AcuLaser M2000D/M2000DN/M2010D/M2010DN Revision B
OPERATING PRINCIPLES Technical Explanation of Print Process 24
Confidential
2.2.5 Cleaning
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 surface making the residual charge on the drum surface
escape to the ground.
Figure 2-14. Cleaning section
Figure 2-15. Cleaning section block diagram
Main frame
Waste toner reservoir
Drum unit
Eraser lamp (PWB)
Sweep roller Cleaning blade
ERASER
YC816-1
Drum
Eraser
lamp
(PWB)
Main Board Assy.
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