21 May, 1999
PRINTING
2-13
Detailed
Descriptions
Development Bias
The power pack [A] applies one voltage to the toner application roller [B] and toner
metering blade [C], and a different voltage to the development roller [D].
Bias Control (During Printing)
The power pack applies a charge of -650V to the toner application roller, and
-400V to the development roller. Toner transfers from the toner application roller to
the development roller and on to the laser-exposed areas on the drum as shown
below.
H547D518.WMF
Development Roller
Toner Application Roller
G N D
- 750V
- 400V
- 650V
- 200V
Print Data
W h i t e
B l a c k
Drum Surface Voltage
T o n e r
D r u m E x p o s e d A r e a
H547D531.WMF
[A]
[B]
[C]
[D]
