Heterocyclic Coupler Patents (Class 430/558)
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Patent number: 5468600Abstract: A silver halide color photographic material is described, comprising a support having provided thereon at least one light-sensitive silver halide emulsion layer(s), wherein at least one of said silver halide emulsion layer(s) comprises a high boiling organic solvent represented by the following formula (SO): ##STR1## wherein Y represents a substituent group represented by the following formula (A) or (B): ##STR2## wherein R.sub.21 in the formula (A) represents an aliphatic or aryl group containing 9 to 40 carbon atoms, and R.sub.22 and R.sub.23 in the formula (B) each represents an aliphatic or aryl group containing 6 to 40 carbon atoms.Type: GrantFiled: July 15, 1994Date of Patent: November 21, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiyuki Watanabe, Hiroo Takizawa
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Patent number: 5466568Abstract: A photographic element and imaging process used therewith provides reduced fogging where the element comprises a light sensitive silver halide layer containing (1) an azopyrazolone masking coupler and (2) a ballasted aromatic nitro compound having a reduction peak potential which is more positive than -1.3 V vs. the Standard Calomel Electrode.Type: GrantFiled: September 30, 1993Date of Patent: November 14, 1995Assignee: Eastman Kodak CompanyInventors: Daniel L. Kapp, Robert J. Ross, Janet N. Younathan, Stephen P. Singer
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Patent number: 5466566Abstract: A silver halide color photographic material comprises at least one red-sensitive layer, at least one green-sensitive layer and at least one blue-sensitive layer on a support, in which (1) the blue-sensitive layer contains a magenta colored or cyan colored yellow coupler and contains an emulsion of tabular grains having a mean aspect ratio of 3.0 or more, (2) the green-sensitive layer contains a cyan colored magenta coupler and contains an emulsion of tabular grains having a mean aspect ratio of 3.0 or more, or (3) the blue-sensitive layer and/or the green-sensitive layer contain(s) a magenta colored or cyan colored colorless coupler and contain(s) an emulsion of tabular grains having a mean aspect ratio of 3.0 or more. The material has excellent color reproducibility and gives a color image having good sharpness and storage stability.Type: GrantFiled: July 23, 1993Date of Patent: November 14, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Mamoru Tashiro, Seiji Ichijima
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Patent number: 5464731Abstract: A silver halide color photographic material comprising a support provided thereon at least one light sensitive silver halide emulsion layer and at least one light insensitive layer, wherein the light insensitive layer contains at least one of the compounds represented by Formula (I) and at least one of the compounds represented by Formula (II); and the amount of the compounds represented by Formula (II) in the above light insensitive layer is 15 to 100 mole % of the amount of the compounds represented by Formula (I) in the same light insensitive layer: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represent an alkyl group, provided that a total of carbon numbers of R.sub.1 and R.sub.2 and a total of carbon numbers of R.sub.3 and R.sub.4 each are 16 or more and 60 or less and that a hydroquinone structure is not involved in R.sub.1, R.sub.2, R.sub.3, and R.sub.4.Type: GrantFiled: March 1, 1994Date of Patent: November 7, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobutaka Ohki, Naoki Asanuma, Osamu Takahashi
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Patent number: 5462844Abstract: A light-sensitive silver halide color photographic material suited for preparing a color proofing image is provided, comprising a support and provided thereon a yellow image forming silver halide emulsion layer, a magenta image forming silver halide emulsion layer and a cyan image forming silver halide emulsion layer, wherein a silver halide emulsion with a spectral sensitivity having a part common to the respective spectral sensitivity regions pertaining to said yellow, magenta and cyan image forming silver halide emulsion layers is contained in at least one of the image forming silver halide emulsion layers; and the magenta image forming silver halide emulsion layer contains a compound represented by the following formula and a yellow dye forming coupler.Type: GrantFiled: March 29, 1995Date of Patent: October 31, 1995Assignee: Konica CorporationInventor: Yasuo Tosaka
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Patent number: 5462842Abstract: The invention provides a photographic element and process of forming an image where the element is a multicolor photographic element comprising at least one light sensitive photographic silver halide emulsion layer sensitive to blue light and containing a yellow image dye-forming coupler, at least one light sensitive photographic silver halide emulsion layer sensitive to green light: and containing a magenta image dye-forming coupler, and at least one light sensitive photographic silver halide emulsion layer sensitive to red light and containing a cyan dye-forming coupler,wherein the yellow image dye-forming coupler has the formula I: ##STR1## wherein t-Bu is a tertiary butyl group, Ph is an unsubstituted phenyl ring or one containing up to 5 substituents, and Y is a heterocyclic ring, substituted or non, which is capable of leaving upon reaction if the coupler with oxidized developer; andwherein said at least one light sensitive photographic silver halide emulsion layer sensitive to blue light and containingType: GrantFiled: January 12, 1994Date of Patent: October 31, 1995Assignee: Eastman Kodak CompanyInventors: Charles E. Romano, Jr., Larry D. Edwards, Richard E. Hibbs
