Ricoh FT8680 Service Manual page 114

TRANSPORT UNIT AND REGISTRATION 31 July 1995
12.7 DRIVE MECHANISM
[B]
[A]
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[I]
[D]
[C]
[G]
[H]
[E]
[F]
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All transport section rollers (with the exception of the registration roller) begin
to rotate together with the main motor [A]. The registration clutch [B] engages
according to the appropriate registration timing. When the clutch engages,
the registration roller will begin to rotate.
Main motor drive [C] also is transmitted through a joint [D] to the vertical
transport unit drive clutch [E]. The duplex relay roller begins to turn at the
same time.
When the start key is pressed, the vertical transport unit drive clutch [F] turns
on. The relay roller [G] together with the paper tray unit drive gear [H] begin
to rotate.
A one-way clutch is built-in to the duplex relay drive gear [I]. Due to one-way
clutch when clearing a paper jam, there will be no load from the main motor
and the duplex relay rollers will rotate freely.
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