Patents by Inventor Hideaki Hoki
Hideaki Hoki 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: 9352585Abstract: The object is to provide a thermal print head capable of improving printing quality on a medium. The Solution is to provide a base member 11 including a recess 113a, a heat storage region 2 formed in the recess 113a, a resistor layer 4 formed on the base member 11, and an electrode layer 3 formed on the base member 11 and electrically connected to the resistor layer 4. The resistor layer 4 includes a heating portion 41 spanned between two portions of the electrode layer 3 spaced from each other as viewed in a thickness direction Z of the base member 11. The heating portion 41 is located so as to overlap the recess 113a as viewed in the thickness direction Z. The base member 11 is made of a material having a thermal conductivity of 100 to 300 W/(m·K).Type: GrantFiled: December 28, 2015Date of Patent: May 31, 2016Assignee: ROHM CO., LTD.Inventors: Hideaki Hoki, Tomohiko Horikawa, Shinobu Obata, Tomoharu Horio, Minoru Sakamoto
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Publication number: 20160107452Abstract: The object is to provide a thermal print head capable of improving printing quality on a medium. The Solution is to provide a base member 11 including a recess 113a, a heat storage region 2 formed in the recess 113a, a resistor layer 4 formed on the base member 11, and an electrode layer 3 formed on the base member 11 and electrically connected to the resistor layer 4. The resistor layer 4 includes a heating portion 41 spanned between two portions of the electrode layer 3 spaced from each other as viewed in a thickness direction Z of the base member 11. The heating portion 41 is located so as to overlap the recess 113a as viewed in the thickness direction Z. The base member 11 is made of a material having a thermal conductivity of 100 to 300 W/(m·K).Type: ApplicationFiled: December 28, 2015Publication date: April 21, 2016Inventors: Hideaki HOKI, Tomohiko HORIKAWA, Shinobu OBATA, Tomoharu HORIO, Minoru SAKAMOTO
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Patent number: 9254650Abstract: A thermal printhead includes a substrate, a resistor layer formed on the substrate, an electrode layer formed on the substrate and electrically connected to the resistor layer, and an insulating layer. The electrode layer includes a first electrically conductive portion and a second electrically conductive portion spaced apart from each other. The resistor layer includes a heater portion that bridges the first electrically conductive portion and the second electrically conductive portion as viewed in the thickness direction of the substrate. The insulating layer includes a portion positioned between the electrode layer and the heater portion. This arrangement reduces formation of a eutectic region between the heater portion and the electrode layer.Type: GrantFiled: April 25, 2013Date of Patent: February 9, 2016Assignee: ROHM CO., LTD.Inventors: Tomohiko Horikawa, Hideaki Hoki
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Patent number: 9248663Abstract: The object is to provide a thermal print head capable of improving printing quality on a medium. The Solution is to provide a base member 11 including a recess 113a, a heat storage region 2 formed in the recess 113a, a resistor layer 4 formed on the base member 11, and an electrode layer 3 formed on the base member 11 and electrically connected to the resistor layer 4. The resistor layer 4 includes a heating portion 41 spanned between two portions of the electrode layer 3 spaced from each other as viewed in a thickness direction Z of the base member 11. The heating portion 41 is located so as to overlap the recess 113a as viewed in the thickness direction Z. The base member 11 is made of a material having a thermal conductivity of 100 to 300 W/(m·K).Type: GrantFiled: August 27, 2013Date of Patent: February 2, 2016Assignee: ROHM CO., LTD.Inventors: Hideaki Hoki, Tomohiko Horikawa, Shinobu Obata, Tomoharu Horio, Minoru Sakamoto
