Anti-ultraviolet Fading Patents (Class 430/931)
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Patent number: 5474882Abstract: Disclosed is a silver halide color photographic material. The material comprises a support having thereon at least one photosensitive silver halide emulsion layer and at least one non-photosensitive hydrophilic colloid layer.Type: GrantFiled: May 9, 1994Date of Patent: December 12, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Akiko Shono
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Patent number: 5462846Abstract: Disclosed is a silver halide color photographic material having at least one non-coloring layer. The layer contains (i) at least one water-insoluble polymer having a number average molecular weight of less than 2000, which is obtained obtained by polymerizing at least one monomer having an aromatic group, and optionally contains (ii) at least one UV absorbent selected from 2-(2'-hydroxyphenyl)benzotriazoles, benzophenones and triazines and (iii) at least one high boiling point organic solvent having a refractive index of 1.50 or less. The photographic material has high light fastness.Type: GrantFiled: November 22, 1994Date of Patent: October 31, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroyuki Yoneyama
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Patent number: 5401622Abstract: A thermally developable color photosensitive material comprises a support, having thereon a photosensitive silver halide, a binder, an electron transfer agent, an electron donor, and a reducible dye donating compound which is capable of being reduced and releasing a diffusible dye, wherein the reducible dye donating compound and a compound represented by the following formula (1) are present together in the form of an emulsified dispersion in the binder.Type: GrantFiled: October 26, 1993Date of Patent: March 28, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Makoto Yamada
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Patent number: 5385815Abstract: A photographic element comprising a UV absorbing polymer latex which is loaded with a non-polymeric UV absorbing compound. The polymer is a homopolymer or heteropolymer comprising monomeric units containing a 2-hydroxybenzotriazole. The benzotriazole preferably is of the formula I: ##STR1## wherein: the phenyl ring and benzo ring are optionally additionally substituted; and one of m and n is 1, and M and N have the formula: ##STR2## wherein R3 is H or an alkyl group; L is a bivalent linking group; and p is 0 or 1. The elements may additionally have a polmer present (which is preferably different from the UV absorbing polymer) which has a glass transition temperature (T.sub.g) of less than 5.degree. C.Type: GrantFiled: December 29, 1993Date of Patent: January 31, 1995Assignee: Eastman Kodak CompanyInventors: Edward Schofield, Richard P. Szajewski
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Patent number: 5384235Abstract: A photographic element with particular polymeric ultraviolet absorbers. The ultraviolet absorbers have repeating units of the formula: ##STR1## wherein: X is O or NH;Y is H or halogen;R.sub.1 is selected from the group consisting of H, halogen, alkoxy , straight chain or branched alkyl group of 1 to 8 carbons;R.sub.2 is C.sub.2 -C.sub.10 alkylene which may be straight chain or branched; andR.sub.3 is H or CH.sub.3.Elements of the invention have good fresh Dmin and image dye stability, and the ultraviolet absorbers therein are highly light stable.Type: GrantFiled: July 1, 1992Date of Patent: January 24, 1995Assignee: Eastman Kodak CompanyInventors: Tien-Teh Chen, Edward Schofield, Hwei-Ling Yau, Lal C. Vishwakarma
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Patent number: 5372922Abstract: A method of preparing a photographic element containing a UV filter composition. In the method a UV absorbing polymer latex is prepared by emulsion polymerization, then loaded with a high boiling point organic solvent. The high boiling poing organic solvent has a boiling point at atmospheric pressure of at least 200.degree. C. The loaded polymer latex is then incorporated into a photographic element. Photographic elements containing UV polymer latexes particularly of a UV absorbing polymer containing benzotriazole monomers loaded with high boiling point organic solvents, are also provided.Type: GrantFiled: December 29, 1993Date of Patent: December 13, 1994Assignee: Eastman Kodak CompanyInventors: Edward Schofield, Tienteh Chen
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Patent number: 5364749Abstract: A photographic material is described which comprises, on a base, blue-sensitive, green-sensitive and/or red-sensitive silver-halide emulsion layers and if desired a protection layer, a layer containing a UV absorber being arranged between the uppermost silver-halide emulsion layer and the protection layer or on top of the uppermost silver-halide emulsion layer, wherein the UV absorber conforms to the formula ##STR1## in which the radical R.sub.1 is alkyl, substituted alkyl, alkenyl, glycidyl, cycloalkyl or phenylalkyl, and R.sub.12 is alkyl, benzyl, cyclohexyl, phenyl, substituted phenyl or alkoxy.Type: GrantFiled: June 1, 1992Date of Patent: November 15, 1994Assignee: Ciba-Geigy CorporationInventors: David G. Leppard, Kurt Burdeska, Mario Slongo
