Model  BD2-2220/2221  BD2-2860  BD2-2880/2890  BD2-3880/3890  CBM-505  CBM-606  CBM-626  CBM-909 
Printer mechanism  LT-2220/2320 and LT-2221/2321  LT-286  MLT-288/289  MLT-388/389  DP-555/575  DP-610/612/614/617  DP-622/624/627  MD-910/911 
Interface  Parallel, Serial or USB Parallel and RS-232C  Parallel and RS-232C  Parallel and RS-232C  Parallel, RS-232C, Current loop or TTL  Parallel, RS-232C, Current loop or RS-422  Parallel, RS-232C, Current loop  Parallel and serial 
Number of columns  LT1220/1221: 32/42 LT1320/1321: 48/64  Font A: 32 Font B: 42  Font A: 32 Font B: 42  Font A: 48 Font B: 64  DP-555: 24col., DP-575: 40 col.  DP-610: 23 col., DP-612: 28 col., DP-614: 40 col., DP-617: 40 col.  DP-622: 28 col., DP-624: 40 col., DP-627: 40 col.  MD-910: 24 col., MD-911: 40 col. 
Font  Font A: 12 × 24 dots Font B: 9 × 24 dots  Font A: 12 × 24 dots Font B: 9 × 24 dots  Font A: 12 × 24 dots Font B: 9 × 24 dots  Font A: 12 × 24 dots Font B: 9 × 24 dots  5 × 7 dots  7 × 7 dots (including half dot)  7 × 7 dots (including half dot)  MD-910: 5 × 7, MD-911: 4 × 7 (including half dot) 
Command set  ESC/POS  ESC/POS  ESC/POS  ESC/POS  CBM standard  CBM standard  CBM standard  Unique 
Bar-code  Suppoted  Supported  Supported  Supported         
Firmware location  Flash memory  Masked CPU  Flash memory  Flash memory  Masked CPU  EPROM  EPROM  Masked CPU 
Buffer  4K bytes  2K bytes  2K bytes  2K bytes  1 line  7K bytes or 2 lines  3K bytes or 2 lines  1 line 
Supporting devices  Auto cutter, Paper sensor, Head-up sensor, LF switch, Error LED, Paper out LED  Auto cutter, Paper sensor, Head-up sensor, LF switch, Error LED, Paper out LED  Auto cutter, Paper sensor, Head-up sensor, LF switch, Error LED, Paper out LED  Auto cutter, Paper sensor, Head-up sensor, LF switch, Error LED, Paper out LED    Auto cutter, Auto cutter, Paper end sensor, LED’s (Power/Error/ On-line), Switches (LF/On-line)  Auto cutter, Paper end sensor, LED’s (Power/Error/ On-line), Switches (LF/On-line)  LF switch, On-line switch 
Dimensions (W×D)  90 × 65mm  80 × 80mm  80 × 75mm  90 × 80mm  135 × 95mm(PF), 155 × 119mm(RF)  152 × 114mm  152 × 114mm  80 × 55.5mm 
Source voltage  5 V ±5% and 24 V ±5%  5 V ±5%  5 V ±5%  5 V ±5%  5 V ±5% and 13 ±1.0V  5 V ±5% and 24 ±1.0V  5 V ±5% and 24 ±1.0V  4 V +0.7/–1.0V 
Custom control chip    202PC-04      PC-2A/2O      909PC-2D/4D 
Gate array  202LA-00  202LA-00  202LA-00  202LA-00