For the very best results, you need a good quality photo printer, ink jet or laser, pigment based ink, and a straight line feed. All laser printers use pigment ink (both black and color), only some ink-jet printers do.

The idea that you can't print fabric on a laser printer is totally false. And you DO use freezer paper (the coating is not wax, it's plastic). You can't use the pre-treated ink-jet sheets in laser printers, but untreated fabric is perfectly safe and very easy. Laser printing is how they put photos on T-shirts after all. It's the chemicals in the ink-jet ready pre-treated sheets that burn, not the fabric.

There is a ton of information about printing on fabric available online; in previous threads here on QB, on art quilting sites, on photography sites, even on art supply sites.