Fusing Temperature Control - Ricoh D014 Service Manual

Fusing Unit

6.10.6 FUSING TEMPERATURE CONTROL

Basic Temperature Control
The fusing unit has four fusing lamps:
Three in the heating roller
One in the pressure roller
The heating roller with its three lamps is the main source of heat for fusing.
The hot roller has no fusing lamp so it applies no heat.
The pressure roller maintains the temperature of the fusing belt while the machine is in
standby mode.
Feedback from the thermistors assigned to each roller is used by the machine CPU to
control fusing temperature.
Temperature Adjustments
The temperature inside the machine is measured with the temperature sensor located near
the used toner bottle. These temperature readings are used to make adjustments based on
the internal temperature of the machine:
If the temperature inside the machine is less than 20°C, all target fusing temperatures
are increased by 5°C.
If the temperature inside the machine is more than 20°C, the standby temperature is
decreased by 5°C.
D014/D015/D078/D079
CÓPIA NÃO CONTROLADA
6-94
CÓPIA NÃO CONTROLADA
SM