1-28
CHAPTER 1 GENERAL DESCRIPTION
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
I. Fixing (step 7)
Figure 1-613
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)
Figure 1-614
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.
Cleaning belt
Sub heater
Main heater
Upper fixing roller
Copy paper
Lower fixing roller
Cleaning blade
Vane
Scoop-up sheet