Drum Cleaning; Overview - Ricoh FT4430 Service Manual

16 April '88

DRUM CLEANING

OVERVIEW

The cleaning brush [A] and cleaning blade [B] remove any toner remaining
on the drum after the image is transferred to the paper.
The cleaning brush and drum move in opposite directions at their point of
contact. The cleaning brush removes paper dust and nearly half of the toner
from the drum surface to reduce the cleaning load placed on the blade.
Next, the cleaning blade removes the remaining toner. The falling toner
catches in the fibers of the cleaning brush and is carried inside the cleaning
unit. As the brush turns inside the cleaning unit, it rubs against
which dislodges the toner particles. The toner particles fall onto the toner
collection coil [C].
The toner collection coil transports the used toner to the front of the machine
where it falls into the used toner bottle.
[ c l
2-52
B ]
A ]
a
beater ridge,