Electrophotography – Having particular structure – Modular or displaceable
Reexamination Certificate
2006-07-25
2006-07-25
Gutierrez, Diego (Department: 2859)
Electrophotography
Having particular structure
Modular or displaceable
C399S117000
Reexamination Certificate
active
07082275
ABSTRACT:
A biasing mechanism in an image forming apparatus exerts a variable force on a removable cartridge unit to generate a nip force between a roller in the cartridge unit and another roller. A pivot member is fixed to the apparatus housing. An arm is pivotally mounted in the housing about the pivot member, with the arm in contact with a protrusion on the cartridge unit. A force generating member is mounted in the housing and contacts the arm so as to urge the arm to pivot about the pivot member and press against the cartridge unit. The resulting force exerted on the cartridge unit by the arm varies according to the point of contact between the cartridge unit and the arm. In some embodiments, the arm and the cartridge unit protrusion are electrically conductive, and an electrical contact is established as the arm is pressed against the protrusion.
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Askren Benjamin Alan
Foster Larry Steven
Portig Harald
Coats & Bennett P.L.L.C.
Gutierrez Diego
Jagan Mirellys
Lexmark International Inc.
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