Patents by Inventor Hiroshi Tamemasa

Hiroshi Tamemasa 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).

  • Patent number: 8107869
    Abstract: The fixing device is provided with: a fixing member that includes a metal layer; a pressure member that forms a pressure portion between the pressure member and the fixing member, and that is driven to rotate; an electromagnetic induction heating member that causes the metal layer of the fixing member to generate heat; and a heater that is disposed so as to face the electromagnetic induction heating member through the fixing member and so as to be in contact with an inner side of the fixing member, and that is caused to generate heat by a magnetic field. A heat transfer lubricant is provided between the fixing member and the heater disposed on the inner side of the fixing member.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: January 31, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Hiroshi Tamemasa
  • Publication number: 20100329754
    Abstract: The invention provides an image fixing device containing a tubular formed first rotating body rotatable in a circumferential direction, a second rotating body that is arranged so that an outer circumferential surface of the second rotating body is in contact with an outer circumferential surface of the first rotating body, a heating unit that heats the first rotating body; and a heating auxiliary member that is arranged to be in contact with an inner circumferential surface of the first rotating body, at least a surface of the heating auxiliary member that is in contact with the inner circumferential surface of the first rotating body being made of a porous metal.
    Type: Application
    Filed: December 1, 2009
    Publication date: December 30, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Hiroshi TAMEMASA
  • Patent number: 7835679
    Abstract: A heating device has a magnetic field generating unit generating a magnetic field, a heat generating layer, and a heating/rotating unit. The heat generating layer is disposed so as to oppose the magnetic field generating unit, and is at least electromagnetically induced by the magnetic field to generate heat. The heating/rotating unit includes a supporting layer which supports the heat generating layer, and has n (n?2) metal layers.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: November 16, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Motofumi Baba, Hiroshi Tamemasa
  • Publication number: 20100196065
    Abstract: The endless belt is provided with: a metal layer that includes at least one layer, that is cylindrically formed, and that has not more than 10 degrees as a half width of a diffraction peak in X-ray diffraction; and a release layer that is stacked on the metal layer.
    Type: Application
    Filed: September 8, 2009
    Publication date: August 5, 2010
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Keiko MATSUKI, Hiroshi TAMEMASA
  • Publication number: 20100196066
    Abstract: The fixing device is provided with: a fixing member that includes a metal layer; a pressure member that forms a pressure portion between the pressure member and the fixing member, and that is driven to rotate; an electromagnetic induction heating member that causes the metal layer of the fixing member to generate heat; and a heater that is disposed so as to face the electromagnetic induction heating member through the fixing member and so as to be in contact with an inner side of the fixing member, and that is caused to generate heat by a magnetic field. A heat transfer lubricant is provided between the fixing member and the heater disposed on the inner side of the fixing member.
    Type: Application
    Filed: September 16, 2009
    Publication date: August 5, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Hiroshi TAMEMASA
  • Patent number: 7668496
    Abstract: There is provided a laminated body including a heat generation layer that includes crystalline particles of a non-magnetic metal; and a base layer that includes a magnetic shunt alloy. There are also provided an endless belt, a fixing device and an image forming apparatus using the laminated body.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: February 23, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroshi Tamemasa, Motofumi Baba
  • Patent number: 7651778
    Abstract: There is provided a laminated body that includes a metal layer comprising an electroconductive metal layer and a metal oxide layer disposed on each side of the electroconductive metal layer; and a resin layer or an elastic layer disposed on at least one side of the metal layer. There is also provided a producing method of the laminated body. Furthermore, there is provided a fixing belt and an image forming device.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: January 26, 2010
    Assignee: Fuji Xerox, Ltd.
    Inventor: Hiroshi Tamemasa
  • Patent number: 7593681
    Abstract: A laminated body has a heat generating layer having crystal grains of a first non-magnetic metal, and a base layer containing a second non-magnetic metal that is different from the first non-magnetic metal.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: September 22, 2009
    Assignee: Fuji Xerox Co., Ltd
    Inventors: Hiroshi Tamemasa, Motofumi Baba
  • Patent number: 7515858
    Abstract: The invention provides a fluorocarbon resin-coated member which has at least a base material and a releasing layer formed thereon, wherein the releasing layer is a film obtained by sintering fluorocarbon resin particles, and the relative film density of the releasing layer is 98% or more. The invention further provides a method for manufacturing the fluorocarbon resin-mated member which at least includes coating a material containing fluorocarbon resin particles on the base material and sintering the fluorocarbon resin particles by using a hot isostatic pressing apparatus. The invention further provides a fixing device and an image forming apparatus having the fixing device, in which the fixing device has at least a pair of fixing units including a heating member and a pressurizing member. At least one of the heating member and the pressurizing member has the base material and the releasing layer.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: April 7, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Hiroshi Tamemasa
  • Patent number: 7510744
    Abstract: A process for producing a resin composition having a high adhesion between a resin layer and a metallic layer as well as an excellent durability includes providing a porous structure at least on the surface of the resin layer; and forming the metallic layer on the surface of the resin layer.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: March 31, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroshi Tamemasa, Makoto Omata, Shigeo Ohta, Takahiro Okayasu
  • Publication number: 20080205948
    Abstract: A heating device has a magnetic field generating unit generating a magnetic field, a heat generating layer, and a heating/rotating unit. The heat generating layer is disposed so as to oppose the magnetic field generating unit, and is at least electromagnetically induced by the magnetic field to generate heat. The heating/rotating unit includes a supporting layer which supports the heat generating layer, and has n (n?2) metal layers.
