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:
Nov. 04, 2014
Filed:
Jun. 09, 2011
Satoru Ariyoshi, Osaka, JP;
Yasuhiro Shibai, Osaka, JP;
Katsuru Matsumoto, Osaka, JP;
Nobuhiro Maezawa, Osaka, JP;
Satoru Ariyoshi, Osaka, JP;
Yasuhiro Shibai, Osaka, JP;
Katsuru Matsumoto, Osaka, JP;
Nobuhiro Maezawa, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A toner includes a binder resin, a colorant, and a benzilic acid compound. The binder resin contains a polyester resin A obtained by subjecting aromatic dicarboxylic acid, rosin and trivalent or higher-valent alcohol as starting materials to polycondensation, a content of the rosin in a sum of the starting materials being 60% by weight or more, and a polyester resin B obtained by subjecting aromatic dicarboxylic acid and polyhydric alcohol as starting materials to polycondensation.