This machine uses a counter blade and brush system.
• The drum cleaning blade [A] contacts the drum, and is angled against the direction of rotation to
improve cleaning.
• The cleaning brush [B] rotates and removes some toner from the drum, and collects the toner removed
by the cleaning blade.
• The mylar [C] scrapes toner from the cleaning brush.
• The toner collection coil [D] receives the toner that falls from the mylar and transports it to the toner
collection bottle.
• A cam [E] moves the cleaning blade [F] slightly from side to side to prevent it from scouring the drum.
• At the end of every job, the drum reverses about 10 mm to remove toner that has collected at the
edge of the counter blade.
• The drum motor drives the cleaning unit, as described in an earlier section.
Drum Unit
453
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