| Model |
MD-900 |
| Printing method |
Serial impact dot matrix |
| Printing direction |
One-way printing |
| Printing speed |
Approx. 2.5 lines/sec. |
| Number of print columns |
24 columns: 144 dots/line |
| Font |
5 x 7 matrix |
| Number of wires |
8 pins (4 pins x 2 heads) |
Character size
(W x H) |
Approx. 1.7 x 2.4 mm |
| Character pitch |
1.98mm (Interval of columns)
3.52mm (Interval of lines) |
| Motor |
Voltage: 5.0V DC
Peak current: Approx. 1A
Average current: 0.3A max. |
| Dot pulse sensor |
Photo interrupter |
| Home pulse sensor |
Leaf switch |
| Printing sensor |
Voltage: 5.0 +0.5 -1.2 V DC
Resistance: 1.7±0.3O(25°C) |
| Paper feeding solenoid |
Voltage: 5.0 +0.5 -1.2 V DC
Resistance: 9±2O(25°C) |
| Connecting method |
Copper foil patterns at 2.54mm pitch |
| Driving voltage |
3.5~5.5V DC |
| Printing paper |
57.5 ± 0.5mm |
| Copy |
Original print + 1 copy |
| Ink ribbon |
Special ribbon cartridge of black or purple |
| Paper feeding speed |
Approx. 5 lines/sec. |
| Weight (approx.) |
105g ± 10% |
Outer dimensions
(W × D × H) |
90 x 45.5 x 16 mm |
| Operating environment |
0~50°C |
| Storage environment |
-25~70°C |
| Reliability |
MCBF: 1.5 million lines |