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:
Apr. 14, 2015
Filed:
Feb. 14, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Naotaka Ikeda, Kamakura, JP;
Emi Watanabe, Suntou-gun, JP;
Yuhei Terui, Numazu, JP;
Taiji Katsura, Suntou-gun, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 5/00 (2006.01); G03G 9/08 (2006.01); B82Y 30/00 (2011.01); G03G 9/097 (2006.01);
U.S. Cl.
CPC ...
G03G 9/0812 (2013.01); B82Y 30/00 (2013.01); G03G 9/09716 (2013.01); G03G 9/09725 (2013.01); G03G 9/0819 (2013.01);
Abstract
A toner containing toner particles, each of which contains a binder resin and a colorant, and silica particles, wherein the silica particles have a volume average particle diameter (Dv) of 70 nm or more and 500 nm or less, the variation coefficient of diameters of the silica particles, based on volume distribution thereof, is 23% or less, and wherein when the silica particles are heated from 105° C. to 200° C., the ratio of mass decrease is 0.60% or less.