A few weeks ago I posted a question for help on the settings for the Oki 5500N printer. We finally have ours figured out. Our problem was it wasn't getting hot enough before we printed our transfers on Laser One Opaque for dark.
By doing the settings on the computer, it over rides the ones on the printer itself. When you have your design ready to print, go to print preview and set the paper weight to Ultra Heavy. That sets it automatically to use the top MP Tray. Feed straight thru to the back. Then go to job options and set it for fine detail. Run 2 or 3 blank pages thru to warm it up. Then print your transfer. Ours comes out very nice. Hope it helps someone else.
Oki 5500N Figured Out !!!! 