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Patent number: 5462847Abstract: A silver halide color photographic material is provided comprising at least one yellow-developable silver halide emulsion layer, at least one magenta-developable silver halide emulsion layer and at least one cyan-developable silver halide emulsion layer on a support, characterized in that said at least one cyan-developable silver halide emulsion layer comprises at least one cyan dye-forming coupler represented by the following general formula (Ia) and silver bromochloride or silver chloride emulsion grains substantially free of silver iodide having a silver chloride content of 95 mol % or more spectrally sensitized with at least one sensitizing dye having a reduction potential of -1.27 V (vs. SCE) or lower: ##STR1## wherein Za represents --NH-- or --CH(R.sub.3)--; Zb and Zc each represents --C(R.sub.4).dbd. or --N.dbd.; R.sub.1, R.sub.2 and R.sub.3 each represents an electron withdrawing group having a Hammett's substituent constant .sigma..sub.p value of 0.20 or more, with the proviso that the sum of .sigma.Type: GrantFiled: June 2, 1993Date of Patent: October 31, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Shigeaki Otani
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Patent number: 5460929Abstract: There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (Ia) and (a) a sensitizing dye containing a sulfonamide group, (b) negative-type internal latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (c) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, (d) a monodisperse silver halide emulsion, (e) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (f) a colloidal silver, or (g) a DIR-hydroquinone: ##STR1## wherein Za represents --NH-- or --CH(R.sub.3)--, Zb and Zc each represent --C(R.sub.4).dbd. or --N.dbd., R.sub.1, R.sub.2, and R.sub.3 each represent an electron-attracting group wherein the Hammett substituent constant .sigma..sub.p value is 0.Type: GrantFiled: April 14, 1993Date of Patent: October 24, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Satoshi Nagaoka, Kazuyoshi Yamakawa, Mitsuru Yamamoto, Makoto Suzuki, Yasuhiro Shimada, Katsuro Nagaoka, Hideo Ikeda, Takefumi Hara, Sadanobu Shuto
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Patent number: 5460925Abstract: A photographic element comprises a support, at least one photosensitive silver halide layer and in or adjacent said silver halide layer a color coupler of one of the general formulas: ##STR1## wherein R.sup.1 is a group substantially without any electron-withdrawing capability,R.sup.2 is a substituent not incompatible with the function of the compound,R.sup.3 is an alkyl, aryl or heterocyclic group any of which may be substituted,provided that R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3 may together form a cyclic group containing at least one heteroatom, andX is a coupling-off group.The invention also provides a coupler composition, a dye composition, and a method of forming an image in the element of the invention.Type: GrantFiled: May 4, 1994Date of Patent: October 24, 1995Assignee: Eastman Kodak CompanyInventor: Philip A. Allway
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Patent number: 5459020Abstract: Silver halide color photographic materials are described in which anti-fading agents and anti-staining agents are included in silver halide emulsion layers which contain pyrazoloazole-based couplers which have been established by coating on a reflective supports, the base material of which is covered with a composition in which a white pigment has been admixed with, and dispersed in, a resin of which polyester forms the principal component.Type: GrantFiled: December 9, 1993Date of Patent: October 17, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Takehiko Sato
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Patent number: 5457020Abstract: Novel bicyclic pyrazolo couplers containing a ballast group of formula (I): ##STR1## are useful in photographic materials and processes. The couplers exhibit increased coupling activity, and provide formation of dyes having improved maximum magenta image dye density, hue, and dye light stability when employed in color photographic materials and processes.Type: GrantFiled: December 18, 1992Date of Patent: October 10, 1995Assignee: Eastman Kodak CompanyInventors: Philip T. S. Lau, Ping W. Tang, Stanley W. Cowan
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Patent number: 5455149Abstract: Yellow azomethine dyes of particularly elevated stability are obtained from yellow couplers of the formula I by chromogenic development ##STR1## In formula I Q means a residue to complete a 4-pyrimidone ring;X means a residue which is eliminable on chromogenic development;R.sup.1 means alkyl with 1 to 6 C atoms;R.sup.2 means halogen, --CF.sub.3, alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, acylamino, sulphonamido, sulphuramido, carbamoyl, alkoxycarbonyl, sulphonyl, sulphamoyl or a heterocyclic residue, wherein two adjacent residues R.sup.2 may complete a ring;n means an integer from 1 to 4.Type: GrantFiled: August 19, 1994Date of Patent: October 3, 1995Assignee: Agfa-Gevaert, AGInventor: Peter Bergthaller
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Patent number: 5451501Abstract: A 1H-pyrazolo[1,5-b][1,2,4]triazole magenta coupler having a t-alkyl group at the position-6 and an amido group-substituted phenyl group at the position-2 is disclosed. There is also disclosed a silver halide color photographic material containing the same.Type: GrantFiled: May 26, 1993Date of Patent: September 19, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yuki Mizukawa, Masuji Motoki, Tadahisa Sato, Osamu Takahashi
