Patents by Inventor Morio Yagihara
Morio Yagihara 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: 4518685Abstract: A silver halide photographic light-sensitive material which comprises a support having thereon a light-sensitive silver halide emulsion layer, wherein the photographic light-sensitive material contains a blocked photographic agent therein represented by formula (I): ##STR1## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom or a group which is bonded to a blocking moiety through a hetero atom and capable of releasing a photographic agent upon a subsequent reaction after the group is released; Y represents a hydrogen atom or a substituent; and Z represents an atomic group necessary to form a carbocyclic ring or a heterocyclic ring.The precursor of photographic agent is completely stable during the preservation of the photographic light-sensitive material and releases a photographic agent at a desired time upon the processing of the photographic light-sensitive material.Type: GrantFiled: April 17, 1984Date of Patent: May 21, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Akihiko Ikegawa, Mitsunori Ono, Yuji Mihara
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Patent number: 4511647Abstract: A silver halide color photographic light-sensitive material is disclosed. Their material is comprised of a support having thereon a silver halide emulsion layer containing a cyan color image forming polymer coupler latex. This latex is comprised of a recurring unit of a cyan coupler monomer capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent represented by the general formula (I) and a recurring unit of an ethylenically unsaturated monomer containing an acid component represented by the general formula (II) and a recurring unit of methyl acrylate. ##STR1## The cyan color image forming polymer coupler latex has excellent color forming properties and photographic material containing the coupler latex provides a cyan image having good fastness to heat and the combination of heat and humidity. A method for forming a color image utilizing the disclosed photographic material containing the novel couple of latex is also disclosed.Type: GrantFiled: November 9, 1983Date of Patent: April 16, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsumoru Hirano, Morio Yagihara, Makoto Umemoto
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Patent number: 4500634Abstract: A silver halide color photographic material in which both a coupler capable of releasing a diffusible development restrainer by coupling and a polymer coupler latex are present to increase visual sharpness.Type: GrantFiled: August 24, 1983Date of Patent: February 19, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Kei Sakanoue, Morio Yagihara, Seigi Ichijima, Kimitoshi Nagao
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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: 4495272Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a cyan color image forming polymer coupler latex capable of forming a dye upon coupling with an oxidation product of an artomatic primary amine developing agent wherein the cyan color image forming polymer coupler latex contains at least one repeating unit represented by the general formula (I) described below and at least one repeating unit represented by the general formula (II) described below. ##STR1## wherein R.sub.1 represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; and Q represents a cyan coupler residue capable of forming a dye upon coupling with an oxidized aromatic primary amine developing agent, ##STR2## wherein R.sub.2 represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; and R.sub.3 and R.sub.Type: GrantFiled: July 12, 1983Date of Patent: January 22, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Tsumoru Hirano, Mitsunori Hirano, Makoto Umemoto
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Patent number: 4474870Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by the following general formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain; R.sub.Type: GrantFiled: January 11, 1983Date of Patent: October 2, 1984Assignee: Fuji Photo Film Company LimitedInventors: Morio Yagihara, Keiji Mihayashi, Takashi Ozawa
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Patent number: 4455366Abstract: A silver halide color, photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a cyan color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by the following general formula (I): ##STR1## wherein R.sub.1 represents a hydroden atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 represents a hydrogen atom or an unsubstituted or substituted alkyl group having from 1 to 4 carbon atoms; A.sub.1 represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain; A.sub.2 represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain, an unsubstituted or substituted aralkylene group or an unsubstituted or substituted phenylene group; B.Type: GrantFiled: June 6, 1983Date of Patent: June 19, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsumoru Hirano, Makoto Umemoto, Morio Yagihara
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Patent number: 4455363Abstract: A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, an organic silver salt oxidizing agent, a hydrophilic binder, a reducing agent for the silver halide and/or the organic silver salt oxidizing agent and a magenta color image forming polymer coupler latex which is capable of forming a diffusible dye upon coupling with an oxidized product of the reducing agent and which is a homopolymer or copolymer having a repeating unit derived from a monomer coupler represented by the following general formula (I): ##STR1## wherein R.sub.1 represents hydrogen, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 and R.sub.Type: GrantFiled: March 2, 1983Date of Patent: June 19, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideki Naito, Hiroshi Hara, Morio Yagihara
