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:
Nov. 28, 2000
Filed:
Apr. 13, 1999
Applicant:
Inventors:
Takahito Kabai, Yokohama, JP;
Yuuko Takano, Yokohama, JP;
Yasuo Goto, Yokohama, JP;
Toshiaki Yamauchi, Fujisawa, JP;
Yukihiro Fujikura, Kawasaki, JP;
Hisanobu Ajima, Kawasaki, JP;
Yoshihito Shimada, Kawasaki, JP;
Hiroshi Ohno, Yokohama, JP;
Assignees:
Toshiba TEC Kabushiki Kaisha, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430110 ; 430137 ;
Abstract
A wax dispersion in a developing agent using a polyester resin is improved by adding an ester wax in the polyester polymerizing step or both in the polymerizing and kneading steps, or by adding a compatibilizing agent selected from the group consisting of alkylene block copolymer or graft copolymer to a polyester-styrene hybrid resin used in place of the polyester resin.