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. 05, 2017
Filed:
Jul. 22, 2014
Sanyo Chemical Industries, Ltd., Kyoto, JP;
Takashi Ono, Kyoto, JP;
Kazuki Sugiyama, Kyoto, JP;
Takaaki Bando, Kyoto, JP;
Yasuaki Ota, Kyoto, JP;
Takahiro Tanaka, Kyoto, JP;
Taiji Yamashita, Kyoto, JP;
Kakuhiro Kawaguchi, Kyoto, JP;
Sanyo Chemical Industries, Ltd., Kyoto, JP;
Abstract
A toner binder comprising a polyester, the end of which is partially esterified with a monocarboxylic acid and/or a monohydric alcohol, the polyhydric alcohol component of which comprises a Calkylene glycol (a21) and an aromatic-ring-bearing diol (a22) at an (a21)/(a22) molar ratio of 5/95 to 70/30, and which has an ester group concentration of 16 to 30 wt % and satisfies a specific relationship between the ester group concentration and the hydroxy value. The toner binder combines low-temperature fixability and storage stability under high-temperature conditions or heat-temperature and -humidity conditions, and exhibits excellent durability.