Patents by Inventor Yonosuke Takahashi
Yonosuke Takahashi 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: 6235445Abstract: The present invention provides a thermal transfer sheet comprising a substrate, and a light-to-heat conversion layer containing a substance capable of converting light to heat and a binder, and an image forming layer, which are disposed on the substrate, wherein the binder in the light-to-heat conversion layer is a polyimide resin soluble in an organic solvent. In the thermal transfer sheet provided by the present invention, the light-to-heat conversion layer is not affected by the coating liquid disposed as a layer on the light-to-heat conversion layer. Further, the light-to-heat conversion layer thus formed exhibits high heat resistance and humidity resistance. Accordingly, the thermal transfer sheet of the present invention produces good images with little or no fogging.Type: GrantFiled: April 14, 1999Date of Patent: May 22, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideyuki Nakamura, Yonosuke Takahashi
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Patent number: 5731263Abstract: A heat sensitive ink sheet has a heat sensitive ink layer which is formed of a heat sensitive ink material comprising colored pigment and thermoplastic resin such as amorphous organic polymer. An image receiving sheet having a support sheet and an image receiving layer thereon, the support sheet of the image receiving sheet being a porous sheet made of plastics which have fine pores therein. An image forming method is conducted by using the heat sensitive ink sheet and an image receiving sheet by area gradation by the use of a thermal head or laser beam.Type: GrantFiled: April 25, 1996Date of Patent: March 24, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Mikio Totsuka, Toshiharu Tanaka, Yonosuke Takahashi, Shinichi Yoshinari
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Patent number: 5726698Abstract: A method for thermal transfer recording of a multicolor image which utilizes a heat sensitive ink sheet having a support sheet and a transparent heat sensitive ink layer having a thickness of 0.2 to 1.0 .mu.m which is formed of a heat sensitive ink material comprising 30 to 70 weight parts of a colored pigment at least 70 weight % of which has a particle size of not more than 1.0 .mu.m and 25 to 60 weight parts of amorphous organic polymer having a softening point of 40.degree. to 150.degree. C.Type: GrantFiled: October 21, 1994Date of Patent: March 10, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Fumiaki Shinozaki, Hideyuki Nakamura, Yonosuke Takahashi
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Patent number: 5608441Abstract: Disclosed is a thermal-transfer recording process employing a transfer material and a image-receiving sheet. The transfer material comprises a support film and an image forming layer containing a coloring material and an organic polymer, and the image-receiving sheet comprises a substrate and a photopolymerizable or photosensitive thermal-adhesive layer.Type: GrantFiled: April 4, 1996Date of Patent: March 4, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Yonosuke Takahashi, Fumiaki Shinozaki
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Patent number: 5534905Abstract: Disclosed is a thermal-transfer recording process employing a transfer material and a image-receiving sheet. The transfer material comprises a support film and an image forming layer containing a coloring material and an organic polymer, and the image-receiving sheet comprises a substrate and a photopolymerizable or photosensitive thermal-adhesive layer.Type: GrantFiled: October 13, 1993Date of Patent: July 9, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Yonosuke Takahashi, Fumiaki Shinozaki
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Patent number: 5534383Abstract: An image forming method comprises the steps of applying a laser light imagewise and sequentially onto a laminate for image formation and separating the image receiving sheet from other materials of the laminate so as to keep on the image receiving sheet an imagewise transferred image formation layer comprising the thermoplastic resin and pigment.Type: GrantFiled: August 9, 1995Date of Patent: July 9, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Yonosuke Takahashi, Naoya Imamura, Hideyuki Nakamura, Kouya Kawabata
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Patent number: 5352562Abstract: Disclosed is an image forming process employing a light-sensitive image forming material. The image forming material comprises a support, a light-heat conversion layer and an image forming layer, superposed in order. The process comprises the steps of imagewise exposing the image forming material to light so as to increase a bonding strength between the light-heat conversion layer and the image forming layer in the exposed area, pressing a receiving sheet on the light-heat conversion layer, and removing the receiving sheet from the image forming material to form a negative image on the receiving sheet in the unexposed area and to leave a positive image on the light-heat conversion layer in the exposed area.Type: GrantFiled: March 26, 1992Date of Patent: October 4, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Yonosuke Takahashi, Hideyuki Nakamura, Fumiaki Shinozaki
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Patent number: 4906556Abstract: An optical recording medium comprising a substrate and a recording layer made of metal and/or semi-metal and on which data can be recorded with a laser beam, wherein a plasma polymerization layer is formed on at least an upper surface of said recording layer.Type: GrantFiled: July 10, 1989Date of Patent: March 6, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuo Nishikawa, Yonosuke Takahashi
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Patent number: 4821050Abstract: An optical information recording medium of two disc substrates, which are adhered directly or through a convex portion formed on at least one of the substrates or a spacer provided between the substrates by an adhesive layer, and a recording layer which is capable of recording and/or reading information by laser beam and which is provided on a surface of at least one of the substrates facing the other substrate, wherein the adhesive layer is formed by an ultraviolet-curing epoxy adhesive composition comprising a light-initiator which produces a cationic polymerization initiator upon irradiation with ultraviolet rays and an epoxy compound having two or more epoxy groups per molecule.Type: GrantFiled: July 17, 1987Date of Patent: April 11, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Masao Yabe, Yonosuke Takahashi
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Patent number: 4609611Abstract: A light information recording medium useful for light disc memories is described, comprising a support and a recording layer formed thereon containing a mixture of a metal with at least one of Ga.sub.2 S.sub.3 and MoO.sub.3.Type: GrantFiled: November 6, 1984Date of Patent: September 2, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Masamiti Sigyo, Minoru Wada, Yonosuke Takahashi
