Brother HL-4200CN - Page 72

III-8
+
Drum
-
+
-
-
-
-
+
+
Toner Cartridge ASSY
Magnet Roll
Trimmer Rod
Auger
Auger
Paddle
-
+
: Negative electric charge
: Positive electric charge
: Toner
: Carrier
HVPS
Auger
Agitator
Fig.3-12
Dram surface
Toner image
Fig.3-13
Electric potention
on drum
-V
0
Developing
bias
Fig.3-14