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:
Feb. 05, 2013
Filed:
Feb. 24, 2009
Naoya Isono, Suntou-gun, JP;
Satoshi Handa, Saitama, JP;
Katsuyuki Nonaka, Mishima, JP;
Koji Abe, Numazu, JP;
Yasuhiro Hashimoto, Mishima, JP;
Akira Sugiyama, Yokohama, JP;
Yuhei Terui, Numazu, JP;
Naoya Isono, Suntou-gun, JP;
Satoshi Handa, Saitama, JP;
Katsuyuki Nonaka, Mishima, JP;
Koji Abe, Numazu, JP;
Yasuhiro Hashimoto, Mishima, JP;
Akira Sugiyama, Yokohama, JP;
Yuhei Terui, Numazu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner is provided which is excellent in development stability in both a low-temperature, low-humidity environment and a high-temperature, high-humidity environment over a long time period. The toner includes toner particles containing at least a binder resin and a colorant, and a fatty acid metal salt. The fatty acid metal salt has a volume-based median diameter (D50s) of 0.15 μm or more and 0.65 μm or less, and the liberation ratio of the fatty acid metal salt in the toner is 1.0% or more and 25.0% or less.