The PCC prevents this problem. As the regionQL
Cleaning Blade
of the drum with toner still attached moves into
the cleaning unit, the PCC applies a positive
charge, and the charge on the toner is changed
from negative to positive. Since like charges
repel, it is much easier for the cleaning blade toCleaning
remove the toner from the drum. Also, sinceBrush
the cleaning brush is grounded, the fibers of
the brush have a negative chargePCC
electrostatically induced by the positive charge
Toner
on the drum. The negatively charged brush
attracts the positively charged toner and
removes about half of it from the drum. This
T/S Corona Unit
further reduces the load on the cleaning blade.
3. Drive Mechanism
The main chain drives the cleaning unit when the main motor is on. The brush gear
is fitted into the cleaning drive sprocket. A pin on the inside of the sprocket drives an
Allen screw on the shaft of the gear, turning the gear. The brush gear drives the coil
gear directly, and the toner in the unit is transported to the toner collection bottle by
the toner collection coil.
Allen Screw
Cleaning Brush
Cleaning Drive
Sprocket
Brush Gear
Toner
Collection Coil
Main Chain
Coil Gear
Cleaning Solenoid
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