Portable thermal label printer New from our partner SPRT comes their versatile 3″ portable thermal label printer SP-L36. This semi-rugged printer can be setup as a 2″ or 3″ printer and is able to accept 58mm and 80mm paper and label rolls with a maximum roll diameter of 50mm. This 8 dots/mm (203dpi) high resolution printer can produce high quality text, graphics and.