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5. DRUM CARTRIDGE
5-1. PC Drum
• The photoconductive drum used in this printer is the organic photo conductor (OPC)
type.
✽ This is the PC Drum consisting of the Charge Generating Layer and the Charge Trans-
port Layer applied to an aluminum alloy base.
Handling Precaution
The PC Drum exhibits light fatigue after being exposed to light for a long time, which results
in its sensitivity being changed. Always wrap the drum in the PC Drum Cloth or a soft cloth
immediately after it has been removed from the printer. Use utmost care to protect the sur-
face of the PC Drum from contamination.
• Grounding of the PC Drum
✽ The PC Drum ground point is located inside, and in the rear of, the PC Drum. It is in con-
stant contact with the Drum Holding Shaft. When the Drum Cartridge is installed in the
printer, the Drum Holding Shaft contacts the ground plate in the printer. This provides for
assured grounding of the PC Drum through the ground point, Drum Holding Shaft, and
ground plate to the frame of the printer.
1167M007AA
1139M007AA
Charge Transport Layer
Charge Generating Layer
Aluminum
Drum Holding Shaft
Ground Plate
Ground Plate
PC Drum
4131M044AA