The printfunction works in GNU/Linux. Use the install method of a M760.
Setting it up as a Lexmark GDI inkprinter with Ghostscript “stp” driver.
gs -DIVICE=stp -sMODEL=lexmark-z52
All resolutions and quality parameter are available. It is important to use the Lexmark Z52 model. Other models aren't compatible to higher resolutions ober 600×600
Unfortunately Xerox doesn't provide a PPD file by itself so I
had to borrow a Windows computer, download the Windows drivers, and
then copy the xdp4635.ppd file from the Windows host to the
GNU/Linux CUPS server.
Yes. Duplexing works.
Yes, using Gimp-Print and GhostScript. Use the HP LaserJet 4/5/6
PPD as the model within the printer set up.