Canon imageRUNNER ADVANCE 8105 Series Service Manual page 579

Checking nip width
In the case of paper wrinkle or fixing failure, check that the fixing nip width is within the
specified range. Note that the fixing nip width of this equipment cannot be adjusted in the
field.
1) Print approx. 20 sheets of A4 size paper.
2) Make a solid black print (setting value: 7) in COPIER > TEST > PG > TYPE.
3) Set the output of step 2 on the Multi-purpose Tray while placing the printed side down.
4) COPIER > FUNCTION > FIXING > NIP-CHK
A sheet is stopped once in a state held by the Fixing Nip area, and is delivered approx. 20
seconds later.
5) Measure the nip width of delivered sheet.
If the nip widths are as follow it is judged as normal: 7.0 to 8.0 mm at the center (b), and
difference between front(a) and rear(b) is within 0.5 mm.
In the case of failure, check if there are any damaged parts (*), and replace the damaged
parts (if any).
* Gear, Bearing, Fixing Roller, Pressure Roller and Fixing Assembly
Edge
Center
Edge
6
Troubleshooting > Other > Checking nip width
Nip width
a
b
c
Paper feed direction
F-6-58 F-6-58
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Troubleshooting > Other > Checking nip width
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