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:
Jul. 22, 2014
Filed:
Jun. 29, 2012
Takayasu Aoki, Shizuoka-ken, JP;
Motonari Udo, Shizuoka-ken, JP;
Tsuyoshi Itou, Shizuoka-ken, JP;
Masahiro Ikuta, Shizuoka-ken, JP;
Takafumi Hara, Shizuoka-ken, JP;
Takayasu Aoki, Shizuoka-ken, JP;
Motonari Udo, Shizuoka-ken, JP;
Tsuyoshi Itou, Shizuoka-ken, JP;
Masahiro Ikuta, Shizuoka-ken, JP;
Takafumi Hara, Shizuoka-ken, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is a decolorable toner produced by aggregating dispersed fine particles of a color material containing at least a color-forming compound, a color-developing agent and a decoloring agent with dispersed fine particles containing at least a binder resin having a carboxyl group, then adding a compound having a carbodiimide group or an epoxy group reactive with the carboxyl group of the binder resin, and thereafter fusing the aggregate particles, respectively in an aqueous medium. The thus obtained decolorable toner can suppress the generation of fine powder by the release of erasable color material fine particles from the toner particles.