Patents by Inventor Hiroki Orii

Hiroki Orii 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).

  • Image forming apparatus
    Patent number: 10585366
    Abstract: Provided is an image forming apparatus including an image bearer capable of bearing a toner image, where a latent image is formed on the image bearer, a developing unit configured to develop the latent image formed on the image bearer with a toner, and a cleaning unit including a blade-shaped elastic body, where the elastic body is brought into contact with a surface of the image bearer, wherein a friction coefficient Ft/Fn between the image bearer and the elastic body is 0.85 or greater but 1.1 or less, and self-excited vibration WRFt(LMH) of shear force of the elastic body in a LMH band is 1.5 gf or greater but 3.5 gf or less.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: March 10, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidetoshi Kami, Hiroki Orii, Ryohta Takahashi
  • IMAGE FORMING APPARATUS
    Publication number: 20190285997
    Abstract: Provided is an image forming apparatus including an image bearer capable of bearing a toner image, where a latent image is formed on the image bearer, a developing unit configured to develop the latent image formed on the image bearer with a toner, and a cleaning unit including a blade-shaped elastic body, where the elastic body is brought into contact with a surface of the image bearer, wherein a friction coefficient Ft/Fn between the image bearer and the elastic body is 0.85 or greater but 1.1 or less, and self-excited vibration WRFt(LMH) of shear force of the elastic body in a LMH band is 1.5 gf or greater but 3.5 gf or less.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 19, 2019
    Inventors: Hidetoshi KAMI, Hiroki ORII, Ryohta TAKAHASHI
  • Photoconductor, image-forming apparatus, and cartridge
    Patent number: 9535344
    Abstract: A photoconductor is used for an image-forming apparatus, and the photoconductor has a surface including irregularities having an arithmetic average roughness of 0.1 ?m or more and 0.5 ?m or less in a cycle length from 867 to 1,654 ?m.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: January 3, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Noboru Toriu, Hideki Nakamura, Tadayoshi Uchida, Hiroki Orii