Drive; Pressure Unit; Fusing Process - Ricoh G157 Service Manual

FUSING UNIT

6.10.2 DRIVE

The main motor drives the fusing clutch ( 6.1.3). The fusing clutch sends drive
power when it is on.

6.10.3 PRESSURE UNIT

The fusing unit has a pressure roller. The pressure roller presses the pressure-
roller sheet on to the hot roller. As the hot roller turns, the pressure-roller sheet
turns. The paper goes between the pressure-roller sheet and the hot roller.
There are two tension arms on the right side and the left side of the fusing unit.
These arms push the pressure roller to the hot roller. The tension arms are
attached on the frame with two tension bolts and two springs. You can release
these arms by pulling up the two tension levers to remove jammed paper from the
fusing unit.

6.10.4 FUSING PROCESS

The hot roller and the pressure roller are approximately 150°C (302°F) during the
fusing process. The pressure between these two rollers is approximately 300 N.
SM 6-45 G157