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:
Sep. 09, 2008
Filed:
Feb. 26, 2004
Yoshihiro Ogawa, Shizuoka, JP;
Takashige Kasuya, Shizuoka, JP;
Syuhei Moribe, Shizuoka, JP;
Kouji Nishikawa, Shizuoka, JP;
Yoshihiro Ogawa, Shizuoka, JP;
Takashige Kasuya, Shizuoka, JP;
Syuhei Moribe, Shizuoka, JP;
Kouji Nishikawa, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a magnetic toner comprising magnetic toner particles each comprising at least a binder resin and a magnetic iron oxide, the magnetic toner being excellent in developability and environmental stability, and being capable of reducing a toner consumption. A saturation magnetization σs and a remanent magnetization σr of the magnetic toner in a measured magnetic field of 795.8 kA/m are arranged in the range of 5 to 60 Am/kg and in the range of 0.1 to 10.0 Am/kg, respectively, and the binder resin having a polyester component polymerized by using a Ti chelate compound as a catalyst is used.