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:
Jun. 06, 1995
Filed:
Jan. 26, 1994
Applicant:
Inventors:
Seiichi Takagi, Yokohama, JP;
Makoto Unno, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430111 ; 430703 ;
Abstract
A magnetic toner comprises a binder resin and a magnetic material. The magnetic toner has a volume average particle diameter of not more than 9 .mu.m and the variation coefficient of particle size distribution, (.sigma.T/D).times.100, of the magnetic toner satisfies the following condition: