Adjusting The Nip (Tightening The Pressure Adjusting Nut) - Canon NP6330 Service Manual

9. Adjusting the Nip (tightening the pressure adjusting nut)

The nip is correct if it is as indicated in Table 6-401; otherwise, adjust it by turning
the bolt.
Note:
a and c are points 10mm from both edges of copy paper.
a. Measuring the Nip
Wait for 15 min after the copier ends warmup; then, make 20 copies before taking
measurements.
1) Place A3 paper on the multifeeder.
2) Open the copyboard cover.
3) Select '403' in nip measurement mode of service mode [4].
4) Press the OK key.
The multifeeder picks up the paper, allowing you to take measurements as shown in
Figure 6-435. (The paper will then be discharged.)
Reference:
The paper will be stopped between the fixing rollers and then discharged about 10
sec later.
5) Measure the nip.
COPYRIGHT © 1997 CANON INC.
Feeding
direction
Figure 6-435
Dimension
Tracing paper
(SM-1); 64/80g
b
paper
|a-c|
Table 6-401
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
c
b
Center of
copy paper
a
Measurement
5.5 ±0.5mm
0.5mm or less
CHAPTER 6 FIXING SYSTEM
6-27