Stabilizing Patents (Class 430/372)
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Patent number: 4332886Abstract: A color photographic light-sensitive material containing, in a photographic layer, a coupler and at least one compound represented by the formula (I), or at least one bis-compound (inclusive spirobis-compound) thereof, ##STR1## wherein Z represents an alkylene group having from 1 to 3 carbon atoms which can be substituted with one or more of hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, a.dbd.S group or a.dbd.O group; and R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an acyl group, an acylamino group, a sulfonamido group, a diacylamino group, a carboxy group, a sulfo group, or a hydroxy group, or R.sub.1 and R.sub.2 and R.sub.3 together form a group represented by ##STR2## (wherein Z has the same meaning as Z in formula (I)) or a 5-membered or 6-membered hydrocarbon ring or hetero-cyclic ring is described.Type: GrantFiled: October 8, 1980Date of Patent: June 1, 1982Assignee: Fuji Photo Film Co., Ltd.Inventors: Kozo Aoki, Tetsuro Kojima, Nobuo Furutachi, Satoru Sawada
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Patent number: 4330606Abstract: Compounds of the formulae ##STR1## are useful as antifading agents in photographic materials.Type: GrantFiled: September 4, 1980Date of Patent: May 18, 1982Assignee: AGFA-Gevaert AGInventors: Johannes Sobel, Karl-Wilhelm Schranz
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Patent number: 4308328Abstract: Inclusion of a stabilizer selected from phenyl and naphthyl esters of benzene and naphthalene carboxylic acids and mixtures thereof in an article, e.g. a photographic element, comprising an organic dye or precursor thereof increases stability of the dye against ultraviolet radiation. Particularly good results are achieved when the stabilizer is dispersed in a polymer of relatively high solubility parameter and low crystallinity.Type: GrantFiled: June 18, 1980Date of Patent: December 29, 1981Assignee: Monsanto CompanyInventors: Ival O. Salyer, Arthur M. Usmani
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Patent number: 4301223Abstract: A method is described for stabilizing organic substrate materials having an absorption maximum in the range of from about 300 nm to 800 nm to light which comprises making at least one complex represented by the formula (I) coexist with the organic substrate materials in an amount effective to stabilize said organic substrate material: ##STR1## wherein M represents copper, cobalt, nickel, palladium or platinum, and R.sup.1 and R.sup.2 independently represent a hydrogen atom, an alkyl group, an aryl group, an acyl group, an N-alkylcarbamoyl group, an N-arylcarbamoyl group, or an N-alkylsulfamoyl group, an N-arylsulfamoyl group, an alkoxycarbonyl group or an aryloxycarbonyl group.Type: GrantFiled: May 19, 1980Date of Patent: November 17, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Kotaro Nakamura, Yoshiaki Suzuki, Hiroshi Hara, Satoru Sawada, Shigeru Oono
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Patent number: 4287152Abstract: Dye fading during archival storage of developed color photographic film (17) is retarded by placing the film in a sealed, opaque vault (10), introducing a dry, pressurized inert gas into the vault while the latter is vented, and sealing the vault after the air within the vault has been purged and replaced by the inert gas. Preferably, the gas is nitrogen; and the vault is stored at a temperature below room temperature to preserve the color photographic emulsions on the film contained within the vault. For short-term storage, sodium thiocyanate pads (36) charged with water are placed within the vault. For long term storage, the interior of the vault is kept at a low relative humidity.Type: GrantFiled: February 7, 1980Date of Patent: September 1, 1981Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Richard B. Hoover, Charles M. Rhodes
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Patent number: 4286042Abstract: A light reflecting layer for a color diffusion transfer photographic system which comprises at least one compound represented by the general formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 9 carbon atoms, R.sub.2 represents an alkyl group having 1 to 5 carbon atoms, and R.sub.3 represents an alkyl group having 1 to 9 carbon atoms or a benzyl group which may be substituted at the .alpha.-position.Type: GrantFiled: June 6, 1979Date of Patent: August 25, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuo Sakai, Hiroshi Hayashi, Masaharu Toriuchi, Kazunobu Katoh
