Patents Examined by Thomas R. Neville
  • Patent number: 5364748
    Abstract: 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: Grant
    Filed: July 8, 1993
    Date of Patent: November 15, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroyuki Yoneyama
  • Patent number: 5362613
    Abstract: 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: Grant
    Filed: January 15, 1993
    Date of Patent: November 8, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kentaro Shiratsuchi, Fumio Kawamoto
  • Patent number: 5362626
    Abstract: 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: Grant
    Filed: September 29, 1993
    Date of Patent: November 8, 1994
    Assignee: Konica Corporation
    Inventors: Takaaki Kojima, Mitsuhiro Okumura, Takahiko Nojima
  • Patent number: 5360702
    Abstract: 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: Grant
    Filed: January 26, 1993
    Date of Patent: November 1, 1994
    Assignee: Eastman Kodak Company
    Inventors: Paul L. Zengerle, Glenn M. Brown, John B. Rieger
  • Patent number: 5360708
    Abstract: 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: Grant
    Filed: September 30, 1993
    Date of Patent: November 1, 1994
    Assignee: Konica Corporation
    Inventors: Masahito Takada, Eiichi Ueda, Hiromitsu Araki, Toru Kobayashi
  • Patent number: 5358808
    Abstract: 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: Grant
    Filed: July 21, 1993
    Date of Patent: October 25, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akihiro Nitayama, Makoto Nakase, Kouji Hishimoto, Hirotsugu Wada
  • Patent number: 5354648
    Abstract: 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: Grant
    Filed: June 7, 1993
    Date of Patent: October 11, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Marco Bucci, Renzo Torterolo, Pierfiore Malfatto, Marco Beruto
  • Patent number: 5352563
    Abstract: 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: Grant
    Filed: January 19, 1993
    Date of Patent: October 4, 1994
    Assignee: Konica Corporation
    Inventors: Satomi Kawasaki, Shyouji Nishio, Hideki Komatsu
  • Patent number: 5352569
    Abstract: 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: Grant
    Filed: August 23, 1993
    Date of Patent: October 4, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kiyohito Takada
  • Patent number: 5344749
    Abstract: 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: Grant
    Filed: September 10, 1993
    Date of Patent: September 6, 1994
    Assignee: AGFA-Gevaert, N.R.
    Inventors: Eric Kiekens, Paul Callant
  • Patent number: 5342732
    Abstract: 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: Grant
    Filed: October 13, 1992
    Date of Patent: August 30, 1994
    Assignee: Eastman Kodak Company
    Inventors: Philip J. Coldrick, Julia Pich
  • Patent number: 5342733
    Abstract: 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: Grant
    Filed: April 23, 1993
    Date of Patent: August 30, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Satoshi Kanetake, Tomokazu Yasuda, Yuzou Muramatsu, Takashi Naoi
  • Patent number: 5342744
    Abstract: 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: Grant
    Filed: September 22, 1993
    Date of Patent: August 30, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Koji Wariishi
  • Patent number: 5340695
    Abstract: 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: Grant
    Filed: August 12, 1993
    Date of Patent: August 23, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tetsuo Yamaguchi
  • Patent number: 5340694
    Abstract: 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: Grant
    Filed: February 2, 1993
    Date of Patent: August 23, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takanori Hioki, Ryoji Nishimura
  • Patent number: 5340704
    Abstract: 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: Grant
    Filed: July 6, 1993
    Date of Patent: August 23, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshihide Ezoe, Kazumi Nii, Hisashi Okamura
  • Patent number: 5338650
    Abstract: 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: Grant
    Filed: February 17, 1993
    Date of Patent: August 16, 1994
    Assignee: Konica Corporation
    Inventor: Masaru Iwagaki
  • Patent number: 5330886
    Abstract: 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: Grant
    Filed: January 27, 1993
    Date of Patent: July 19, 1994
    Assignee: AGFA-Gevaert AG
    Inventors: Gunter Helling, Gunter Renner
  • Patent number: 5328801
    Abstract: 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: Grant
    Filed: March 6, 1992
    Date of Patent: July 12, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shoji Yasuda, Kazunobu Katoh, Hisashi Okamura
  • Patent number: 5326689
    Abstract: 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: Grant
    Filed: August 18, 1993
    Date of Patent: July 5, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Masahiko Murayama