Patents by Inventor Yukihisa Hayashi

Yukihisa Hayashi 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).

  • Toner container and developing device with the same toner container assembled therein
    Patent number: 5686985
    Abstract: The invention is applicable to a developing device with a toner hopper as toner container, which can be mounted and dismounted and includes a toner replenishment roller controlled for rotation according to a detection signal of a toner concentration sensor. A shutter capable of being rotated along the outer periphery of the toner replenishment roller, is provided for opening and closing an opening at predetermined angular positions. At least one shutter opening end is in frictional contact with roller periphery, thus permitting stable mounting and dismounting of the toner container with respect to a developer container in a simple operation.Further, in a toner container comprising a replenishment toner accommodating section and a waste toner recovery section formed at a longitudinal end of the accommodating section via a partitioning wall, the volume ratio between the replenishment toner accommodating section and the waste toner recovery section is set such that no overflow of waste toner occurs.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 11, 1997
    Assignee: Kyocera Corporation
    Inventor: Yukihisa Hayashi
  • Toner container
    Patent number: D442214
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: May 15, 2001
    Assignee: Kyocera Corporation
    Inventor: Yukihisa Hayashi
  • Toner cartridge for computer printer
    Patent number: D379829
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: June 10, 1997
    Assignee: Kyocera Corporation
    Inventor: Yukihisa Hayashi