Pressure Release Mechanism; Temperature Control - Ricoh G165 Service Manual

[B]. This is because the duplex motor controls paper exit and feed in the duplex.
The paper exit sensor [C] detects the trailing edge of the paper to determine the stop timing
for the transport/fusing motor, reverse timing, and stop timing for the duplex motor. It also
checks whether a paper jam occurs at the fusing unit or paper exit.

6.7.3 PRESSURE RELEASE MECHANISM

The springs always apply the correct pressure to the nip between the pressure roller and
hot roller. When releasing the pressure release levers, the pressure roller moves away
from the hot roller. If a paper jam occurs in the fusing unit, releasing these levers make it
easy to remove jammed paper.

6.7.4 TEMPERATURE CONTROL

The fusing unit has these components for temperature control:
The fusing thermistors [A] [B] send a signal when the fusing temperature goes past the
threshold.
The central thermistor [A] is the one that is used for fusing temperature control.
The fusing thermostat [C] breaks the electric circuit when the fusing temperature goes
past the threshold. The thermostat is on the same electrical circuit as the fusing lamp,
so the fusing lamp goes off if the fusing thermostat breaks the electrical circuit.
SM 6-41 G165/G166/G167/G181/G183/G184
Fusing and Exit