There are three waste toner paths in this machine.
- Upper Waste Toner Path
The waste toner [B] from the drum cleaning unit and the used developer [A] from the development unit are transported to the upper waste toner path.
- Vertical Waste Toner Path
The waste toner and paper dust [C] from the ITB cleaning unit are transported to the vertical waste toner path.
The waste toner and paper dust [D] from the paper transfer belt cleaning section are transported to the vertical waste toner path.
- Lower Waste Toner Path
The waste toner, used developer, and paper dust fallen from the vertical toner path are transported to the waste toner bottle [E].
When the transport coil [B] is clogged and cannot rotate while transporting the waste toner, the waste toner lock sensor [F] detects this, and the machine stops the waste toner collection motor [G]. Then SC488 (Machine Waste Toner Lock Detection Error) is displayed on the operation panel.
When the torque of the transport coils in the waste toner path increases while transporting the waste toner, the torque limiter slips. Then the waste toner lock sensor [F] detects the torque increase and the machine stops the waste toner collection motor [G]. Then SC488 (Machine Waste Toner Lock Detection Error) is displayed on the operation panel.