Brother MFC-9420CN - Sending a Fax; How to Fax

Confidential
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[ 2 ] Basic structure of the printing system
A toner image is formed through the potential of the OPC belt varying in each of the charger,
exposure, development, transfer and cleaning processes.
(1) Process of Print System (See Fig.3-10.)
1) The OPC belt is biased to the voltage -CBV(V) by the power supply CBV.
2) A negative high voltage is applied to the charger unit by the power supply CHV, and a
corona is generated as the result.
3) The developer magnetic roller of the toner cartridges is biased to -DBV(V) by the power
supply DBV.
4) The frame potential of the transfer drum is GND.
Fusing Unit FU
Paper Tray PU
OPC Belt
Erase Lamp
PU
Cleaning
Blade
Laser Assy PU
Cleaning Roller PU
Back Cover Assy PU
Transfer Belt
Transfer Roller
Paper Feed
Roller PU
Developer Roller
Registration Roller PU
OPC
Charger
Roller PU
Transfer Unit
Belt Cartridge PU
Toner Cartridge PU
Drum GND
Fig. 3-10