Patents Examined by Thomas R. Neville
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Patent number: 5364748Abstract: There is disclosed a silver halide color photo-graphic light-sensitive material capable of providing a dye image having excellent color reproducibility, sharpness and image fastness. The light-sensitive material comprises a support having provided thereon a photographic constituent layer comprising 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 non-light-sensitive hydrophilic colloid layers.Type: GrantFiled: July 8, 1993Date of Patent: November 15, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroyuki Yoneyama
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Patent number: 5362613Abstract: A cationic high-molecular weight compound is represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom or C.sub.1-6 lower alkyl group; L.sup.1 represents --COO-- or --CONH-- and L.sup.2 represents a divalent group; J represents a C.sub.1-20 alkylene group or C.sub.7-20 aralkylene group; R.sup.3, R.sup.4 and R.sup.5 may be the same or different and each represents a C.sub.1-20 alkyl group or C.sub.7-20 aralkyl group; X.sup.Type: GrantFiled: January 15, 1993Date of Patent: November 8, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Kentaro Shiratsuchi, Fumio Kawamoto
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Patent number: 5362626Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support and having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer contains a gelatin comprising an iron ion of 0.5 ppm to 5 ppm and .alpha.-constituent having weight-average molecular weight of 80,000 to 120,000 in an amount of not less than 40% by weight of the gelatin.Type: GrantFiled: September 29, 1993Date of Patent: November 8, 1994Assignee: Konica CorporationInventors: Takaaki Kojima, Mitsuhiro Okumura, Takahiko Nojima
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Patent number: 5360702Abstract: Melt crystallization of a photographic composition containing dispersed particles of a filter dye and dispersed particles of oxidized developer scavenger, in particular a hydrazide or a disulfonamidophenol oxidized developer scavenger, is inhibited by dispersing the oxidized developer scavenger in the composition in the form of particles comprising the oxidized developer scavenger dispersed or dissolved in an organic solvent selected such that the following relationship is satisfied:6.65+10.0 A-1.53 B+0.11 B.sup.2 -0.99 AB<4.0wherein A is the weight ratio of organic solvent to oxidized developer scavenger; and B is the log P of the organic solvent.Type: GrantFiled: January 26, 1993Date of Patent: November 1, 1994Assignee: Eastman Kodak CompanyInventors: Paul L. Zengerle, Glenn M. Brown, John B. Rieger
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Patent number: 5360708Abstract: A silver halide photographic light-sensitive material comprises a polyester film support having curling in the lateral direction, a first side of the support being curled outwardly and a second side of the support being curled inwardly, a silver halide emulsion layer provided on the first side of the support, and a backing layer provided on the second side of the support, the ratio of the total gelatin content per unit area of the backing layer to that of the silver halide emulsion layer being within the range of from 0.05 to 0.7.Type: GrantFiled: September 30, 1993Date of Patent: November 1, 1994Assignee: Konica CorporationInventors: Masahito Takada, Eiichi Ueda, Hiromitsu Araki, Toru Kobayashi
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Patent number: 5358808Abstract: An exposure mask for lithography, a method of manufacturing the same, and an exposure method using the same are disclosed. A light-transmitting opening of the exposure mask has a main light-transmitting region located in the middle of the opening and having a first optical path length, and phase shift regions adjacent to a light-shielding layer and having a second optical path length, different from the first optical path length. Light transmitted through each phase shift region interferes with light transmitted through the main light-transmitting region at the edges of the light-transmitting opening, thus enabling a sharp photo-intensity distribution of total transmitted light to be obtained. As a result, the resolution of the exposure mask is improved.Type: GrantFiled: July 21, 1993Date of Patent: October 25, 1994Assignee: Kabushiki Kaisha ToshibaInventors: Akihiro Nitayama, Makoto Nakase, Kouji Hishimoto, Hirotsugu Wada
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Patent number: 5354648Abstract: A radiographic assembly comprising:a radiographic element which comprises a support and a front and back pair of silver halide emulsion layers coated on the opposite sides of the support, anda front and back pair of intensifying screens adjacent said front and back emulsion layers, respectively,wherein at least one of said silver halide emulsion layers shows a swelling index lower than 140% and a melting time of from 45 to 120 minutes, and the contrast difference between said pair of silver halide emulsion layers is at least 0.5,wherein the X-ray stimulated light emission difference between said pair of intensifying screens is at least 0.6 IogE, andwherein the average imagewise cross-over of said radiographic element is lower than 5% at optical density of from 0.5 to 1.75 and in the range of from 5 to 15% at optical density of from 1.75 to 3.25, said imagewise cross-over being measured according to the formula described in the specificaton.Type: GrantFiled: June 7, 1993Date of Patent: October 11, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Marco Bucci, Renzo Torterolo, Pierfiore Malfatto, Marco Beruto
