Patents by Inventor Hiroyuki Kageyama

Hiroyuki Kageyama 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).

  • Publication number: 20090263170
    Abstract: A fixing device includes a fixing belt for fixing an unfixed toner image onto a recording medium, a planar heating member for heating the fixing belt, and a pressure roller. The heating member includes a ceramic heat generating element having a PTC characteristic, and a high-thermal-conductive heat diffusion member. The fixing belt is formed in an endless shape and is supported around, at least, the high-thermal-conductive heat diffusion member, thereby to be heated. The ceramic heat generating element comes into contact with the fixing belt over the full width thereof with the high-thermal-conductive heat diffusion member interposed therebetween. The high-thermal-conductive heat diffusion member comes into contact with the fixing belt over the full width thereof and diffuses heat generated by the heat generating element, in the traveling direction of the fixing belt.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 22, 2009
    Inventors: Toshiaki Kagawa, Hiroyuki Kageyama
  • Publication number: 20090257795
    Abstract: A fixing device is provided that suppresses loss in heat radiation from both ends in a longitudinal direction which is a direction corresponding to an axial direction of a fixing roller in a heating member so as to be able to uniform distribution of a temperature in the longitudinal direction of the heating member and to attain uniform fixing capability. A planar heat generating element provided in a heating member includes electrodes at both ends in a circumferential direction so that a flowing direction of current flowing through the planar heat generating element is a direction substantially orthogonal to a longitudinal direction as a direction extending along an axial direction of a fixing roller in the planar heat generating element. The planar heat generating element is constituted so that the both ends in the longitudinal direction thereof have larger thickness than that of a center part thereof.
    Type: Application
    Filed: April 14, 2009
    Publication date: October 15, 2009
    Inventor: Hiroyuki Kageyama
  • Patent number: 7536147
    Abstract: A cleaning device of the present invention includes (i) a blade, which has an edge portion to be pressed against a surface of a photoreceptor, so as to scrape toner and (ii) a brush roller, which has bristle whose ends make contact with the surface of the photoreceptor, so as to supply fine particles of a scraped lubricant agent to the surface of the photoreceptor, the blade having a rebound resilience of 10% to 45% and a Young's modulus of 5 MPa to 11 MPa. With this, even when small-particle toner with no corner is used, it is possible to (a) improve a cleaning property while allowing a photoreceptor to have a long life span and without degrading the original electrophotographic performance of the photoreceptor and (b) charge the photoreceptor uniformly.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: May 19, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hiroyuki Kageyama
  • Publication number: 20080253000
    Abstract: A vehicle lamp includes a lens formed from a resin material and a lens holding member for holding the lens formed from the resin material. The lens and the lens holding member are adapted to be joined together through laser welding. A joining annular portion is provided on the lens holding member to which an outer circumferential portion of the lens is joined. A plurality of welding portions and a plurality of stopper portions are provided on the joining annular portion. The plurality of welding portions project towards the lens and are positioned apart from each other in a circumferential direction. The plurality of stopper portions project towards the lens, are positioned apart from each other in the circumferential direction, and contact the outer circumferential portion of the lens when the lens is joined to the joining annular portion.
    Type: Application
    Filed: April 11, 2008
    Publication date: October 16, 2008
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Chiharu Matsunaga, Hiroyuki Kageyama, Tetsuaki Inaba
  • Publication number: 20080198555
    Abstract: The present invention provides a semiconductor device comprising a semiconductor element, a single-layer wiring board on which the semiconductor element is mounted, a connector section located at an end of the single-layer wiring board, a thermally and electrically conductive radiator plate, a relay electrode section formed on the single-layer wiring board, and a connecting member that electrically connects the radiator plate and the relay electrode section together. The single-layer wiring board is structured so that a power supply potential and/or a ground potential received by the connector section is transmitted through a path comprising the radiator plate, the relay electrode section, and the connecting member to the semiconductor element.
