2.2.11. Fusing
Fusing Lamp Control
When the main switch is turned on, the machine turns on the fusing lamp
and raises the fusing temperature to 80
°
C in about 6 s. For printing, the ma-
chine raises the fusing temperature to 185
°
C.
When the Power Saver Key is pressed or the power saver timer expires, the
machine goes into a power saver mode. In Level 2 Power Saver Mode, the
fusing lamp is turned off. For Power Saver Mode Level 1, the user can select
whether to keep the fusing lamp off, or at 80 °C or at 145 °C.
Cross Reference:
Power Saver Modes: Section 2-3
If the printing operation continues for more than 3 minutes, the machine
keeps the fusing temperature at 175
°
C.
Points to Note:
•
Standby temperature: 145
°
C
•
Printing start temperature: 160
°
C
•
Printing temperature: 185
°
C (monitored by a comparator)
•
Thermistor maximum: 250
°
C
•
Thermostat maximum: 150
°
C (the temperature of the hot roller would
be about 400
°
C)
•
Thermofuse maximum: 169
°
C (the temperature of the hot roller would
be about 400
°
C) - The thermofuse is not used in USA models.
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80°C
160°C = Print ready
185°C
175°C
Room temp.
Ring
Detection
or
Copy Start
Fusing
ON
OFF
Print Start
3 minutes
5 minutes (= Power saver timer)
145°C, 80°C
or
Room Temp
Power ON
Temperature
145°C
H521D654.wmf
May 22nd, 1995
DETAILED SECTION DESCRIPTIONS
PRINTING
2-51