Thanks so much for responding.
The M3320 itself is working just fine on both Mageia 6 and openSUSE Tumbleweed. The problem seems to be with enscript being unable (or perhaps unwilling??) to recognize any font other than those defined in /etc/enscript/font.map, which are the PS fonts resident in the printer itself. I can't seem to get off this treadmill.
Both operating systems behave in the same way. That is true whether I configure the printer with cups alone or with Samsung's ULD along with cups.In /etc/enscript.cfg I have continued to change PostscriptLevel from 2 to 3, changed the printer ID from '#Printer
s' to 'Printer: M3320' and uncommented '# SetPageDevice
Uplex:True' because they all work as expected.
Have also looked at posts suggesting I need to somehow add /usr/share/fonts/TTF/Inconsolata/Inconsolate.otf to enscript's font.map so it can find it, but I'm confused about how to do that. The whole idea, of course, is to use Inconsolata fonts for coding. The GNOME desktop tweak-tool handles that task with ease. Again, everything seems to point to enscript's undefined needs.
Thanks again for offering your help.