Cleaning Section - Kyocera FS-2020D Service Manual

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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 cleaning
roller. The waste toner is collected at the output end of the drum screw and sent to the waste toner box.
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.
Engine PWB
YC504-8
Figure 2-1-15Cleaning section
(1) Cleaning blade
(2) Cleaning roller
(3) Drum screw
(4) Drum frame
(5) Eraser lamp (PWB)
ERASER
Connect-L
PWB
Figure 2-1-16Cleaning section block diagram
Eraser lamp (PWB)
Drum
PWB
Drum
Drum unit
2J0/2J1/2J2
Ground
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