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Patent number: 5360705Abstract: 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: October 22, 1992Date of Patent: November 1, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroyuki Yoneyama
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Patent number: 5316901Abstract: UV-sensitive negative acting silver halide photographic elements for contact processes which can be safely handled under white light and have increased UV exposure latitude, said elements comprising a support base, a hydrophilic colloidal silver halide emulsion layer comprising UV sensitive negative acting silver halide grains, and one or more hydrophilic colloidal layers, wherein said silver halide emulsion is reactively associated with a water-removable UV-absorbing compound having at least 80% of the absorption in the range from 350 to 400 micronmeter.Type: GrantFiled: July 13, 1992Date of Patent: May 31, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Alberto Vacca, Aldo Sgarbi
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Patent number: 5302497Abstract: Compounds of the formula ##STR1## wherein R.sub.o, is hydrogen or alkylene-COOR where R is alkyl or hydroxyalkyl, R.sub.1 is hydrogen, alkyl, hydroxyalkyl, alkenyl or acyl, R.sub.2 and R.sub.3 are independently hydrogen, alkyl, alkenyl or alkoxy, R.sub.6 is hydrogen or alkyl, and X is --CH.sub.2 --, --NH--, --S-- or --O--, are suitable as UV absorbers for use in photosensitive organic materials in combination with a sterically hindered amine or hydroxyphenylbenzotriazole derivative.Type: GrantFiled: August 19, 1992Date of Patent: April 12, 1994Assignee: Ciba-Geigy CorporationInventors: Godwin Berner, Andreas Valet
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Patent number: 5300414Abstract: A photographic material is described which comprises, on a base, blue-sensitive, green-sensitive and/or red-sensitive silver-halide emulsion layers and, if desired, a protection layer, a layer containing a UV absorber being arranged between the uppermost silver-halide emulsion layer and the protection layer, or on top of the uppermost silver-halide emulsion layer, wherein the UV absorber conforms to the formula ##STR1## in which the radicals E.sub.1, E.sub.2 and E.sub.3 are independently alkyl, substituted alkyl, alkenyl, glycidyl, cycloalkyl, phenylalkyl or siloxyl.Type: GrantFiled: September 1, 1992Date of Patent: April 5, 1994Assignee: Ciba-Geigy CorporationInventors: David G. Leppard, Vien V. Toan, Mario Slongo
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Patent number: 5298380Abstract: Compounds of formula ##STR1## wherein R.sub.1 is hydrogen, alkyl, phenylalkyl or cyclohexyl, R.sub.2 is alkyl, phenylalkyl, cyclohexyl, alkoxy or hydroxyalkoxy, and R.sub.3 is phenyl or substituted phenyl, are very suitable for use as UV absorbers in photographic materials with transparent substrates.Type: GrantFiled: September 1, 1992Date of Patent: March 29, 1994Assignee: Ciba-Geigy CorporationInventor: David G. Leppard
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Patent number: 5296519Abstract: Disclosed is a novel UV light absorbing compound which can preferably be employed in the art of colored molding plastics, resin films, heat-sensitive transfer materials, liquid crystal display materials, color photographs and the like, and method for producing thereof. The UV light absorbing compound is characterized by the general formula: ##STR1## wherein R.sup.1 represents linear or branched alkyl or aralkyl group, and R.sup.2 represents --CN or --COOR.sup.3, wherein R.sup.3 represents substituted or unsubstituted alkyl or aralkyl group.Type: GrantFiled: June 11, 1992Date of Patent: March 22, 1994Assignee: Orient Chemical Industries, Ltd.Inventor: Masahiro Otsuka
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Patent number: 5215876Abstract: A radiographic element comprises a polyester support having double sided silver halide emulsion layers. An ultraviolet light absorbing methine compound is copolymerized with the support and is present in an amount sufficient to reduce the average percent transmission of ultraviolet light over the range of wavelength of from about 350 nm to about 395 nm to less than about 25 percent, and whereby the percent transmittance of said element is at least about 55 percent at a wavelength of about 410 nm for an element thickness of about 0.007 inches.Type: GrantFiled: August 29, 1991Date of Patent: June 1, 1993Assignee: Eastman Kodak CompanyInventors: Wayne P. Pruett, Max A. Weaver, Elizabeth K. Priebe, Larry K. Maier, Robert E. Dickerson
