Technical information

OPERATIONS ANDTIMING B
b. Controlling the DC Bias Voltage Level
The above condition supplies the developing
cylinder with DC biases.
Fioure 3-28 shows the differential amplifier cir-
DCBC varies between 6 and 16 Vas adiusted
cuit, which operates when DCBC is 16 V or less.
Controlling the DC Bias Voltage Level
DCBCis6to16V.
bdifferential amplifier circuit goes ON.
bvariable pulse generator goes ON.
hDC high-voltagetransformergoesON.
DC controller
r---
CT unit is used.
COPYRIGNT 0 1992 CANON ING.
by the copy density key.
I
DCBC
I
6to16V
Development bias
DC component
(black developing
assembly)
Developing bias
DC component
(CT unit)
450 to 430 v
480 to-110 V
High-voltage transformer (HVT)
Figure 3-28
CANON NPZWl/2MO KV.0 MAY 1990 PNINTEO IN JAPAN IIMPAIME AU JAPONI 3-31