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Patent number: 5352563Abstract: A silver halide photographic light-sensitive material is disclosed, which comprises a support and provided thereon, a silver halide photographic emulsion layer and a protective layer in that order, wherein at least one layer of said emulsion layer and said protective layer contains a cyclodextrin compound and said emulsion layer contains a hydrazine derivative or a compound represented by the following formula (T): ##STR1##Type: GrantFiled: January 19, 1993Date of Patent: October 4, 1994Assignee: Konica CorporationInventors: Satomi Kawasaki, Shyouji Nishio, Hideki Komatsu
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Patent number: 5352569Abstract: A silver halide color photographic material comprising a support having thereon a cyan color-forming silver halide emulsion layer, a magenta color-forming silver halide emulsion layer, a yellow color-forming silver halide emulsion layer and at least one light-insensitive hydrophilic layer disposed farther from the support than any of these silver halide emulsion layers, in which the light-insensitive hydrophilic layer contains nonglobular fine-particle powder in a dispersion in an amount of at least 25% by weight based on the whole components therein, thereby ensuring excellent tone reproduction in the images and reduced dependence of image qualities upon the positions of viewing light sources. In addition, the color photographic material can provide images well-expressing a feeling of massiveness even in rapid photographic processing.Type: GrantFiled: August 23, 1993Date of Patent: October 4, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Kiyohito Takada
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Patent number: 5344749Abstract: The synthesis and the application of new dyes is described, said new dyes being incorporated in non-migratory state in hydrophilic colloid layers of photographic materials wherefrom they can be rapidly removed after being quickly decolorized in alkaline aqueous liquids used in the processing of said materials. The filter dyes have an amide function or a derivative therefrom as a substituent at the mono- or trimethine chain.Type: GrantFiled: September 10, 1993Date of Patent: September 6, 1994Assignee: AGFA-Gevaert, N.R.Inventors: Eric Kiekens, Paul Callant
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Patent number: 5342732Abstract: A photosensitive photographic silver halide material comprising a support bearing a layer of a silver halide emulsion comprising at least 50% silver chloride which contains in or adjacent the emulsion layer a hydrazide nucleating agent and an amine booster, the combination of which is capable of providing high contrast images, which emulsion is sensitised with a dye of the general formula: ##STR1## wherein each of R.sup.1 and R.sup.2 are individually hydrogen, or halogen atom or an alkyl group of 1-4 carbon atoms, a sulfoalkyl, a trifluoromethyl, or cyano group, R.sup.3 is an alkyl or substituted alkyl group, R.sup.4 is a sulfoalkyl group, and R.sup.5 and R.sup.6 are individually an alkyl or substituted alkyl group, andwherein there is the necessary counter-ion.Type: GrantFiled: October 13, 1992Date of Patent: August 30, 1994Assignee: Eastman Kodak CompanyInventors: Philip J. Coldrick, Julia Pich
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Patent number: 5342733Abstract: A silver halide photographic material has provided on a support a non-light-sensitive surface layer which contains an organic polymer represented by formula (I) and having a mean grain size of 1.0 .mu.m or more, the polymer being produced by suspension polymerization: ##STR1## wherein A is a repeating unit obtained by polymerization of at least one monomer having two or more copolymerizable ethylenic unsaturated groups; B is a repeating unit obtained by polymerization of at least one monomer having one copolymerizable ethylenic unsaturated group; and x, y and z each represents a weight percentage, x is a number of from 1 to 40, y is a number of from 30 to 99 and z is a number of from 0 to 65. The material has good vacuum contact adhesiveness in contact exposures, and the transparency of the processed material is good.Type: GrantFiled: April 23, 1993Date of Patent: August 30, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Satoshi Kanetake, Tomokazu Yasuda, Yuzou Muramatsu, Takashi Naoi
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Patent number: 5342744Abstract: A photographic material including a hydrophilic colloid layer containing a dispersion of dye is disclosed. The dye colors a specific layer in the photographic material without diffusing to other layers during storage, yet is quickly decolored or eluted during development processing.Type: GrantFiled: September 22, 1993Date of Patent: August 30, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Koji Wariishi