    Type: Application
    Filed: November 1, 2007
    Publication date: August 21, 2008
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenji YAMASHITA, Hiroyuki Kageyama, Seiichi Moriyama
  • Publication number: 20070229482
    Abstract: A memory access switchover circuit relays a data access to the image memory by a writing control circuit and a data access to the image memory by the display control circuit. A blanking period change control circuit extends the blanking period in a display frame at timing of reception of start of the writing operation upon receiving the start of the writing operation to the image memory by the wiring control circuit. The writing control circuit outputs a request for writing the image data to the memory access switchover circuit upon receiving the input of the image data. The memory access switchover circuit switches from the data access by the display control circuit to the data access by the writing control circuit when the request for writing is received.
    Type: Application
    Filed: April 4, 2007
    Publication date: October 4, 2007
    Inventors: Hiroyuki Morinaga, Hiroyuki Kageyama, Tsutomu Sakakibara, Tatuo Itoman, Naoto Osaka
  • Publication number: 20070222710
    Abstract: A first latch circuit temporarily memorizes a display pixel data by one line. A second latch circuit temporarily memorizes the display pixel data as a preceding display pixel data that precedes the display pixel data by one line. The load judging circuit judges a transition state of the display pixel data based on the display pixel data and the preceding display pixel data and predicts a drive load capacity CL based on a result of the judgment. A drivability adjusting circuit adjusts a signal level of the display pixel data based on a result of the prediction of the drive load capacity CL and adjusts drivability of an output.
    Type: Application
    Filed: March 27, 2007
    Publication date: September 27, 2007
    Inventors: Seiichi Moriyama, Hiroyuki Kageyama, Mamoru Seike, Jyunichi Suenaga
  • Patent number: 7271808
    Abstract: When a contention is detected between a memory write address and a display read address in a memory circuit which stores display data, a host retry pulse generating circuit generates a display read signal and a display line data transfer signal based on a memory write clock, and supplies these to the memory circuit while supplying the display line data transfer signal to a line latch circuit. Alternatively, upon detection of the contention above, a same line re-display read processing circuit performs same line re-display read processing without moving to the next line, and supplies a display read signal and a display line data transfer signal to the memory circuit while supplying the display line data transfer signal to the line latch circuit.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: September 18, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiichi Moriyama, Naoto Osaka, Takashi Koizumi, Hiroyuki Kageyama, Hiroyuki Morinaga, Noriko Kaku, Yumiko Kataoka
  • Publication number: 20070134035
    Abstract: A cleaning device of the present invention includes (i) a blade, which has an edge portion to be pressed against a surface of a photoreceptor, so as to scrape toner and (ii) a brush roller, which has bristle whose ends make contact with the surface of the photoreceptor, so as to supply fine particles of a scraped lubricant agent to the surface of the photoreceptor, the blade having a rebound resilience of 10% to 45% and a Young's modulus of 5 MPa to 11 MPa. With this, even when small-particle toner with no corner is used, it is possible to (a) improve a cleaning property while allowing a photoreceptor to have a long life span and without degrading the original electrophotographic performance of the photoreceptor and (b) charge the photoreceptor uniformly.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 14, 2007
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Hiroyuki Kageyama
  • Publication number: 20070122218
    Abstract: A cleaning device and a blade which is provided in the cleaning device and which has an edge portion to be pressed against a surface of a photoreceptor, so as to scrape toner are arranged so that: the blade includes (a) a blade main body constituting a main body portion of the blade and (b) a fluorocarbon resin layer formed in an edge portion, which is to make contact with the photoreceptor, of the blade main body, the fluorocarbon resin layer being made of a resin material, the resin material being filled in irregularities of a smooth surface of the blade main body. With this, even when the cleaning device is provided in a high-speed machine using small-particle toner with no corner, it is possible to extend the life of the photoreceptor without reducing a cleaning property.
