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. 27, 2007
Filed:
Sep. 20, 2004
Osamu Naruse, Kanagawa, JP;
Masahiko Shakuto, Kanagawa, JP;
Hidetoshi Yano, Kanagawa, JP;
Kazuhiko Watanabe, Tokyo, JP;
Osamu Naruse, Kanagawa, JP;
Masahiko Shakuto, Kanagawa, JP;
Hidetoshi Yano, Kanagawa, JP;
Kazuhiko Watanabe, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A cleaning device and process cartridge including the same for an image formation apparatus, which prevents cleaning failures due to toner slipping past a blade, based on an equation for the force of toner particle rotation and the restraining force. Toner on an image carrier is removed by a blade. The relation between the blade and the image carrier satisfies the equation f(θ)=μ−μ×(N/N+cosθ)>0. Here μis the friction coefficient between toner and image carrier, μis the friction coefficient between toner and blade, Nis the adhesive force between toner and image carrier, Nis the force received by the toner from the blade, and θ is the angle formed by the blade and image carrier (the cleaning angle).