Duplex Printing - Lexmark MS510 Service Manual

The media with the embedded toner image goes through the fuser assembly to permanently bond the toner to the
media. When it passes between the heat belt and pressure roll of the fuser assembly, the combination of heat and
pressure fuses the toner image to the media. The fuser exit roller feeds the media to the paper exit roller and then to
the output bin.

Duplex printing

After the first side of the media has been printed on and is partially fed out to the output bin, the duplex solenoid
activates. This causes the exit roller to reverse its rotation and feed the media, with its trailing edge first, back into the
redrive assembly and then to the duplex paper path. The duplex front and rear deliver rollers move the media through
the duplex paper path, the diverter, the first input roller, and back to the primary paper path. The same process for
printing on the first side of the media repeats, this time for the second side of the media.
# Part
1 Output bin
2 Photoconductor drum
3 Input sensor
4 First input roller
5 Transfer roller
6 Fuser exit roller
7 Fuser assembly
8 Paper exit roller
Appendix C: Theory of operation
311
4514-6xx