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:
Jun. 06, 2006
Filed:
Jun. 16, 2003
Kenji Sugiura, Yokohama, JP;
Nekka Matsuura, Yokohama, JP;
Yasushi Nakazato, Tokyo, JP;
Takahiko Tokumasu, Tokyo, JP;
Kazuhito Watanabe, Yokohama, JP;
Noriyoshi Tarumi, Hachioji, JP;
Kenji Sugiura, Yokohama, JP;
Nekka Matsuura, Yokohama, JP;
Yasushi Nakazato, Tokyo, JP;
Takahiko Tokumasu, Tokyo, JP;
Kazuhito Watanabe, Yokohama, JP;
Noriyoshi Tarumi, Hachioji, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A charging device of the present invention includes a charging member and a body to be charged forming a nip therebetween. Charge-promoting conductive grains, frictionally charged to polarity opposite to the polarity of a voltage applied to the charging member, are held at the above nip. The charging device is operable in a cleaning mode for cleaning the body to be charged.