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Patent number: 4444870Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a layer containing at least one copolymer coupler latex having a layered structure capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent. The polymer coupler latex having a layered structure has an exceptionally good color forming property and is capable of forming a dye with a high yield and without the formation of undesired stains and fogs. The silver halide color photographic light-sensitive material containing the polymer coupler latex has good film strength and a reduced layer thickness and provides a color image having an improved sharpness. A method of forming a color image using the silver halide color photographic light-sensitive material is also disclosed.Type: GrantFiled: September 7, 1982Date of Patent: April 24, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsumoru Hirano, Keiji Mihayashi, Morio Yagihara
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Patent number: 4436808Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a homopolymer or copolymer having a repeating unit derived from a monomer coupler represented by the following general formula (I): ##STR1## wherein R.sub.1 represents hydrogen, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 and R.sub.3, which may be the same or different, each represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain, an unsubstituted or substituted arylene group or an unsubstituted or substituted aralkylene group; X represents --CONH-- or --COO--; Y represents --O--, --S--, --SO--, --SO.sub.2 --, --CONH-- or --COO--; Ar represents an unsubstituted or substituted phenyl group; R.sub.Type: GrantFiled: February 25, 1983Date of Patent: March 13, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Tsumoru Hirano, Keiji Mihayashi
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Patent number: 4435503Abstract: A silver halide color photographic light-sensitive material containing a 4-equivalent magenta color image forming polymer coupler latex and at least one compound capable of reacting with and fixing formaldehyde gas. The silver halide color photographic light-sensitive material has good film strength and a reduced layer thickness. It is possible to avoid the decrease in color density and the formation of fog normally present when the silver halide color photographic light-sensitive material is stored for a long period of time in contact with formaldehyde gas.Type: GrantFiled: July 13, 1982Date of Patent: March 6, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiji Mihayashi, Tadashi Ogawa, Morio Yagihara
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Patent number: 4416978Abstract: A silver halide color photographic light-sensitive material containing a magenta color image forming polymer coupler latex and at least one compound represented by the following general formula (I) ##STR1## wherein R represents an alkyl group, an alkenyl group, an aryl group, a heterocyclic group, a R.sub.4 CO-- group, a R.sub.5 SO.sub.2 -- group or a R.sub.6 NHCO-- group; R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkoxy group or an alkenoxy group; R.sub.3 represents a hydrogen atom, an alkyl group, an alkenyl group or an aryl group; and R.sub.4, R.sub.5 and R.sub.6 each represents an alkyl group, an alkenyl group, an aryl group or a heterocyclic group.Type: GrantFiled: June 10, 1982Date of Patent: November 22, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Masakazu Morigaki, Morio Yagihara, Takashi Ozawa
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Patent number: 4409320Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by the following general formula (I) ##STR1## wherein R represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; and X represents a halogen atom, an acylamino group, a carbamoyl group, a sulfonamido group, a sulfamoyl group, a cyano group or an alkoxycarbonyl group and which is present at the 4-position or 5-position of the phenyl group.Type: GrantFiled: May 10, 1982Date of Patent: October 11, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Tsumoru Hirano, Keiji Mihayashi, Takashi Ozawa
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Patent number: 4388404Abstract: A silver halide color photographic light-sensitive material is described containing a magenta color image forming polymer coupler latex and at least one compound represented by the following general formula (I) ##STR1## wherein R represents an alkyl group; and R.sub.1 and R.sub.2 each represents a tertiary alkyl group and R.sub.1 and R.sub.2 may be the same or different. The disclosed silver halide color photographic light-sensitive material has good film strength, a reduced layer thickness and provides a stable magenta image having an improved sharpness and fastness to light while preventing the formation of yellow stain in non-image areas. A method of forming a color image using the silver halide color photographic light-sensitive material is also described.Type: GrantFiled: April 19, 1982Date of Patent: June 14, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Masakazu Morigaki, Morio Yagihara, Takashi Ozawa
