Turning On And Off The Separation/ Pre-Transfer Corona Current; Separation Corona Current (Dc Component); Pre-Transfer Corona Current (Dc Component) - Canon NP6045 Service Manual

2. Turning ON and OFF the Separation/ Pre-Transfer Corona Current

The separation corona current and the pre-transfer corona current are turned ON
and OFF by the HVTAC drive signal (HVP.POST.AC), roller electrode drive signal
(ROED), and high-voltage DC drive signal (DCON).

3. Separation Corona Current (DC component)

For the output control value, the direct current of the separation corona current (DC
component) is varied according to the voltage level (3 to 11 V) of the HVSCT signal.

4. Pre-Transfer Corona Current (DC component)

The control value of the pre-transfer corona current (DC component) is varied
according to the voltage level of the HVP.POST.DC signal.
COPYRIGHT © 1997 CANON INC.
Pre-transfer corona current
( A)
-500
100
3
HVT.POST DC signal voltage level (V)
Figure 4-114
Pre-transfer corona current
( A)
-330
0
3
HVT.POST DC signal voltage level (V)
Figure 4-115
CANON NP6045 REV. 1 MAR. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
11
11
4-15