The waste toner collection coil [A] moves collected waste toner from the ITB (image transfer belt) unit to the entrance [B] of the waste toner bottle. The agitator plate [C] levels the collected waste toner in the waste toner bottle. It is driven by the agitator motor [D].
The waste toner bottle set sensor [E] detects whether the waste toner bottle is set. If it is not set, "Waste Toner Bottle" appears on the LCD on the machine.
The waste toner overflow sensor [F] detects whether the waste toner bottle is full. If is full, "Replace the Waste Toner Bottle" appears on the LCD on the machine. 400 more pages can be printed, then the machine stops.