Patents by Inventor Yoshinori Mutuo

Yoshinori Mutuo 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).

  • MAGNETIC CARRIER, TWO COMPONENT DEVELOPER, DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
    Publication number: 20100104329
    Abstract: Regarding a magnetic carrier of the present invention, a surface of a magnetic core material is coated with a coating layer containing electrically conductive particles and a charge control agent composed of same components as components of a charge control agent contained in a electrophotographic toner. Further, the magnetic carrier exhibits an electric resistance value of 8.22×107 ?cm to 1.12×1010 ?cm in an electric field of 4×103 V/cm. This allows the magnetic carrier to stay capable of charging the electrophotographic toner even over a long period of time.
    Type: Application
    Filed: July 8, 2008
    Publication date: April 29, 2010
    Inventors: Nobuyuki Yoshioka, Tadashi Iwamatsu, Yoshinori Mutuo, Hiroyuki Hirakawa, Takashi Hara, Takanori Kamoto