Ubuntu 16 is a long way from 13, and 18 is current.
I'd dump a ppd into CUPS and go with that, of course a ppd is hard to come across, you can typically rip one out of the Mac or Windows installer, but Xerox hides them with extensions like blah.pp_ instead of blah.ppd
So here is one from the Mac installer modified with the proper ppd extension that should work (I installed it just fine on a Mac 10.8 as a test of the theory after extracting the files on 10.15)
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for posts that resolve your issues. Your feedback counts!Joe Arseneau