Patents Examined by Stephen Crosson
  • Liquid developer for image fixing method using heat application rollers
    Patent number: 5169739
    Abstract: A liquid developer comprises an aliphatic hydrocarbon carrier liquid and a toner dispersed in the carrier liquid, which toner comprises a coloring agent and a resin component, wherein a solid toner component which is obtained by evaporating the liquid developer to dryness has a softening point of 60.degree. C. to 90.degree. C. and flow-initiating point of 110.degree. C. to 160.degree. C.
    Type: Grant
    Filed: February 13, 1990
    Date of Patent: December 8, 1992
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazuhiko Umemura, Kazuo Tsubuko, Shinichi Kuramoto, Toshihiko Takahashi, Hidemi Uematsu