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:
Dec. 06, 1988
Filed:
Jul. 07, 1987
Applicant:
Inventors:
Shoji Ohtani, Osaka, JP;
Kazunari Takemura, Wakayama, JP;
Yukiya Sato, Wakayama, JP;
Rikio Tsushima, Wakayama, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430110 ; 430137 ;
Abstract
A developing toner composition is effectively prepared by dispersing in a polymerizable monomer a charge controller, a coloring agent and a highly dielectric material having a dielectric constant of at least 10 at room temperature and a volume resistivity of at least 1.times.10.sup.10 ohm.cm and dispersion-polymerizing the resulting dispersion in an aqueous medium in the presence of a dispersion stabilizer to obtain resin particles.