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. 12, 2013
Filed:
Jun. 09, 2011
Satoru Ariyoshi, Osaka, JP;
Yasuhiro Shibai, Osaka, JP;
Nobuhiro Maezawa, Osaka, JP;
Katsuru Matsumoto, Osaka, JP;
Satoru Ariyoshi, Osaka, JP;
Yasuhiro Shibai, Osaka, JP;
Nobuhiro Maezawa, Osaka, JP;
Katsuru Matsumoto, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A toner includes a binder resin and a colorant. 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, the polyester resin B having a viscosity of 10Pa·s or more and 10Pa·s or less at a softening temperature of the polyester resin A, the polyester resin B being contained in an amount of 50 parts by weight or more and 200 parts by weight or less relative to 100 parts by weight of the polyester resin A.