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. 01, 2003
Filed:
Oct. 06, 2000
Applicant:
Inventors:
Takeshi Naka, Susono, JP;
Yuichi Mizoo, Toride, JP;
Satoshi Matsunaga, Mishima, JP;
Masami Azuma, Toride, JP;
Takashige Kasuya, Sunto-gun, JP;
Tadashi Dojo, Numazu, JP;
Tsuneo Nakanishi, Mishima, JP;
Nene Shibayama, Mishima, JP;
Katsuhisa Yamazaki, Numazu, JP;
Yusuke Hasegawa, Numazu, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 ;
U.S. Cl.
CPC ...
G03G 9/08 ;
Abstract
A toner manufacturing method includes grinding and classification to produce a toner containing a binder resin and a colorant with a weight mean particle size of 5 microns to 12 microns and sharp particle density distribution. The toner has a specific circularity, relationship between cut ratio and weight mean size, and relationship between circularity and weight mean size as disclosed in the specification.