Electrophotography – Cleaning of imaging surface – Having handling of removed material
Reexamination Certificate
2007-02-15
2009-11-24
Gray, David M (Department: 2852)
Electrophotography
Cleaning of imaging surface
Having handling of removed material
Reexamination Certificate
active
07623820
ABSTRACT:
An image forming unit includes an image bearing member. A transfer member transfers a toner image on the image bearing member to a record member. A cleaning member cleans toner adhered onto the transfer member. A toner container contains toner cleaned by the cleaning member. A toner sensor, which is positioned at a center area of said toner container in a direction orthogonal to a moving direction of the image bearing member and detects an amount of collected toner. A conveyance member conveys the collected toner and includes first screws to convey toner to a position corresponding to an area in which the first area is excluded from the second area in a direction toward the detection position, and second screws to convey toner to a position between said first screws and the detection position in a direction opposite to the direction toward the detection position.
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Nada Takao
Tanaka Hiroyuki
Canon Kabushiki Kaisha
Do Andrew V
Fitzpatrick ,Cella, Harper & Scinto
Gray David M
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