Printing method 9 Pins Dot matrix impact Printing direction Bidirectional logic seeking Diameter of wire 0.3 mm Dot density 160×144DPI (maximum) Print speed: 4.6 lines per second (paper width 76 mm, 40 columns) Copy Original + 2 copies Effective printing width 63 mm (paper width 76 mm), 45 mm (paper width 57 mm) Paper feed speed Max:135 mm/s Line spacing Set by the increment of 1/6 inch or 1/144 inch Control panel Touch keys operation, 2 keys and 3 LED indicators