Patents by Inventor Masayuki Iwasaki
Masayuki Iwasaki 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: 6730632Abstract: A heat-sensitive recording material which includes, on a substrate, at least one heat-sensitive color developing layer containing an electron-donating colorless dye, 2,4-bis(phenylsulfonyl)phenol as an electron-accepting compound, and a sulfonic acid-modified polyvinyl alcohol and at least one modified polyvinyl alcohol other than the sulfonic acid-modified polyvinyl alcohol as binders, an outermost layer of the heat-sensitive recording material containing a lubricant.Type: GrantFiled: May 23, 2003Date of Patent: May 4, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsutomu Watanabe, Masayuki Iwasaki, Hirofumi Mitsuo
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Patent number: 6720286Abstract: A heat-sensitive recording material comprising a substrate and a heat-sensitive coloring layer containing a colorless electron-donating dye, an electron-accepting compound including at least 4,4′-dihydroxydiphenylsulfone, and a sensitizer comprising 2-benzyloxynaphthalene and aliphatic monoamide in the mass ratio in a range of 30/70 to 70/30.Type: GrantFiled: September 12, 2001Date of Patent: April 13, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Hirofumi Mitsuo, Masayuki Iwasaki
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Patent number: 6714510Abstract: An information recording medium includes a substrate, and one or a plurality of layers formed on the substrate, wherein at least one of the layers is formed by mixing a base material and a hard material which has a predetermined thickness and determines a predetermined thickness of the layer.Type: GrantFiled: March 7, 2001Date of Patent: March 30, 2004Assignee: Pioneer CorporationInventors: Takanori Maeda, Masayuki Iwasaki
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Patent number: 6699816Abstract: A heat-sensitive recording material in which a heat-sensitive color-developing layer containing at least an electron-donating colorless dye, an electron-accepting compound, a sensitizer and preferably an image stabilizer is disposed on a support, the heat-sensitive color-developing layer containing (1) 4-hydroxybenzenesulfonanilide as the electron-accepting compound and (2) 2-benzyloxynaphthalene and ethylenebisstearic acid amide or methylolstearic acid amide as the sensitizer, and (3) the 2-benzyloxynaphthalene (x) to ethylenebisstearic acid amide or methylolstearic acid amide (y) mass ratio (x/y) being within 95/5 to 40/60 range.Type: GrantFiled: July 2, 2002Date of Patent: March 2, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Masayuki Iwasaki, Tsutomu Watanabe, Hirofumi Mitsuo
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Patent number: 6690500Abstract: An aberration correction device for correcting aberration produced in a light beam, which includes: a first electrode layer and a second electrode layer being opposed to each other; and a liquid crystal disposed between the first electrode layer and the second electrode layer for producing a change in phase in a light beam passing therethrough in accordance with voltages applied to the first electrode layer and the second electrode layer. The first electrode layer is divided into a plurality of phase adjustment portions which are electrically isolated each other. Each of the plurality of phase adjustment portions includes a pair of electrodes arranged in such a form that produces an electric field distribution for correcting the aberration by applying predetermined voltages thereto.Type: GrantFiled: June 21, 2001Date of Patent: February 10, 2004Assignee: Pioneer CorporationInventors: Masakazu Ogasawara, Masayuki Iwasaki, Yoshitsugu Araki
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Patent number: 6674710Abstract: A liquid-crystal panel is placed in an optical path of an optical beam from a light source to a recording surface of a recording medium for compensating wavefront aberration of the optical beam by giving a phase difference to the optical beam. The liquid-crystal panel comprises a layer of a liquid crystal material having an index of birefringence, wherein the product of the index of birefringence and thickness of the layer of the liquid crystal material is 0.4 &mgr;m or more.Type: GrantFiled: February 28, 2003Date of Patent: January 6, 2004Assignee: Pioneer Electronic CorporationInventor: Masayuki Iwasaki
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Publication number: 20030232193Abstract: A dry film resist has a support. First and second photo resist layers are disposed on the support, developable in alkaline development, and sensitive to active energy rays. The first photo resist layer is overlaid on the support. The second photo resist layer is overlaid on the first photo resist by application in a state of water dispersion emulsion. A protective film is overlaid on the second photo resist layer in a peelable manner. The first photo resist layer includes first binder, soluble in aqueous solution of alkali, and obtained by solution polymerization, and also includes polyfunctional monomer and active energy ray initiator. The second photo resist layer is formed after drying of coating liquid constituting the first photo resist layer, and includes second binder of emulsion, soluble in aqueous solution of alkali, and obtained by emulsion polymerization. Polyfunctional monomer and active energy ray initiator are mixed in a form of water dispersion with the second binder.Type: ApplicationFiled: June 11, 2003Publication date: December 18, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Masayuki Iwasaki
