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:
Dec. 27, 2011
Filed:
Mar. 19, 2008
Yukimichi Someya, Machida, JP;
Eiichi Ohta, Kawasaki, JP;
Naomi Sugimoto, Kawasaki, JP;
Takuro Sekiya, Yokohama, JP;
Yasuo Katano, Yokohama, JP;
Shohji Tanaka, Fujisawa, JP;
Yoshihiko Iijima, Sendai, JP;
Toshihiro Ishii, Sendai, JP;
Yukimichi Someya, Machida, JP;
Eiichi Ohta, Kawasaki, JP;
Naomi Sugimoto, Kawasaki, JP;
Takuro Sekiya, Yokohama, JP;
Yasuo Katano, Yokohama, JP;
Shohji Tanaka, Fujisawa, JP;
Yoshihiko Iijima, Sendai, JP;
Toshihiro Ishii, Sendai, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electric charging apparatus charges a surface of a charging object. The electric charging apparatus includes an electric field forming device including two electrodes facing each other that form an electric field therebetween. An electron discharging member is provided at a portion of one of the two electrodes that faces the other electrode and discharges electrons into the electric field. The electric charging apparatus also includes a voltage applying controller that controls a voltage applied to the two electrodes. The voltage applying controller selects two or more nonzero intensities of the electric field.