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:
May. 24, 2005
Filed:
Sep. 26, 2002
Kiyoshi Mizoe, Numazu, JP;
Tsuyoshi Takiguchi, Shizuoka-ken, JP;
Fumihiro Arahira, Shizuoka-ken, JP;
Masanori Ito, Tokyo, JP;
Kiyoshi Mizoe, Numazu, JP;
Tsuyoshi Takiguchi, Shizuoka-ken, JP;
Fumihiro Arahira, Shizuoka-ken, JP;
Masanori Ito, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner suitable for use in an image forming method including a contact charging step is provided. The toner includes: toner particles comprising at least a binder resin and a colorant, and fine particles. The fine particles comprise: (i) a tungsten-containing tin oxide, or (ii) base particles, and a tungsten-containing tin compound coating the base particles, the fine particles contain tin (Sn) in a weight ratio (Sn/b) of 0.01 to 2.0 with respect to the base particles (B). In the fine particles, tungsten (W) is contained in a mol ratio (W/Sn) of 0.001 to 0.3 with respect to the tin (Sn).