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:
Aug. 15, 2017
Filed:
Apr. 01, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Akane Masumoto, Yokohama, JP;
Katsuyuki Nonaka, Mishima, JP;
Koji Abe, Numazu, JP;
Toshihiko Katakura, Susono, JP;
Tsuneyoshi Tominaga, Suntou-gun, JP;
Shiro Kuroki, Suntou-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a toner that is improved in transferability as compared to the related art and that keeps its effects through repeated use. In particular, provided is a toner suppressed in dependency on transfer current control. The toner includes a toner particle including a surface layer containing an organosilicon polymer and a resin having an ionic functional group, the organosilicon polymer having a partial structure represented by the following formula (1), the toner particle containing 5.0% or more of the partial structure represented by the formula (1) per 1.000 silicon atom contained in the organosilicon polymer, the resin having an ionic functional group having a pKa of 6.0 or more and 9.0 or less:R—SiO  (1)in the formula (1), Rrepresents an alkyl group having 1 or more and 6 or less carbon atoms, or a phenyl group.