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:
Sep. 22, 2015
Filed:
Dec. 12, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Shuhei Moribe, Mishima, JP;
Kosuke Fukudome, Tokyo, JP;
Satoshi Mita, Mishima, JP;
Kazuo Terauchi, Numazu, JP;
Yojiro Hotta, Mishima, JP;
Tetsuya Ida, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The toner includes toner particles containing a polyester resin A, a polyester resin B and a colorant, the polyester resin A has a polyester portion including a segment capable of forming a crystal structure and a crystal nucleating agent segment, which is bonded to an end of the polyester portion, and the polyester resin B is a resin which is free of any segments capable of forming a crystal structure, the polyester resin B has a weight average molecular weight Mwb by GPC of a THF soluble matter of 3000 or more and 100000 or less, and an SP value Sa ((cal/cm)) of the polyester portion of the polyester resin A and an SP value Sb ((cal/cm)) of the polyester resin B satisfy the following relationships:9.00≦≦10.50−0.40≦≦0.80.