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Patent number: 5213954Abstract: UV-sensitive negative acting silver halide photographic elements are used in contacting processes, and especially dry etch correction processes and can be safely handled under white light. These elements comprise a support base, a negative acting hydrophilic colloidal silver halide emulsion layer comprising photographic silver halide grains, and one or more hydrophilic colloidal layers, wherein said silver halide emulsion support base has on its surface most distant from the layer an antihalation layer comprising a water-removable UV-absorbing compound having significant absorption in the range of from 350 to 400 nm.Type: GrantFiled: November 19, 1990Date of Patent: May 25, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Wayne W. Weber, II, Donald W. Heseltine
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Patent number: 5200307Abstract: A silver halide color photographic material containing a support having thereon photographic constitutional layers, which comprises(a) a magenta coupler represented by formula (I) that is contained with a high-boiling organic solvent at a prescribed weight ratio in a magenta coupler containing layer, and(b) a ultraviolet absorbing agent represented by formula (II) that is contained with a hydrophobic polymer in a non-photosensitive layer located at a position farther than a cyan coupler containing emulsion layer for the base: ##STR1## wherein R.sub.1 represents a hydrogen atom or a substituent, Z.sub.a, Z.sub.b, and Z.sub.c each represent a methine, substituted methine, .dbd.N--, or --NH--, Y represents a hydrogen atom or a group capable of being released upon a coupling reaction with the oxidized product of a developing agent, and the compound may form a dimer or higher polymer through R.sub.1, Y, or Z.sub.a, Z.sub.b, or Z.sub.c, that is a substituted methine, ##STR2## wherein R.sub.2, R.sub.3, and R.sub.Type: GrantFiled: September 30, 1991Date of Patent: April 6, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Osamu Takahashi
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Patent number: 5112729Abstract: A silver halide color photographic photosensitive material which has at least one silver halide emulsion layer on a support, wherein at least one type of cyan coupler which is represented by general formula (A) indicated below is included in at least one layer, a high boiling point organic solvent is present in the layer which contains the coupler in a weight ratio with respect to the coupler in the layer of not more than 0.3, and an ultraviolet absorber is included in the layer at a rate of at least 0.05 in terms of the ratio by weight with respect to the cyan coupler: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, T, and l' are as defined in the specification.Type: GrantFiled: January 22, 1990Date of Patent: May 12, 1992Assignee: Fuji Photo Film Co., Ltd.Inventor: Keiji Mihayashi
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Patent number: 5112728Abstract: A silver halide photographic light-sensitive material comprising a support having thereon a photographic silver halide emulsion layer containing a magenta coupler, a photographic silver halide emulsion layer containing a yellow coupler, a photographic silver halide emulsion layer containing a cyan coupler and an non-light-sensitive layer containing a binder and a UV absorbent, wherein said silver halide photographic light-sensitive material has not more than 7.6 g/m.sup.2 of gelatin, said UV absorbent is liquid at an ordinary temperature, and said magenta coupler is a compound represented by Formula I; ##STR1## wherein Z represents a non-metallic group necessary to form a nitrogen-containing heterocyclic ring, X represents a hydrogen atom or a group capable of being split upon reaction with an oxidation product of a color developing agent, and R represents a hydrogen atom or a substituent.Type: GrantFiled: September 25, 1990Date of Patent: May 12, 1992Assignee: Konica CorporationInventors: Masaki Tanji, Toyoki Nishijima, Takahiro Ogawa, Shun Takada, Kazuhiro Murai
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Patent number: 5110717Abstract: An object of the invention is to overcome disadvantages of prior practices. A further object of the invention is to provide a process for providing particles that result in improved UV absorption in photographic products.An additional object is to provide lower cost polymer particle dispersions.The invention is generally accomplished by mechanically grinding a crystalline material to a desired particle size in a liquid that is not a solvent for the material, heating said crystalline particles dispersed in said liquid to above their melting temperature, and cooling the melted particles in said liquid to form amorphous particles. In preferred forms of the invention, the material is a photographically useful material, such as ultraviolet light absorber or coupler.Type: GrantFiled: December 17, 1990Date of Patent: May 5, 1992Assignee: Eastman Kodak CompanyInventors: David A. Czekai, John F. Bishop
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Patent number: 5070007Abstract: Phenolic thiane derivatives of the formula I or II ##STR1## in which n is 0, 1 or 2 and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, T and Z are as defined in claim 1, are effective stabilizers for color photography recording materials, in particular for the yellow layer. They act not only as light stabilizers but also as stabilizers against thermal oxidation.Type: GrantFiled: February 6, 1991Date of Patent: December 3, 1991Assignee: Ciba-Geigy AGInventors: Jean Rody, David G. Leppard
