Printer SK4-21/31 is small and compact design, can be setup 3-ways of paper position. Support printing speed 150mm/sec. This model have a LED Bezel option and Anti-paper Jam Bezel option available. If you are looking for a printer which A good balance of performance and cost, can be selectable this model.


SK4-31 Product Sheet


SK4-21 Product Sheet


  • Small and compact design
  • Three ways of paper position support
  • Printing speed 150 mm/sec 
  • A good balance of performance and cost



Printing Method Direct Thermal Line Printing
Resolution 203 dpi (8 dot/mm)
Dimension (W x D x H) SK4-21 : 86 x 150 x 81.7 mm

SK4-31 : 106 x 150 x 81.7 mm

Print Speed 150 mm/sec
Cutter Guillotine Auto-Cutter (Partial Cut)
Paper Width SK4-21 : 58mm

SK4-31 : 80 mm

Print Width SK4-21 : 54mm

SK4-31 : 72mm

Paper Diameter Max. 83 mm
Paper Thickness 0.059 ~ 0.085 mm
Sensor Near end Sensor/Paper empty Sensor, Black mark Sensor/Gap Sensor
Emulation StarPRNT & ESC/POS
Serial (RS-232c) and Mini-USB
Barcode 1D: UPC-A/E, JAN13/8, CODE39, CODE93, ITF, CODABAR, CODE128, GS1 Databar Omni-directional, Truncated, Limited, Stacked, Stacked Omni-directiona

2D : QR Code, MaxiCode, PDF417, Data Matrix

Options LED bezel LB-SK1-1G

Paper dumper for SK4

Paper guide for SK4



MCBF 100 million lines
Print Head 100 km
Auto-Cutter 1 million cuts


Software Supported

Driver Windows 7 32/64-bit SP1

Windows 8 32/64-bit

Windows 10 32/64-bit

Net Framework 4.0 or later



Coming Soon


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