Ricoh SAVIN D0AP Service Manual page 619

Image Fusing
Fusing Pressure Automatic Release Mechanism
This machine is provided with a new fusing pressure/release motor (M2) which controls the
opening and closing of the nip between the hot roller and pressure roller.
The hot roller [A] and pressure roller [B] are pressed together by two large springs. The lift cam
[C] is provided to shift the position of the pressure lever against the springs to maintain the
pressure. Fusing pressure/release motor (M2) [D] rotates a series of gears which in turn rotates
the lift cam against the lift lever which raises and lowers the pressure roller.
Attached cam feeler [E] rotates, while the fusing nip pressure position sensor (S7) [F] (installed
at the rear) monitors the status at the gap.
SM 7-57 D0AP/D0C4/D0C5/D0C6/M0BQ/M0D1