Patents by Inventor Takahiro Sunohara

Takahiro Sunohara 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: 7444112
    Abstract: A medium supplying apparatus is assembled to an image forming apparatus. A medium tray supports a medium thereon, and is pivotal about a first axis and extends from the first axis. The medium tray has a guide path that extends in the first radial direction. A feeder frame has a pickup roller rotatablly mounted to the feeder frame, and is pivotal about a second axis substantially parallel to the first axis. The medium tray and the feeder frame are drivingly coupled via a link. When the medium tray pivots to its open position or closed position, the link transmits the motion of the medium tray to the feeder frame in such a way that the feeder frame drivingly pivots to its open position or closed position.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: October 28, 2008
    Assignee: Oki Data Corporation
    Inventors: Tatsuya Murakami, Takahiro Sunohara
  • Publication number: 20080128974
    Abstract: A medium supplying apparatus is assembled to an image forming apparatus. A medium tray supports a medium thereon, and is pivotal about a first axis and extends from the first axis. The medium tray has a guide path that extends in the first radial direction. A feeder frame has a pickup roller rotatablly mounted to the feeder frame, and is pivotal about a second axis substantially parallel to the first axis. The medium tray and the feeder frame are drivingly coupled via a link. When the medium tray pivots to its open position or closed position, the link transmits the motion of the medium tray to the feeder frame in such a way that the feeder frame drivingly pivots to its open position or closed position.
    Type: Application
    Filed: December 27, 2007
    Publication date: June 5, 2008
    Applicant: OKI DATA CORPORATION
    Inventors: Tatsuya Murakami, Takahiro Sunohara
  • Publication number: 20080080917
    Abstract: An image forming apparatus includes a driving roller for transporting a medium; a follower roller disposed to face the driving roller for transporting the medium; a guide member for guiding the medium to change a transport direction thereof by an angle greater than 30°; and a rotational member disposed to be freely rotatable at a position corresponding to a side edge of the medium. Accordingly, after the driving roller and the follower roller transport the medium, when the medium contacts with the guide member, side edges of the medium contact with the guide member at an angle smaller than that of a center portion of the medium contacting with the guide member.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 3, 2008
    Inventors: Satoshi Yoshimoto, Takahiro Sunohara
  • Patent number: 7349650
    Abstract: An image forming apparatus includes an image forming portion disposed in a detachable manner, an opening and closing member taking a closed position and an open position, a transfer unit disposed at the opening and closing member, as facing the image forming portion, having a belt disposed in a freely drivable manner and transferring a developer image, and a medium conveyance member for forming a conveyance route conveying a medium and for opening the conveyance route in association with movement of the opening and closing member from the closed position to the open position.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: March 25, 2008
    Assignee: Oki Data Corporation
    Inventor: Takahiro Sunohara
  • Publication number: 20080050159
    Abstract: A medium transport device includes a transport unit for transporting a medium, and a guide member disposed on a downstream side of the transport unit in a direction that the medium is transported. The guide member includes a first portion corresponding to the transport unit and a second portion having a shape different from that of the first portion.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 28, 2008
    Inventor: Takahiro Sunohara
  • Publication number: 20060083543
    Abstract: An image forming apparatus includes an image forming portion disposed in a detachable manner, an opening and closing member taking a closed position and an open position, a transfer unit disposed at the opening and closing member, as facing the image forming portion, having a belt disposed in a freely drivable manner and transferring a developer image, and a medium conveyance member for forming a conveyance route conveying a medium and for opening the conveyance route in association with movement of the opening and closing member from the closed position to the open position.
    Type: Application
    Filed: October 13, 2005
    Publication date: April 20, 2006
    Inventor: Takahiro Sunohara
  • Publication number: 20050254873
    Abstract: A medium supplying apparatus is assembled to an image forming apparatus. A medium tray supports a medium thereon, and is pivotal about a first axis and extends from the first axis. The medium tray has a guide path that extends in the first radial direction. A feeder frame has a pickup roller rotatablly mounted to the feeder frame, and is pivotal about a second axis substantially parallel to the first axis. The medium tray and the feeder frame are drivingly coupled via a link. When the medium tray pivots to its open position or closed position, the link transmits the motion of the medium tray to the feeder frame in such a way that the feeder frame drivingly pivots to its open position or closed position.
    Type: Application
    Filed: May 3, 2005
    Publication date: November 17, 2005
    Inventors: Tatsuya Murakami, Takahiro Sunohara
  • Patent number: 6950619
    Abstract: An image forming apparatus includes a transferring-and-feeding unit (103) including a transfer belt (110). The transferring-and-feeding unit (103) is supported by a support frame (115) swingable in the direction away from image forming portions (100) including photosensitive bodies (107). The fixing unit (104) includes release members (121) that bring a heat roller (117) and the pressure roller (118) to stop pressing the recording medium. As the support frame (115) swings, the transfer belt (110) separates from the photosensitive bodies (107), and the heat roller (117) and the pressure roller (118) stop pressing the recording medium, with the result that the recording medium can easily removed from the image forming apparatus.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: September 27, 2005
    Assignee: Oki Data Corporation
    Inventor: Takahiro Sunohara
  • Publication number: 20040228655
    Abstract: An image forming apparatus includes a transferring-and-feeding unit (103) including a transfer belt (110). The transferring-and-feeding unit (103) is supported by a support frame (115) swingable in the direction away from image forming portions (100) including photosensitive bodies (107). The fixing unit (104) includes release members (121) that bring a heat roller (117) and the pressure roller (118) to stop pressing the recording medium. As the support frame (115) swings, the transfer belt (110) separates from the photosensitive bodies (107), and the heat roller (117) and the pressure roller (118) stop pressing the recording medium, with the result that the recording medium can easily removed from the image forming apparatus.
    Type: Application
    Filed: May 13, 2004
    Publication date: November 18, 2004
    Inventor: Takahiro Sunohara