drivers all have to match
so in start menu, then devices go to z3100, printer properties, advanced tab, printer defaults then select your settings
then in printer properties, general tab, preferences, select your settings,
then in whichever application you're using choose the settings as you would.
If it doesn't stick then, you have just experienced a moment of "what the heckin hey with this quirky software?
I check every time I print...
if you don't you risk... well you know, you're the one asking...