Ricoh FT8880 Service Manual page 129

SECTIONAL DESCRIPTION 5 June 1992
2.3 SHIFT TRAY SIDE TO SIDE SHIFT MECHANISM
[E]
[D]
[A]
[C]
[B]
[F]
[G]
[H]
In the sort/stack mode, the shift tray [A] moves side to side to stagger and
separate sets of copies.
The horizontal position of the shift tray is controlled by the shift motor (dc
motor) [B] and the shift cam (helical cam) [C]. After one set of the original is
copied and delivered to the shift tray, the shift motor [B] starts rotating, driving
the shift cam through the timing belt. The pin [D] fixed to the shift tray base
plate [E] is positioned in the groove on the shift cam, creating the side to side
movement required to stagger copies.
When the shift cam rotates 180 degrees (The tray is fully shifted.), the plate
[F] on the shift cam pushes the actuator [G] of the shift tray half turn sensor
[H] and the shift motor stops. The next set of copies is then delivered. The
motor rotates repeating the same process and moving the tray back to the
previous position.
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