Printing method: Direct thermalMedia width: 79.5±0.5mm / φ 80 mmPrint width: 72mmColumn capacity: 576 dots/line or 512 dots/linePrinting speed: 230mm/sInterface: USB + LANLine spacing: 3.75mm (Adjustable by commands)Character size: ANK,Font A:1.5×3.0mm(12×24 dots) Font B:1.1×2.1mm(9×17 dots) Chinese,traditional Chinese:3.0×3.0mm(24×24 dots)