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Patent number: 4283486Abstract: A silver halide color photographic light-sensitive material comprising a paper support, at least one color image-forming emulsion layer, and an oxygen-impermeable layer having an oxygen permeability of not more than 2.0 ml/m.sup.2 .multidot.hr.multidot.atm, said color image-forming layer and oxygen-impermeable layer being provided on the same side of the paper support.Type: GrantFiled: April 30, 1980Date of Patent: August 11, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiaki Aono, Takeshi Hirose
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Patent number: 4282313Abstract: Thiocarbohydrazide derivatives act as stabilizers when processing photographic materials in the conventional black and white developers of the type used as first developer in color reversal processes. Furthermore, they can promote the development of color in the second developer in color reversal processes in such a way that a second exposure or fogging baths may be dispensed.Type: GrantFiled: December 20, 1978Date of Patent: August 4, 1981Assignee: Agfa-Gevaert AktiengesellschaftInventors: Ubbo Wernicke, Heinrich Odenwalder, Friedhelm Sommer
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Patent number: 4279990Abstract: Discoloring and fading of silver halide color photographic materials are effectively prevented by incorporating a compound of the formula (I) or (II) in a silver halide photographic layer thereof ##STR1## wherein A represents an aryl group; R.sub.1, R.sub.2 and R.sub.3 each represents hydrogen, a halogen atom, an alkyl group, or an aryl group, except that R.sub.1, R.sub.2 and R.sub.3 cannot all be hydrogen atoms; R.sub.4 and R.sub.5 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an acyl group, an aryloxy group, a carboxy group, a sulfo group or a hydroxy group; and R.sub.6 and R.sub.7 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an acyl group, or a hydroxy group; or R.sub.6 and R.sub.7 together form an ##STR2## group or a 5-membered or 6-membered carbocyclic or heterocyclic ring.Type: GrantFiled: September 10, 1980Date of Patent: July 21, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Kozo Aoki, Nobuo Furutachi, Satoru Sawada
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Patent number: 4277558Abstract: Silver halide photographic material containing hydroquinones and benzoquinones as anti-stain agents.Type: GrantFiled: May 21, 1980Date of Patent: July 7, 1981Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shoji Kikuchi, Toshio Yajima, Kenichi Kishi, Takashi Sasaki, Keiichi Mori, Haruhiko Sato
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Patent number: 4273854Abstract: The light stability of organic dyes is improved by the presence of at least one of the complexes represented by general formula (I) or (II) ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom; R.sup.1 and R.sup.4, which may be the same or different, each represents an alkyl group or an aryl group; R.sup.2 and R.sup.3, which may be the same or different, each represents a hydrogen atom, an alkyl group or an aryl group; or R.sup.1 and R.sup.2, and R.sup.3 and R.sup.4 may combine to represent a non-metallic atomic group necessary to form a 6-membered ring; and Z represents a non-metallic atomic group necessary to form a 5-membered ring, 6-membered ring, 8-membered ring, or 10-membered ring.Type: GrantFiled: May 15, 1980Date of Patent: June 16, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotara Nakamura, Yoshiaki Suzuki
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Patent number: 4272613Abstract: A color photographic process is described for a silver halide photographic material having at least a silver halide emulsion layer containing a dye-forming coupler, comprising developing in a color developer solution containing components (1) an aromatic primary amino color developing agent, (2) a 1-aryl-3-pyrazolidone compound having two substituents at the 4-position, and (3) at least one compound selected from compounds represented by formulae (I) and (II): ##STR1## wherein X represents a hydrocarbon group having 1 to 6 carbon atoms; R represents a carboxylic acid group, a water-soluble carboxylic acid salt group, a water-soluble carboxylic acid ester group, or a water-soluble carboxylic acid amide group; m is 1 or 2; and n is 0 or 1; and then fixing by an acid hardening fix solution.Type: GrantFiled: May 19, 1980Date of Patent: June 9, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Haruo Shibaoka, Junkichi Ogawa
