Service manual

Rev. 2.00
- 35 -
SRP-275
3-3 Reference information
3-3-1 Printer Mechanism Specification
Item Description Remark
Model SMP-715 Samsung
Printer method Serial impact type
Printer direction Bi-directional with logic seeking
Printing speed
5.1 lines/sec (9ⅹ7 font 40 columns)
Printing resolution
160(W)ⅹ144(L) DPI
Paper feeding Performed by step motor
Paper
Paper roll : 76±0.5(W)ⅹMax.Ø80 mm
Supply voltage
• 24V±10% : Step motor, head
• 5V±10% : Home position sensor, motor driver IC
Connector
30pin (Dot head, sensor signal, motor control and power input)
LIFE : Approx. 20 million print lines
Reliability Approx. 10 million print lines
Head life Approx. 300 million dots / wire
Weight Approx. 1.1kg (Excluding ribbon cassette, auto cutter)
3-3-2 Printing Specification
Item Description Remark
Printing method Serial impart dot Samsung
Head wire configuration 9 pin serial type (*1)
Dot pitch 0.352mm (1/72”)
Dot wire diameter 0.3mm (0.01”)
Printing direction Bidirectional with logic seeking
Line feed 4.233mm (1/6”) : default setting
Paper feed method Friction feed
Paper feed speed
Approximately 6.2 inches/second
during continuous paper feeding
Characters per line
Characters per inch
Refer to the following table (*2)
Total dot count
(horizontal direction)
• 7×9 font : 400 half-dot positions per line
• 9×9 font : 400 half-dot positions per line
Print speed
• 40 columns, 16cpi : Approximately 5.1 lines/second
• 16 columns, 16cpi : Approximately 8.6 lines/second