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Patent number: 5032498Abstract: The novel UV-absorbers are compounds of the formula ##STR1## in which R.sup.1 is, for example, hydrogen, n is one of the numbers 1 or 2 and R.sup.2 is an appropriate monovalent or divalent radical, for example --OH or --O-CH.sub.2 CH.sub.2 --O--. The UV-absorbers are used in particular for stabilising and improving lacquers and photographic material.Type: GrantFiled: August 21, 1990Date of Patent: July 16, 1991Assignee: Ciba-Geigy CorporationInventors: Jean Rody, Mario Slongo
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Patent number: 5028519Abstract: A silver halide color photosensitive material is disclosed. The photosensitive material comprises a support and a photographic layer. According to the present invention, the photographic layer contains a heterocyclic compound. The heterocyclic compound is, for example, represented by the following formula [I]: ##STR1## in which n is 1, 2 or 3; and each of Ra and Rb independently is an acyl group, a sulfonyl group, a sulfinyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a phosphoryl group, a sulfamoyl group or a carbamoyl group. The other heterocyclic compounds represented by the formulas [II], [III], [IV], [V], and [VI] are also disclosed.Type: GrantFiled: December 5, 1989Date of Patent: July 2, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Masakazu Morigaki, Nobuo Seto
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Patent number: 5004678Abstract: A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, the silver halide color photographic material containing at least one pyrazoloazole type coupler represented by general formula (I) described below and at least one compound represented by general formula (II) described below. ##STR1## wherein R.sub.1 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 developing agent; Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.N-- or --NH--, one of the Za--Zb bond and the Zb--Zc bond being a double bond and the other being a single bond; when the Zb--Zc bond is carbon-carbon double bond, the Zb-Zc bond may be a part of a condensed aromatic ring; R.sub.Type: GrantFiled: July 5, 1989Date of Patent: April 2, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuo Seto, Masakazu Morigaki
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Patent number: 4992358Abstract: A color photographic light-sensitive material comprising a reflective support having thereon a plurality of silver halide emulsion layers of which the emulsion layer located farthest from said support has, on each of both the support side thereof and the uppermost side at least one nonlight-sensitive layer containing an effective amount of an ultraviolet absorbing agent, said ultraviolet absorbing agent being used in said nonlight-sensitive layer on the uppermost side of said emulsion layer being a 2-(2'-hydroxyphenyl)benzotriazole-type compound which is in the liquid form at normal room temperature.Type: GrantFiled: March 30, 1989Date of Patent: February 12, 1991Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4946768Abstract: 3-Aminoallylidenemalononitrile compounds corresponding to the formula: ##STR1## wherein R.sub.1 is a short alkyl chain having 1 to 3 carbon atoms and R is a substituted or unsubstituted long alkyl chain greater than 10 carbon atoms, are useful in photography for absorbing ultraviolet radiations in the range from 360 to 400 nm, with no undesired absorption near 420 nm, when introduced in a photographic gelatin layer.Type: GrantFiled: July 2, 1986Date of Patent: August 7, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: Angelo Vallarino
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Patent number: 4933271Abstract: Tetrahydrothiopyran compound of the formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, X and n are as defined in claim 1, are effective stabilizers for dyes and dye couplers in photographic layers. In particular, they provide protection from damage by light. They are preferably used in combination with a phenolic antioxidant.Type: GrantFiled: September 29, 1988Date of Patent: June 12, 1990Assignee: Ciba-Geigy AGInventors: Jean Rody, David G. Leppard
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Patent number: 4931382Abstract: A silver halide color photographic light-sensitive material containing a combination of a pyrazolo-azole magenta coupler and a specific dye image stabilizing agent is disclosed. The stabilizing agent is effective to improve fastness of a dye image formed by the coupler to light, heat and moisture.Type: GrantFiled: September 12, 1989Date of Patent: June 5, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Masakazu Morigaki, Toshio Kawagishi, Kiyoshi Nakazyo, Nobuo Seto, Sadao Kamei
