Patents by Inventor Kentaro TATSUMI

Kentaro TATSUMI 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: 9434184
    Abstract: A paper feed device is disposed near an opening formed on a housing of for an image forming apparatus. The paper feed device includes a paper feed tray on which papers can be stacked, upper and lower guide plates disposed on a downstream side from the opening to form a paper transfer path therebetween, a drive shaft extended along a paper width direction perpendicular to the paper transfer direction, a paper feed roller attached to the drive shaft for feeding out a paper from the paper feed tray to the paper feed path, and a pair of elastic rollers coaxially attached to the drive shaft on either side of the paper feed roller. The pair of elastic rollers covers a space between the upper and lower guide plates. Each diameter of the elastic rollers is made slightly smaller than a diameter of the paper feed roller.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: September 6, 2016
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Teruaki Hashizume, Kentaro Tatsumi
  • Publication number: 20160214407
    Abstract: A paper feed device is disposed near an opening formed on a housing of for an image forming apparatus. The paper feed device includes a paper feed tray on which papers can be stacked, upper and lower guide plates disposed on a downstream side from the opening to form a paper transfer path therebetween, a drive shaft extended along a paper width direction perpendicular to the paper transfer direction, a paper feed roller attached to the drive shaft for feeding out a paper from the paper feed tray to the paper feed path, and a pair of elastic rollers coaxially attached to the drive shaft on either side of the paper feed roller. The pair of elastic rollers covers a space between the upper and lower guide plates. Each diameter of the elastic rollers is made slightly smaller than a diameter of the paper feed roller.
    Type: Application
    Filed: January 20, 2016
    Publication date: July 28, 2016
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Teruaki HASHIZUME, Kentaro TATSUMI
  • Patent number: 8454121
    Abstract: A liquid ejecting apparatus including a liquid ejecting head which ejects liquid through nozzles, a liquid container with a sloped bottom surface which receives the liquid ejected from the nozzles, an absorber disposed in the liquid container which absorbs and stores the liquid ejected from the nozzles, and a suction unit which sucks the liquid held by the absorber and discharges the liquid from the liquid container. The liquid container includes a restriction portion which restricts the flow of the liquid in the absorber due to gravity, forming collection portions in the absorber where the liquid may be collected at a plurality of positions with different elevations when the liquid container is rotated so that the bottom surface is sloped away from the horizontal plane.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: June 4, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Taisuke Yamamoto, Kentaro Tatsumi
  • Publication number: 20090201336
    Abstract: A liquid ejecting apparatus including a liquid ejecting head which ejects liquid through nozzles, a liquid container with a sloped bottom surface which receives the liquid ejected from the nozzles, an absorber disposed in the liquid container which absorbs and stores the liquid ejected from the nozzles, and a suction unit which sucks the liquid held by the absorber and discharges the liquid from the liquid container. The liquid container includes a restriction portion which restricts the flow of the liquid in the absorber due to gravity, forming collection portions in the absorber where the liquid may be collected at a plurality of positions with different elevations when the liquid container is rotated so that the bottom surface is sloped away from the horizontal plane.
    Type: Application
    Filed: August 13, 2008
    Publication date: August 13, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taisuke YAMAMOTO, Kentaro TATSUMI