[denton-scratch]

Tektronix did a range of printers that used wax. They used rolls of wax sheet. They produced fantastic output, but the rolls of wax were really expensive. And if you put a coffee mug down on a printout, they got stuck together.

I think they were meant for one-off proofs of image-heavy marketing material. The colours were intense and vibrant, in a way that no colour laser or ink-jet ever is. Also, the wax stood a bit proud of the paper, giving an embossed look. But they weren't very permanent - if you folded the printout you'd damage the image; you could even scratch the wax off with a fingernail.

These were expensive printers.