integer of 1 or 2;R.sub.4 and R.sub.5 each independently represents a hydrogen atom or an alkyl or aryl group;W represents an alkyl or aryl group.Type: GrantFiled: December 9, 1998Date of Patent: October 24, 2000Assignee: Eastman Kodak CompanyInventors: Philip T. Lau, Stanley W. Cowan
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Patent number: 6132946Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon one or more layers including at least one light-sensitive silver halide emulsion layer comprising at least one coupler which undergoes a coupling reaction with an oxidized product of an aromatic primary amine developer to form a dye, wherein at least one of the layer(s) on said support comprises at least one compound represented by the following formula (I): ##STR1## wherein R.sup.1 represents a linear or branched unsubstituted alkenyl group having 3-14 carbon atoms, R.sup.2 represents an alkyl group, a cycloalkyl group, a linear or branched unsubstituted alkenyl group having 3-14 carbon atoms, R.sup.3 represents a group capable of being substituted on the benzene ring, and m represents an integer from 1 to 4. This may be use as a light-sensitive material which can provide a stable color-image.Type: GrantFiled: February 6, 1998Date of Patent: October 17, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroo Takizawa, Yasuhiro Yoshioka, Masakazu Morigaki
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Patent number: 6132947Abstract: Disclosed is a photographic element comprising at least one light sensitive silver halide emulsion layer having associated therewith: (A) a phenolic cyan dye-forming "NB coupler";(B) a high boiling solvent having Formula (II):R.sup.3 OO--C--(--G--)--C--OO--R.sup.4 (II)wherein:R.sup.3 and R.sup.4 represent independently selected alkyl or aryl groups; andG represents an alkyl (including cycloalkyl and aralkyl) containing linking group; and(C) a stabilizer having Formula (III): ##STR1## wherein each Y is an independently selected substituent and m is 0 to 4; andeach T is an independently selected substituent and p is 0 to 4.Type: GrantFiled: March 10, 1999Date of Patent: October 17, 2000Assignee: Eastman Kodak CompanyInventors: James S. Honan, Rakesh Jain, John W. Harder, William J. Begley
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Patent number: 6132945Abstract: A silver halide color photographic material comprising a support having provided thereon at least one silver halide emulsion layer, wherein the silver halide color photographic material contains a coupler represented by formula (1) shown below and a non-color forming colorless carboxylic acid compound having a diffusion-resistant group or a salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 each represents an alkyl group or an aryl group; R.sup.3, and R.sup.4 and R.sup.5 each represents a hydrogen atom, an alkyl group or an aryl group; Z represents a non-metallic atomic group necessary to form a saturated ring; R.sup.6 represents a substituent; X represents a heterocyclic group, a substituted amino group or an aryl group and Y represents a hydrogen atom or a group capable of being released upon color development.The silver halide color photographic material has an excellent color forming property to provide a color image of high maximum color density and good color reproducibility.Type: GrantFiled: February 5, 1998Date of Patent: October 17, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Naoki Saito, Masakazu Morigaki, Yasuhiro Yoshioka, Shin Soejima, Osamu Takahashi, Hisashi Mikoshiba
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Patent number: 6127108Abstract: A silver halide color photographic material wherein a cyan dye image density reduction is prevented in time of bleach fixing processing or bleach fixing, and its processing method by incorporating an oil soluble organic basic compound in the silver halide color photographic material. The compound oil soluble organic basic compound is represented by Formulas (I) to (V) defined in the specification.Type: GrantFiled: July 24, 1997Date of Patent: October 3, 2000Assignee: Konica CorporationInventors: Hiroshi Kita, Kazuhiro Murai
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Patent number: 6120981Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a dye-foaming coupler compound and a sulfonamido compound (a) bearing on the sulfur atom of the sulfonamido group an alkyl group and (b) bearing on the nitrogen atom of the sulfonamido group both a hydrogen atom that exhibits a pKa value of less than 9 and a second substituent that is either (1) an aryl group containing one or more electron withdrawing substituents for which the sum of the Hammett's values (.SIGMA..sigma..sub.p) is greater than 0.5, or (2) a heteroaryl group.Type: GrantFiled: December 31, 1998Date of Patent: September 19, 2000Assignee: Eastman Kodak CompanyInventors: David Hoke, Jared B. Mooberry, Kathleen M. Yahn, Kevin P. Dockery, David T. Southby