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Publication number: 20150251440Abstract: The object is to provide a thermal print head capable of improving printing quality on a medium. The Solution is to provide a base member 11 including a recess 113a, a heat storage region 2 formed in the recess 113a, a resistor layer 4 formed on the base member 11, and an electrode layer 3 formed on the base member 11 and electrically connected to the resistor layer 4. The resistor layer 4 includes a heating portion 41 spanned between two portions of the electrode layer 3 spaced from each other as viewed in a thickness direction Z of the base member 11. The heating portion 41 is located so as to overlap the recess 113a as viewed in the thickness direction Z. The base member 11 is made of a material having a thermal conductivity of 100 to 300 W/(m·K). Selected Figure is FIG. 6.Type: ApplicationFiled: August 27, 2013Publication date: September 10, 2015Inventors: Hideaki Hoki, Tomohiko Horikawa, Shinobu Obata, Tomoharu Horio, Minoru Sakamoto
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Patent number: 6558024Abstract: A method of making a casing of an image sensor is provided. The method includes the steps of preparing the casing, and applying a static electricity preventive to the casing. The casing is formed with a light passage configured to conduct light emitted from a light source. The static electricity preventive is applied to the inner surfaces of the casing defining the light passage. While the application of the preventive is performed, flashes formed at the light passage are removed.Type: GrantFiled: November 29, 2000Date of Patent: May 6, 2003Assignee: Rohm Co., Ltd.Inventors: Hideaki Hoki, Hiroaki Hayashi, Hiromi Ogata, Kunio Motoyama
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Publication number: 20010002168Abstract: A method of making a casing of an image sensor is provided. The method includes the steps of preparing the casing, and applying a static electricity preventive to the casing. The casing is formed with a light passage configured to conduct light emitted from a light source. The static electricity preventive is applied to the inner surfaces of the casing defining the light passage. While the application of the preventive is performed, flashes formed at the light passage are removed.Type: ApplicationFiled: November 29, 2000Publication date: May 31, 2001Inventors: Hideaki Hoki, Hiroaki Hayashi, Hiromi Ogata, Kunio Motoyama
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Patent number: 5847744Abstract: A thin-film type thermal print head has a resistor layer formed over an insulative substrate, a conductor layer having a specified planar pattern overlapping the resistor layer, a portion of the resistor layer serving as a heat-emitting part which is not covered by the conductor layer, and a protective layer formed over the heat-emitting part and at least a portion of the conductor layer adjacent to the heat-emitting part. The protective layer may be formed as a conductive layer with resistance greater than that of the heat-emitting part such that static electricity which may be generated by the friction with printing paper can quickly escape to the conductor layer. The protective layer may also include a wear-resisting layer of a prior art type between the conductive layer and the conductor layer, a portion of the conductive layer being preferably connected to the conductor layer. The conductive layer is preferably a mixed layer of SiC and ZrB.sub.2 containing ZrB.sub.Type: GrantFiled: February 7, 1996Date of Patent: December 8, 1998Assignee: Rohm Co., Ltd.Inventors: Hideaki Hoki, Toshihiko Takakura, Haruhiko Yamashita, Kunio Motoyama, Mitsuhiko Fukuda, Yasuzo Matsuo
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Patent number: 5680170Abstract: A thermal printhead according to the present invention includes an insulating head substrate (8) having an obverse surface (8a), a reverse surface (8b), a first longitudinal edge surface (8c) and a second longitudinal edge surface (8d). The surface (8a) of the head substrate (8) is formed with an array of heating dots (10a) along the first longitudinal edge surface (8c), a common electrode pattern (11) electrically connected to the array of heating dots (10a) adjacent to the first longitudinal edge surface (8c) and individual electrodes (12) extending away from the common electrode pattern (11) and being electrically connected to the respective heating dots (10a). The heating dots (10a) are selectively heated by drive elements. The common electrode pattern (11) is electrically connected to an auxiliary electrode layer (14) which covers at least the first longitudinal edge surface (8c), reverse surface (8b) and second longitudinal edge surface (8d) of the heat substrate (8).Type: GrantFiled: January 16, 1996Date of Patent: October 21, 1997Assignee: Rohm Co. Ltd.Inventors: Hideo Taniguchi, Toshihiko Takakura, Hideaki Hoki, Masatoshi Nakanishi