Transfer Roller Locking/Releasing Control - Canon NP6621 Service Manual

OPERATIONS AND TIMING
L. Transfer Roller Locking/
Releasing Control
1. Outline
The machine's transfer roller is equipped with a
locking/releasing mechanism.
The locking/releasing mechanism operates to
lock or release the transfer roller, thereby preventing
adhesion of toner to the roller under the following
condition:
• During last rotation (LSTR) after making 50 copies
or more.
Transfer roller locking
releasing solenoid
3–56
Figure 3-319
COPYRIGHT © 1998 CANON INC.
Photosensitive drum
Fulcrum
CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Transfer roller
Locking
Releasing