Printing from emacs on windows

Anyone have any idea why my new Konica-Minolta 1350W won't print from emacs on Windows? I've tried manually setting the printer name, using the network name, using printing.el, and a bunch of other things to no avail.

Everytime I try to use print-buffer it tells me it's "spooling with options (print headers are not supported)...done"

My old printer worked fine.