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Patent number: 4271253Abstract: A method of stabilizing an organic substrate material such as a photographic dye against the action of light having an absorption maximum between about 300 nm and about 800 nm in wavelength by making co-exist with the organic substrate material at least one compound represented by the formula (I) defined in the specification is disclosed.Type: GrantFiled: May 15, 1980Date of Patent: June 2, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4271252Abstract: A method of stabilizing organic substrate materials having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light which comprises making coexist with the organic substrate at least one metal complex salt represented by the following general formula (I): ##STR1## wherein Cat represents a divalent or a monovalent cation, and n is 1 or 2. A photographic material thus stabilized is also disclosed.Type: GrantFiled: May 15, 1980Date of Patent: June 2, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4269926Abstract: A method of stabilizing an organic substrate material having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light without detracting from the color hue and the purity of the organic substrate material, which comprises making at least one metal complex salt represented by the following formula (I) coexist with the organic substrate material: ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom; R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 each represents a hydrogen atom, a halogen atom or a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic ring which may be attached directly to the carbon atom in the respective ring or through a divalent coupling group, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.6 and R.sup.7, R.sup.7 and R.sup.8, or R.sup.8 and R.sup.9 may combine to form the non-metal atoms necessary to complete a 6-membered ring; R.sup.Type: GrantFiled: May 15, 1980Date of Patent: May 26, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4268593Abstract: Recording material, for color photography, which contains at least one piperidine compound containing one or more alkyl-substituted phenol groups, as the light stabilizer, in at least one light-sensitive silver halide emulsion layer, one interlayer and/or one protective layer. Colored images which are obtained by image-wise exposure and development of this recording material for color photography display good stability towards the action of visible and ultraviolet light.Type: GrantFiled: November 5, 1979Date of Patent: May 19, 1981Assignee: Ciba-Geigy AGInventors: David G. Leppard, Michael Rasberger
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Patent number: 4268605Abstract: Organic substrate materials having absorption maxima between 300 and 800 nm can be stabilized against the action of light by the presence of at least one compound represented by either of the following general formula (I) or (II): ##STR1## where M represents a metal atom selected from the group comprising Cu, Co, Ni, Pd and Pt; R.sup.1, R.sup.2, R.sup.3 and R.sup.4, may be the same or different and each represents a hydrogen atom, a halogen atom, cyano group, an alkyl group, an aryl group, a cycloalkyl group, or a heterocyclic ring, each of the latter four groups being bonded directly or via a divalent connecting group to the corresponding carbon atom of the benzene ring. Alternatively, R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, or R.sup.3 and R.sup.4, may combine to represent the non-metallic atoms necessary to complete a 6-membered ring.R.sup.5 and R.sup.Type: GrantFiled: May 15, 1980Date of Patent: May 19, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4266019Abstract: A silver halide color photographic material containing a yellow coupler represented by following general formula (I): ##STR1## wherein A represents a yellow coupler from which one hydrogen atom bound to a carbon atom other than at a coupling active site is removed, and R.sub.1 and R.sub.2 each represents a straight chain or branched alkyl group containing 2 to 16 carbon atoms, with the sum of the carbon atoms contained in R.sub.1 and R.sub.2 being 10 to 20 is disclosed.Type: GrantFiled: September 13, 1979Date of Patent: May 5, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hidetoshi Kobayashi, Mitsugu Tanaka, Kozo Inouye, Hideki Naito