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Patent number: 4544627Abstract: A negative-working image forming process which comprises uniformly exposing a photosensitive material comprising a support having thereon a sensitive layer comprising (i) an o-quinonediazide compound and (ii) a second compound, to actinic radiation which is able to convert the o-quinonediazide compound to the corresponding indenecarboxylic acid compound, and subsequent to said uniformly exposing imagewise exposing said exposed photosensitive material to a laser beam to thereby render the indenecarboxylic acid compound of the imagewise exposed areas convert to the corresponding indene compound and developing with an alkaline developing solution to dissolve out the unexposed area to the laser beam, wherein said second compound reduces the rate of dissolution of the laser exposed areas in the developing solution by converting the indenecarboxylic acid to the corresponding indene compound, whereby said image results.Type: GrantFiled: November 3, 1983Date of Patent: October 1, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Yonosuke Takahashi, Hiromichi Tachikawa, Fumiaki Shinozaki, Tomoaki Ikeda
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Patent number: 4529991Abstract: Methods for copying optical information are disclosed. The methods comprise the steps of disposing a master mask with a tracking signal or other information recorded therein over an optical memory material comprised of heat mode recording material which can be thermally altered in order to deform or remove the material upon the application of an energy beam, permitting recording on the altered recording material and irradiating the master disk with flash light for a period of 1 microsecond or less, or in the alternative, scanning with a laser beam focused to a spot having a diameter of at least 10 .mu.m on the master mask with the exposure time at each area of the optical memory material being preferably 1 microsecond or less.Type: GrantFiled: May 20, 1982Date of Patent: July 16, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Wada, Yonosuke Takahashi, Eiichi Hasegawa
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Patent number: 4500889Abstract: In a method for recording information by irradiating an optical information recording material comprising a heat mode recording layer comprising a metal on a base with a light beam, the method for recording optical information in which said heat mode recording layer consists of a metal and at least one metal compound selected from metal oxides and metal sulfides and the proportion of the amount of the metal to that of said metal compound increases or decreases in the direction of the thickness of the layer, said recording layer having a layer comprising of mixture of at least one of the metal and at least one of the metal compound, in which irradiation with the light beam is conducted from the side where the proportion of the metal in the recording layer is smaller, and in which melting and removing are conducted until the difference in reflectance of the light between the non-recorded area and the recorded area reaches an extent which permits reading by light.Type: GrantFiled: June 21, 1982Date of Patent: February 19, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Wada, Yonosuke Takahashi, Eiichi Hasegawa
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Patent number: 4499178Abstract: An optical information recording material which comprises a substrate having thereon a heat mode recording layer made of a metal and a metal compound that increases the sensitivity of said recording layer and decreases the reflectivity of said recording layer, a reflecting layer made of a metal, and a heat insulating layer interposed between said recording layer and said reflecting layer. The material makes it possible to record information at high sensitivity and read recorded information by reflected light at high contrast.Type: GrantFiled: June 14, 1982Date of Patent: February 12, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Wada, Yonosuke Takahashi, Eiichi Hasegawa
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Patent number: 4473633Abstract: A light information recording medium is disclosed. The medium is comprised of a support which has transparency with respect to light. The support has coated thereon a light sensitive recording layer which contains SiO.sub.2 and In at the SiO.sub.2 content of 10 to 35 vol. % based on the total volume of SiO.sub.2 and In. The recording medium can be used for the recording and reading of the information recorded thereon by striking the medium with laser light from the support side. The recording medium can be used as an optical disk memory having excellent recording sensitivity with respect to laser light, long preservability and high resolving power as well and high S/N ratio.Type: GrantFiled: December 16, 1982Date of Patent: September 25, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Wada, Yonosuke Takahashi, Eiichi Hasegawa
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Patent number: 4414273Abstract: Thermal recording materials comprising a thermal recording layer provided on a base, which do not deteriorate with the passage of time due to moisture or oxygen in the air, are disclosed, wherein a stabilizing film composed of at least one metal selected from the group consisting of In, Al, Ag, Au, Rh, Pd, Ir and Pt is provided on at least one face of the recording layer and the film has a thickness of 20 to 100 .ANG..Type: GrantFiled: May 20, 1982Date of Patent: November 8, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Wada, Yonosuke Takahashi, Eiichi Hasegawa
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Patent number: 4405706Abstract: An optical information recording medium is disclosed.The medium is comprised of a plastic substrate made of acrylic resin, an undercoating comprised at least one of polyvinyl pyrrolidone and polyvinyl formal on the substrate, and a heat mode recording layer comprised of metal on the undercoating. The recording medium has improved adhesion between the recording layer and the substrate without decreasing the sensitivity of the recording layer.Type: GrantFiled: June 14, 1982Date of Patent: September 20, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Yonosuke Takahashi, Minoru Wada, Eiichi Hasegawa
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Patent number: 4388400Abstract: A heat-mode recording material is disclosed. The material comprises a base which is overlaid with a recording layer made of a metal, semimetal or semiconductor containing at least hydrogen.Type: GrantFiled: October 6, 1981Date of Patent: June 14, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Masatoshi Tabei, Minoru Wada, Yonosuke Takahashi, Satoshi Yoshida