MINOLTA-QMS PagePro 4100 Series, Service Manual

Page: 68 / 126

53
3-10. Duplex Unit (Option)
The Paper Exit Roller is connected to the Switchback Motor (M41) by the connection
lever and gear when the Duplex Unit is installed to the printer.
For simplex printing
The printed paper passes the Paper Exit Sensor and is discharged by the Paper Exit
Roller.
For duplex printing
Paper with an image printed on one side is transferred by the Paper Exit Roller until the
paper passes the Paper Exit Sensor. The Switch Back Motor (M41) then rotates backward
to feed the paper to the Duplex Unit. The paper is transferred to the Register Roller by the
Transfer Motor (M42). Paper tilt is checked and corrected by the Paper Exit Sensor
(DUP_PS1) and the paper is fed to the Transfer Section by the Register Roller. Printing is
performed on the rear side and the paper is discharged by the Paper Exit Roller.
1 Switchback Motor (M41) 2 Transfer Motor (M42)
3 Resister Roller 4 Paper Exit Sensor (DUP_PS1)
4
3
2
1
M41
M42