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Patent number: 5449592Abstract: A silver halide color photographic light-sensitive material for making a color proof and a method for making the color proof using the light-sensitive material. Halftone color proofs having a similar color tone of small dots and large dots can be obtained by the light-sensitive material and the method using it. The silver halide color photographic light-sensitive material comprises a yellow image forming light-sensitive layers, a magenta image foming light-sensitive layer and a cyan image forming light-sensitive layer which are different from each other in spectral sensitivity, and the magenta image forming layer contains a magenta coupler and an yellow coupler.Type: GrantFiled: July 14, 1994Date of Patent: September 12, 1995Assignee: Konica CorporationInventors: Tomomi Yoshizawa, Keiji Ogi, Nariko Kimura, Shigeto Hirabayashi
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Patent number: 5447831Abstract: The invention provides a silver halide color negative photographic element comprising a red sensitive silver halide emulsion layer containing a coupler which reacts with oxidized color developer to form a cyan dye, a blue sensitive silver halide emulsion layer containing a coupler which reacts with oxidized color developer to form a yellow dye, and a green sensitive silver halide emulsion layer containing a coupler which upon reaction with oxidized color developer forms a magenta image dye, the element additionally comprising a hue correction coupler associated with a green sensitive layer which coupler reacts with oxidized developer to form a magenta dye having a peak absorption between 565-600 nm so that the element has a D580/D550 ratio which is greater than that exhibited by the element absent the hue correction coupler. The invention also provides a process for forming an image in the element described.Type: GrantFiled: October 19, 1993Date of Patent: September 5, 1995Assignee: Eastman Kodak CompanyInventors: Stephen P. Singer, Jared B. Mooberry
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Patent number: 5445924Abstract: There is disclosed a method for forming a color image using a silver halide color photographic material having three silver halide photosensitive layers on a support, comprising, in a cyan color-forming coupler-containing photosensitive layer, a cyan dye-forming coupler represented by formula (I) or (II), wherein said photographic material is exposed by a scanning exposure system and then is subjected to color development processing: ##STR1## wherein Za and Zb each represent --C(R.sub.3).dbd. or --N.dbd., provided that one of Za and Zb represents --N.dbd. and the other represents --C(R.sub.3).dbd.; R.sub.1 and R.sub.2 each represent an electron-attracting group; R.sub.3 represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a coupling-off group, provided that R.sub.1, R.sub.2, R.sub.3, or X may be a divalent group, to form a dimer or higher polymer, or to bond to a polymer chain to form a homopolymer or copolymer.Type: GrantFiled: February 19, 1993Date of Patent: August 29, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Kiyoshi Kawai
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Patent number: 5445926Abstract: Disclosed is a method for processing color photographic materials having a layer structure in which a cyan color-forming layer is disposed on the upper side of a pyrazoloazole type magenta coupler-containing magenta color-forming layer. A layer which does not contain any hydroquinones but contains a ultraviolet absorbent is provided above the cyan coupler-containing silver halide emulsion layer having a high chloride content, while below the cyan coupler-containing emulsion layer is provided another layer containing hydroquinones but not containing any ultraviolet absorbent. These materials are processed rapidly with a color developer under a reduced replenishment condition, wherein the amount of a color developer replenished is controlled to below 120 ml/m.sup.2, to provide color images fast to light and free from bluish unevenness in the edge part thereof.Type: GrantFiled: October 23, 1992Date of Patent: August 29, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazunori Hasebe
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Patent number: 5441863Abstract: Novel imidazo[3,2-a]imidazole cyan dye-forming couplers and photographic elements containing them are described. The couplers are represented by the following structure: ##STR1## wherein: EWG.sub.1 and EWG.sub.2 each independently represent an electron withdrawing group;X is hydrogen or a coupling-off group; andR.sup.1 is hydrogen or a substituent group.Type: GrantFiled: July 28, 1994Date of Patent: August 15, 1995Assignee: Eastman Kodak CompanyInventors: Ping W. Tang, Thomas H. Jozefiak, David J. Decker
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Patent number: 5437967Abstract: A silver halide color photographic light-sensitive material capable of providing a dye image having excellent color reproducibility, less fading of cyan, magenta and yellow colors and a dye image fastness with a good balance of the three colors, comprise a support and provided thereon a silver halide light-sensitive layer containing a cyan coupler, a silver halide light-sensitive layer containing a magenta coupler, and a silver halide light-sensitive layer containing a yellow coupler, wherein the silver halide light-sensitive layer containing the cyan coupler contains at least one pyrrolotriazole cyan couplers represented by the following Formula (I) or (II) as a cyan coupler and the silver halide light-sensitive layer containing the magenta coupler contains a pyrazoloazole magenta coupler represented by the following Formula (M) as a magenta coupler: ##STR1## wherein the substituents are defined herein the specification.Type: GrantFiled: April 18, 1994Date of Patent: August 1, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideaki Naruse, Makoto Suzuki
