I. OPERATION
A. Outline
The upper roller, lower roller, and delivery roller 1 are driven by the main motor (M1),
and the delivery roller 2 is driven by the delivery motor (M6).
The copier’s upper roller is heated by two fixing heaters (H1 : 750 W (220 / 240 V) /
700 W (120 V) ; H2 : 640 W (220 / 240 V) / 600 W (120 V)), and its surface temperature
is monitored by a thermistor (TH1).
The DC controller turns on and off the fixing heater drive command (MHRD, SHRD)
based on the fixing temperature signal (TH1, analog) from the thermistor.
The control temperature and the area of heating during copying are varied according
to the following:
• Copy paper size (width)
• Number of copies (continuous copying)
Figure 6-101
CHAPTER 6 FIXING SYSTEM
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
6-1
SSR
Thermistor (TH1)
Thermoswitch
(TSW)
H1
H2
Cleaning belt
Fixing
roller
Cleaning belt
guide plate
Delivery
roller 1
Delivery
roller 2
One-way
clutch
Cleaning belt solenoid
cleaning belt solenoid drive command (CBSD
*
)
fixing thermistor signal (TH1)
+24VB
power switch off command (PWOFF
*
)
AC power
main heater drive
command (MHRD)
sub heater drive
command (SHRD)
main SSR drive
signal (MSSRD)
sub SSR drive
signal (SSSRD)
DC
controller
PCB
SL4
Содержание NP6330
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