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CHAPTER 6 FIXING SYSTEM
B. Controlling the Fixing Temperature
The copier uses two thermistors mounted at the rear ends of the upper roller to monitor
surface temperature. When copies are made continuously using sheets of B4 or less, the
temperature of the area (center) coming into contact with the paper will be lower than the
temperature of the areas (ends) not coming into contact with the paper. To prevent such a
problem, the target temperature is varied in steps to suit the width of copy paper and the
temperature detected by the thermistor during copying operation.
To improve fixing on rough surface paper or tracing paper, a special paper mode (U13) has
been added to user mode, thereby enabling a target temperature unique to these types of paper.
• Paper Width >257 mm
Temperature detected by
thermistor at Start key on
Less than 170 C
170 C or more, less than 180 C
180 C or more, less than 190 C
190 C or more
• 257 mm > Paper Width > 216 mm
Temperature detected by
thermistor at Start key on
Less than 170 C
170 C or more, less than 180 C
180 C or more, less than 190 C
190 C or more
• 216 mm > Paper Width > 182 mm
Temperature detected by
thermistor at Start key on
Less than 170 C
170 C or more, less than 180 C
180 C or more, less than 190 C
190 C or more
6–2
COPYRIGHT © 1998 CANON INC.
Target temperature immediately
after Start key on
General plain paper Paper with rough surface
171 C
196 C
181 C
200 C
181 C
206 C
181 C
209 C
Table 6-101
Target temperature immediately
after Start key on
General plain paper Paper with rough surface
179 C
196 C
188 C
201 C
193 C
206 C
193 C
211 C
Table 6-102
Target temperature immediately
after Start key on
General plain paper Paper with rough surface
177 C
196 C
186 C
202 C
192 C
207 C
200 C
214 C
Table 6-103
Tracing paper
General plain paper Paper with rough surface
161 C
171 C
181 C
171 C
171 C
General plain paper Paper with rough surface
Tracing paper
169 C
178 C
193 C
183 C
183 C
Tracing paper
General plain paper Paper with rough surface
167 C
176 C
200 C
182 C
190 C
CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Target temperature during
continuous copying (upper limit)
Tracing paper
209 C
Target temperature during
continuous copying (upper limit)
Tracing paper
211 C
Target temperature during
continuous copying (upper limit)
Tracing paper
214 C
171 C
183 C
190 C
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