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Patent number: 5437962Abstract: A photographic element having at least one photosensitive silver halide layer and associated therewith both a particular type of color coupler and a particular type of stabilizer. The color coupler is of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group,X is H or a group which splits off on coupling with oxidized color developer,R is an alkyl, cycloalkyl, aryl or heterocyclic which may be substituted, --COR.sup.1, --CSR.sup.1, SOR.sup.1, SO.sub.2 R.sup.1, --NHCOR.sup.1, --CONHR.sup.1, --COOR.sup.1, --COSR.sup.1, --NHSO.sub.2 R.sup.1 wherein R.sup.1 is an alkyl, cycloalkyl, or aryl group any of which are optionally substituted, and wherein two or more of A, B, R, and X optionally form part of a ring,Link is a linking group andn is 0, 1 or 2.The stabilizer is of the general formula (II), (III) or (IV): ##STR2## wherein the substituents of (II), (III) and (IV) are as defined in the specification.Type: GrantFiled: April 2, 1993Date of Patent: August 1, 1995Assignee: Eastman Kodak CompanyInventors: Rakesh Jain, Thomas H. Jozefiak, Hugh M. Williamson
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Patent number: 5436116Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising a support having thereon a mainly yellow image forming layer, a mainly magenta image forming layer and a mainly cyan image forming layer; wherein, when an exposure is conducted within 1/10 to 10 times of an exposure amount giving minimum density of +0.2 on the first layer selected from said three layers after developing in the main spectra sensitivity region of the first layer, the second layer selected from said three layers is given lower density with said 1/10 to 10 times of exposure than a density without said 1/10 to 10 times of exposure; and reflection densities in 450 nm, 550 nm and 700 nm is not less than 0.8 respectively, before the developing.The silver halide color photographic light sensitive material is capable of providing a color proof improved in the approximation degrees of an image quality to a printed printer.Type: GrantFiled: September 7, 1993Date of Patent: July 25, 1995Assignee: Konica CorporationInventors: Keiichi Hoshino, Susumu Ohkawachi, Yasuo Tosaka, Yoshiyuki Nonaka
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Patent number: 5436117Abstract: Disclosed is a positive type silver halide color photographic light-sensitive material comprising a support having thereon a mainly yellow image forming layer, a mainly magenta image forming layer and a mainly cyan image forming layer; wherein, when an exposure is conducted with 1/10 to 10 times an exposure amount giving minimum density of +0.2 on a first layer selected from said three layer after developing in the main spectra sensitivity region of the first layer, a second layer selected from said three layers is given lower density with said exposure than a density without said exposure; and after a photographic process comprising a color developing step, the mainly yellow, mainly magenta and mainly cyan image forming layers have the monochromatic yellow, magenta and cyan tones in toe portions thereof each of not less than 1.7. The silver halide color photographic light sensitive material is capable of providing a color proof improved in the approximation degrees of an image quality to a printed matter.Type: GrantFiled: November 14, 1994Date of Patent: July 25, 1995Assignee: Konica CorporationInventors: Keiichi Hoshino, Susumu Ohkawauchi, Yasuo Tosaka, Yoshiyuki Nonaka
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Photographic elements containing particular color couplers in combination with polymeric stabilizers
Patent number: 5436124Abstract: A photographic element comprising a support, at least one photosensitive silver halide layer and associated therewith a color coupler and a stabilizer therefor which stabilizer is an acrylate or acrylamide homopolymer or copolymer of low water solubility, the color coupler being of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group,X is H or a group which splits off on coupling with oxidised color developer,R is an alkyl, cycloalkyl, aryl or heterocyclic which may be substituted, --COR.sup.1, --CSR.sup.1, SOR.sup.1, SO.sub.2 R.sup.1, --NHCOR.sup.1, --CONHR.sup.1, --COOR.sup.1, --COSR.sup.1, --NHSO.sub.2 R.sup.1 wherein R.sup.1 is an alkyl, cycloalkyl, or aryl group any of which are optionally substituted, and wherein two or more of A, B, R, and X optionally form part of a ring,Link is a linking group andn is 0, 1 or 2.Type: GrantFiled: April 2, 1993Date of Patent: July 25, 1995Assignee: Eastman Kodak CompanyInventors: Rakesh Jain, Thomas H. Jozefiak, Hugh M. Williamson -
Patent number: 5436125Abstract: In a color photographic recording material, the light stability of a dye image produced from a magenta coupler and stabilized with a compound of the formula I may be further improved by additionally using a compound of one of the formulae II and III. ##STR1## In the formulae I, II and III, R.sup.1, R.sup.21, R.sup.25, R.sup.31, R.sup.34 mean H, alkyl, aryl, acyl;R.sup.2, R.sup.22, R.sup.32 mean --OR.sup.1 alkyl, aryl, dialkylamino, acylamino, sulphonamido, acyl, sulphonyl;R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.23, R.sup.24, R.sup.33 mean H, halogen or a residue as R.sup.2 ;m, n, q mean 0, 1, 2 or 3;o means 0, 1 or 2;p means a positive integer;A means alkylene, --O--, --S--, --NR.sup.25 --, --SO.sub.2 ;B means alkylene, --O--, --S--, --NR.sup.34 --, --SO.sub.2 --;wherein two adjacent residues --OR.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 may together complete a 5- to 8-membered ring, two adjacent residues --OR.sup.21, R.sup.23, R.sup.22 or --OR.sup.21, R.sup.24, R.sup.22, or --OR.sup.31, R.sup.Type: GrantFiled: July 28, 1994Date of Patent: July 25, 1995Assignee: Agfa-Gevaert AGInventors: Jorg Hagemann, Beate Weber
