Patents by Inventor Masashi Shimamura

Masashi Shimamura 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: 20060203308
    Abstract: An image reading apparatus which enables the area occupied by the apparatus to be made small and can stably transport even a thick sheet having stiffness. A sheet P contained in an inclined sheet containing portion 3 is transported to image reading portions 8 and 9 by a vertically extending first sheet transporting path R1, and an image on the sheet P is read by the image reading portions 8 and 9, and the sheet P on which the image has been read is delivered to a substantially horizontal delivery stacking portion 14 by a substantially horizontally extending second sheet transporting path R2. The image reading portion 9 is provided between the vertically extending first sheet transporting path R1 and the substantially horizontally extending second sheet transporting path R2, and in the image reading portion 9, the transport direction of the sheet P passed along the first sheet transporting path R1 is changed to a direction toward the second sheet transporting path R2.
    Type: Application
    Filed: May 8, 2006
    Publication date: September 14, 2006
    Applicant: Canon Denshi Kabushiki Kaisha
    Inventors: Masahiro Shirai, Masashi Shimamura
  • Publication number: 20050254103
    Abstract: An image reading apparatus for reading the image surface of a sheet material brought into close contact with the image reading surface of an image reading unit while passing the sheet material through an image reading gap formed between the sheet conveying surface of a sheet conveying guide and the image reading surface, including a holding member for holding the image reading unit for movement in a direction to change the width of the image reading gap, an upstream roller pair having a first roller member displaceable in accordance with the thickness of the sheet material, and for nipping and conveying the sheet material into the image reading gap, and a downstream roller pair having a second roller member displaceable in accordance with the thickness of the sheet material, and for nipping and conveying the sheet material out of the image reading gap, wherein the image reading unit changes the width of the image reading gap on the basis of the displacement of at least one of the first roller member and the s
    Type: Application
    Filed: May 2, 2005
    Publication date: November 17, 2005
    Applicant: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Kazuhide Sugiyama, Masashi Shimamura
  • Patent number: 6869070
    Abstract: A sheet feeding apparatus for separating and feeding sheets supported on a sheet supporting portion one by one is provided with a separating and feeding portion having a sheet feed roller provided downstream of the sheet supporting portion for feeding the sheets, and a separation roller brought into pressure contact with the sheet feed roller, and designed to be rotatable in the same direction as or a direction opposite to the rotational direction of the sheet feed roller, and separating and feeding the sheets one by one, and a transport restriction guide provided near the separation roller so as to protrude toward the sheet feed roller for restricting the number of sheets coming into the pressure contact portion between the sheet feed roller and the separation roller, and the transport restriction guide is formed by a flexible member, and is provided so as to be pressed by the sheets coming into between the sheet feed roller and the separation roller and be flexible toward the separation roller side, and the
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: March 22, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masashi Shimamura, Masahiro Shirai
  • Publication number: 20030160379
    Abstract: A sheet feeding apparatus for separating and feeding sheets supported on a sheet supporting portion one by one is provided with a separating and feeding portion having a sheet feed roller provided downstream of the sheet supporting portion for feeding the sheets, and a separation roller brought into pressure contact with the sheet feed roller, and designed to be rotatable in the same direction as or a direction opposite to the rotational direction of the sheet feed roller, and separating and feeding the sheets one by one, and a transport restriction guide provided near the separation roller so as to protrude toward the sheet feed roller for restricting the number of sheets coming into the pressure contact portion between the sheet feed roller and the separation roller, and the transport restriction guide is formed by a flexible member, and is provided so as to be pressed by the sheets coming into between the sheet feed roller and the separation roller and be flexible toward the separation roller side, and the
    Type: Application
    Filed: February 24, 2003
    Publication date: August 28, 2003
    Applicant: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Masashi Shimamura, Masahiro Shirai
  • Publication number: 20030063337
    Abstract: An image reading apparatus which enables the area occupied by the apparatus to be made small and can stably transport even a thick sheet having stiffness. A sheet P contained in an inclined sheet containing portion 3 is transported to image reading portions 8 and 9 by a vertically extending first sheet transporting path R1, and an image on the sheet P is read by the image reading portions 8 and 9, and the sheet P on which the image has been read is delivered to a substantially horizontal delivery stacking portion 14 by a substantially horizontally extending second sheet transporting path R2. The image reading portion 9 is provided between the vertically extending first sheet transporting path R1 and the substantially horizontally extending second sheet transporting path R2, and in the image reading portion 9, the transport direction of the sheet P passed along the first sheet transporting path R1 is changed to a direction toward the second sheet transporting path R2.
    Type: Application
    Filed: September 9, 2002
    Publication date: April 3, 2003
    Applicant: Canon Denshi Kabushiki Kaisha
    Inventors: Masahiro Shirai, Masashi Shimamura
  • Patent number: 6234470
    Abstract: A feeding rotatable member, a conveying rotatable member and a separating rotatable member are driven by a sheet feeding motor, a feeding motor and a separating motor, respectively, which are independent driving means to thereby feed an original. The separation and conveyance of the original are effected while the opening amount between the conveying rotatable member and the separating rotatable member is changed by a sheet thickness adjusting motor.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: May 22, 2001
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Katsuhiko Okitsu, Masashi Shimamura
  • Patent number: D478594
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: August 19, 2003
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Hiroyuki Ichiyoshi, Kazuaki Sakuta, Kazuhide Sugiyama, Masahiro Shirai, Masashi Shimamura, Shinobu Kato, Teruhiko Kitamura
  • Patent number: D492313
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: June 29, 2004
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Hiroyuki Ichiyoshi, Teruhiko Kitamura, Kazuhide Sugiyama, Masashi Shimamura, Jun Tanaka