the phasor is a laserjet printer. it shouldnt matter if you use heavy paper.
glossy paper is an ink jet setting because the glossy paper needs less ink.
you also need to put special paper in tray 1 rather than tray 2
then just print to the tray.
it sets the paper type on the actual printer menu rather than the computer.
but i dont believe it will print any differently on glossy paper and i am not even sure that it is rated for it.
xerox color elite ?
on this chart it does show supported.
they have a ppd file for windows on the xerox site but not for mac
unless the pantone color table is it on this page
this is the only definite ppd file i can find and its for windows
if you go to utilities and ppd manager is that where you cant find it ?
did you try changing the paper type on the printer menu on the printer itself ?