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Patent number: 6114103Abstract: This invention relates to a photographic element comprising a support and at least two silver halide emulsion layers wherein at least one emulsion layer contains an electron transfer agent releasing compound represented by the formula:CAR--(L).sub.n --ETAwherein:CAR is a carrier moiety which is capable of releasing --(L)n--ETA on reaction with oxidized developing agent;L is a divalent linking group, n is 0, 1 or 2; andETA is a releasable 1-aryl-3-pyrazolidinone electron transfer agent having a calculated log partition coefficient (c log P) greater than or equal to 2.40 bonded to L or CAR through either the nitrogen atom in the 2-position or the oxygen attached to the 3-position of the pyrazolidinone ring; and at least one soluble mercaptan releasing compound.Type: GrantFiled: December 30, 1998Date of Patent: September 5, 2000Assignee: Eastman Kodak CompanyInventors: James A. Friday, Sharon R. Lunt, Scott C. Sutton
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Patent number: 6110658Abstract: Disclosed is a photographic element having a reduced rate of crystal formation comprising a silver halide emulsion layer having associated therewith:(a) a phenolic cyan dye-forming "NB coupler";(b) a first high boiling solvent having Formula (IV):G--C--OO--R.sup.1 (IV)wherein:R.sup.1 is an alkyl or aryl groups; andG is an alkyl (including cycloalkyl and aralkyl) containing linking group; and(c) one or more second high boiling solvents selected from phosphates, phosphonates, phosphine oxides, sulfoxides, and carbonamides, said second high boiling solvent being present in amounts (by weight) sufficient to reduce crystal formation in a dispersion of the coupler compared to a dispersion of the same coupler in a dispersion where the second solvent is replaced with a like amount of the first solvent.Type: GrantFiled: March 10, 1999Date of Patent: August 29, 2000Assignee: Eastman Kodak CompanyInventors: James S. Honan, Raymond P. Scaringe, Thomas A. Rosiek
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Patent number: 6110657Abstract: This invention relates to a photographic element comprising a support and at least two silver halide emulsion layers wherein at least one emulsion layer contains an electron transfer agent releasing compound represented by the formula:CAR--(L).sub.n --ETAwherein:CAR is a carrier moiety which is capable of releasing --(L)n--ETA on reaction with oxidized developing agent;L is a divalent linking group, n is 0, 1 or 2; andETA is a releasable 1-aryl-3-pyrazolidinone electron transfer agent having a calculated log partition coefficient (c log P) greater than or equal to 2.40 bonded to L or CAR through either the nitrogen atom in the 2-position or the oxygen attached to the 3-position of the pyrazolidinone ring.Type: GrantFiled: December 30, 1998Date of Patent: August 29, 2000Assignee: Eastman Kodak CompanyInventors: Sharon R. Lunt, Scott C. Sutton, Louis E. Friedrich, David T. Southby
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Patent number: 6107017Abstract: A photographic element comprises a support bearing at least one silver halide emulsion and at least one high-boiling solvent of structure I, below: ##STR1## wherein: each m is independently 0, 1 or 2;each R.sub.1 is independently methyl or ethyl;n is 2 to 7;each R.sub.2 and each R.sub.3 may be the same or different and is individually selected from hydrogen or an alkyl group with up to five carbon atoms; andthe sum of the number of carbon atoms in each R.sub.1 plus each R.sub.2 plus each R.sub.3 taken together is four to eight.Type: GrantFiled: June 24, 1998Date of Patent: August 22, 2000Assignee: Eastman Kodak CompanyInventors: Paul B. Merkel, Ronald E. Leone
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Patent number: 6103460Abstract: A sliver halide color photographic light-sensitive material comprising a support having provided thereon at least one silver halide emulsion layer containing at least one cyan dye forming coupler represented by the formula (1) shown below, at least one compound represented by the formula (A) shown below and at least one compound represented by the formula (D) shown below: ##STR1## wherein Z.sup.a and Z.sup.b each represents --C(R.sup.3).dbd. or --N=, provided that one of Z.sup.a and Z.sup.b is --N= and the other is --C(R.sup.3).dbd.; R.sup.1 and R.sup.2 each represents an electron attractive group having a Hammett's substituent constant .sigma..sub.p value of 0.20 or more and the sum of the .sigma..sub.p values of R.sup.1 and R.sup.2 is 0.65 or more; R.sup.3 represents a hydrogen atom or a substituent; X represents a hydrogen atom or a group capable of being released upon a coupling reaction with an oxidation product of an aromatic primary amine color developing agent; and group represented by R.sup.1, R.sup.Type: GrantFiled: July 7, 1998Date of Patent: August 15, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Osamu Takahashi, Yasuhiro Yoshioka, Shin Soejima, Yasuhiro Shimada, Masakazu Morigaki
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Patent number: 6096492Abstract: A colour photographic material which contains an OH-functional polylactone in at least one layer is distinguished by improved maximum densities.Type: GrantFiled: November 4, 1998Date of Patent: August 1, 2000Assignee: Agfa-Gevaert NVInventors: Beate Weber, Markus Geiger, Jorg Hagemann
