Ricoh FT6645 Manual page 126

23 April 1993 DUPLEX
8.2 DRIVE MECHANISM
[E]
[B]
[A]
[D]
[C]
The duplex drive gear [A] transmits drive from the fusing/duplex drive motor
[B] to the duplex unit. This drive is transmitted to the duplex paper feed
section under the control of the duplex feed clutch [C] and transmitted to the
duplex transport section under the control of the duplex transport clutch [D].
The duplex pick-up roller is driven by the gear [E], so this roller continuously
rotates while the fusing/duplex drive motor is on.
2-101