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Patent number: 5340695Abstract: Disclosed is a silver halide photograhic material which includes a support and at least one emulsion layer. The material also contains a hydrazine derivative and 8-hydroxyguinoline or a derivative thereof. The emulsion may have been subjected to selenium and/or tellurium sensitization.Type: GrantFiled: August 12, 1993Date of Patent: August 23, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Tetsuo Yamaguchi
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Patent number: 5340694Abstract: A silver halide photographic material contains at least one hydrazine compound of formula (I): ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents an alkyl group, an aryl group or a heterocyclic group; and R.sub.1 and R.sub.2, R.sub.3 and R.sub.4, R.sub.1 and R.sub.3, and R.sub.2 and R.sub.4 each may be bonded to each other to form a non-aromatic ring; provided that the carbon atom of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which is directly bonded to a nitrogen atom of the hydrazine core of the compound is not substituted by an oxo group. The material has a high sensitivity and does not tend to fog. After storage, depression of the sensitivity of the material is small.Type: GrantFiled: February 2, 1993Date of Patent: August 23, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Takanori Hioki, Ryoji Nishimura
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Patent number: 5340704Abstract: Disclosed is a photographic image forming method. A silver halide photographic material is processed with a developing solution having a pH of 9.6 to 11.0. The silver halide photographic material has at least one light-sensitive layer containing a chemically-sensitized silver halide emulsion comprising silver halide grains having a silver chloride content of at least 60 mol %. At least one of said at least one light-sensitive layer and a light-insensitive hydrophilic colloid layer contains a hydrazine compound represented by the formula (1):R.sup.1 --NHNH--G--R.sup.2 (1).The variables in the formula are defined in the specification.Type: GrantFiled: July 6, 1993Date of Patent: August 23, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshihide Ezoe, Kazumi Nii, Hisashi Okamura
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Patent number: 5338650Abstract: A silver halide color photographic light-sensitive material is provided, which comprises a transparent support having on one side thereof photographic component layers comprising a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer and which is in the form of a 35+1 mm-wide roll film having perforations, wherein a total area of the perforations accounts for 0.6 to 6.0% of the entire area of the silver halide color photographic material.Type: GrantFiled: February 17, 1993Date of Patent: August 16, 1994Assignee: Konica CorporationInventor: Masaru Iwagaki
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Patent number: 5330886Abstract: A color photographic recording material having a support, at least one light-sensitive silver halide emulsion layer containing a pyrazoloazole magenta coupler, at least one other layer which is arranged closer to the source of light and at least one other layer arranged further away from the source of light than the silver halide emulsion layer containing the pyrazoloazole magenta coupler, these other layers containing gelatine and a randomly or alternatingly structured copolymer of vinyl alcohol and an unsaturated carboxylic acid or a graft polymer of vinyl acetate on polyalkylene oxide followed by saponification of the acetate groups is distinguished by improved stability to light of the magenta dye obtained after processing.Type: GrantFiled: January 27, 1993Date of Patent: July 19, 1994Assignee: AGFA-Gevaert AGInventors: Gunter Helling, Gunter Renner
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Patent number: 5328801Abstract: A method for forming an image is disclosed, which comprises processing with a developer having a pH value of 9 to 12 and comprising 0.2 mol/liter or more of a sulfite an imagewise exposed silver halide photographic material comprising a compound represented by formula (I): ##STR1## wherein Het represents a group represented by formula (II) and the remaining terms are as defined in the specification: ##STR2## wherein the terms are as defined in the specification. In a preferred embodiment, the compound represented by formula (I) is a compound represented by formula (III): ##STR3## wherein the terms are as defined in the specification. The light-sensitive material may comprise a hydrazine derivative in addition to the compound represented by formula (I) or (III).Type: GrantFiled: March 6, 1992Date of Patent: July 12, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Shoji Yasuda, Kazunobu Katoh, Hisashi Okamura
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Patent number: 5326689Abstract: A photographic material which exhibits excellent dynamic properties and little curl is provided. The silver halide photographic material comprises at least one light-sensitive layer on a polyester support, wherein the polyester support is a polyester support having a glass transition temperature of 90.degree. C. to 200 .degree. C. and is subject to glow discharge treatment. The polyester support is preferably subjected to post heat treatment at a temperature ranging from 50 .degree. C. to lower than the glass transition temperature of said polyester support after the glow discharge treatment.Type: GrantFiled: August 18, 1993Date of Patent: July 5, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Masahiko Murayama