Lexmark MS821

Duplex transport drive
1
4
3
2
1 Duplex entry roller
2 Duplex aligner rollers
3 Sensor (duplex path)
4 Motor (duplex)
For duplex print jobs, paper from the redrive rollers enters the duplex entry roller. Aligner rollers along the
duplex paper path feed the paper back to the standard paper path (see
“Main drive” on page 875). The aligner
rollers also align the paper along the reference edge.
The sensor (duplex path) detects the paper as it travels along the duplex path. The motor (duplex) drives the
duplex rollers.
4064
Theory of operation
881