Patents by Inventor Kaoru Onodera
Kaoru Onodera has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4910127Abstract: A silver halide color photographic light-sensitive material is disclosed, which has excellent rapid processability and is remarkably improved in spectral absorption characteristics and fastness against light of magnet images. The photographic material comprising a support bearing at least one silver halide emulsion layer thereon, and the silver halide emulsion layer containssilver halide grains each containing silver chloride in an amount of not less than 80 mol %, andat least one couplers selected from the group consisting of the couplers represented by the following General Formulas (a), (b) and (c), respectively, or a polymer coupler comprising said coupler, and an anti-discoloring agent, each dispersed in the silver halide emulsion layer by making use of a high boiling organic solvent, provided that a proportion of said high boiling organic solvent to said coupler is not less than 0.6 by weight.Type: GrantFiled: October 28, 1988Date of Patent: March 20, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sakaki, Kaoru Onodera
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Patent number: 4906559Abstract: There is disclosed a light-sensitive silver halide photographic material which comprises a magenta coupler represented by the formula (I), a compound represented by the formula (XI), and further at least one compound selected from the group consisting of the compounds represented by the formulae (XII), (XIII) and (XIV): ##STR1## wherein Z, X and R have the same meanings as defined in the specification, ##STR2## wherein R.sub.21 to R.sub.25, A and X have the same meanings as defined in the specification, ##STR3## wherein R.sub.26 to R.sub.45 and J have the same meanings as defined in the specification.Type: GrantFiled: July 21, 1989Date of Patent: March 6, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toyoki Nishijima, Kaoru Onodera
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Patent number: 4906554Abstract: This invention relates to a color developing solution for processing of a light-sensitive silver halide color photographic material which comprises containing a compound represented by the following formula [I] and at least one compound selected from a compound represented by the following formula [II] and a compound represented by the following formula [III], and a processing method of a light-sensitive silver halide color photographic material, which comprises, after imagewise exposure of a light-sensitive silver halide color photographic material, carrying out processing including at least a color developing step, wherein the light-sensitive silver halide color photographic material has silver halide emulsion layers containing silver halide grains substantially comprised of silver chloride, and a color developing solution used in the color developing step contains the compound represented by the following formula [I] and at least one compound selected from the compound represented by the following formulaType: GrantFiled: December 11, 1987Date of Patent: March 6, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Ishikawa, Shigeharu Koboshi, Kazuhiro Kobayashi, Keiji Ohbayashi, Mitsuhiro Okumura, Shigeo Chino, Kaoru Onodera
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Patent number: 4897342Abstract: In a method of preparing a light-sensitive silver halide photographic emulsion, silver salt and halide are mixed in the presence of an iridium compound. The emulsion is then chemically ripened by an instable sulfur compound and a nitrogen-containing heterocyclic compound capable of forming a complex with silver.Type: GrantFiled: April 14, 1989Date of Patent: January 30, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Makoto Kajiwara, Masanobu Miyoshi, Kaoru Onodera
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Patent number: 4863840Abstract: A silver halide color photographic light-sensitive material is disclosed, which is satifactory in the overall discoloration color balance of a dye image composed of yellow, magenta and cyan dyes in the light discoloration as well as in the dark discoloration and produces little or no yellow color stain when stored being exposed to a light or in the dark over an extensive period of time and which is excellent in the quality of the dye image even when stored over an extensive period of time.The color photographic material comprises a silver halide emulsion layers containing a specific yellow dye-forming coupler, a silver halide emulsion layer containing a specific magenta dye-forming coupler and a silver halide emulsion layer containing two kinds of specific cyan dye-forming couplers, and the respective emulsion layers each contain high-boiling organic solvent having a dielectric constant of not more than 6.0.Type: GrantFiled: January 13, 1987Date of Patent: September 5, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kazuo Komorita, Kaoru Onodera
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Patent number: 4863842Abstract: A silver halide photographic light sensitive material, which contains at least one magenta dye image forming coupler expressed by the following general formula [I], at least one piperazine or homopiperazine compound expressed by the following general formula [XIIIa], at least one compound selected from a coumarane or a chroman compounds expressed by general formula [XIIIa] and hydroxyindane compounds expressed by [XIIIb], below, is described as being stable to light and moisture, and featuring an excellent color reproducibility. ##STR1## The effect of the invention is further improved by additionally employing a metallic compound wherein an optical quenching rate of singlet oxygen is more than 3.times.10.sup.7 M.sup.-1 .multidot.sec.sup.-1.Type: GrantFiled: August 9, 1988Date of Patent: September 5, 1989Assignee: Konica Technosearch CorporationInventors: Yutaka Kaneko, Kenzi Kadokura, Toyoki Nishijima, Kaoru Onodera
