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COPY PROCESS
3
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(9) Cleaning
Cleaning is the process of removing the re-
sidual toner from the photoconductive drum.
The edge of the urethane rubber cleaning
blade is pressed against the photoconductive
drum surface to scrape off the residual toner
on it. The toner is then caught by the recovery
blade.
(10) Discharging
Discharging is the process of eliminating the
negative charge remaining on the photocon-
ductive drum before the next charging pro-
cess.
If the residual charge is not eliminated, the fol-
lowing phenomenon occurs:
The negative charge remains on the photo
conductive drum.
Uneven charge is applied to the drum during
the next printing.
The next print will have a double image.
(The preceding image appears.)
Solution :
The entire surface of the photoconductive
drum is illuminated with light by the discharge
LED array.
The photoconductive drum becomes electri
-
cally conductive.
All of the negative charge remaining on the
photoconductive drum is conducted to the
ground.
Preparation for the next printing is completed.
Cleaning blade
Drum rotation
Recovery
blade
Fig. 3-220
Discharge LED
Photoconductive
drum
Ground
Fig. 3-221
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