    Type: Application
    Filed: November 21, 2006
    Publication date: May 31, 2007
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Hiroyuki Kageyama
  • Publication number: 20040217963
    Abstract: When a contention is detected between a memory write address and a display read address in a memory circuit which stores display data, a host retry pulse generating circuit generates a display read signal and a display line data transfer signal based on a memory write clock, and supplies these to the memory circuit while supplying the display line data transfer signal to a line latch circuit. Alternatively, upon detection of the contention above, a same line re-display read processing circuit performs same line re-display read processing without moving to the next line, and supplies a display read signal and a display line data transfer signal to the memory circuit while supplying the display line data transfer signal to the line latch circuit.
    Type: Application
    Filed: April 28, 2004
    Publication date: November 4, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Seiichi Moriyama, Naoto Osaka, Takashi Koizumi, Hiroyuki Kageyama, Hiroyuki Morinaga, Noriko Kaku, Yumiko Kataoka
  • Patent number: 6720111
    Abstract: The present invention provides a single-phase lithium ferrite based oxide which is suitable as a cathode material for a secondary battery, a process for preparing the oxide, and its uses, the oxide having a layered rock salt-type structure and comprising lithium ferrite (LiFeO2)−Li2-xMO3-y solid solution wherein M is at least one species selected from the group consisting of Mn, Ti and Sn, 0≦x<2, 0≦y≦1 such that the proportion of iron is 0.1≦Fe/(Fe+M)≦0.9.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 13, 2004
    Assignee: Secretary, Agency of Industrial Science and Technology
    Inventors: Mitsuharu Tabuchi, Kazuaki Ado, Hironori Kobayashi, Hikari Sakaebe, Hiroyuki Kageyama
  • Patent number: 6596255
    Abstract: Tin-containing granular magnetic oxide particles comprising spinel-type crystal represented by the formula: Fe3-xSnxO4 wherein x is 0.14 to 0.48, and having a Fe2+ content of 17 to 22% by weight, a lattice constant of 8.41 to 8.49 Å, a magnetization value of 20 to 50 Am2/kg when measured under an applied magnetic field of 79.6 kA/m, and a depth of a groove of not more than 40 &mgr;m at which three or more continuous lines each having a length of not less than 10 mm are developed in a pigment dispersion test using a grind-meter when measured by Hoover's muller method according to JIS K5101 (1991) 9.1. The tin-containing granular magnetic oxide particles of the present invention exhibit a sufficient blackness, a small magnetization value and an excellent dispersibility.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: July 22, 2003
    Assignees: National Institute of Advanced Industrial Science and Technology, Toda Kogyo Corporation
    Inventors: Mitsuharu Tabuchi, Tomonari Takeuchi, Hiroyuki Kageyama, Tatsuya Nakamura, Hiromitsu Misawa
  • Patent number: 6575612
    Abstract: A vehicle lamp fixture comprising a reflector that is made of a thermoplastic resin and is covered with a light reflecting film on its surface and a lens that is made of a thermoplastic resin and is mounted on the reflector. The reflector has a welding leg portion which projects from the circumferential edge of the reflector, and the tip end of the reflector welding leg portion is formed with an inclined surface which is inclined with respect to a direction in which the lens is brought to make a contact with the reflector when welding is performed between the reflector and the lens.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: June 10, 2003
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Hiroyuki Kageyama, Teruaki Inaba
  • Patent number: 6425431
    Abstract: An apparatus of welding a plurality of parts comprises a plural pairs of jigs, a plurality of heating plates, a working region, a heating-plate stocker, a heating-plate standby region, and a heating-plate slider. The pairs of jigs supports a plurality of parts, and each pair of the jigs has a shape different from another pair of jigs. The heating plates respectively correspond to each pair of the jigs. The working region is for welding the parts with the jigs and the heating plates. The heating-plate stocker stocks and heats the heating plates. The heating-plate standby region is for standing by for moving the heating plates with heating between the working region and the heating-plate stocker. A heating-plate slider is for sliding the heating plates between the heating-plate standby region and the heating-plate stocker.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: July 30, 2002