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Patent number: 4367282Abstract: A silver halide color photographic light-sensitive material is described comprising a support having thereon a silver halide emulsion layer containing a 2-equivalent magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by formula (I) ##STR1## wherein R represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; X represents --CONH--, --NH--, --NHCONH-- or --NHCOO--; Y represents --CONH-- or --COO--; A represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain or an unsubstituted or substituted phenylene group; Ar represents an unsubstituted or substituted phenyl group; Za, Zb, Zc and Zd can each represent a methine group, a substituted methine group or -N.dbd.; m represents 0 or 1; and n represents 0 or 1.Type: GrantFiled: December 7, 1981Date of Patent: January 4, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Tsumoru Hirano, Keiji Mihayashi
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Patent number: 4345025Abstract: A color photographic silver halide light-sensitive material containing a colorless photographic cyan color-forming coupler having, in a position for coupling with the oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the following general formula (I):--O--R--SO--R.sub.1 (I)wherein R represents a substituted straight or branched chain alkylene group or a substituted straight or branched chain alkenylene group; R.sub.1 represents a substituted or unsubstituted straight or branched chain alkyl group, a straight or branched chain alkenyl group, a straight or branched chain aralkyl group, a straight or branched chain aralkenyl group, a cycloalkyl group, an aryl group or a heterocyclic group, and R and R.sub.1 may be bonded to each other directly or through a connecting group to form a ring. The 2-equivalent photographic cyan couplers have high coupling speed and excellent dispersibility.Type: GrantFiled: March 11, 1981Date of Patent: August 17, 1982Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Yukio Yokota
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Patent number: 4296199Abstract: A silver halide photographic light-sensitive material is described containing a colorless photographic cyan color-forming coupler having, in a position for coupling with an oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the formula (I)--O--(R.sub.1 S).sub.x (R.sub.2 S).sub.y R.sub.3 (I)wherein R.sub.1 and R.sub.2 each represents an alkylene group; R.sub.3 represents an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; x represents a positive integer; and y represents 0 or a positive integer.The photographic cyan color-forming coupler exhibits excellent dispersibility and color-forming properties.Type: GrantFiled: June 19, 1980Date of Patent: October 20, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Yukio Yokota
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Patent number: 4296200Abstract: A silver halide photographic light-sensitive material containing a colorless photographic cyan color forming coupler having, in a position for coupling with an oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the formula (I):--O--R--S--R.sub.1 (I)wherein R represents a substituted alkylene group or an unsubstituted or substituted alkenylene group, and said alkylene group or alkenylene group may be straight or branched chain; and R.sub.1 represents a substituted or unsubstituted alkyl group, an alkenyl group, an aralkyl group, an aralkenyl group, a cycloalkyl group or a heterocyclic group and said alkyl group, alkenyl group, aralkyl group and aralkenyl group may be straight or branched chain; and said heterocyclic group being connected with a thio group at the position of a carbon atom of the heterocyclic group.Type: GrantFiled: August 12, 1980Date of Patent: October 20, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Yukio Yokota
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Patent number: 4294918Abstract: A color photographic silver halide light-sensitive material is described containing a colorless photographic cyan color-forming coupler having, in a position for coupling with the oxidation product of an aromatic primary amine developing agent, as a coupling-off group, at least one alkoxy group substituted with a sulfinyl group represented by the formula (I)-O-R-SO-R.sub.1 (I)wherein R represents a saturated or unsaturated, divalent aliphatic group which may be straight or branched chain and may be substituted; and R.sub.1 represents a substituted or unsubstituted straight or branched chain alkyl group, an alkenyl group, an aralkyl group, an aralkenyl group, a cycloalkyl group, an aryl group or a heterocyclic group; and said heterocyclic group being connected with a sulfinyl group on the position of a carbon atom of the heterocyclic group.Type: GrantFiled: July 14, 1980Date of Patent: October 13, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Yukio Yokota
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Patent number: 4282312Abstract: A multilayer color photographic material having at least one red sensitive silver halide emulsion layer containing a cyan coupler of the formula (I): ##STR1## wherein X represents a hydrogen atom or a chlorine atom and n is a positive integer of 8 to 20, is processed by a color developer containing a developing agent of the formula (II): ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom, a chlorine atom, a methyl group, an ethyl group, a methoxy group or an ethoxy group; R.sub.5 represents an alkyl group having 1 to 4 carbon atoms, an alkoxyalkyl group wherein the number of carbon atoms in said alkyl moiety is 1 to 4, or a group of the formula --(CH.sub.2).sub.m R.sub.6 ; R.sub.6 represents a hydroxy group, a methylsulfonamido group, or an ethylsulfonamido group; and m represents a positive integer of 1 to 4.Type: GrantFiled: December 18, 1979Date of Patent: August 4, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiyuki Watanabe, Takeshi Hirose, Morio Yagihara, Yukio Yokota