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Patent number: 5434041Abstract: A photographic element having at least one photosensitive silver halide layer and associated therewith both a particular type of color coupler and a particular type of stabilizer. The color coupler is of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group,X is H or a group which splits off on coupling with oxidized color developer,R is an alkyl, cycloalkyl, aryl or heterocyclic which may be substituted, --COR.sup.1, --CSR.sup.1, SOR.sup.1, SO.sub.2 R.sup.1, --NHCOR.sup.1, --CONHR.sup.1, --COOR.sup.1, --COSR.sup.1, --NHSO.sub.2 R.sup.1 wherein R.sup.1 is an alkyl, cycloalkyl, or aryl group any of which are optionally substituted, and wherein two or more of A, B, R, and X optionally form part of a ring,Link is a linking group andn is 0, 1 or 2.The stabilizer is of the general formula: ##STR2## wherein: E.sup.1, E.sup.2, W.sup.2 and W.sup.Type: GrantFiled: April 2, 1993Date of Patent: July 18, 1995Assignee: Eastman Kodak CompanyInventors: Rakesh Jain, Thomas H. Jozefiak, Hugh M. Williamson
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Patent number: 5434034Abstract: There is disclosed a silver halide color photographic material and a method for forming a color image using said color photographic material. The silver halide color photographic material comprises silver halide emulsion grains comprising silver chlorobromide having a high silver chloride content and being substantially free from silver iodide, and a cyan dye-forming coupler represented by formula (I) or (II), and said silver halide emulsion grains being formed by adding a water-soluble bromide at the grain formation step, and/or during the period from the completion of the formation of the grains to the coating of the cyan dye-forming layer onto the support: ##STR1## wherein Za and Zb each represent --N.dbd. or --C(R.sub.3).dbd., with one of Za and Zb being --N.dbd. and the other being --C(R.sub.3).dbd.; R.sub.1 and R.sub.2 each represent an electron-attracting group, whose Hammett substituent constant .sigma..sub.p value is 0.20 or more, with the sum of the .sigma..sub.p values of R.sub.1 and R.sub.Type: GrantFiled: April 15, 1993Date of Patent: July 18, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Masahiro Asami
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Patent number: 5434040Abstract: A photographic element having at least one photosensitive silver halide layer and associated therewith both a particular type of color coupler and a particular type of stabilizer. The color coupler is of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group,X is H or a group which splits off on coupling with oxidized color developer,R is an alkyl, cycloalkyl, aryl or heterocyclic which may be substituted, --COR.sup.1, --CSR.sup.1, SOR.sup.1, SO.sub.2 R.sup.1, --NHCOR.sup.1, --CONHR.sup.1, --COOR.sup.1, --COSR.sup.1, --NHSO.sub.2 R.sup.1 wherein R.sup.1 is an alkyl, cycloalkyl, or aryl group any of which are optionally substituted, and wherein two or more of A, B, R, and X optionally form part of a ring,Link is a linking group andn is 0, 1 or 2.The stabilizer is of the general formula (I) below: ##STR2## wherein: M is Cu, Co, Ni, Pd or Pt;W.sup.2, W.sup.3, W.sup.4 and W.sup.5 are defined in the specification.Type: GrantFiled: April 2, 1993Date of Patent: July 18, 1995Assignee: Eastman Kodak CompanyInventors: Rakesh Jain, Thomas H. Jozefiak, Sundaram Krishnamurthy, John L. Pawlak, Hugh M. Williamson
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Patent number: 5429915Abstract: A silver halide color photographic light-sensitive material has red-, green-, and blue-sensitive silver halide emulsion layers, and the red-sensitive emulsion layer contains a cyan coupler and a yellow coupler with a relative coupling rate of 0.7 to 3.0 with respect to the cyan coupler. In addition, at least one layer may contain a specific DIR compound, the average silver iodide content of a silver halide emulsion contained in the red-sensitive silver halide emulsion may be higher than that of a silver halide emulsion contained in the green-sensitive silver halide emulsion layer, or at least one layer may contain a monodisperse silver halide grain emulsion with a grain diameter/grain thickness ratio of 2 to 8.Type: GrantFiled: October 13, 1993Date of Patent: July 4, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshihiko Shibahara, Kei Sakanoue
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Patent number: 5429913Abstract: Photographic coupler compositions comprise a magenta dye-forming coupler and an alcohol in an amount sufficient to increase the activity of the dye-forming coupler. The alcohol is of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of (a) unsubstituted alkyl and alkenyl groups, (b) alkyl groups containing one or more substitutents selected from the group consisting of aryl groups, alkenyl groups, halogen atoms, alkoxy groups, alkoxy carbonyl groups and acyloxy groups, (c) unsubstituted aryl groups and (d) aryl groups containing one or more substituents selected from the group consisting of alkyl groups, alkoxy groups, alkoxy carbonyl groups and acyloxy groups; and R.sub.2 and R.sub.3 are individually selected from hydrogen and the group of moieties from which R is selected, provided that the total number of carbon atoms contained in R.sub.1, R.sub.2 and R.sub.3 is at least 10.Type: GrantFiled: August 30, 1993Date of Patent: July 4, 1995Assignee: Eastman Kodak CompanyInventors: Paul B. Merkel, Edward Schofield
