Bottom Plate Mechanism - Ricoh FT7770 Service Manual

30
April, '89

Bottom Plate Mechanism

5.
tray bottom plate usually contacts the pick-up rollers, but it
The duplex
drops down when the Start key is pressed for the first side copy. First, the
bottom plate solenoid turns on and the bottom plate clutch turns 180°, caus-
ing the bottom plate cam to push down the pressure arm lever.
pressure arms move down, allowing the bottom plate to drop down.
After the final copy arrives, the solenoid turns off, allowing the clutch and
cam to turn 180° back to their original positions.
pressure arm lever and the pressure arms raise the bottom plate. As the
bottom plate moves up, it shifts slightly toward the rear and presses the
front side plate against the stacked copies. This happens at the same time
that the rear side plate moves against the stack, so the copies are jogged
from both sides at once.
skew.
When the bottom plate moves up, it lifts up the diagonal roller so that it
will not interfere with paper feeding.
The duplex tray also has a manual
When the release handle is turned
shifts it slightly toward the front.
(Rear View)
This helps to square the copy stack and reduce
release handle to facilitate jam removal.
clockwise, it drops the bottom plate and
2-98
Then, the
The cam releases the