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Patent number: 4906555Abstract: A multilayer silver halide color photographic material comprising a reflective support and a blue-, green- and red-sensitive emulsion layer containing at least one yellow coupler (represented by the general formula (I)), magenta coupler (represented by the general formula (II)), and cyan coupler (represented by the general formula (III)), respectively, and the blue-sensitive emulsion layer also contains at least one compound represented by the general formulae (A) or (B), all compounds are as disclosed in the specification.Type: GrantFiled: November 3, 1988Date of Patent: March 6, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Takeshi Hirose, Nobuo Furutachi, Masakazu Morigaki
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Patent number: 4865957Abstract: A silver halide photographic material is disclosed, comprising a reflective support having provided thereon a silver halide emulsion layer containing at least one 2,5-diacylaminophenol cyan coupler, a silver halide emulsion layer containing a magenta coupler, and a silver halide emulsion layer containing a yellow coupler, wherein said silver halide emulsion layer containing a cyan coupler and/or a photographic layer that is farther from the support than the cyan coupler-containing layer contains at least one of 2-(2'-hydroxyphenyl)benzotriazole ultraviolet absorbents and at least one of benzophenone ultraviolet absorbents. By the combined use of the 2-(2'-hydroxyphenyl)benzotriazole ultraviolet absorbents and the benzophenone ultraviolet absorbents, light-fastness of a cyan image is markedly improved, to provide a color image having a satisfactory color balance.Type: GrantFiled: October 15, 1986Date of Patent: September 12, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Sakai, Keiichi Adachi
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Patent number: 4840870Abstract: In a heat-transfer image-receiving element adapted to have a superposed relation, at least during a heat-transfer processing, with a heat-transfer element containing a heat-transferable dye donator, wherein said heat-transfer image-receiving element comprises at least one of compounds having the following general Formula (I), (II) or (III) and at least one of compounds having the following general Formula (IV) ##STR1## wherein R.sub.1, R.sub.1 ', R.sub.3, R.sub.3 ' and R.sub.5 each is a hydrogen atom, alkyl, alkenyl, cycloalkyl, phenyl, naphthyl, heterocyclic, acyl, alkylsulfonyl, arylsulfonyl or aralkylsulfonyl group; R.sub.2, R.sub.4, R.sub.4 ', R.sub.6 and R.sub.7 each is a hydrogen atom, a halogen atom, or a monovalent organic group, l is an integer of from 1 to 4, q is an integer of from 1 to 6, m, n and p each is an integer of from 1 to 3, provided if the l, m, n, p and q each is an integer of not less than 2, the R.sub.2, R.sub.4, R.sub.4 ', R.sub.6 and R.sub.Type: GrantFiled: March 14, 1988Date of Patent: June 20, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masaru Iwagaki, Toyoaki Masukawa, Tawara Komamura, Wataru Ishikawa, Kimie Hoshino
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Patent number: 4783394Abstract: A color image forming process is described, which comprises developing an imagewise exposed silver halide color photographic material with a color developer containing an aromatic primary amine developing agent and being substantially free of benzyl alcohol for a period of up to about 2 minutes and 30 seconds, wherein the silver halide color photographic material comprises a reflective support having thereon a blue-sensitive silver halide emulsion layer containing a yellow color-forming coupler, a green-sensitive silver halide emulsion layer contaning a magenta color-forming coupler, and a red-sensitive silver halide emulsion layer containing a cyan color-forming coupler in this order, the material further containing light-insensitive hydrophilic colloid layers between the blue-sensitive silver halide emulsion layer and the green-sensitive silver halide emulsion layer and between the green-sensitive silver halide emulsion layer and the red-sensitive silver halide emulsion layer and at least one light-insensitType: GrantFiled: April 10, 1987Date of Patent: November 8, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Takeshi Hirose, Kiyoshi Nakazyo, Hideaki Naruse
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Patent number: 4749643Abstract: Compounds with the structural unit ##STR1## are very valuable UV absorbents, especially in photographic recording materials.Type: GrantFiled: August 21, 1986Date of Patent: June 7, 1988Assignee: Agfa Gevaert AktiengesellschaftInventors: Hans Ohlschlager, Hans Langen, Johannes Sobel