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Patent number: 4256817Abstract: A method of stabilizing organic substrate materials having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light which comprises making coexist with the organic substrate at least one metal complex salt represented by the following general formula (I): ##STR1## wherein Cat represents a divalent or a monovalent cation, and n is 1 or 2. A photographic material thus stabilized is also disclosed.Type: GrantFiled: December 14, 1978Date of Patent: March 17, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4256830Abstract: Propyne compounds, which are capable of stabilizing photographic materials against color fog and flattening of the gradation are disclosed. They may be added to emulsion layers and to processing baths.Type: GrantFiled: November 16, 1978Date of Patent: March 17, 1981Assignee: AGFA-Gevaert, A.G.Inventors: Gerhard Jager, Anita von Konig, Armin Voigt, Karl H. Buchel
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Patent number: 4254195Abstract: Organic substrate materials having absorption maxima between 300 and 800 nm can be stabilized against the action of light by the presence of at least one compound represented by either of the following general formula (I) or (II): ##STR1## where M represents a metal atom selected from the group comprising Cu, Co, Ni, Pd and Pt; R.sup.1, R.sup.2, R.sup.3 and R.sup.4, may be the same or different and each represents a hydrogen atom, a halogen atom, cyano group, an alkyl group, an aryl group, a cycloalkyl group, or a heterocyclic ring, each of the latter four groups being bonded directly or via a divalent connecting group to the corresponding carbon atom of the benzene ring. Alternatively, R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, or R.sup.3 and R.sup.4, may combine to represent the non-metallic atoms necessary to complete a 6-membered ring.R.sup.5 and R.sup.Type: GrantFiled: April 11, 1979Date of Patent: March 3, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4254216Abstract: A color photographic material comprising a support and at least one layer thereon containing at least one compound of formula [I]: Formula [I] ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each are defined in the specification and claims of this application.The compound of formula [I] is incorporated in a color photographic material to prevent the discoloration and fading-in-color of the color photographic material.Type: GrantFiled: September 6, 1978Date of Patent: March 3, 1981Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Takashi Uchida, Takashi Sasaki, Shoji Kikuchi, Katsuo Mogaki, Masahiko Taguchi, Syun Takada
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Patent number: 4251624Abstract: A method of treating colored photographic prints and film after the full development thereof to prevent the prints or film having stain marks thereon and to stabilize the colored images thereon from fading due to exposure to light, high humidity and high temperatures.Type: GrantFiled: February 23, 1979Date of Patent: February 17, 1981Inventor: Evelyn F. England
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Patent number: 4248949Abstract: A method of stabilizing organic substrate materials against the action of light is disclosed wherein at least one compound represented by the following general formula (I) is made to coexist with the organic substrate material ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom, R.sup.1 represents an alkyl or an aryl group, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 may be the same or different and each represents a hydrogen atom, a halogen atom, an alkyl group or an aryl group. Alternatively, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4 or R.sup.4 and R.sup.5 may combine together to form a 6-membered ring. A photographic material containing the above compound is also disclosed.Type: GrantFiled: December 15, 1978Date of Patent: February 3, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4247628Abstract: The stability of a cyan dye image formed by phenol and naphthol couplers is improved with respect to "dark fading" by incorporating in the silver halide color photographic material in which the dye image is formed at least one 2-phenyl benzotriazole compound having in the 2'-position an --OR group wherein R is an organic residue.Type: GrantFiled: January 3, 1980Date of Patent: January 27, 1981Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Takashi Uchida, Shoji Kikuchi, Takashi Sasaki, Mikio Sato
