... 24 Column capacity Font A : 48 columns Specification:Printing Method Thermal line Paper Path Curve or Straight or Drop in Print ... 11 Graphic Interface RS -232 / IEEE 1284 Bi-directional parallel, USB Data buffer 4KB Print Speed (Max.) 150 mm / sec.Paper ... ) Reliability MCBF 37,000,000 linesReceipt printing - Printer life Mechanism : 15,000,000 lines , Thermal head : 100 km (62.14 miles )Overall ...