So what is Sublimation Printing? Here is the technical jargon:
Dye-sublimation printing (or dye-sub printing) is a computer printing technique which uses heat to transfer dye onto materials
The end result of the sublimation process is a nearly permanent, high resolution, full color print. Because the dyes are infused into the substrate at the molecular level, rather than applied at a topical level (such as with screen printing and direct to garment printing), the prints will not crack, fade or peel from the substrate under normal conditions.
Dye-sublimation printing yields beautiful and permanent colors that are embedded in the substrate or fabric, rather than printed on the surface. Images on fabric won't fade or crack even after multiple washings.
So... what is it really?
It is permanent, true colors, vibrant and photographs even look like photographs!
Here are examples of sublimation printing.
A brief video showing some more examples.
Here are examples of sublimation printed photo panels