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Publication number: 20030224935Abstract: A heat-sensitive recording material which includes, on a substrate, at least one heat-sensitive color developing layer containing an electron-donating colorless dye, 2,4-bis(phenylsulfonyl)phenol as an electron-accepting compound, and a sulfonic acid-modified polyvinyl alcohol and at least one modified polyvinyl alcohol other than the sulfonic acid-modified polyvinyl alcohol as binders, an outermost layer of the heat-sensitive recording material containing a lubricant.Type: ApplicationFiled: May 23, 2003Publication date: December 4, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Tsutomu Watanabe, Masayuki Iwasaki, Hirofumi Mitsuo
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Patent number: 6642175Abstract: A heat-sensitive recording material formed of a support having disposed thereon a heat-sensitive color-forming layer that includes an electron-donating leuco-dye and an electron-receiving compound, with the heat-sensitive color-forming layer including, N-(4-hydroxyphenyl)-p-toluenesulfonamide as the electron-donating leuco-dye. The heat-sensitive color-forming layer may include 2-benzyloxynaphthalene or a combination of 2-benzyloxynaphthalene and methylolstearic acid amide as a sensitizer, calcite-type precipitated calcium carbonate light and/or aluminium hydroxide as an inorganic pigment, polyvinyl alcohol having a degree of saponification of 85 to 99 mol % and a degree of polymerization of from 200 to 2000 as an adhesive, and 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane and/or 1,1,3-tris(2-methyl-4-hydroxy-5-cyclohexylphenyl)butane as an image stabilizer.Type: GrantFiled: October 3, 2001Date of Patent: November 4, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Hirofumi Mitsuo, Tsutomu Watanabe, Masayuki Iwasaki
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Patent number: 6643244Abstract: A liquid-crystal panel is placed in an optical path of an optical beam from a light source to a recording surface of a recording medium for compensating wavefront aberration of the optical beam by giving a phase difference to the optical beam. The liquid-crystal panel comprises a layer of a liquid crystal material having an index of birefringence, wherein the product of the index of birefringence and thickness of the layer of the liquid crystal material is 0.4 &mgr;m or more.Type: GrantFiled: July 14, 1999Date of Patent: November 4, 2003Assignee: Pioneer Electronic CorporationInventor: Masayuki Iwasaki
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Patent number: 6628589Abstract: An apparatus and a method are provided for compensating an aberration occurring in a reflected light beam from a recording medium. The apparatus includes a liquid crystal unit including a first electrode layer having divisional electrodes and a second electrode layer, and a liquid crystal element which provides a light beam with a phase change when an electric field is applied; a detector for receiving the reflected light beam through the liquid crystal unit to generate a detection signal; a voltage generator for generating voltages to be applied to the divisional electrodes; and a controller for performing aberration compensation control by changing the applied voltages to each of the divisional electrodes with reference to an applied reference voltage to a predetermined divisional electrode. The controller determines the applied reference voltage based on an amplitude change of the detection signal when the applied voltages to the divisional electrodes are changed.Type: GrantFiled: March 26, 2001Date of Patent: September 30, 2003Assignee: Pioneer CorporationInventors: Masayuki Iwasaki, Masakazu Ogasawara
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Publication number: 20030148886Abstract: A heat-sensitive recording material including, on a support, a heat-sensitive color-developable layer containing an electron-donating colorless dye and an electron-accepting compound, wherein the electron-accepting compound contains a compound represented by R1—Ph—SO2R2, and an adhesive strength when an adhesive sheet such as a revenue stamp is affixed to a recording face of a heat-sensitive recording paper made of the heat-sensitive recording material is larger than a given value, and a center line average roughness Ra75 of the heat-sensitive recording face is 2.0 &mgr;m or less.Type: ApplicationFiled: December 19, 2002Publication date: August 7, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Masayuki Iwasaki, Tsutomu Watanabe, Hirofumi Mitsuo
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Publication number: 20030134746Abstract: A heat-sensitive recording material in which a heat-sensitive color-developing layer containing at least an electron-donating colorless dye, an electron-accepting compound, a sensitizer and preferably an image stabilizer is disposed on a support, the heat-sensitive color-developing layer containing (1) 4-hydroxybenzenesulfonanilide as the electron-accepting compound and (2) 2-benzyloxynaphthalene and ethylenebisstearic acid amide or methylolstearic acid amide as the sensitizer, and (3) the 2-benzyloxynaphthalene (x) to ethylenebisstearic acid amide or methylolstearic acid amide (y) mass ratio (x/y) being within 95/5 to 40/60 range.Type: ApplicationFiled: July 2, 2002Publication date: July 17, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Masayuki Iwasaki, Tsutomu Watanabe, Hirofumi Mitsuo
