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:
Oct. 22, 2013
Filed:
Mar. 31, 2010
Masashi Minaki, Kyoto, JP;
Shinichi Maeda, Kyoto, JP;
Mitsumasa Kamura, Kyoto, JP;
Shuichi Shinohara, Kyoto, JP;
Yuya Iwagoe, Kyoto, JP;
Masashi Minaki, Kyoto, JP;
Shinichi Maeda, Kyoto, JP;
Mitsumasa Kamura, Kyoto, JP;
Shuichi Shinohara, Kyoto, JP;
Yuya Iwagoe, Kyoto, JP;
Sanyo Chemical Industries, Ltd., Kyoto, JP;
Abstract
Disclosed is a toner binder which has high storage stability and can achieve both of good low-temperature fixability and good hot offset resistance (a broadened fixing temperature range). Specifically disclosed is a toner binder comprising, as constituting units, a carboxylic acid component (x) and a polyol component (y), wherein the component (x) comprises two or more kinds of dicarboxylic acids (X1), selected from among aromatic dicarboxylic acids and ester-forming derivatives of the same, in a total amount of 80 mol % or more and a trivalent or higher polycarboxylic acid (x2); the component (y) comprises a polyester resin (P) which is constituted by a polyester resin (A) comprising 80 mol % or more of an aliphatic diol (y1) having 2 to 10 carbon atoms optionally together with a linear polyester resin (B); and the storage modulus at 150° C. [G'150] of resin (A) is 20000 dyn/cmor more and the ratio of [G′150] to the storage modulus as 180° C. [G′180] thereof, i.e., [G′150]/[G′180], is 15 of less.