2LY/2LZ
2-1-10
2-1-6 Cleaning section
After the transferring process, the drum needs to be physically cleaned of toner which is residual after the development
process. The cleaning blade is constantly pressed against the drum and scrapes the residual toner off to the sweep roller.
The waste toner is collected at the output end of the sweep roller and sent back to the toner container, into the waste toner
reservoir.
After the drum is physically cleaned, it then must be cleaned to the electrically neutral state. This is necessary to erase any
residual positive charge, ready to accept the uniform charge for the next print process. The residual charge is canceled by
exposing the drum to the light emitted from the eraser lamp (PWB). This lowers the electrical conductivity of the drum sur-
face making the residual charge on the drum surface escape to the ground.
Figure 2-1-16 Cleaning section
Figure 2-1-17 Cleaning section block diagram
1
3
2
Main frame
Waste toner reservoir
Drum unit
(1) Eraser lamp (PWB)
(2) Sweep roller
(3) Cleaning blade
ERASER
YC316-1
Drum
Eraser
lamp
(PWB)
Control PWB
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