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Patent number: 4246330Abstract: A method of stabilizing an organic substrate material having an absorption maximum in the wavelength region of about 300 nm to about 800 nm to light without detracting from the color hue and the purity of the organic substrate material, which comprises making at least one metal complex salt represented by the following formula (I) coexist with the organic substrate material: ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom; R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 each represents a hydrogen atom, a halogen atom or a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic ring which may be attached directly to the carbon atom in the respective ring or through a divalent coupling group, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.6 and R.sup.7, R.sup.7 and R.sup.8, or R.sup.8 and R.sup.9 may combine to form the non-metal atoms necessary to complete a 6-membered ring; R.sup.Type: GrantFiled: April 11, 1979Date of Patent: January 20, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4246329Abstract: The light stability of organic dyes is improved by the presence of at least one of the complexes represented by general formula (I) or (II) ##STR1## wherein M represents a Cu, Co, Ni, Pd or Pt atom; R.sup.1 and R.sup.4, which may be the same or different, each represents an alkyl group or an aryl group; R.sup.2 and R.sup.3, which may be the same or different, each represents a hydrogen atom, an alkyl group or an aryl group; or R.sup.1 and R.sup.2, and R.sup.3 and R.sup.4 may combine to represent a non-metallic atomic group necessary to form a 6-membered ring; and Z represents a non-metallic atomic group necessary to form a 5-membered ring, 6-membered ring, 8-membered ring, or 10-membered ring.Type: GrantFiled: December 14, 1978Date of Patent: January 20, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4245018Abstract: The light stability of organic substrate materials such as photographic dyes is improved by the copresence of at least one of the complexes shown by following formulae I, II, III, or IV ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represents a hydrogen atom, a halogen atom, a cyano group or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group bonded directly or through a divalent connecting group to the carbon atom of a benzene ring; or R.sup.1 and R.sup.2 ; R.sup.2 and R.sup.3 ; or R.sup.3 and R.sup.4 combine to represent the non-metallic atoms necessary to complete a 6-membered ring; R.sup.5 and R.sup.8 each represents a hydrogen atom, an alkyl group, or an aryl group; R.sup.6 represents a hydrogen atom, an alkyl group, an aryl group, or a hydroxyl group; R.sup.7 represents an alkyl group or an aryl group; and Z represents the non-metallic atoms necessary to complete a 5-membered or 6-membered ring.Type: GrantFiled: July 11, 1979Date of Patent: January 13, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4242431Abstract: A method of stabilizing an organic substrate material such as a photographic dye against the action of light having an absorption maximum between about 300 nm and about 800 nm in wavelength by making co-exist with the organic substrate material at least one compound represented by the formula (I) defined in the specification is disclosed.Type: GrantFiled: December 14, 1978Date of Patent: December 30, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4242430Abstract: Organic substrates, especially photographic dyes, are stabilized against light by using a Cu, Co, Ni, Pd or Pt complex of formula (I). ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; R.sub.1 and R.sub.6 may be the same or different and represent a hydrogen atom or an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group or an arylsulfonyl group; and R.sub.2, R.sub.3, R.sub.4 and R.sub.5 which may be the same or different represent a hydrogen atom, a halogen atom, a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group bonded to a carbon atom on a benzene ring directly or through a divalent linking group, or R.sub.2 and R.sub.3, R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 respectively may combine and represent the non-metallic atomic groupings required to form a 6-membered ring.Type: GrantFiled: November 14, 1978Date of Patent: December 30, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki
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Patent number: 4242429Abstract: The stability of organic substrate materials having an absorption peak between 300 and 800 nm in wavelength can be improved by the presence of a compound having the following general structural formula (I): ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen or halogen atom, a cyano, an alkyl, an aryl, a cycloalkyl, or a heterocyclic group which may be substituted or unsubstituted and which is attached to the carbon atom in the benzene ring directly or through a divalent connecting group; alternatively, each of R.sub.1 and R.sub.2, R.sub.2 and R.sub.3, or R.sub.3 and R.sub.4 may combine to form the non-metallic atoms necessary to complete a 6-membered ring; and R.sub.5 represents a hydrogen atom or methyl.Type: GrantFiled: October 30, 1978Date of Patent: December 30, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Yoshiaki Suzuki
