Fixing (Step 7); Drum Cleaning (Step 8) - Canon NP6330 Service Manual

CHAPTER 1 GENERAL DESCRIPTION
I. Fixing (step 7)
After transfer, copy paper is moved between two rollers for fixing of the toner image.
The copier's upper roller is heated by two heaters (halogen lamp).
To prevent jams and toner offset, a cleaning belt impregnated with silicone oil is kept
in contact with the upper fixing roller, thereby cleaning and, while at the same time,
applying silicone oil to the roller by moving the point of contact by a take-up mechanism.
To prevent fixing faults, positive DC bias is applied to the upper fixing roller.
J. Drum Cleaning (step 8)
In preparation for the next copying run, the cleaning blade scrapes off toner
remaining on the drum surface.
Thereafter, the toner is gathered by the scoop-up sheet and collected to the rear by
a vane.
1-28
Sub heater
Copy paper
Figure 1-613
Vane
Figure 1-614
COPYRIGHT © 1997 CANON INC.
Cleaning belt
Upper fixing roller
Main heater
Lower fixing roller
Cleaning blade
Scoop-up sheet
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)