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. 15, 2015
Filed:
Dec. 11, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Yojiro Hotta, Mishima, JP;
Shuhei Moribe, Mishima, JP;
Kosuke Fukudome, Tokyo, JP;
Satoshi Mita, Mishima, JP;
Kazuo Terauchi, Numazu, JP;
Tetsuya Ida, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The toner of the present invention includes toner particles containing polyester resins A and B and a colorant, the A has a polyester portion including a portion capable of forming a crystal structure and a crystal nucleating agent portion, which is bonded to an end of the polyester portion, the B is free from any portions capable of forming a crystal structure, in a chart obtained as a result of GPC of a THF-soluble matter of the B, a ratio of a component having a molecular weight of 1500 or less in the B is 5.0 to 15.0% by area, and when an SP value of the polyester portion of the A is represented by Sa ((cal/cm)) and an SP value of the B is represented by Sb ((cal/cm)), the SP values Sa and Sb satisfy the following relationships:9.50≦Sa≦11.00−0.65≦≦0.70.