Patents Assigned to Fuji Xerox Co., Inc. Ltd.
  • Patent number: 5821022
    Abstract: A carrier for developing an electrostatic latent image comprising a core material coated with a resin layer, wherein the F/N ratio of the surface of the resin layer ranges from 1 to 20. It is desirable that the resin layer include resin particles containing a nitrogen atom, that the average particle diameter of the nitrogen-atom-containing resin be in a range from 0.1 to 2 .mu.m, that the thickness of the resin layer be in a range from 0.1 to 10 .mu.m, that the resin layer include an electroconductive material which is in a condition to be dispersed in the resin layer, that the electroconductive material be made of carbon black, and that the average particle diameter of the carrier for developing an electrostatic latent image be in a range from 30 to 150 .mu.m. The carrier for developing an electrostatic latent image, which is long-lived, provided with a charging capability unchanged over time, and is capable of effectively preventing fogging are provided.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: October 13, 1998
    Assignee: Fuji Xerox Co., Inc. Ltd.
    Inventors: Kaori Ohishi, Susumu Yoshino, Satoshi Inoue, Chiaki Suzuki, Sueko Sakai