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:
Apr. 19, 2011
Filed:
Feb. 14, 2008
Naomi Sugimoto, Kawasaki, JP;
Hidetoshi Yano, Yokohama, JP;
Kenji Sugiura, Yokohama, JP;
Osamu Naruse, Yokohama, JP;
Yasuyuki Yamashita, Zema, JP;
Naomi Sugimoto, Kawasaki, JP;
Hidetoshi Yano, Yokohama, JP;
Kenji Sugiura, Yokohama, JP;
Osamu Naruse, Yokohama, JP;
Yasuyuki Yamashita, Zema, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A cleaning apparatus for removing charged particles includes a cleaning brush and a recovery unit. The cleaning brush removes the charged particles from an object by attracting the charged particles having positive and negative polarity. The recovery unit for recovering the charged particles from the cleaning brush includes a recovery member, a first charge applicator, a second charge applicator, and a voltage control unit. The recovery member is supplied with a voltage to attract the charged particles. The recovery member has a core and a surface layer. The first charge applicator applies a voltage to the surface layer of the recovery member. The second charge applicator applies a voltage to the core of the recovery member. The voltage control unit controls a polarity of the voltage to be applied by the first and second charge applicators depending on a polarity of the charged particles to be recovered.