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Patent number: 4741980Abstract: A method for increasing color-fastness of organic coloring matters against light is disclosed. The color-fastness of the organic coloring matter of which absorption maximum is the region from 400 nm to 700 nm is increased by coexisting with a metal complex represented by the following general formula: ##STR1## in which R.sub.1 R.sub.2, R.sub.1 ' and R.sub.2 ' are a hydrogen atom or a substituent, X and X' are O or S, Y is O, S, SO or SO.sub.2 and M is a metal atom.The method adapts to improve the fastness of color images of silver halide photographic materials. In this case, the organic coloring matter is a dyestuff formed by coupling a color forming coupler with an oxidation product of a color developing agent in the silver halide color photographic material or a dyestuff diffused to a receiving layer of the diffusion transfer silver halide color photographic material.Type: GrantFiled: September 18, 1986Date of Patent: May 3, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventor: Yutaka Kaneko
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Patent number: 4728599Abstract: Photographic coupler dispersion addenda comprising phenolic esters of di-, tri- and tetra-carboxybenzene derivatives having bulky ortho substituents are described for incorporation in photographic emulsions and elements. The solvents are preferably employed in the cyan layer to protect the cyan dye against ferrous ion reduction. The solvents also provide improvements in yellow dye stability to light and cyan dye stability to light, heat and humidity.Type: GrantFiled: December 2, 1985Date of Patent: March 1, 1988Assignee: Eastman Kodak CompanyInventor: Sundaram Krishnamurthy
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Patent number: 4692399Abstract: A silver halide photographic light-sensitive material is disclosed, which is excellent in light discoloration resistance and is more particularly capable of keeping its color balance and reproducing long life color images. The photographic material comprises a support, at least three light-sensitive silver halide emulsion layers containing a yellow, magenta, and cyan coupler, respectively, and at least one non-light-sensitive layer being provided at a further side of the emulsion layer being provided at the furthest position from the support. The non-light-sensitive layer contains at least three kinds of UV absorbers represented by the general formula [UV-I], provided that at least one of the UV absorbers is in a liquid state at 30.degree. C. and at least two UV absorbers are in a solid state at the same temperature.Type: GrantFiled: July 1, 1986Date of Patent: September 8, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Takashi Kadowaki, Kaoru Onodera
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Patent number: 4661440Abstract: Photographic material containing magenta coupler is stabilized by incorporating a dibenzoxaphosphorin of the formula ##STR1## into the emulsion layer containing the coupler or into an adjoining colloid layer. The yellowing on dark storage of such material is substantially reduced as a result.The symbols A and n are defined in claim 1.Type: GrantFiled: November 7, 1985Date of Patent: April 28, 1987Assignee: Ciba-Geigy AGInventors: Paul Tschopp, David G. Leppard
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Patent number: 4645735Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support base having positioned thereon a light-sensitive silver halide emulsion layer, a light-insensitive layer and ultraviolet ray absorbing polymer latex of a polymer having a repeating unit derived from a monomer represented by the general formula (I): ##STR1## within general formula (I) the substituents are defined within the specification. The Q represents an ultraviolet ray absorbing group represented by a general formula (II) or (III): ##STR2## The substituents within the general formulae given above are defined in the specification. By including the particular ultraviolet ray absorbing polymer latex of the invention the resulting photographic material has improved antistatic properties and the photographic characteristics of the material are not deteriorated by the presence of the latex.Type: GrantFiled: March 13, 1985Date of Patent: February 24, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Naohiko Sugimoto, Tetsuro Kojima, Shingo Ishimaru
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Patent number: 4614708Abstract: Method for the preparation of stable aqueous dispersions of finely divided solid spherical polymer beads having an average particle size between about 0.5 and about 5 .mu.m and having a glass transition temperature of at least 40.degree. C. by dissolving in an aqueous solvent mixture at least one .alpha.,.beta.-ethylenically unsaturated monomer capable of forming a polymer that is soluble in the monomer(s) present in said aqueous solvent mixture but which is insoluble in said aqueous solvent mixture, a free radical-forming polymerization initiator, and a graft-polymerizable polymer containing hydrophilic groups, heating the solution to a temperature from 50.degree. C. to the reflux temperature thereof with stirring so as to form said polymer beads. The polymer beads can be used in an antifriction surface layer, an antihalation surface layer, an antistatic surface layer, or in a protective surface layer of a photographic element or in a top layer of a drafting film containing a photosensitive layer.Type: GrantFiled: February 16, 1984Date of Patent: September 30, 1986Assignee: AGFA-Gevaert, N.V.Inventors: Daniel M. Timmerman, Jan J. Priem, Jan H. Janssens