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Patent number: 4241154Abstract: The stability of organic substrate materials having an absorption peak between 300 and 800 nm in wavelength can be improved by the presence of a compound represented by the following general formula (I), ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt atom; Cat represents a divalent cation or two monovalent cations; X represents S or a ##STR2## group where R.sup.1 and R.sup.2 each represents a CN, a COR.sup.3, a COOR.sup.4, a CONR.sup.5 R.sup.6, or a SO.sub.2 R.sup.7 group and R.sup.1 may combine with R.sup.2 to form a 5- or 6-membered ring; R.sup.3, R.sup.4 and R.sup.7 each represents an alkyl or an aryl group, R.sup.5 and R.sup.6 each represents a hydrogen atom, an alkyl or an aryl group, and n represents an integer of 1 or 2.Type: GrantFiled: October 30, 1978Date of Patent: December 23, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Yoshiaki Suzuki
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Patent number: 4241155Abstract: A method for stabilizing an organic substrate to light the substrate having an absorption maximum in the range of about 300 nm-about 800 nm, which comprises making at least one complex represented by following general formula (I) coexist with the substrate: ##STR1## wherein M represents an atom selected from the group consisting of Cu, Co, Ni, Pd and Pt, X represents O or S, R.sub.1 represents an alkyl group, an aryl group, an alkoxy group, an aryloxy group or, when taken together, the R.sub.1 's bound to the same phosphorus atom represent the non-metallic atoms necessary to complete a 6-membered ring together with the phosphorus atom. A photographic element containing the above complex is also claimed.Type: GrantFiled: November 14, 1978Date of Patent: December 23, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki, Shigeru Oono
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Patent number: 4239843Abstract: The stability of organic substrates having an absorption maximum between 300 and 800 nm in wavelength can be improved by at least one compound represented by the formula (I); ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; X.sub.1, X.sub.2, X.sub.3 and X.sub.4 eachrepresents an oxygen or sulfur atom, R.sub.1 and R.sub.2 each represents an alkyl, an aryl, a cycloalkyl, an oxocyclalkyl or a heterocyclic group attached to the carbon atom on the chelate ring directly or through a divalent connecting group, R.sub.3 represents a hydrogen atom, an alkyl, an aryl, a cycloalkyl, an oxocycloalkyl or a heterocyclic group attached to the carbon atom on the chelate ring directly or through a connecting group whereby R.sub.1, R.sub.2 and R.sub.3 may be the same or different and R.sub.1 and R.sub.3 or R.sub.2 and R.sub.3 may combine with each other to form a 5-, 6- or 7- member ring structure.Type: GrantFiled: October 30, 1978Date of Patent: December 16, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Hara, Yoshiaki Suzuki
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Patent number: 4235957Abstract: In a dry physical development photothermographic element for a dry thermal silver-dye bleach process wherein the element comprises a silver halide complexing concentration of a silver halide complexing agent improvements are provided when the complexing agent is an organic ammonium chloride, bromide or iodide. After imagewise exposure of the element, a dye image can be produced by uniformly heating the element. Improvements are also produced by providing a dry activator element for producing a dye image in a separate photographic element by means of a dry physical development thermal dye-bleach process, wherein the activator element comprises a support having thereon a layer comprising a synthetic hydrophobic polymeric binder, a silver halide complexing concentration of a silver halide complexing agent, as described, a bleachable dye and a thermal solvent.Type: GrantFiled: January 25, 1979Date of Patent: November 25, 1980Assignee: Eastman Kodak CompanyInventors: Carl F. Kohrt, Roland G. Willis
