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:
Jul. 18, 2000
Filed:
May. 23, 1997
Applicant:
Inventors:
Koichi Tomiyama, Yokohama, JP;
Takaaki Kohtaki, Yokohama, JP;
Manabu Ohno, Funabashi, JP;
Makoto Unno, Tokyo, JP;
Yushi Mikuriya, Kawasaki, JP;
Nobuyuki Okubo, Yokohama, JP;
Tadashi Doujo, Kawasaki, JP;
Shunji Suzuki, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430106 ; 430110 ; 430124 ; 430111 ; 399111 ;
Abstract
A toner for developing electrostatic images includes a binder resin, a specific long-chain alkyl compound and a specific azo iron complex. The long-chain alkyl compound contains a terminal --OH or --COOH group and from about 35 to 150 (--CH.sub.2 --) groups. The azo iron complex has a cation including 75-98 mol. % of ammonium ion and another ion which is hydrogen, sodium, potassium or mixtures thereof.