Ricoh G133 Service Manual page 748

Duplex Unit
6.11 DUPLEX UNIT
6.11.1 OVERVIEW
1. Duplex inverter plate
2. Duplex entrance sensor
3. Duplex inverter rollers
The duplex inverter rollers move the paper to the inverter path, and then feed it backwards
to the duplex paper feed path. The duplex transport rollers move paper to the waiting
position (just before the duplex/by-pass transport roller).
The duplex/by-pass transport roller moves the paper to the registration roller. This roller is
also used for by-pass mode as the by-pass transport roller. But the by-pass tray cannot be
used with duplex mode.
The duplex entrance sensor and duplex exit sensor control the timing for duplex paper
feed.
G133
4. Duplex transport rollers
5: Duplex exit sensor
6. Duplex/by-pass transport roller
6-76 SM