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Publication number: 20030133392Abstract: A liquid-crystal panel is placed in an optical path of an optical beam from a light source to a recording surface of a recording medium for compensating wavefront aberration of the optical beam by giving a phase difference to the optical beam. The liquid-crystal panel comprises a layer of a liquid crystal material having an index of birefringence, wherein the product of the index of birefringence and thickness of the layer of the liquid crystal material is 0.4 &mgr;m or more.Type: ApplicationFiled: February 28, 2003Publication date: July 17, 2003Applicant: PIONEER ELECTRONIC CORPORATIONInventor: Masayuki Iwasaki
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Publication number: 20030114307Abstract: A heat-sensitive recording material includes a support having disposed thereon a heat-sensitive color-forming layer that includes an electron-donating leuco-dye, an electron-receiving compound and an UV absorbent, wherein the layer contains 4-hydroxybenzenesulfonanilide as the electron-receiving compound. Because the layer includes 4-hydroxybenzenesulfonanilide, the heat-sensitive recording material has high sensitivity and improved image preservability, chemical resistance and sticking resistance.Type: ApplicationFiled: August 21, 2002Publication date: June 19, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Tsutomu Watanabe, Masayuki Iwasaki, Hirofumi Mitsuo
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Publication number: 20030087759Abstract: A heat-sensitive recording material includes a support having successively disposed thereon: a heat-sensitive color-forming layer containing an electron-donating colorless dye and an electron-accepting compound; and a protective layer; wherein the heat-sensitive color-forming layer contains a water-soluble polymer and 4-hydroxybenzenesulfonanilide as the electron-accepting compound, and the protective layer contains at least one inorganic pigment selected from aluminum hydroxide, kaolin and amorphous silica. The electron-donating colorless dye is preferably at least one selected from 2-anilino-3-methyl-6-di-n-butylaminofluoran, 2-anilino-3-methyl-6-di-n-amylaminofluoran and 2-anilino-3-methyl-6-(N-ethyl-N-p-benzyl)aminofluoran.Type: ApplicationFiled: July 3, 2002Publication date: May 8, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Masayuki Iwasaki, Tsutomu Watanabe, Hirofumi Mitsuo
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Publication number: 20030087179Abstract: A positive photoresist transfer material, wherein an alkali-soluble thermoplastic resin layer, an intermediate layer and a positive photoresist layer are successively applied on an adhesive surface of a temporary support, and adhesion between the positive photoresist layer and the intermediate layer is less than adhesion between other layers or surfaces.Type: ApplicationFiled: May 13, 2002Publication date: May 8, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Masayuki Iwasaki
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Patent number: 6487160Abstract: An optical pickup is provided with: a light emitting device for emitting a light beam onto a record medium comprising a transparent layer, which is transparent for the light beam and through which the light beam is transmitted; a light receiving device for receiving a reflection light of the light beam from the record medium; a liquid crystal compensating device for compensating birefringence, which is generated in the light beam when the light beam is transmitted through the transparent layer, by controlling an orientation direction of liquid crystal molecules in a liquid crystal layer so as to give a canceling phase difference to the light beam transmitted through the liquid crystal layer; a generating device for generating an indication signal indicative of the birefringence; and a controlling device for controlling the orientation direction on the basis of the indication signal so that a first angle between a standard line, which is perpendicular to an optical axis of the light beam and is set in advance,Type: GrantFiled: March 17, 2000Date of Patent: November 26, 2002Assignee: Pioneer CorporationInventors: Tetsuya Iida, Osamu Kasono, Masayuki Iwasaki
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Publication number: 20020155950Abstract: A thermal recording material having a thermal color-forming layer which contains an electron-donating leuco-dye and an electron-receiving compound, and a protective layer formed in that order on a support. The protective layer of the material contains an inorganic dye and at least one of an amide-denatured polyvinyl alcohol and a diacetone-denatured polyvinyl alcohol.Type: ApplicationFiled: December 4, 2001Publication date: October 24, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Masayuki Iwasaki, Takayuki Matsumoto, Tetsuo Takeuchi, Hirofumi Mitsuo
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Publication number: 20020065195Abstract: A heat-sensitive recording material formed of a support having disposed thereon a heat-sensitive color-forming layer that includes an electron-donating leuco-dye and an electron-receiving compound, with the heat-sensitive color-forming layer including, N-(4-hydroxyphenyl)-p-toluenesulfonamide as the electron-donating leuco-dye. The heat-sensitive color-forming layer may include 2-benzyloxynaphthalene or a combination of 2-benzyloxynaphthalene and methylolstearic acid amide as a sensitizer, calcite-type precipitated calcium carbonate light and/or aluminium hydroxide as an inorganic pigment, polyvinyl alcohol having a degree of saponification of 85 to 99 mol % and a degree of polymerization of from 200 to 2000 as an adhesive, and 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane and/or 1,1,3-tris(2-methyl-4-hydroxy-5-cyclohexylphenyl)butane as an image stabilizer.Type: ApplicationFiled: October 3, 2001Publication date: May 30, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Hirofumi Mitsuo, Tsutomu Watanabe, Masayuki Iwasaki