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. 03, 2014
Filed:
Apr. 12, 2011
Hideki Kaneko, Yokohama, JP;
Shinya Yachi, Mishima, JP;
Kenichi Nakayama, Numazu, JP;
Takeshi Kaburagi, Suntou-gun, JP;
Shiro Kuroki, Suntou-gun, JP;
Hideki Kaneko, Yokohama, JP;
Shinya Yachi, Mishima, JP;
Kenichi Nakayama, Numazu, JP;
Takeshi Kaburagi, Suntou-gun, JP;
Shiro Kuroki, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner includes toner particles each containing a binder resin, a colorant, and a carboxy-containing styrene-based resin, in which the toner particles are produced in an aqueous medium, each of the toner particles has a styrene-acrylic-based resin component content of 50.0% by mass or more, cyclohexane-insoluble matter A obtained by subjecting the toner to Soxhlet extraction with cyclohexane for 4 hours is 70.0% by mass or more, and cyclohexane-insoluble matter B obtained by subjecting the toner to Soxhlet extraction with cyclohexane for 24 hours is 40.0% by mass or less, and wherein when the z-average molecular weight and the weight-average molecular weight of tetrahydrofuran-soluble matter of the carboxy-containing styrene-based resin determined by gel permeation chromatography measurement are represented by Mz and Mw, respectively, Mz and Mw satisfy the following expressions: