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. 24, 2012
Filed:
Apr. 06, 2010
Tomohisa Sano, Suntou-gun, JP;
Michihisa Magome, Mishima, JP;
Takashi Matsui, Suntou-gun, JP;
Akira Sakakibara, Susono, JP;
Shuichi Hiroko, Susono, JP;
Yoshitaka Suzumura, Mishima, JP;
Shotaro Nomura, Suntou-gun, JP;
Tomohisa Sano, Suntou-gun, JP;
Michihisa Magome, Mishima, JP;
Takashi Matsui, Suntou-gun, JP;
Akira Sakakibara, Susono, JP;
Shuichi Hiroko, Susono, JP;
Yoshitaka Suzumura, Mishima, JP;
Shotaro Nomura, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To provide a toner excellent in low-temperature fixability, releasing performance, and development stability in long-term use under a high-temperature and high-humidity environment, provided is a magnetic toner including: magnetic toner particles each containing at least a binder resin and a magnetic particles; and an inorganic fine powder, in which: the magnetic particles is a treated magnetic particles treated with a silane compound; the treated magnetic particles has a water adsorption per unit area based on a BET specific surface area of 0.300 mg/mor less; portion of styrene extractables constitutes 25 mass % or less among the silane compound in the treated magnetic particles; and the silane compound with which the treated magnetic particles is treated contains a compound having a hydrocarbon group having 2 or more and 4 or less carbon atoms as a main component.