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Patent number: 4576908Abstract: 3-Aminoallylidenemalononitrile is useful for absorbing ultraviolet radiation near 400 nm, with no absorption near 420 nm, when directly dispersed in a photographic gelatin layer.Type: GrantFiled: June 8, 1984Date of Patent: March 18, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventor: Angelo Vallarino
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Patent number: 4551420Abstract: A silver halide photographic light-sensitive material is disclosed which is comprised of a support base having thereon a light-sensitive silver halide emulsion layer and a light-insensitive layer. The material also includes an ultraviolet ray absorbing polymer latex and a fine grained silver halide having a diameter of 0.2 microns or less. The ultraviolet ray absorbing polymer latex is a polymer or copolymer having a repeating unit derived from a monomer represented by the general formula (I): ##STR1## the substituents are defined within the specification. By utilizing the polymer latex of general formula (I) the occurance of static marks is almost completely prevented without causing undesirable effects on other film properties.Type: GrantFiled: February 1, 1985Date of Patent: November 5, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Naohiko Sugimoto, Tetsuro Kojima
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Patent number: 4540658Abstract: A silver halide color photographic product with dye images having improved fastness to light is disclosed. The product has at least one dye image forming layer on a support and further includes at least one of the compounds of formula (I) or (II) in said dye image forming layer and/or an adjoining or an adjacent layer: ##STR1## wherein R is an alkyl group, an aryl group or a heterocyclic group; X is an alkylene group; and Y is an alkylene or arylene group; and ##STR2## wherein R.sub.1 is a hydrogen atom, an alkyl group or an aryl group; R.sub.2 and R.sub.3 are each an alkyl group; Y.sub.1 is an alkylene or arylene group; Z is an oxygen atom, a sulfur atom, a sulfonyl group, a carbonyl group or an alkylene group; and n is an integer of 1 to 20.Type: GrantFiled: June 24, 1983Date of Patent: September 10, 1985Assignee: Konishiroku Photo Industry Co. Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4518686Abstract: A color photographic light-sensitive material comprising a reflective support having thereon a plurality of silver halide emulsion layers of which the emulsion layer located farthest from said support has, on each of both the support side thereof and the uppermost side at least one nonlight-sensitive layer containing an effective amount of an ultraviolet absorbing agent, said ultraviolet absorbing agent being used in said nonlight-sensitive layer on the uppermost side of said emulsion layer being a 2-(2'-hydroxyphenyl)benzotriazole-type compound which is in the liquid form at normal room temperature.Type: GrantFiled: June 3, 1983Date of Patent: May 21, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4517283Abstract: A color-photographic recording material which, in at least one light-sensitive silver halide emulsion layer, an interlayer and/or a protective layer, contains a stabilizer mixture comprising(i) a compound with at least one group of the formula ##STR1## or a polymer with recurring structural units of the formula I, and (ii) a phenolic antioxidant.Color images obtained by imagewise exposure and development of this color-photographic recording material show good stability to the action of visible and ultraviolet light.With respect to the definitions of the substituents in formula I, reference is made to the description.Type: GrantFiled: December 15, 1983Date of Patent: May 14, 1985Assignee: Ciba-Geigy AGInventors: David G. Leppard, Jean Rody
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Patent number: 4496650Abstract: A silver halide color photographic light-sensitive material comprised of a support having thereon a silver halide emulsion layer containing a cyan color image forming polymer coupler latex is disclosed. The cyan color image forming polymer coupler latex is comprised of at least one repeating unit capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent represented by the general formula (Ia) and at least one repeating unit represented by the general formula (II): ##STR1## the substituents within the general formulae are disclosed within the specification. The cyan color image forming polymer coupler latex has excellent color forming properties and the silver halide color photographic light-sensitive material which contains the latex provides a photograph in which the occurrence of color stain due to light is substantially prevented. A method of forming a color image using the silver halide color photographic light-sensitive material is also described.Type: GrantFiled: January 17, 1984Date of Patent: January 29, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Tsumoru Hirano, Makoto Umemoto
