Image Fusing
SM 6-59 G179
Detailed
Descriptions
6.13.8 FUSING TEMPERATURE CONTROL
The fusing unit has two fusing lamps: the first fusing lamp (ends: 750 W) [A] heats the
center of the fusing roller, and the second fusing lamp (center: 550 W) [B] heats both ends
of the hot roller. This arrangement ensures even heat on all surfaces of the roller.
In order to control the temperature of the roller, two high response thermistors are attached
to the unit, one near the center [C] and one at the end [D] of the hot roller.
Temperature Control
There are two types of temperature control:
On/off control (Default)
Phase control.
Either mode can be selected with SP1104 (Fusing Temperature Control).
After the machine is powered on, the CPU checks the AC frequency for 500 ms, in case
phase control is selected later for the temperature control, and then switches on the fusing
lamp.
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