A4 Inkless Thermal. ①5 print size options:US Letter/A4/4"/3"/2" (216mm/210mm/107mm/77mm/56mm) width thermal paper. ②Thermal Printer:Don't require ink,toner,or ribbons,no ink. ①5 print size options:US Letter/A4/4"/3"/2" (216mm/210mm/107mm/77mm/56mm) width t….
