Patents by Inventor Saburo Furukawa

Saburo Furukawa 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: 7463859
    Abstract: A transfer device includes a pair of transfer frames, a belt member, a pair of transfer roller levers which are respectively arranged on inner sides of the transfer frames pivotably, a transfer roller which is provided between first ends of the transfer roller levers rotatably, a pair of first urging members, which are respectively provided on second ends of the transfer roller levers to energize the transfer roller toward the belt member, and a pair of transfer pressure controlling members which are respectively provided on the transfer frames movably to control urging power of the first urging members.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: December 9, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Ito, Hiroshi Ue, Saburo Furukawa, Shigeo Fujita, Toshihiko Yamazaki, Tatsuro Osawa
  • Publication number: 20070003299
    Abstract: A transfer device includes a pair of transfer frames, a belt member, a pair of transfer roller levers which are respectively arranged on inner sides of the transfer frames pivotably, a transfer roller which is provided between first ends of the transfer roller levers rotatably, a pair of first urging members, which are respectively provided on second ends of the transfer roller levers to energize the transfer roller toward the belt member and a pair of transfer pressure controlling members which are respectively provided on the transfer frames movably to control urging power of the first urging members.
    Type: Application
    Filed: September 12, 2006
    Publication date: January 4, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hiroshi Ito, Hiroshi Ue, Saburo Furukawa, Shigeo Fujita, Toshihiko Yamazaki, Tatsuro Osawa
  • Patent number: 7133631
    Abstract: A transfer device includes a pair of transfer frames, a belt member, a pair of transfer roller levers which are respectively arranged on inner sides of the transfer frames pivotably, a transfer roller which is provided between first ends of the transfer roller levers rotatably, a pair of first urging members, which are respectively provided on second ends of the transfer roller levers to energize the transfer roller toward the belt member, and a pair of transfer pressure controlling members which are respectively provided on the transfer frames movably to control urging power of the first urging members.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: November 7, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Ito, Hiroshi Ue, Saburo Furukawa, Shigeo Fujita, Toshihiko Yamazaki, Tatsuro Osawa
  • Publication number: 20050019066
    Abstract: A transfer device includes a pair of transfer frames, a belt member, a pair of transfer roller levers which are respectively arranged on inner sides of the transfer frames pivotably, a transfer roller which is provided between first ends of the transfer roller levers rotatably, a pair of first urging members, which are respectively provided on second ends of the transfer roller levers to energize the transfer roller toward the belt member, and a pair of transfer pressure controlling members which are respectively provided on the transfer frames movably to control urging power of the first urging members.
    Type: Application
    Filed: June 3, 2004
    Publication date: January 27, 2005
    Inventors: Hiroshi Ito, Hiroshi Ue, Saburo Furukawa, Shigeo Fujita, Toshihiko Yamazaki, Tatsuro Osawa
  • Patent number: 6081680
    Abstract: An image support apparatus including a pair of rotatable disk shaped members, a cylindrical member supported and fixed at both ends by the pair of disk shaped members, a flexible image supporter shaped like a thin cylinder and formed with a photosensitive layer at the outer peripheral surface, support members being disposed on an outer peripheral surface of the cylindrical member for supporting the image supporter, a charge roller abutting the outer peripheral surface of the image supporter for uniformly charging the outer peripheral surface, and a frame. A distance between a portion of the image supporter supported by the support member and an end of the charge roller is set to a length to prevent the image supporter, which is bent as the charge roller abuts the image supporter, from becoming permanently deformed.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: June 27, 2000
    Assignee: Seiko Epson Corporation
    Inventors: Yujiro Nomura, Saburo Furukawa, Kaneo Yoda, Kuniaki Tanaka
  • Patent number: 5937244
    Abstract: An image carrier device which includes a flexible cylindrical thin image carrier, a support member for supporting both ends of the image carrier and a cylindrical member having an outer diameter smaller than an inner diameter of the image carrier. The cylindrical member is disposed inside of the image carrier, wherein the cylindrical member is disposed at an interval between an outer peripheral surface of the cylindrical member and an inner peripheral surface of the image carrier, such that the interval is smaller than the allowable deformation of the image carrier.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: August 10, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Kaneo Yoda, Nobumasa Abe, Yujiro Nomura, Saburo Furukawa, Kuniaki Tanaka
  • Patent number: 5893019
    Abstract: In a fusing device having first to third rollers, the first and second rollers are forcibly driven so that a peripheral speed of the third roller is higher than of the first roller. Further, a movable guide is set so as to change the number of nip portions through which a recording medium passes.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: April 6, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Kaneo Yoda, Hiroshi Tanaka, Kenjiro Yoshioka, Saburo Furukawa
  • Patent number: 5313248
    Abstract: An image formation apparatus is provided having a continuous form photosensitive member positioned to move along a pre-defined transfer path. An image is exposed on to a portion of the photosensitive member along the transfer path. A heat developer heats the exposed image portion and intercepts the heat to an unexposed portion of the photosensitive member. The heat developer has a cylindrical housing having a heated portion arranged along a longitudinal axis of the cylindrical housing and a heating element in surface contact with and for heating exposed portions of the photosensitive member. The cylindrical housing also has an unheated portion arranged along the longitudinal axis of the cylindrical housing and separated from the heated portion by a thermally insulative material.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: May 17, 1994
    Assignee: Seiko Epson Corporation
    Inventors: Yasuhiro Mita, Atsushi Kobayashi, Nobumasa Abe, Takashi Suzuki, Kazutoshi Fujisawa, Eiji Kumai, Saburo Furukawa
  • Patent number: 4464424
    Abstract: A method for preparing a concrete joint sealant plate, comprising the steps of impregnating asphalt emulsion into fibrous plate under a reduced pressure and then drying it by means of a heating presser; and a concrete joint sealant plate produced therefrom.
    Type: Grant
    Filed: December 22, 1981
    Date of Patent: August 7, 1984
    Assignee: Aoi Chemical, Inc.
    Inventors: Hazime Niwa, Saburo Furukawa