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:
Jan. 10, 1995
Filed:
Apr. 11, 1989
Applicant:
Inventor:
Toshiro Tokuno, Takarazuka, JP;
Assignee:
Mita Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430109 ; 430137 ; 524847 ;
Abstract
A toner composition is produced by bulk- or solution-polymerizing a fixer resin in the presence of toner-characteristic imparting agents such as a colorant and a charge controlling agent. According to this process, unlike a suspension polymerization method, since no surface-active agent is used at any stage of production, the produced toner is remarkably proof against moisture. Especially, if a grafted carbon black is used as the colorant, it is possible to obtain a toner in which the colorant is dispersed minutely and uniformly throughout the fixer resin.