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Patent number: 5427897Abstract: A method for processing an imagewise exposed silver halide color photographic material comprising a support having thereon at least a silver halide emulsion layer containing a cyan dye-forming coupler, a silver halide emulsion layer containing a magenta dye-forming coupler, and a silver halide emulsion layer containing a yellow dye-forming coupler: wherein the silver halide color photographic material contains at least one cyan dye-forming coupler represented by the following general formula (I) or (II) in the silver halide emulsion layer containing the cyan dye-forming coupler: and wherein the processing comprises color developing the imagewise exposed silver halide color photographic material with a color developer containing a p-phenylenediamine derivative represented by the following general formula (III): ##STR1## wherein the substituents are defined herein the specification.Type: GrantFiled: February 12, 1993Date of Patent: June 27, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Koichi Nakamura, Masato Taniguchi
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Patent number: 5427896Abstract: A method for processing a color photographic material comprising a support having on at least one surface thereof at least one layer containing a light-sensitive silver halide emulsion and a non-diffusing oil-soluble coupler capable of forming a dye by coupling with the oxidation product of an aromatic primary amine developing agent, wherein the oil-soluble dye is a pyrrolotriazole cyan coupler and the color photographic material is processed after color development with a bath containing, as a fixing agent, at least one of nitrogen-containing heterocyclic compounds having a sulfide group, meso-ionic compounds and thioether compounds.Type: GrantFiled: February 12, 1993Date of Patent: June 27, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroshi Hayashi
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Patent number: 5426022Abstract: Compounds of Formula I are suitable as light stabilizers for the image dyes produced during chromogenic development from magenta couplers or yellow couplers ##STR1## In Formula I: R.sup.1, R.sup.2, R.sup.3 signify alkyl, aryl;R.sup.4, R.sup.5, R.sup.6 signify H, alkyl, alkoxy, aryloxy, acyloxy, ##STR2## alkoxycarbonyl, carbamoyl; R.sup.7 signifies H, alkyl, aryl;R.sup.8 signifies alkyl, aryl, acyl;X signifies a single bond, --O--, --NH--.Type: GrantFiled: July 5, 1994Date of Patent: June 20, 1995Assignee: Agfa-Gevaert AGInventor: Jorg Hagemann
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Patent number: 5424179Abstract: Novel cyclic azole couplers and photographic elements containing them are described. The couplers are represented by the following structure: ##STR1## wherein: COUP is a cyclic azole coupler moiety;R.sub.1, R.sub.2 and R.sub.3 independently represent hydrogen or a substituent;L is a linking group joining the azole ring and the aryleneoxy group;G is a bi-valent linking group; andm is an integer of 0 to 2.Type: GrantFiled: August 11, 1994Date of Patent: June 13, 1995Assignee: Eastman Kodak CompanyInventors: Ping W. Tang, Terrence C. Mungal
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Patent number: 5418123Abstract: (Magenta) colour images with improved stability to light may be obtained with a colour photographic recording material containing compounds of formula I as magenta couplers. The magenta couplers of formula I are particularly suitable for use in recording materials of positive colour images on light reflecting or transparent supports.Type: GrantFiled: November 12, 1993Date of Patent: May 23, 1995Assignee: Bayer AktiengesellschaftInventor: Erich Wolff
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Patent number: 5418118Abstract: The invention provides a cyan color producing silver halide emulsion layer or a magenta color producing silver halide emulsion layer wherein said at least one layer has an exposure range of at least 0.6 log E from the point where the instantaneous contrast is 1.0 and wherein the instantaneous contrast of said layer increases as a function of increasing exposure over at least 70 percent of said exposure range.Type: GrantFiled: February 18, 1994Date of Patent: May 23, 1995Assignee: Eastman Kodak CompanyInventors: James L. Edwards, Eric L. Bell, Benjamin T. Chen, Richard L. Parton
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Patent number: 5415988Abstract: A silver halide color photographic light-sensitive material having a support which has thereon at least one light-sensitive silver halide emulsion layer and at least one light-nonsensitive layer, whereinthe light-nonsensitive layer comprises a layer which contains a compound represented by formula (I) and a compound represented by formula (II),the light-sensitive silver halide emulsion layer comprises at least one coupler represented by formula (III), anda total amount of a compound represented by formula (II) is 2 to 20 mol % of a total amount of a compound represented by formula (I).Type: GrantFiled: November 22, 1993Date of Patent: May 16, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobutaka Ohki, Osamu Takahashi
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Patent number: 5415981Abstract: A method of forming a photographic colour image which comprises imagewise exposing a photographic silver halide colour material and processing it with an alkaline developer solution in the presence of a sulphonhydrazide developer and a heteroarylacetonitrile colour coupler thus forming a dye image by reaction of oxidised colour developing agent and the colour coupler. A colour photographic material is also provided having at least two colour-forming units sensitive to different regions of the spectrum, each having a silver halide emulsion layer, characterised in that the material contains in or adjacent said layer, a ballasted photographic colour coupler and a ballasted sulphonhydrazide colour developing agent incorporated therein in droplets of a high boiling solvent and in which the colour coupler is a heteroarylacetonitrile.Type: GrantFiled: March 4, 1993Date of Patent: May 16, 1995Assignee: Eastman Kodak CompanyInventors: David Clarke, Paul L. Stanley
