Patents by Inventor Takao Umehara

Takao Umehara 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).

  • Waste toner collecting device and image forming apparatus provided with the same
    Patent number: 7904014
    Abstract: A waste toner collecting device comprising: a waste toner removing section that removes a toner which is adhered on a surface of a member to be cleaned, as waste toner; a waste toner storing section that stores the waste toner; and a waste toner transporting section that transports the waste toner to the waste toner storing section, wherein the waste toner transporting section includes a waste toner transporting path, a rotatable shaft arranged in the waste toner transporting path, a transport screw that is arranged at an outer periphery of the shaft in the waste toner transporting path and that has one end in a longitudinal direction coupled to the shaft, and a driving section that is coupled to the other end of the transport screw in the longitudinal direction so as to transmit a rotational force or that is coupled to the shaft so as to transmit a rotational force while rotatably supporting the other end of the transport screw.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: March 8, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takao Umehara, Takashi Kubo
  • WASTE TONER COLLECTING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME
    Publication number: 20090016793
    Abstract: A waste toner collecting device comprising: a waste toner removing section that removes a toner which is adhered on a surface of a member to be cleaned, as waste toner; a waste toner storing section that stores the waste toner; and a waste toner transporting section that transports the waste toner to the waste toner storing section, wherein the waste toner transporting section includes a waste toner transporting path, a rotatable shaft arranged in the waste toner transporting path, a transport screw that is arranged at an outer periphery of the shaft in the waste toner transporting path and that has one end in a longitudinal direction coupled to the shaft, and a driving section that is coupled to the other end of the transport screw in the longitudinal direction so as to transmit a rotational force or that is coupled to the shaft so as to transmit a rotational force while rotatably supporting the other end of the transport screw.
    Type: Application
    Filed: July 1, 2008
    Publication date: January 15, 2009
    Inventors: Takao Umehara, Takashi Kubo