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1) 2)
1) Type
910: 24 columns
911: 40 columns
2) Knob
SS: No knob
HS: Horizontal knob
VS: Vertical knob
MD-910-SS
Type Classification
58mm paper width
5V operation
2.5 lines/sec printing speed
Ultra compact design
Specifications
Model MD-910 MD-911
Printing method Serial impact dot matrix
Printing direction One-way printing
Printing speed Approx. 2.5 lines/sec
Number of columns 24 columns: 144 dots/line
Font 5 7 matrix
Number of wires 8 pins (4 pins 2 heads)
Character size (W H) Approx. 1.7 2.4mm
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 V DC / Resistance: 1.7 ±0.3Ω(25°C)
Paper feeding solenoid Voltage: 5.0 V DC / Resistance: 9 ±2Ω (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
External dimensions 90 45.5 16mm(W D H)
Weight 105g ±10%
Operating temperature 0 ~ 50°C
Storage temp. range –25 ~ 70°C
Reliability MCBF: 1.5 million lines
Approx. 1.8 lines/sec
40 columns: 180 dots/line
4 7 matrix
Approx. 1.1 2.4mm
1.17mm (Interval of columns)
/ 3.52mm (Interval of lines)
Approx. 3.6 lines/sec
MCBF: 1.0 million lines
MD-910 / 911
mm
58
Paper Roll
Interface Parallel and serial
Number of columns 40
Font 4 7 (including half dot)
Command set Unique
Firmware location Masked CPU
Buffer 1 line
Supporting devices LF switch, On-line switch
Dimensions 80 55.5mm
Source voltage 4.0+0.7/–1.0V
Custom control chip 909PC-4DU
Accessories
Control board
CBM-909-4D
(Only for MD-911)
Control chip
909PC-4DU
(Only for MD-911)
Impact Dot Matrix Printer Mechanisms
Ink ribbon
IR-91, IR-91L(Long life)
Paper winder
AW-5
(not supported by CBM-909)
Despite the growth in demand for thermal printers, dot impact printers are still most
appropriate for many applications and worldwide demand remains strong. Particularly
well-suited to plain paper and high-speed printing, they are indispensable for check and
validation and other such applications. As in its thermal printer development, Citizen
Systems makes the most of its precision equipment technologies in the development of
dot impact printers, drawing on its formidable strengths in this area to offer products that
satisfy customers’ dot impact printing needs fully and accurately.