Controlling The Control Temperature; Controlling The Temperature During Pre-Heat Mode - Canon NP6330 Service Manual

CHAPTER 6 FIXING SYSTEM

3. Controlling the Control Temperature

The control temperature for the fixing roller in continuous copying is lowered in steps
according to copy size and the number of copies to make.
The count of copies used for temperature control is increased by 1 for each passage
of copy paper over the delivery sensor (PS11), and the control temperature is switched
when the count reaches a specific number.
The count is retained for 1 min after the end of copying operation (end of LSTR); if
copying operation is resumed during the period, the count is continued and appropriate
control is performed. (The count will be cleared, however, if a change is made to the copy
paper size or the power is turned off.)
Power switch COPY START key
ON
Main motor (M1)
Fixing main
heater (H1)
Fixing sub
heater (H2)
190
185
180
175
170
( c )

4. Controlling the temperature during Pre-heat mode

This copier alters the control temperature for the fixing assembly in the Pre-heat
mode according to the setting in the user mode. The following is the control temperature
for the fixing assembly for each setting in the user mode.
Saving rate
Reference:
In the Auto energy saver mode, the control temperature for the fixing assembly is
145 °C/293F.
6-4
ON
WMUP WMUPR STBY SCFW SCRV
*1
5 sec.
*1
*1: Turns on the main heater for 0.1 sec and the sub heater for 1 sec alternately.
Figure 6-202
Control
-10% 185 °C/365F
-25% 170 °C/338F
-50% 125 °C/257F
None 190 °C/374F
COPYRIGHT © 1997 CANON INC.
40th 90th 150th
copy copy copy
SCFW SCFW SCFW
target temparature
Recovery (approx.)
10 sec
20 sec
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
200th
copy
SCFW SCRV LSTR STBY
*1
*1
: A3,A4,11"~17"
: A4R,LGL,LTRR
: B4,B5,LTR
: B5R or less
5 sec
0