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:
May. 28, 1996
Filed:
Nov. 18, 1994
Applicant:
Inventors:
Masatomi Funato, Osaka, JP;
Yoshitake Shimizu, Osaka, JP;
Seijiro Ishimaru, Osaka, JP;
Kazuya Nagao, Osaka, JP;
Assignee:
Mita Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430904 ;
Abstract
A toner in which a small amount of magnetic powder is disposed in a resin medium for fixing which comprises a cationic polar group-containing copolymer resin or a resin composition. A distinguished feature resides in that the toner does not contain a charge control agent. The toner is positively charged and exhibits very good spent resistance. The toner further exhibits favorable electrophotographic properties such as transfer efficiency despite there is contained no charge control agent.