Patents by Inventor Kouichi Kawamura
Kouichi Kawamura 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: 5153095Abstract: A light-sensitive composition comprises (A) a polymer comprising structural units represented by the following general formula (I): ##STR1## (wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents a hydrogen atom, an alkyl group or an aryl group; and Z represents a bivalent connecting group having at least 3 non-metallic atoms in the main chain); (B) a monomer or an oligomer having at least two polymerizable ethylenically unsaturatred double bonds; and (C) a photopolymerization initiator. The light-sensitive composition has high sensitivity and is excellent in stability of sensitivities such as storage stability, temperature dependency and latent image sensitization.Type: GrantFiled: July 15, 1991Date of Patent: October 6, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouichi Kawamura, Hiromichi Sano, Masanori Imai
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Patent number: 5064747Abstract: A light-sensitive composition comprises a photo-crosslinkable polymer having a photo-dimerizable unsaturated bond and a sensitizer represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group or a substituted or unsubstituted allyl group, provided that R.sub.1 and R.sub.2 may form a ring together with the carbon atoms to which they are attached; n represents 0, 1 or 2; and G.sub.1 and G.sub.2 each independently represents a hydrogen atom, a cyano group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted aryloxycarbonyl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted arylcarbonyl group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group or a fluoroalkylsulfonyl group, provided that G.sub.1 and G.sub.Type: GrantFiled: July 19, 1990Date of Patent: November 12, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Masanori Imai, Noriaki Watanabe, Kouichi Kawamura
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Patent number: 5061605Abstract: A photopolymerizable composition comprises an addition polymerizable compound having at least one ethylenically unsaturated double bond and a photopolymerization initiator, wherein it comprises a compound represented by the following general formula (I) as the photopolymerization initiator: ##STR1## (wherein R.sub.1 and R.sub.2 may be the same or different and each independently represents a substituted or unsubstituted alkyl, aryl or alkenyl group or R.sub.1 and R.sub.2 may form a non-metallic ring together with the sulfur atoms to which they are bonded; n is 0, 1 or 2; G.sub.1 and G.sub.2 may be the same or different and each represents a hydrogen atom, a cyano group or a substituted or unsubstituted alkoxycarbonyl, aryloxycarbonyl, acyl, arylcarbonyl, alkylthio, arylthio, alkylsulfonyl, arylsulfonyl or fluoroalkylsulfonyl group, provided that G.sub.1 and G.sub.2 do not simultaneously represent hydrogen atoms or G.sub.1 and G.sub.Type: GrantFiled: April 16, 1991Date of Patent: October 29, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouichi Kawamura, Mitsumasa Tsuchiya
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Patent number: 5051009Abstract: There is disclosed a printer having a thermal print head which is biased towards a cooperable platen roll. The printer uses an ink ribbon cartridge, which is locked into place as the printhead is moved to the print position.Type: GrantFiled: August 15, 1988Date of Patent: September 24, 1991Assignee: Monarch Marking Systems, Inc.Inventors: Ikuzo Sugiura, Mitsuo Uchimura, Kouichi Kawamura
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Patent number: 5028155Abstract: There is disclosed a printer having a spindle which can hold a web roll installed either face side in or face side out. Spaced guides define the path from the roll to the printing mechanism; different guides are utilized depending on the orientation of the particular roll being used.Type: GrantFiled: August 18, 1988Date of Patent: July 2, 1991Assignee: Monarch Marking Systems, Inc.Inventors: Ikuzo Sugiura, Mitsuo Uchimura, Kouichi Kawamura, Ronald L. Fogle, Orville C. Huggins
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Patent number: 5015574Abstract: A expression-secretion vector is constructed by using a DNA sequence comprising a DNA fragment obtained by subjecting a DNA sequence consisting of a region involved in the expression of a gene coding for an extracellular enzyme of a bacterium of the genus Bacillus and a region involved in the secretion of the enzyme thus expressed to a deletion in the region involved in the secretion which can enhance the extracellular production of a protein dependent on the DNA fragment. By transforming a host bacterium with a recombinant DNA molecule formed by inserting a DNA fragment comprising a gene coding for a desired protein into the expression-secretion vector and then culturing the transformed host, the extracellular production of the desired protein in a large amount can be accomplished.Type: GrantFiled: November 20, 1986Date of Patent: May 14, 1991Assignees: Agency of Industrial Science and Technology, Extra-Ministerial Bureau of Ministry of International Trade and IndustryInventors: Yoshio Furutani, Akira Nakayama, Masaru Honjo, Hiroaki Shimada, Kouichi Kawamura, Izumi Mita, Akiko Akaoka
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Patent number: 5004674Abstract: A silver halide photosensitive material comprising a support having thereon a layer containing (a) an organic compound which releases a free radical on contact with light rays and (b) a compound which undergoes a change in the absorption spectrum due to the action of the released free radical.Type: GrantFiled: October 13, 1989Date of Patent: April 2, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiichi Adachi, Kazunobu Katoh, Kouichi Kawamura
