IMPACT DOT MATRIX PRINTER MECHANISMS
MD-910/911

Classification category		Paper width	Printing speed	Model
Printing color	Single	58mm	2.5/1.8 lines/sec.	MD-910/911
		76mm/76-89mm	3.6 lines/sec.	DP-624
		38 + 38mm	3.0 lines/sec.	DP-630
		45 + 45mm	3.0 lines/sec.	DP-730
	2 colors	76mm	76mm	DP-330
		58/76/80mm	58/76/80mm	DP-331/332
		76mm/76-89mm	76mm/76-89mm	DP-614/617
		76mm/76-89mm	3.6/3.0 lines/sec.	DP-654/657
Paper feed	Friction	76mm	76mm	DP-330
		58/76/80mm	58/76/80mm	DP-331/332
		58mm	2.5/1.8 lines/sec.	MD-910/911
	Friction or Sprocket	76mm/76-89mm	76mm/76-89mm.	DP-614/617
		76mm/76-89mm	3.6 lines/sec.	DP-624
		76mm/76-89mm	3.6/3.0 lines/sec.	DP-654/657
Two station	Friction	38 + 38mm	3.0 lines/sec.	DP-630
Two station	Friction	45 + 45mm	3.0 lines/sec.	DP-730

MD-910/911

58mm
MD-910/911

2.5 lines/sec Printing Speed
MD-910

2.5 lines/sec Printing Speed
MD-911

Model		DP-910	DP-911
Printing method		Serial impact dot matrix method
Printing direction		Bi-directional
Printing speed (lines/sec) *1		Approx. 2.5	Approx. 1.8
Total number of dots (dots/lines)		144	180
Number of columns		24 columns	40 columns
Font (W × H)		(5+1) × 8 matrix	(4+0.5) × 8 matrix
Character size (W × H)mm		1.7 × 2.4
Line spacing		3.52mm
Number of wires		8 pins (4 pins × 2 heads)
Motor		Voltage: 5V +1/-1.2VDC Current: Peak approx. 1A /Average 0.3A or less
Sensor	Reset pulse	Mechanical leaf switch
Sensor	Dot pulse	Photo interrupter
Printing solenoid		Voltage: 5 +1/-1.2VDC
Printing feed solenoid		Voltage: 5 +1/-1.2VDC
Paper feed		Friction
Paper feeding speed (lines/sec)		Approx. 5	Approx. 3.6
Printing paper	Width	57.5mm ±0.5mm × Φ83mm
	Diameter	Φ83mm or lessr
	Thickness	Total 130µm or less
Copy		1 original + 1 copy
Ink ribbon cartridge		Single color (Black)
External dimensions		Two color: 90 (W) × 45.5 (D) × 15.8 (H)mm
Weight		Approx. 105g
Environment	Operation	0 to 50°C
Environment	Storage	-25 to 70°C
Reliability	Mechanism	MCBF 1.5 million lines	MCBF 1.0 million lines
Reliability	Printer head	80 million characters