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Patent number: 4839263Abstract: A silver halide photographic material containing a support and, provided thereon, at least one silver halide emulsion layer, this silver halide emulsion layer containing silver halide grains containing 90 mol % or more of silver chloride, a dye-forming coupler, and a compound represented by general formula [S]; ##STR1## wherein Q is a group of atoms necessary to complete a 5- or 6-membered heterocyclic ring or a 5- or 6-membered ring fused with a benzene ring and M is a hydrogen atom, an alkali metal or an ammonium group;the silver halide layer having been hardened by a hardener represented by formula [HDA] or [HDB]; ##STR2## wherein Rd.sub.Type: GrantFiled: July 29, 1987Date of Patent: June 13, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masanobu Miyoshi, Makoto Kajiwara, Kaoru Onodera, Eiichi Sakamoto
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Patent number: 4837143Abstract: A silver halide photographic light-sensitive material comprising a support bearing at least one silver halide emulsion layer is disclosed. The silver halide emulsion layer contains silver halide grains comprising not less than 80 mol% of silver chloride and a water soluble iridium compound in an amount of from 10.sup.-8 to 10.sup.-5 mol per mol of a silver halide contained in the emulsion layer. And the emulsion layer is hardened with a hardner represented by General Formula [I] or [II]. ##STR1## The photographic material has an excellent antipressure property and suitable for a rapid processing.Type: GrantFiled: December 29, 1988Date of Patent: June 6, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kazuo Komorita, Kaoru Onodera
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Patent number: 4830955Abstract: The present invention relates to a silver halide photographic light-sensitive material comprising a support, at least one silver halide emulsion layer containing silver halide crystals, the silver chloride content of which being not less than 80 mol %, at least one compound which is represented by general formula [I], of which acid dissociation constant (Ka) and the solubility product (Ksp) with silver ion are not more than 1.times.10.sup.-8 and not more than 1.times.10.sup.-10, respectively; ##STR1## (wherein Z represents a group of atoms necessary to complete a heterocyclic ring) and at least one azaindene compound having at least one hydroxyl group.Type: GrantFiled: April 21, 1987Date of Patent: May 16, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Makoto Kajiwara, Kaoru Onodera
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Patent number: 4828969Abstract: A silver halide photographic light-sensitive material having, upon a substrate, a blue-sensitive silver halide emulsion layer, a green-sensitive emulsion layer and a red-sensitive emulsion layer. The silver halide grains contained in the blue-sensitive emulsion layer is optically sensitized for maximum spectral sensitivity in the wavelength region of 450 to 500 nm, and at least one emulsion layer other than the blue-sensitive layer contains a magenta coupler represented by the following formula, the substituents of which are defined within the Specification. ##STR1## Photographic materials thus formed have both an increased blue and green sensitivity.Type: GrantFiled: August 24, 1987Date of Patent: May 9, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shun Takada, Kaoru Onodera
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Patent number: 4820614Abstract: A silver halide photographic light sensitive material improved in suitability for rapid processing and in color forming efficiency, spectral absorption property and fastness of the cyan image is disclosed.Type: GrantFiled: November 17, 1987Date of Patent: April 11, 1989Assignee: Konica CorporationInventors: Shun Takada, Kazuhiro Murai, Kaoru Onodera
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Patent number: 4797350Abstract: A process for forming a dye image is disclosed, in which a silver halide photographic light-sensitive material having a silver halide emulsion layer is developed by a color developer comprising an aromatic primary amine and an N,N- dialkylhydroxylamine. The silver halide emulsion layer contains a hydrophobic dye-forming coupler and a compound selected from the group consisting of compounds having a sterically hindered phenol group and polyalkylpiperidine compounds or the water soluble acid salt thereof. The dye image having a high maximum density and a high light-fastness can be obtained when the color developer without benzyl alcohol is used.Type: GrantFiled: April 6, 1987Date of Patent: January 10, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Keiji Ohbayashi, Shigeo Chino, Mitsuhiro Okumura, Kaoru Onodera
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Patent number: 4795696Abstract: Disclosed is a light-sensitive silver halide photographic material, comprising a plural number of photographic constituent layers on a support, wherein at least one of the layers is a silver halide emulsion layer containing a magenta coupler represented by Formula (I) shown below, and at least one of the photographic constituent layers excluding at least the above silver halide emulsion layer contains at least one of the compounds represented by Formula (a) and Formula (b) shown below:Formula (I): ##STR1## Formula (a) ##STR2## Formula (b) ##STR3## The light-sensitive silver halide photographic material according to this invention have excellent color reproducibility, and is remarkably improved in both the fastness to light of magenta dye images and the resistance to the yellowing thereof to be generated by light (light stain).Type: GrantFiled: April 19, 1988Date of Patent: January 3, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4790959Abstract: A dispersion of oil globules which contains an ultra-violet absorber and a high-boiling solvent is disclosed. The UV absorber is a mixture of 15 to 45 wt % of a compound of formula (I) and 85 to 55 wt % of a compound of formula (II): ##STR1## (wherein R.sub.1 and R.sub.2 each represents an alkyl group having 1 to 4 carbon atoms; X is a hydrogen atom, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group or an aryl group); ##STR2## (wherein R.sub.3 and R.sub.4 each represents an alkyl group, provided that the total number of carbon atoms in the alkyl groups represented by R.sub.3 and R.sub.4 is 9 or more; Y is a hydrogen atom, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group or an aryl group).Type: GrantFiled: January 12, 1987Date of Patent: December 13, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera, Hideki Inahata