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Patent number: 4232114Abstract: A color photographic light-sensitive element having (1) reduced fog, (2) low reduction in sensitivity and (3) good yellow dye image light fastness, and comprising a support having thereon at least one silver halide photographic emulsion and optionally one or more non-light-sensitive subsidiary layers, wherein a blue-sensitive silver halide photographic emulsion layer and/or a non-light-sensitive layer adjacent thereto contains at least one asymmetrical hydroquinone compound selected from the group consisting of 2-methyl-5-tert-octylhydroquinone, 2-tert-butyl-5-tert- amylhydroquinone, 2-tert-butyl-5-tert-hexylhydroquinone, 2-methyl-5-tert-hexylhydroquinone, 2-methyl-5-tert-amylhydroquinone, 2-methyl-5-(1'-methylcyclohexyl)hydroquinone and precursors thereof wherein either or both hydroxyl groups are modified with an acyl group represented by the formulae: ##STR1## wherein R represents an alkyl group.Type: GrantFiled: September 1, 1978Date of Patent: November 4, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiichi Adachi, Tadao Shishido, Akio Mitsui
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Patent number: 4229521Abstract: A new bath composition for processing photographic materials with at least one silver halide layer is provided in which discolorations caused by Fe III-bleaching agents are prevented by an after-treatment bath comprising phosphoric acid or a phosphonic acid as hereinafter described.Type: GrantFiled: July 11, 1978Date of Patent: October 21, 1980Assignee: AGFA-Gevaert, A.G.Inventors: Karl Frank, Hans-Dieter Block
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Patent number: 4228235Abstract: A color photographic material having stabilized dye images is described which has a compound with the formula: ##STR1## where R and R.sub.2 individually represent an alkyl group, R represents an n-valent organic group and n is an integer of from 1 to 6.Type: GrantFiled: January 8, 1979Date of Patent: October 14, 1980Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kyohei Okonogi, Mikio Sato, Katsuo Mogaki, Takashi Sasaki, Takashi Uchida
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Patent number: 4211836Abstract: A method for dispersing oil-soluble photographic additives into a hydrophilic colloid composition is disclosed characterized by the use of lecithin in conjunction with an anionic surface active agent containing an --SO.sub.3 M or --OSO.sub.3 M moiety wherein M represents a cation and a hydrophobic group having 8 to 30 carbon atoms.Type: GrantFiled: January 18, 1979Date of Patent: July 8, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Masakazu Yoneyama, Yasuo Mukunoki, Takeshi Mikami, Jun Sasaki
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Patent number: 4210714Abstract: Process for the preparation of silver images by imagewise exposure of a photographic material comprising at least one light-sensitive silver halide emulsion layer and treatment of the material with a developer composition, wherein the improvement comprises the development is carried out in the presence of 3-mercapto-5-(2-furyl)-1,2,4-triazole. The 3-mercapto-5-(2-furyl)-1,2,4-triazole decreases the fog during development, and when this is the first development in a black-and-white or color reversal process, increases the reversal silver or color density.Type: GrantFiled: March 15, 1978Date of Patent: July 1, 1980Assignee: AGFA-Gevaert, A.G.Inventors: Heinrich Odenwalder, Anita von Konig, Franz Moll, Walter Patzold, Lothar Rosenhahn, Friedhelm Sommer
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Patent number: 4198239Abstract: An improvement in the prevention color-fog and staining in color-photographic materials is obtained by the inclusion of acylamino substituted hydroquinones derivatives. The compounds can easily be synthesized do not crystalize from their dispersions and are not oxidized to colored by-products during development.Type: GrantFiled: August 31, 1977Date of Patent: April 15, 1980Assignee: AGFA-Gevaert, A.G.Inventors: Hans-Heinrich Credner, Rigobert Otto, Karl-Wilhelm Schranz
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Patent number: 4175968Abstract: Undesired color fog obtained on color development of a color photographic material with a primary aromatic amino color developing agent may be reduced when the development is carried out in the presence of an antifogging agent (antistaining agent) of the formula ##STR1## in which R.sup.1 is an acyl group and R.sup.2 and R.sub.3 are (same or different) hydrogen, alkyl, halogen, sulfo or carboxyl.The antistaining agent is preferable incorporated in non-diffusible form in one or more of the layers of the photographic material.Type: GrantFiled: July 17, 1978Date of Patent: November 27, 1979Assignee: AGFA-Gevaert, A.G.Inventors: Hans-Heinrich Credner, Karl-Wilhelm Schranz