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Toshitaka Naito, Masahiko Koizumi, Tomoki Kumayama, Hiroyuki Kageyama, Fujihiko Sugiyama, Seiichi Gyotoku
  • Patent number: 6399041
    Abstract: A lithium cobalt oxide (LiCoO2) having a layered rock-salt type structure produced at low temperatures by hydrothermally treating at least one water-soluble cobalt salt in an aqueous solution containing a water-soluble lithium salt and an alkali metal hydroxide at 105 to 300° C. in the presence of an oxidizing agent. An inexpensive salt of divalent cobalt is used as a starting material in this process. The lithium cobalt oxide thus obtained is useful as a cathode material for rechargeable lithium batteries.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: June 4, 2002
    Assignee: Agency of Industrial Science & Technology
    Inventors: Kazuaki Ado, Mitsuharu Tabuchi, Hironori Kobayashi, Hiroyuki Kageyama
  • Publication number: 20020064498
    Abstract: Disclosed is a lithium-iron-manganese complex oxide having a layered rock-salt structure comprising a solid solution formed by dissolving lithium ferrite (LiFeO2) in Li2-xMnO3-y (0≦x≦2, 0≦y≦1) of a layered rock-salt structure in a homogeneous crystalline state in such a way that an iron rate satisfies the relationship of 0.2≦Fe/(Fe+Mn)≦O.75, wherein at least 10% of iron contained in said solid solution is in a tetravalent state. The lithium-iron-manganese complex oxide is useful as cathode materials for a next generation low-priced lithium-ion battery and catalyst materials.
    Type: Application
    Filed: October 9, 2001
    Publication date: May 30, 2002
    Applicant: NATIONAL INSTITUTE OF ADVANCED SCIENCE AND TECHNOLOGY
    Inventors: Mitsuharu Tabuchi, Hiroyuki Kageyama, Tatsuya Nakamura, Takayuki Yoshida, Ryoji Kanno
  • Publication number: 20020057578
    Abstract: A vehicle lamp fixture comprising a reflector that is made of a thermoplastic resin and is covered with a light reflecting film on its surface and a lens that is made of a thermoplastic resin and is mounted on the reflector. The reflector has a welding leg portion which projects from the circumferential edge of the reflector, and the tip end of the reflector welding leg portion is formed with an inclined surface which is inclined with respect to a direction in which the lens is brought to make a contact with the reflector when welding is performed between the reflector and the lens.
    Type: Application
    Filed: November 9, 2001
    Publication date: May 16, 2002
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Kageyama, Teruaki Inaba
  • Publication number: 20020045098
    Abstract: The present invention provides a single-phase lithium ferrite based oxide which is suitable as a cathode material for a secondary battery, a process for preparing the oxide, and its uses, the oxide having a layered rock salt-type structure and comprising lithium ferrite (LiFeO2)- Li2-xMO3-y solid solution wherein M is at least one species selected from the group consisting of Mn, Ti and Sn, 0≦×<2, 0 ≦y ≦1 such that the proportion of iron is 0.1≦Fe/(Fe+M)≦0.9.
    Type: Application
    Filed: December 19, 2000
    Publication date: April 18, 2002
    Inventors: Mitsuharu Tabuchi, Kazuaki Ado, Hironori Kobayashi, Hikari Sakaebe, Hiroyuki Kageyama
  • Publication number: 20020005603
    Abstract: A process for producing a sintered magnet composed of ferrite particles with magnetoplumbite structure exhibiting a large magnetic flux density and a high coercive force, at a relatively low temperature for a short period of time by filling ferrite particles with magnetoplumbite structure produced by a wet-method, in a mold; and supplying an electric current to the ferrite particles with magnetoplumbite structure filled in the mold under a pressure.
    Type: Application
    Filed: May 7, 2001
    Publication date: January 17, 2002
    Inventors: Mitsuharu Tabuchi, Tomonari Takeuchi, Hiroyuki Kageyama, Tatsuya Nakamura, Yoji Okano