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Patent number: 4784938Abstract: A silver halide photographic light-sensitive material which is improved on fog without decreasing photosensitivity. The photographic material comprises a support and a photographic structural layer provided thereon containing at least one silver halide emulsion layer and at least one non-light-sensitive layer. A nitrogen-containing heterocyclic mercapto compound is contained at least two layers of the photographic structure layer, and at least one of these mercapto compound-containing layer is a non-light-sensitive layer.Type: GrantFiled: October 17, 1986Date of Patent: November 15, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Keiji Obhayashi, Shinichi Nakamura, Shigeo Tanaka, Mitsuhiro Okumura, Masanobu Miyoshi, Makoto Kajiwara, Kaoru Onodera, Eiichi Sakamoto
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Patent number: 4770985Abstract: A silver halide photographic material is disclosed which has formed on a support in sequence a silver halide emulsion layer incorporating a yellow coupler of the formula (I), a silver halide emulsion layer incorporating a magenta coupler of the formula (II), and a silver halide emulsion layer incorporating a cyan coupler of the formula (III): ##STR1## wherein R.sub.1 is a hydrogen atom, a halogen atom or an alkoxy group; R.sub.2 is --NHCOR.sub.3, --NHSO.sub.2 R.sub.3, --COOR.sub.3 or ##STR2## provided that R.sub.3 and R.sub.4 are each an alkyl group; and Z.sub.1 is a non-metallic atomic group necessary to form a 5- or 6-membered hetero ring together with a nitrogen atom); ##STR3## [wherein R.sub.5 is a hydrogen atom, a halogen atom or an alkoxy group having 1 to 4 carbon atoms; R.sub.6 is (provided that R.sub.7 and R.sub.8 are each a hydrogen atom or an acyl group, and when R.sub.7 and R.sub.Type: GrantFiled: October 26, 1987Date of Patent: September 13, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shun Takada, Takashi Kadowaki, Masao Sasaki, Toyoki Nishijima, Kaoru Onodera
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Patent number: 4753870Abstract: A light-sensitive silver halide photographic material having a support and at least one silver halide emulsion layer on the support. At least one layer of the silver halide emulsion layer contains a compound of the Formula I ##STR1## wherein Z represents a group of non-metallic atoms necessary to complete a nitrogen-containing heterocyclic ring which may have a substituent; X represents a hydrogen atom or a substituent capable of being split off upon reaction with an oxidation product of a color developing agent; and R represents a hydrogen atom or a substituent; and a compound represented by formula 1R.sup.1 (O).sub.n SO.sub.3 Mwherein R.sup.1 represents an alkyl group; M represents a hydrogen atom or a cation and n is 0 or 1.Type: GrantFiled: January 28, 1987Date of Patent: June 28, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shun Takada, Toyoki Nishijima, Kaoru Onodera
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Patent number: 4752561Abstract: There is disclosed a light-sensitive silver halide photographic material having a silver halide emulsion layer containing a coupler on a support, comprising at least one of the metal complexes having a quenching constant of singlet oxygen of 3.times.10.sup.7 M.sup.-1.sec.sup.-1 or higher and at least one of oil-soluble dyes, and which may further comprise at least one of the magenta couplers represented by the formula (I) shown below: ##STR1## wherein Z represents a group of non-metal atoms necessary for formation of a nitrogen-containing heterocyclic ring, and the ring formed by the Z may have substituents; X represents a hydrogen atom or a substituent eliminable through the reaction with the oxidized product of a color developing agent; and R represents a hydrogen atom or a substituent.Type: GrantFiled: May 9, 1986Date of Patent: June 21, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toyoki Nishijima, Kaoru Onodera
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Patent number: 4734358Abstract: A silver halide photographic light-sensitive material which is excellent in raw-stock preservability, physical characteristics of its layers such as glossiness, scratch resistance, and degree of swelling and whose sensitivity changes very little with time after manufacture comprising a compound represented by Formula [I] of the specification, hardened with at least one of the compounds represented by Formula [II] or [III] of the specification. The storage stability is further improved when at least one of the cyan couplers represented by Formula [IX] or [X] of the specification is present.Type: GrantFiled: November 25, 1986Date of Patent: March 29, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shun Takada, Masanobu Miyoshi, Kaoru Onodera
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Patent number: 4731320Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a support is disclosed wherein at least one of said silver halide emulsion layers contains at least one cyan coupler of formula (I) dispersed therein with the aid of a high-boiling organic solvent having a dielectric constant of not more than 6.0: ##STR1## (wherein R.sub.1 is a straight- or branched-chain alkyl group having 2 or 4 carbon atoms; X is a hydrogen atom or a group capable of leaving upon coupling reaction; and R.sub.2 is a ballast group).Type: GrantFiled: August 13, 1986Date of Patent: March 15, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Toyoki Nishijima, Shun Takada, Takashi Kadowaki, Kaoru Onodera