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Patent number: 4997745Abstract: A photosensitive composition comprising a trihalomethyl-s-triazine compound and a photosensitizer, wherein the photosensitizer being a dye having a reduction potential not more than 0.10 volt higher than the reduction potential of the trihalomethyl-s-triazine compound, and a photopolymerizable composition employing the photosensitive composition.Type: GrantFiled: August 11, 1989Date of Patent: March 5, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouichi Kawamura, Hirotaka Matsumoto, Jun Yamaguchi
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Patent number: 4899947Abstract: There is disclosed a printer having a thermal print head and a cooperable platen roll. The platen roll is driven to advance a web of record medium and an ink ribbon into cooperation with the print head. The printer can use an ink ribbon cartridge. The printer has a compact arrangement for the record medium supply roll, the ink ribbon cartridge, the printing mechanism, the drive mechanism, the keyboard, and the cutting mechanism for cutting tags from the web. The supply roll is mounted on a reel having first and second side plates on a hub. A first hub member is connected to the first side plate. A second hub member is adapted to be connected either to the second side plate in opposition to the first hub member in its first position so that the first and second hub members support the supply roll or to the first hub member when the first hub member is in its second position so that the hub is adapted to support a supply roll between the first and second side plates.Type: GrantFiled: August 15, 1988Date of Patent: February 13, 1990Assignee: Monarch Marking Systems, Inc.Inventors: Ikuzo Sugiura, Mitsuo Uchimura, Kouichi Kawamura, Ronald L. Fogle, Orville C. Huggins
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Patent number: 4826753Abstract: A light-sensitive composition containing a polymerizable compound having at least one ethylenically unsaturated group, and a photopolymerization initiator of general formula (I): ##STR1## wherein Y represents --COOR.sub.1, ##STR2## --R.sub.3 --COOR.sub.1, --R.sub.3 --CONHR.sub.1 or --NHCO--R.sub.4 (wherein R.sub.1 represents a hydrogen atom, an alkyl group, or an aryl group; R.sub.2 represents a hydrogen atom or a methyl group; R.sub.3 represents an alkylene group; R.sub.4 represents an alkyl group, an alkoxy group, an aryl group; and l and m respectively represents integers of 1 to 10.); Ar represents a phenylene, naphthylene or heterocyclic aromatic group; X represents a chlorine atom or a bromine atom; and n represents 1 or 2.The light-sensitive composition has a good stability over time since crystallization of the photopolymerization initiator on the surface of the light-sensitive layer is inhibited.Type: GrantFiled: September 4, 1987Date of Patent: May 2, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Tatsuji Higashi, Kouichi Kawamura, Yukio Abe
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Patent number: 4776714Abstract: There is disclosed a printer having a thermal print head and a cooperable platen roll. The platen roll is driven to advance a web of record medium and an ink ribbon into cooperation with the print head. The printer can use an ink ribbon cartridge. The printer has a compact arrangement for the record medium supply roll, the ink ribbon cartridge, the printing mechanism, the drive mechanism, the keyboard, and the cutting mechanism for cutting tags from the web. The ink ribbon cartridge has shiftable guide rolls cooperating with pins on the printer to assure accurate alignment of the ribbon on the print head.Type: GrantFiled: July 15, 1986Date of Patent: October 11, 1988Assignee: Monarch Marking Systems, Inc.Inventors: Ikuzo Sugiura, Mitsuo Uchimura, Kouichi Kawamura, Ronald L. Fogle, Orville C. Huggins
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Patent number: 4772534Abstract: A light-sensitive composition containing a novel light-sensitive s-triazine compound represented by the formula (I) as a free radical-generating agent is disclosed. The s-triazine compound responds radiation in the range of the near ultraviolet to visible light, shows high sensitivity for photolysis and, therefore, the compositon has high light-sensitivity.Type: GrantFiled: September 5, 1986Date of Patent: September 20, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouichi Kawamura, Hirokazu Kondo, Yoshimasa Aotani
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Patent number: 4636459Abstract: A photopolymerizable composition containing an addition polymerizable compound having at least one ethylenically unsaturated double bond and a photopolymerization initiator is disclosed, wherein the photopolymerizable composition contains at least one compound represented by following general formula (I) or (II) as the photopolymerization initiator: ##STR1## wherein, R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 each represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, an allyl group or a substituted allyl group, said R.sub.1 and R.sub.2 may combine with each other to form a ring together with the carbon atoms to which they are bonded; Y represents --O--, --S--, --Se--, --C(CH.sub.3).sub.2 -- or --CH.dbd.CH--; X.sub.1 represents an oxygen atom or a sulfur atom; R.sub.11, R.sub.12, R.sub.17, and R.sub.Type: GrantFiled: March 6, 1986Date of Patent: January 13, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouichi Kawamura, Yoshimasa Aotani, Akira Umehara, Seiji Horie
