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:
Nov. 18, 2008
Filed:
Apr. 06, 2004
Kazuhiko Hayami, Ibaraki, JP;
Hirohide Tanikawa, Shizuoko, JP;
Tetsuya Ida, Shizuoka, JP;
Akira Hashimoto, Shizuoka, JP;
Nozomu Komatsu, Shizuoka, JP;
Hiroyuki Fujikawa, Kanagawa, JP;
Kazuhiko Hayami, Ibaraki, JP;
Hirohide Tanikawa, Shizuoko, JP;
Tetsuya Ida, Shizuoka, JP;
Akira Hashimoto, Shizuoka, JP;
Nozomu Komatsu, Shizuoka, JP;
Hiroyuki Fujikawa, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A color toner that comprises at least a binder resin, a colorant and a release agent, wherein the binder resin has at least a polyester unit and is synthesized in the presence of a tin compound as a catalyst represented by the general formula (1):(RCOO)Sn  (1)wherein, R is an alkyl group of 5 to 15 carbon atoms. The toner is excellent in charge build-up, resistance to high temperature offset, color reproducibility and transparency.