Thermal paper by USA Paper rolls Exporter is a recording media that thermal printers print on. Pictures from the thermal printer are delivered utilizing heat when the thermal print head contacts the outer layer of the thermal paper. The picture from the printer is moved by nuclear power, which changes the shade of the thermal paper covering to dark. Thermal printing should be possible in little, minimal printers with 3 ⅛" thermal paper, thermal paper rolls 2 ¼", and other thermal paper sizes.