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Patent number: 4496649Abstract: A color-photographic recording material which, in at least one light-sensitive silver halide emulsion layer, an interlayer and/or a protective layer, contains at least one polyalkylpiperidine compound of the formula I ##STR1## in which R is an OH group and R.sub.1 is a group of the formula II ##STR2## or of the formula ##STR3## and X is a group of the formula ##STR4## or of the formula ##STR5## Color images obtained by imagewise exposure and development of this color-photographic recording material show good stability to the action of visible and ultraviolet light.With respect to the definitions of the substituents and symbols in the formulae, reference is made to the description.Type: GrantFiled: December 15, 1983Date of Patent: January 29, 1985Assignee: Ciba-Geigy AGInventors: David G. Leppard, Jean Rody
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Patent number: 4455368Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion and at least one light-insensitive layer is disclosed. One or more of the layers of the material contains an ultraviolet ray absorbing polymer latex which comprises a homopolymer or copolymer having a repeating unit derived from a monomer represented by the general formula (II) in which one or more ultraviolet ray absorbing compounds represented by the general formula (I) is loaded: ##STR1## the substituents within the general formula are defined within the specification. The material has excellent absorption characteristics in the 300 to 400 nm range and does not cause static marks caused by ultraviolet rays or undergo deterioration of color reproduction. In addition, the material has good film strength and reduced layer thickness and provides a color image having improved sharpness which is free from fading or discoloration due to light.Type: GrantFiled: April 14, 1983Date of Patent: June 19, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Tetsuro Kojima, Shingo Ishimaru, Naohiko Sugimoto, Tadashi Ikeda
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Patent number: 4447511Abstract: 2-[2-Hydroxy-3,5-di-tert-octylphenyl]-2H-benzotriazole exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions.This stabilizer and its 5-chloro analog exhibit great resistance to volatilization, enhanced solubility in selected solvents, desirable absorption characteristics in the ultraviolet range and photographic inertness. This combination of properties makes these benzotriazoles particularly useful in photographic compositions especially in protecting color dye images against the harmful effects of ultraviolet light.Type: GrantFiled: January 10, 1983Date of Patent: May 8, 1984Assignee: Ciba-Geigy CorporationInventors: Martin Dexter, Roland A. E. Winter
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Patent number: 4443534Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support having thereon a light-sensitive silver halide layer and a light-insensitive layer. The material may also contain other layers and one or more layers contains an ultraviolet ray absorbing polymer latex. The polymer latex is comprised of a homopolymer or a copolymer having a repeating unit derived from a monomer represented by the following general formula (I): ##STR1## within the general formula (I) the Q represents an ultraviolet ray absorbing group represented by the general formula (II): ##STR2## the substituents within the general formulae (I) and (II) are defined in a specification. The photographic light-sensitive material has excellent absorbing characteristic in the 300 to 400 nm range and does not cause static marks caused by ultraviolet layer. Furthermore, the material does not undergo discoloration.Type: GrantFiled: April 12, 1983Date of Patent: April 17, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Tetsuro Kojima, Shingo Ishimaru, Naohiko Sugimoto, Tadashi Ikeda
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Patent number: 4435489Abstract: Hydrazone derivatives of the formula ##STR1## in which A.sub.1 is an aromatic radical, B.sub.1 is hydrogen, alkyl, cycloalkyl, aralkyl or aryl, R.sub.1, R.sub.2 and R.sub.3 independently of one another are alkyl, cycloalkyl, aralkyl or polyoxyalkylene, Z.sub.1 is arylene, X.sup..crclbar. is an anion and m is 0, 1, 2 or 3.The hydrazone derivatives are suitable as UV absorbers, especially in polymer coatings.Type: GrantFiled: September 22, 1982Date of Patent: March 6, 1984Assignee: Ciba-Geigy AGInventors: Beat Muller, Martin Roth
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Patent number: 4407932Abstract: Method of preparing a fade-resistant and abrasion-resistant colored photographic image and a novel color photographic paper therefor. A photograph on the paper is coated with adhesive, bonded to a substrate and the paper backing stripped away, leaving a low density polyethylene foil covering the reversed image.Type: GrantFiled: January 4, 1982Date of Patent: October 4, 1983Assignee: Minnesota Mining & Manufacturing Co.Inventors: Harry A. Loder, Charles A. Mathna