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Patent number: 4622280Abstract: Disazo compounds represented by the following general formula (I) are disclosed. The compounds can function as effective photoconductive substances and further, as efficient charge carrier (both electron and positive hole) generating compounds in an electrophotographic photoreceptor: ##STR1## (wherein X represents atoms necessary to form an aromatic ring, such as a naphthalene ring, an anthracene ring, etc., or a netero ring, such as an indole ring, a carbazole ring, a dibenzofuran ring etc., (all of which rings may be either substituted ones or nonsubstituted ones) by combining with the benzene ring to which a hydroxyl group and a group Y are attached; Y represents ##STR2## R.sup.1 represents an alkyl group, a phenyl group or a substituted group thereof; R.sup.2 represents a hydrogen atom, a lower alkyl group, a carbamoyl group, a carboxyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, or a substituted or a nonsubstituted amino group; R.sup.3 and R.sup.Type: GrantFiled: July 16, 1985Date of Patent: November 11, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Naonori Makino, Kouichi Kawamura, Seiji Horie, Hideo Sato
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Patent number: 4598033Abstract: A photoconductive composition comprising at least one disazo compound represented by the following general formula (I): ##STR1## wherein X, L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, A, m and n are as defined in the description and an electrophotographic light-sensitive material containing the disazo compound are disclosed.The disazo compound is effective for improving both sensitivity and durability of the light-sensitive material.Type: GrantFiled: October 12, 1984Date of Patent: July 1, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouichi Kawamura, Seiji Horie, Naonori Makino, Hideo Sato
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Patent number: 4568623Abstract: Disazo compounds of a specified structure as a photoconductive element for photoreceptors in an electrophotographic process, which achieve higher photosensitivity and higher durability compared with conventional organic photoconductive materials, useful with copying machines, printers, video camera pickup tubes and semiconductor circuits for signal transfer and scanning.Type: GrantFiled: June 1, 1984Date of Patent: February 4, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Naonori Makino, Seiji Horie, Kouichi Kawamura, Hideo Sato
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Patent number: 4557988Abstract: Disazo compounds as well as the compositions an electrophotographic light-sensitive materials utilizing them are disclosed. The disazo compounds are represented by the general formula (I): ##STR1## wherein the substituents within the general formula (I) are defined within the specification. By utilizing the specifically disclosed disazo compounds the electrophotographic light-sensitive material has high sensitivity and high durability.Type: GrantFiled: September 1, 1983Date of Patent: December 10, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Horie, Kouichi Kawamura, Naonori Makino, Hideo Sato
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Patent number: 4555474Abstract: A photopolymerizable composition is described, comprising a polymerizable compound having an ethylenically unsaturated bond and a photopolymerization initiator represented by formula (I) ##STR1## wherein Z represents a non-metallic atomic group forming a nitrogen-containing heterocyclic ring; and R represents a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic ring. The photopolymerization initiator (I) greatly improves the sensitivity of the composition.Type: GrantFiled: February 4, 1985Date of Patent: November 26, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouichi Kawamura, Yoshimasa Aotani, Akira Umehara
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Patent number: 4548892Abstract: A photopolymerizable composition is described, containing an addition polymerizable, unsaturated compound having two or more ethylenically unsaturated double bonds within the molecule and a photopolymerization initiator, wherein said photopolymerization initiator is an acylhaloacetic acid amide derivative represented by formula (I) ##STR1## wherein Ar represents a substituted or unsubstituted aryl group, X represents a carbonyl or sulfonyl group, Y represents a chlorine atom or a bromine atom, R represents a hydrogen atom, a chlorine atom or a bromine atom, and R.sup.a and R.sup.b each represents a hydrogen atom, a substituted or unsubstituted alkyl group, an aryl group, or an aralkyl group.Type: GrantFiled: January 29, 1985Date of Patent: October 22, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Masayuki Iwasaki, Minoru Maeda, Fumiaki Shinozaki, Kouichi Kawamura
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Patent number: 4535045Abstract: An electrophotographic light-sensitive material is described. The material is comprised of an electrically conductive support and a light-sensitive layer on the support. The light-sensitive layer contains a copolymer comprising: (a) vinylidene chloride or vinyl chloride; (b) a vinyl based unsaturated monomer represented by the general formula: CH.sub.2 =C(R.sub.1)(R.sub.2) (wherein the symbols are as defined in the appended claims); and (c) a vinyl monomer containing a hydroxyl group at the side chain thereof. This light-sensitive layer exhibits good adhesive properties, is superior in durability and moisture resistance, and produces images free from white spots and fog.Type: GrantFiled: November 4, 1983Date of Patent: August 13, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Kouichi Kawamura, Seiji Horie, Hideo Sato