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. 21, 2006
Filed:
Nov. 06, 2003
Hideaki Hasegawa, Shizuoka, JP;
Kazumi Yamauchi, Shizuoka, JP;
Yoshihiro Ogawa, Shizuoka, JP;
Norihito Naito, Shizuoka, JP;
Yasunao Otomo, Shizuoka, JP;
Nobuo Oshima, Shizuoka, JP;
Hideaki Hasegawa, Shizuoka, JP;
Kazumi Yamauchi, Shizuoka, JP;
Yoshihiro Ogawa, Shizuoka, JP;
Norihito Naito, Shizuoka, JP;
Yasunao Otomo, Shizuoka, JP;
Nobuo Oshima, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developing apparatus includes a rotatable, developer carrying body for carrying a one-component developer and a rotatable, agitating member for agitating the one-component developer. The one-component developer is magnetic toner at least containing a bonding resin and magnetic iron oxide. When wettability of the magnetic toner relative to a mixture solution of methanol and water is measured at the transmittance of light having a wavelength of 780 nm, a methanol concentration at the transmittance of 80% is within the range of 45 to 65 volume %, and wherein 0.1≦b/a≦0.2 is established where a (rps) denotes the rotation speed of the developer carrying body, and b (rps) denotes the rotation speed of the agitating member.