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Patent number: 5415990Abstract: A novel cyan coupler for photographic dye, a process of forming a dye using the coupler and a photographic material containing the cyan coupler are disclosed. The coupler is represented by formula ##STR1## R, R.sub.1, X, m and n are defined in the specification.Type: GrantFiled: April 7, 1994Date of Patent: May 16, 1995Assignee: Konica CorporationInventors: Yutaka Kaneko, Rudchenko F. Vladimir, Satoru Ikesu
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Patent number: 5415985Abstract: Disclosed is a silver halide color photographic material which contains at least one pyrroloazole compound as cyan coupler and has a layer structure in which a cyan coupler-containing silver halide emulsion layer is disposed in the position nearer to a support than at least either a magenta coupler-containing silver halide emulsion layer or a yellow coupler-containing silver halide emulsion layer, whereby ensuring excellent color reproducibility and high fastness in color images.Type: GrantFiled: April 27, 1993Date of Patent: May 16, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Hidekazu Sakai, Yasuhiro Shimada
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Patent number: 5415989Abstract: Magenta dye images with excellent stability to light are obtained with a color photographic recording material which contains, associated with a light-sensitive silver halide emulsion layer, at least one magenta coupler corresponding to formula I and at least one compound corresponding to formula II.Type: GrantFiled: February 22, 1994Date of Patent: May 16, 1995Assignee: Agfa-Givaert AGInventors: Erich Wolff, Dieter Lowski
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Patent number: 5411847Abstract: A color-photographic recording material is described which contains a magenta coupler and, as stabilizer, at least one compound of the formula ##STR1## where the radicals are as defined in claim 1.Type: GrantFiled: August 30, 1993Date of Patent: May 2, 1995Assignee: Ciba-Geigy CorporationInventors: David G. Leppard, Hugh S. Laver
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Patent number: 5409808Abstract: Disclosed is a silver halide color photographic material having at least one light-sensitive silver halide emulsion layer on a support and containing at least one coupler of formula (I): ##STR1## where R.sub.1 represents an alkyl group; R.sub.2 and R.sub.3 each represent a hydrogen atom, an alkyl group or an aryl group, provided that both R.sub.2 and R.sub.3 are not hydrogen atoms at the same time; R.sub.4 and R.sub.5 each represent an alkyl group; X represents a hydrogen atom or a substituent capable of splitting off by coupling with an oxidation product of a developing agent; Y represents a substituent; n represents 0 or 1; and m represents an integer of from 0 to 3. The material has excellent sensitivity and gradation and has improved storage stability, especially latent image stability.Type: GrantFiled: February 12, 1993Date of Patent: April 25, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yuki Mizukawa, Hideaki Naruse, Toshiyuki Watanabe, Tadahisa Sato
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Patent number: 5405969Abstract: The invention provides a process for making a thioether compound having the formula:A--S--Rcomprising reacting:(1) Compound I having the formula:A--H (I)where A comprises a carbon atom bonded to H where that carbon is either capable of ionizing to a nucleophilic state or is conjugated to such an atom, with(2) Compound II having the formula:H--SR or RSSR (II)wherein R is selected from the group consisting of:(a) a substituted or-unsubstituted aryl group or alicyclic group, said groups being carbocyclic or heterocyclic, and(b) a thiocarbonyl group,in the presence of a base and an oxidizing agent that is free of reactive halogen and that is capable of oxidizing H--SR to RSSR.Type: GrantFiled: December 10, 1993Date of Patent: April 11, 1995Assignee: Eastman Kodak CompanyInventors: Charles W. Wright, Joan C. Potenza, John E. Leary, Jr., Chang K. Kim
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Patent number: 5405735Abstract: A silver halide color photographic material light-sensitive having a photographic layer constitution on a support is provided. The photographic layer constitution is comprised of at least one yellow coupler-containing silver halide emulsion layer, at least one magenta coupler-containing silver halide emulsion layer and at least one cyan coupler-containing silver halide emulsion layer formed on the support in this order. The magenta coupler is a 2-equivalent 5-pyrazolone coupler or a 2-equivalent pyrazoloazole coupler. A non-light-sensitive layer is provided between the yellow coupler-containing silver halide emulsion layer and the magenta coupler-containing silver halide emulsion layer and it contains a compound of formula (I) in an amount of from 2.75.times.10.sup.-4 to 1.5.times.10.sup.-3 mol/m.sup.2. The molar ratio of the silver halide in the yellow coupler-containing silver halide emulsion layer to the yellow coupler therein is from 1.5 to 3.5.Type: GrantFiled: September 20, 1993Date of Patent: April 11, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Tadashi Ogawa
