PCDU
SM 7-47 D0CA/D0C9/D0C8/D0CB
7.6.2 OPC DRUM
Callout Item Callout Item
[A] Waste Toner Transport Coil [F] Charge Roller Cleaning Roller
[B] Lubricant Brush roller [G] OPC Drum
[C] Lubricant [H] Image Transfer Belt (ITB)
[D] Drum Cleaning Blade (Counter
Rotation)
[I] Image Transfer Roller (1st Transfer
Roller)
[E] Charge Roller - -
A charge roller [E] charges the surface of the OPC drum [G] and drives the charge roller
cleaning roller [F].
This machine uses an organic photo conductor drum (OPC drum) [G] for image
creation.
The laser from the laser unit forms an electrostatic latent image on the OPC drum (exposure),
and the toner supplied from the developing unit adheres to the OPC drum (development). The
toner on the OPC drum is transferred to the image transfer belt [H].
The drum cleaning blade [D] is mounted in contact with the OPC drum [G] in a direction
opposite to the drum rotation, and scrapes off the toner.
OPC drum cleaning and lubricant application are done at the same time.
The lubricant is applied with the lubricant brush roller [B].
The lubricant brush roller [B] rotates in the opposite direction to the OPC drum [G].
Toner and foreign objects are removed from the edges of the blade by rotating the drum
counterclockwise when a copy job is done.
The waste toner collected by the drum cleaning blade [D] is transported to the front of the
machine by the waste toner transport coil [A] and deposited in the waste toner bottle.
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