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. 13, 2011
Filed:
Jul. 22, 2009
Hiroki Nakamatsu, Fujisawa, JP;
Kenji Sugiura, Yokohama, JP;
Naomi Sugimoto, Kawasaki, JP;
Osamu Naruse, Yokohama, JP;
Hidetoshi Yano, Yokohama, JP;
Hiroki Nakamatsu, Fujisawa, JP;
Kenji Sugiura, Yokohama, JP;
Naomi Sugimoto, Kawasaki, JP;
Osamu Naruse, Yokohama, JP;
Hidetoshi Yano, Yokohama, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A polarity controlling device for controlling polarity of residual material on an image bearing member, including a blade, to which a first voltage is applied and which has a contact edge contacted with the surface of the image bearing member to charge the residual material, wherein the contact edge is covered with a resin layer including an electroconductive material. A cleaner including the polarity controlling device; a brush contacting the image bearing member to electrostatically collect the charged residual material utilizing potential difference; a collection member contacting the brush to collect the residual material; and a cleaning blade contacting the collection member to scrape the residual material therefrom. An image forming apparatus including an electrostatic image bearing member; a developing device developing the electrostatic image using a developer including a toner to form a toner image; a transfer device transferring the toner image onto a receiving material; and the cleaner.