2 Product Specifications
SAM4S ER-420M/F SERIES 2-3
2-3 Thermal Printer Specification
2-3 A. Printer Specification
Item
Description
Remark
Model
• STM-320
Print Method
• Thermal Line Printing
Total number of dots
• 640 Dots / Line
Printing Format
Dot Pitch
• Vertical : 0.125 mm (8dots/mm)
• Horizontal : 0.125 mm (8dots/mm)
Printing Speed
• 75 mm/Sec ( 20 Line/sec)
Printing Direction
• Unidirectional Friction Feed
Feeding Method
• Friction Feed
Minimum Feed Pitch
• 0.125 mm
Paper Feeding
Feeding Speed
• 75 mm/Sec (20 Line/sec)
Power Voltage
• 24.0V (Recommend)
Head/Motor
Power Supply Volt
Circuit Input Voltage
• 5V
Head Control/Sensor
Heat Element Density
• 8 Dots/mm (230dpi)
Total Head Elements
• 640 Dots/Dot Line
Available Printing Width
• 38.0mm x 2
Printer Head
Heat Element Typical Ω • 800 Ω ±3%
Line Feed Motor
• 2-Phase 20 step Stepping Motor
Head Temperature
• Thermistor
Sensor
Paper-End Sensor
• Reflecting Photo Sensor
2pcs
Life
• 15,000,000 Lines
Reliability
MCBF
• 37,000,000 Line
Dimension (mm)
•131.8(W) ×174.2 (D) ×135.7 (H)
Weight
• Approx. 408.0 g
Table2-2 Thermal Printer Specification