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. 04, 2015
Filed:
May. 17, 2012
Akane Masumoto, Yokohama, JP;
Hitoshi Itabashi, Yokohama, JP;
Takashi Kenmoku, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner including toner particles containing a binder resin, a colorant and a charge controlling agent, wherein the charge controlling agent is a polymer A having a structure 'a' represented by formula (1), and the polymer A has a weight average molecular weight (Mw) of 1,000 to 100,000: wherein Rrepresents a hydroxyl group, a carboxyl group, an alkyl group having 1 to 18 carbon atoms, or an alkoxyl group having 1 to 18 carbon atoms, Rrepresents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 18 carbon atoms, or an alkoxyl group having 1 to 18 carbon atoms, and g represents an integer of 1 to 3 and h represents an integer of 0 to 3, wherein when h is 2 or 3, Rcan be each independently selected.