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Patent number: 5403703Abstract: A silver halide color photographic light-sensitive material has at least one light-sensitive silver halide emulsion layer on a support, contains a pyrazoloazole-based coupler, and further contains a compound represented by Formula (I) and/or Formula (II) below:Formula (I) A--(L.sub.1).sub.j --(L.sub.2).sub.m --[(L.sub.3).sub.n --PUG].sub.sFormula (II) A--L.sub.4 --L.sub.5 --PUGwhere A represents a coupler moiety or an oxidation-reduction group, each of L.sub.1 and L.sub.3 represents a divalent timing group, L.sub.2 represents a timing group with a valency of 3 or more and does not use electron transfer via a conjugated system, L.sub.4 represents a coupling group such as --OCO--, L.sub.5 represents a group for releasing PUG by electron transfer along a conjugated system or L.sub.4, PUG represents a photographically useful group, each of j and n independently represents 0, 1, or 2, m represents 1 or 2, and s represents a number obtained by subtracting 1 from a valence number of L.sub.Type: GrantFiled: August 13, 1992Date of Patent: April 4, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiji Mihayashi, Atsuhiro Ohkawa
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Patent number: 5403704Abstract: A silver halide color photographic material which contains at least one pyrrolotriazole cyan coupler having two electron attracting groups and at least one non-color forming, nondiffusing compound.Type: GrantFiled: February 22, 1993Date of Patent: April 4, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuhiro Yoshioka, Shigeo Hirano, Makoto Suzuki
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Patent number: 5401624Abstract: A silver halide color photosensitive material which forms a cyan dye that has superior heat resistance and that will not readily fade in a reducing atmosphere. The silver halide color photosensitive material contains in at least one layer on a support at least one coupler represented by formula (I): ##STR1## wherein R.sup.1 represents hydrogen atom or a substituent; R.sup.2 represents a substituent; X represents hydrogen atom or a group releasable on a coupling reaction with an oxidation product of a color developing agent; Z.sup.1 represents a nonmetallic atom group necessary for forming a nitrogen-containing, six-membered, heterocyclic ring which has at least one dissociative group: Z.sup.1 cannot be --C(.dbd.O)--N(R)--C(.dbd.O)--NH--; and R represents a substituent.Also disclosed is a novel dye forming coupler which exhibits a high coupling activity and which gives a dye having a large molar extinction coefficient and superior stability, the coupler being represented by the following formula (XX) or (XXI).Type: GrantFiled: November 4, 1993Date of Patent: March 28, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Kozo Sato, Yoshio Ishii, Katsuyoshi Yamakawa
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Patent number: 5399472Abstract: A silver halide emulsion is disclosed including a blend of a first image dye-forming coupler which does not intrinsically inhibit development of silver halide, and a second image dye-forming coupler which intrinsically inhibits development of silver halide. The intrinsically development inhibiting couplers are defined empirically versus a standard coupler. For purposes of this invention DIR couplers are not considered intrinsically development inhibiting couplers. Photographic elements and methods for developing images using the coupler blends are also disclosed.Type: GrantFiled: April 16, 1992Date of Patent: March 21, 1995Assignee: Eastman Kodak CompanyInventors: Jeffrey L. Hall, Richard Szajewski
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Patent number: 5397691Abstract: A silver halide color photo-graphic light-sensitive material having an excellent performance in a rapid processing and color reproduction and providing a stable photographic performance against a composition change in a processing solution is disclose, which comprises a support and provided thereon a photographic constitutional layer comprising each at least one layer of a light-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, a light-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and a light-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, and at least one non-light-sensitive layer, wherein the above silver halide emulsion layer containing the cyan dye-forming coupler contains (i) at least one of specific pyrroloazole cyan couplers, and (ii) (a) silver bromochloride grains having a silver chloride content of 90 mole % or more or silver chloride grains, each chemically sensitized with a gold compound or (b) silver brType: GrantFiled: May 28, 1993Date of Patent: March 14, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Kiyohito Takada, Kentaro Okazaki
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Patent number: 5389500Abstract: Disclosed is a method for forming color photographic images which comprises printing of color images obtained by use of a color photographic light-sensitive material, having on a support, a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer onto a printing color photographic light-sensitive material having on a support, a yellow color forming layer, a magenta color forming layer and a cyan color forming layer, wherein the following requirements (A) and (B) are fulfilled,(A) wavelength .lambda..sub.B.sup.max to give the maximum value in spectral sensitivity distribution of a blue-sensitive silver halide emulsion layer is within the limits of 415 nm to 470 nm, and the sensitivity of the blue-sensitive emulsion layer at 480 nm is not more than 35% of the sensitivity at .lambda..sub.B.sup.Type: GrantFiled: October 19, 1993Date of Patent: February 14, 1995Assignee: Konica CorporationInventors: Hiroshi Shimazaki, Kuniaki Uezawa, Satoru Shimba, Yoshitaka Yamada