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Patent number: 6087083Abstract: A colour photographic material in which a package of layers is provided which consists, in the stated sequence, of (a) a silver halide-free layer containing colour coupler, (b) a layer containing silver halide and (c) a silver halide-free layer containing colour coupler, wherein at least one of layers (a) and (c) consists to an extent of at least 20 vol. % of a synthetic polymer, is distinguished by an improved grain/sensitivity ratio.Type: GrantFiled: November 3, 1998Date of Patent: July 11, 2000Assignee: Asfa-Gevaert N.V.Inventors: Peter Bell, Ralf Buscher, Lothar Endres, Lothar Rosenhahn, Rainer Scheerer, Lydia Simon, Thomas Stetzer
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Patent number: 6074808Abstract: An emulsified dispersion comprising at least a photographically useful hydrophobic substance and at least a high boiling solvent, further said emulsified dispersion substantially not comprising an auxiliary organic solvent, wherein a solubility parameter of said photographically useful hydrophobic substance at a temperature of 25.degree. C., and a solubility parameter of said high boiling solvent at a temperature of 25.degree. C. satisfies the relationship represented by the following Formula (1), and said photographically useful hydrophobic substance is dissolved in said high boiling solvent, ##EQU1## AiSP: a solubility parameter of a photographically useful hydrophobic substance, Ai, at a temperature of 25.degree. C.HBSiSP: a solubility parameter of a high boiling solvent, HBSi, at a temperature of 25.degree. C..phi.Ai: a proportion based on the volume fraction of a photographically useful hydrophobic substance, Ai, in an oil phase at a temperature of 25.degree. C.Type: GrantFiled: September 7, 1999Date of Patent: June 13, 2000Assignee: Konica CorporationInventor: Kiyoshi Endo
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Patent number: 6054258Abstract: The invention disclosed is a photographic element comprising a support bearing at least one silver halide emulsion and at least one high-boiling solvent of structure I, below: ##STR1## wherein: m is 0, 1 or 2;each R.sub.1 is an individually selected alkyl group with up to four carbon atoms;n is 2 to 5;each R.sub.2 and R.sub.3 may be the same or different and is individually selected from hydrogen or an alkyl group with up to four carbon atoms;p is 0 to 3;each R.sub.4 is independently a methyl or ethyl group; andthe sum of the number of carbon atoms in each R.sub.1 plus each R.sub.2 plus each R.sub.3 plus each R.sub.4 taken together is three to seven.Type: GrantFiled: June 24, 1998Date of Patent: April 25, 2000Assignee: Eastman Kodak CompanyInventors: Paul B. Merkel, Ronald E. Leone
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Patent number: 6051359Abstract: The present invention provides a heat-developable light-sensitive material having a support and a light-sensitive layer provided on the support. The heat-developable light-sensitive material contains dyes which are decolorized through reaction with a decolorizing agent during a development process. The dyes are non-diffusible and at least a part of decolorized dyes resulting from the development process is non-diffusible. Also provided is an image forming method using the heat-developable light-sensitive material. The present method provides images having excellent sharpness within a short period of time.Type: GrantFiled: November 25, 1997Date of Patent: April 18, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Atsuhiro Ohkawa, Hiroo Takizawa, Shun-ichi Ishikawa, Takuya Yokokawa
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Patent number: 6045987Abstract: There is disclosed a silver halide color photographic light-sensitive material which comprises a compound of the formula (I) contained in at least one hydrophilic colloid layer on a support: ##STR1## wherein R.sup.1 and R.sup.2 each represent an aliphatic group, an aromatic group, or a heterocyclic group; R.sup.3 represents a substituent; m and n are each an integral number of 0 to 5, provided that m+n.ltoreq.5; and R.sup.1 and R.sup.2 may bond together to form a ring. The light-sensitive material is excellent in the solubility and dispersion stability of photographic reagents, good in color reproduction, and excellent in the fastness of dye images.Type: GrantFiled: March 27, 1997Date of Patent: April 4, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuhiro Shimada, Hiroyuki Yoneyama
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Patent number: RE37205Abstract: A silver halide color photographic material comprising a support having thereon a yellow color forming silver halide emulsion layer, a magenta color forming silver halide emulsion layer and a cyan color forming silver halide emulsion layer. The yellow color forming emulsion layer contains a silver halide emulsion having a silver chloride content of not less than 90 mol %, a yellow coupler and a bisphenol compound and optionally a difficultly water-soluble epoxy compound. One or more layers of the light-sensitive material may contain an ultraviolet light absorber.Type: GrantFiled: December 22, 1995Date of Patent: June 5, 2001Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroyuki Yoneyama