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:
Jan. 27, 2015
Filed:
Jun. 29, 2012
Takayasu Aoki, Shizuoka-ken, JP;
Takafumi Hara, Shizuoka-ken, JP;
Tsuyoshi Itou, Shizuoka-ken, JP;
Masahiro Ikuta, Shizuoka-ken, JP;
Motonari Udo, Shizuoka-ken, JP;
Koji Shimokusa, Wakayama-ken, JP;
Hiroshi Mizuhata, Wakayama-ken, JP;
Takayasu Aoki, Shizuoka-ken, JP;
Takafumi Hara, Shizuoka-ken, JP;
Tsuyoshi Itou, Shizuoka-ken, JP;
Masahiro Ikuta, Shizuoka-ken, JP;
Motonari Udo, Shizuoka-ken, JP;
Koji Shimokusa, Wakayama-ken, JP;
Hiroshi Mizuhata, Wakayama-ken, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is a process for production of a decolorable toner, including: aggregating dispersed fine particles of a color material comprising at least a color-forming compound, a color-developing agent and a decoloring agent with dispersed fine particles comprising at least a binder resin comprising a polyester resin to form aggregates in an aqueous medium, adding a reactive polymer having an oxazoline group in to the aqueous medium, and fusing the aggregates in the aqueous medium. As a result, it becomes possible to produce a decolorable toner which suppresses the generation of fine powder due to the release of fine particles of an erasable color material from the toner.