[solved] Xerox WorkCentre 5875 on network

This is an interesting case. The only PPD at the Xerox driver site seemed to be embedded in a Windows EXE file -- this may have been complicated to access via, say, Wine. However, I eventually Googled upon an Italian site which provided the generic 5875 PPD, xrx5875.ppd. This version is considered to have only basic functionality, and it was compressed into a ZIP. I was unable to find a full-feature PPD.

Pressing onward, 1) unzip the ZIP to extract the PPD, 2) put the PPD into /usr/share/cups/model, 3) walk to the Xerox and retrieve the machine's IP address from its printer menu (in this case, 192.168.1.101), then....

# cp xrx5875.ppd /usr/share/cups/model/xrx5875.ppd
# chmod 644 /usr/share/cups/model/xrx5875.ppd
# systemctl enable org.cups.cupsd.service
# systemctl start org.cups.cupsd.service
# lpadmin -p WorkCentre5875 -E -v socket://192.168.1.101 -m xrx5875.ppd

After this, if the 5875 is the main copy/printer a person uses at work, they might consider going back into CUPS (http://localhost:631) and setting the Xerox to be the default printer.