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:
May. 13, 2014
Filed:
Mar. 08, 2011
Eiji Shirai, Wakayama, JP;
Hiroki Kakiuchi, Wakayama, JP;
Eiji Shirai, Wakayama, JP;
Hiroki Kakiuchi, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
The present invention relates to a resin binder for toners which contains a crystalline polyester which is produced by polycondensing at least an alcohol component containing an aliphatic diol having 2 to 12 carbon atoms and a carboxylic acid component containing an aliphatic dicarboxylic acid compound having 8 to 12 carbon atoms in an amount of from 70 to 100 mol %, wherein a content of a methyl ethyl ketone soluble component (at 20° C.) in the crystalline polyester is from 0.5 to 7% by weight on the basis of a weight of the crystalline polyester, and a difference between a melting point of the crystalline polyester and a peak top temperature observed in DSC measurement of the methyl ethyl ketone soluble component ('melting point of the crystalline polyester'−'peak top temperature observed in DSC measurement of the methyl ethyl ketone soluble component') is within the range of from 1 to 15° C.