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. 10, 2007
Filed:
Jul. 13, 2006
Tsuyoshi Takiguchi, Shizuoka, JP;
Yosuke Morikawa, Kanagawa, JP;
Takashige Kasuya, Shizuoka, JP;
Kimihiro Yoshimura, Kanagawa, JP;
Katsuhisa Yamazaki, Shizuoka, JP;
Kaori Hiratsuka, Shizuoka, JP;
Tsuyoshi Takiguchi, Shizuoka, JP;
Yosuke Morikawa, Kanagawa, JP;
Takashige Kasuya, Shizuoka, JP;
Kimihiro Yoshimura, Kanagawa, JP;
Katsuhisa Yamazaki, Shizuoka, JP;
Kaori Hiratsuka, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner exhibits excellent image characteristics, and also has an excellent charging property even if the toner is used in a cleaning-simultaneous-with-developing system having a direct injection charging mechanism. The toner includes toner particles and non-magnetic metallic-compound fine particles. The weight average particle diameter of the toner is 3.0 μm to 12.0 μm. The metallic-compound fine particles are conductive metallic-compound fine particles having a specific surface area (cm/cm) of 5×10to 100×10; a medium diameter (D) of 0.4 μm to 4.0 μm with respect to a volume-based particle diameter distribution, the medium diameter (D) being smaller than the weight average particle diameter of the toner; and a 90% particle diameter Dof 6.0 μm or less with respect to a volume-based particle diameter.