    Type: Application
    Filed: August 3, 2007
    Publication date: August 28, 2008
    Inventors: Motofumi Baba, Hiroshi Tamemasa
  • Publication number: 20080152402
    Abstract: There is provided a laminated body including a heat generation layer that includes crystalline particles of a non-magnetic metal; and a base layer that includes a magnetic shunt alloy. There are also provided an endless belt, a fixing device and an image forming apparatus using the laminated body.
    Type: Application
    Filed: May 29, 2007
    Publication date: June 26, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hiroshi Tamemasa, Motofumi Baba
  • Publication number: 20080145116
    Abstract: According to the invention, there is provided a laminated body comprising a heat generating layer having crystal grains of a first non-magnetic metal, and a base layer containing a second non-magnetic metal that is different from the first non-magnetic metal.
    Type: Application
    Filed: May 22, 2007
    Publication date: June 19, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hiroshi Tamemasa, Motofumi Baba
  • Publication number: 20080057335
    Abstract: There is provided a laminated body that includes a metal layer comprising an electroconductive metal layer and a metal oxide layer disposed on each side of the electroconductive metal layer; and a resin layer or an elastic layer disposed on at least one side of the metal layer. There is also provided a producing method of the laminated body. Furthermore, there is provided a fixing belt and an image forming device.
    Type: Application
    Filed: April 5, 2007
    Publication date: March 6, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Hiroshi Tamemasa
  • Publication number: 20070048046
    Abstract: The invention provides a fluorocarbon resin-coated member which has at least a base material and a releasing layer formed thereon, wherein the releasing layer is a film obtained by sintering fluorocarbon resin particles, and the relative film density of the releasing layer is 98% or more. The invention fiher provides a method for manuf-cing the fluorocarbon resin-mated member which at least includes coating a material containing fluorocarbon resin particles on the base material and sintering the fluorocarbon resin particles by using a hot isostatic pressing apparatus. The invention finer provides a fixing device and an image forming apparatus having the fixing device, in which the fixing device has at least a pair of fixing units including a heating member and a pressurizing member. At least one of the heating member and the pressurizing member has the base material and the releasing layer.
    Type: Application
    Filed: December 5, 2005
    Publication date: March 1, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Hiroshi Tamemasa
  • Patent number: 7133634
    Abstract: A circulating body driven with its surface being circulated along a fixed route and having a base material provided with a tubular outside peripheral surface and a surface layer covering the outside peripheral surface of the base material, the surface static friction coefficient of the surface layer is designed to be 0.06 or less with common paper at 100° C.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: November 7, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hitoshi Komuro, Hiroshi Tamemasa, Yousuke Tsutsumi, Kenji Nakatogawa, Kei Inamura
  • Patent number: 7060349
    Abstract: A resin composition having a high adhesion between a resin layer and a metallic layer as well as an excellent durability, a process for producing the same, and an electrophotographic fixing member are provided. In the resin composition, a metallic layer is provided on a surface of a resin layer having a porous structure at least on the surface.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: June 13, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroshi Tamemasa, Makoto Omata, Shigeo Ohta, Takahiro Okayasu
  • Publication number: 20050189628
    Abstract: A resin composition having a high adhesion between a resin layer and a metallic layer as well as an excellent durability, a process for producing the same, and an electrophotographic fixing member are provided. In the resin composition, a metallic layer is provided on a surface of a resin layer having a porous structure at least on the surface.
    Type: Application
    Filed: May 4, 2005
    Publication date: September 1, 2005
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Hiroshi Tamemasa, Makoto Omata, Shigeo Ohta, Takahiro Okayasu
  • Publication number: 20050013639
    Abstract: In a circulating body driven with its surface being circulated along a fixed route and comprising a base material having a tubular outside peripheral surface and a surface layer covering the outside peripheral surface of the base material, the surface static friction coefficient of the surface layer is designed to be 0.06 or less with common paper at 100° C.
    Type: Application
    Filed: February 23, 2004
    Publication date: January 20, 2005
    Inventors: Hitoshi Komuro, Hiroshi Tamemasa, Yousuke Tsutsumi, Kenji Nakatogawa, Kei Inamura
  • Publication number: 20040058143
    Abstract: A resin composition having a high adhesion between a resin layer and a metallic layer as well as an excellent durability, a process for producing the same, and an electrophotographic fixing member are provided. In the resin composition, a metallic layer is provided on a surface of a resin layer having a porous structure at least on the surface.
    Type: Application
    Filed: September 24, 2002
    Publication date: March 25, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Hiroshi Tamemasa, Makoto Omata, Shigeo Ohta, Takahiro Okayasu