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:
Feb. 21, 2017
Filed:
Jul. 29, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Takeshi Naka, Suntou-gun, JP;
Kazuo Terauchi, Numazu, JP;
Motohide Shiozawa, Mishima, JP;
Yojiro Hotta, Mishima, JP;
Shohei Tsuda, Suntou-gun, JP;
Katsuhisa Yamazaki, Numazu, JP;
Koji Nishikawa, Susono, JP;
Takayuki Itakura, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner is provided including large particle-diameter external additives with sweep to the concaves of a toner particle suppressed, so that the large particle-diameter external additives function as spacer particles for a long period. The toner includes toner particles which contain a binder resin and magnetic material, and organic-inorganic composite fine particles having a structure including inorganic fine particles embedded in a vinyl resin particle. The presence state of the magnetic material on the toner particle surface satisfies specific conditions and the presence state of the organic-inorganic composite fine particles on the toner surface satisfies specific conditions.