COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
6-23
CHAPTER 6 IMAGE FORMATION SYSTEM
E. Controlling the External/Internal Static Eliminating Current
1. Operation
The external/internal static eliminating control mechanism has the following items of control:
1. Controlling the static eliminating current to a specific level.
2. Turning on/off the high-voltage output.
Each of the signals is used for the following:
[1] HVIOC (external/internal static eliminating current AC component ON/OFF control
signal)
When ‘1’, the static eliminating current AC component output is ready.
[2] HVIDCC (internal static eliminating current DC component ON/OF control signal)
When ‘1’, the static eliminating current DC component output is ready.
[3] HVIDCI (internal static eliminating current DC component level control signal)
Controlled to +3 to +11 V; at +11 V, the high-voltage output is generated.
For related error codes, see D. “Controlling the Separation Charging Current.”
Figure 6-305
J1012
-B5
J421
-9
T102
[1]
[2]
[3]
HVIOC
HVIDCC
HVIDCI
-B7
-B6
-7
-8
T102
DC driver PCB
HVT-AC PCB
External static
eliminating charge
Internal static
eliminating charge
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