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:
Oct. 30, 2007
Filed:
Jul. 30, 2004
Shuhei Moribe, Shizuoka, JP;
Nobuyuki Okubo, Shizuoka, JP;
Tsutomu Onuma, Kanagawa, JP;
Hideto Iida, Chiba, JP;
Koji Nishikawa, Shizuoka, JP;
Takashige Kasuya, Shizuoka, JP;
Shuhei Moribe, Shizuoka, JP;
Nobuyuki Okubo, Shizuoka, JP;
Tsutomu Onuma, Kanagawa, JP;
Hideto Iida, Chiba, JP;
Koji Nishikawa, Shizuoka, JP;
Takashige Kasuya, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner is composed of toner particles including toner base particles containing at least a binder resin and a colorant, and inorganic fine particles. The toner base particles having a specific circle-equivalent diameter as measured with a flow type particle image analyzer have a specific average circularity. The toner base particles have a specific surface roughness as measured with a scanning probe microscope. The binder resin contains at least a vinyl resin having as partial structure a linkage formed by the reaction of a carboxyl group with an epoxy group.