Ricoh Gestetner 5450, Service Manual, Page: 105 / 315

1 July, 1998 PAPER DELIVERY
2-77
Detailed
Descriptions
2.8.2 PAPER SEPARATION FROM THE DRUM
Exit Pawl Drive Mechanism
The exit pawl [B] guides the center of the paper. This prevents the paper from
wrapping around the drum. As the drum rotates and the master clamper
approaches the exit pawl, the exit pawl moves away from the drum.
As the main motor [E] turns, the exit pawl drive gear [D] turns. This gear contains a
cam [C]. The cam follower on the exit pawl lever [A] rides on the cam. The exit
pawl is connected to the exit pawl lever.
The lever turns clockwise when the cam follower rides on the high point of the cam,
and the exit pawl moves away from the drum. This happens when the master
clamper on the drum is approaching the exit pawl.
When the master clamper moves away from the exit pawl, the cam follower is now
riding along the low point of the cam. Therefore, the exit pawl moves nearer the
drum surface due to tension from a spring.
When printing pressure is not applied, the exit pawl is held away from the drum.
Air Knife Mechanism
There are two air knife fans [F] above the
paper delivery unit. These fans blow air
against the leading edge of the paper that
is just fed from the drum. This helps to
separate the paper from the drum.
C229D027.WMF
C229D028.WMF
[A]
[B]
[C]
[D]
[E]
[F]
Rear
Front