Controlling The Transfer Unit Charging Mechanism - Canon 1000 Service Manual

3. OPERATION AND TIMING
G. Controlling the Transfer Unit Charging Mechanism
1. Outline
Figure 3-554 shows the construction of the transfer unit. The transfer current to the transfer blade, static
eliminating current to the internal static removing roller, and the charging current to the separation charging
corona wire and the pre-fixing charging corona wire are all controlled by the control signals from the DC
controller. An AC bias and a DC bias are applied to the separation corona wire; only a DC bias is used for all
others.
HVT5
Pre-fixing charging
assembly
3-122
COPYRIGHT © 2001 CANON INC.
DC controller PCB
HVT4
Separation charging assembly
Internal static
removing roller
External static
removing roller
Figure 3-554
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
HVT1
Transfer
blade