Electrophotography – Cleaning of imaging surface – Blade
Reexamination Certificate
2007-02-27
2007-02-27
Royer, William J. (Department: 2852)
Electrophotography
Cleaning of imaging surface
Blade
Reexamination Certificate
active
10943980
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)=μ2−μ1×(Ntp/Nbt+cosθ)>0. Here μ1is the friction coefficient between toner and image carrier, μ2is the friction coefficient between toner and blade, Ntpis the adhesive force between toner and image carrier, Nbtis the force received by the toner from the blade, and θ is the angle formed by the blade and image carrier (the cleaning angle).
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Naruse Osamu
Shakuto Masahiko
Watanabe Kazuhiko
Yano Hidetoshi
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