The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 1978
Filed:
Aug. 29, 1975
Applicant:
Inventors:
Kazuo Tsubuko, Tokyo, JA;
Tsuneo Kurotori, Tokyo, JA;
Taro Kimura, Tokyo, JA;
Toshiyuki Kawanishi, Tokyo, JA;
Yoshikazu Kaneko, Tokyo, JA;
Assignee:
Ricoh Co., Ltd., Tokyo, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
252 / ; 96 / ; 260 / ; 260885 ; 427 15 ; 427 17 ;
Abstract
This invention provides a liquid developer for use in electrophotography which comprises a dispersion of toner particles in a carrier liquid having a high resistivity and a low dielectric constant and is superior in fixability, dispersion stability and redispersability, said toner particles consisting essentially of pigment or dye particles and a non-aqueous dispersion of thermoplastic resinous composition comprising a graft-copolymer and at least one substance selected from wax the groups consisting of polyethylene.