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Note:
a and c are the dimensions
15mm
(0.6")
from each edge.
Di
'
Measure after the upper and
imension
lower rollers have heated up.
b
4.0+0.5mm (0.16"+0.008")
ja-c|
0.5mm or less
Table 4-1
a. Measuring the nip width
If the rollers are cool, wait 15 minutes
' beyond when the copy START indicator
begins glowing green, make 20 copies,
then measure the nip width.
b. Measuring procedure
1) Raise the copyboard cover and make an
A3 Ledger size solid black copy.
2) When
the leading
edge
of the copy
paper first appears at the delivery port,
set the power switch OFF, and open the
front door and the paper delivery unit.
3) Turn the fixing unit knob very slightly
counterclockwise stop it in that position
for 15 seconds,
then
turn the knob
again to deliver the paper completely.
4) Measure
the width
of the toner area
with
a glossy
surface,
as shown
in
Figure 4-79.
6. Installing the Thermistor
Confirm that the sensor surface of the
thermistor
is touching
the surface
of the
upper fixing roller evenly.
For reference:
There is no need to adjust the position of
the thermistor.
If the thermistor is not touching the upper
fixing roller evenly, check if the thermistor
spring is deformed.
Thermistor
spring
fixing
roller
Thermistor
Figure 4-80
COPYRIGHT © 1988 CANON INC,
CANON NP-1215 REV.O MAR. 1988 PRINTED 1H JAPAN (IMPRIME AU JAPON}
7. Installing the Thermoswitch
Confirm that the sensor surface of the
thermoswitch is touching the surface of the
upper fixing roller evenly.
For reference:
There is no need to adjust the position of
the thermoswitch.
If the thermistor
is not
touching
the
upper
fixing
roller
evenly,
check
if the
thermoswitch
spring
is
deformed.
Mounting
Thermoswitch
thermoswitch
spring
Thermoswitch
Upper
fixing
roller
Figure 4-81
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