Toshiba e-STUDIO2500c, Service Manual, Page: 91 / 402

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May 2006 © TOSHIBA TEC e-STUDIO2500c/3500c/3510c COPY PROCESS
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9) (+) Discharging process
Eliminating the (+) charge on the photoconductive drum applied during the transfer stage.
- Elimination of transfer charge
With this OPC photoconductive drum, (+) charge on their surface cannot be eliminated optically.
Therefore, (–) voltage is applied to the conductive recovery blade, which is pressed against the
drum, to eliminate the (+) charge applied at the transfer process.
Fig. 3-20
10)Cleaning
The edge of the cleaning blade is pressed against the photoconductive drum surface to scrape off
residual toner. The toner removed is then caught by the conductive recovery blade in order to pre-
vent the toner from scattering to outside of the cleaner.
Fig. 3-21
800V
± 800V
0
Elimina-
tion of
transfer
charge
Surface potential of photoconductive drum
Transfer Discharge Charging
Cleaning blade
Conductive recovery blade
Drum rotation