ST-EP4 3" Thermal Printer
- outstanding bundle value and reliability

Thermal Receipt Printer

Unmatched bundle value

Thermal Receipt Printer

Serial, USB, or Ethernet

Thermal Receipt Printer

Prints 2D or QR codes


The ST-EP4 is a fast thermal printer that offers an outstanding value and reliability for the retail and hospitality environments. It is built with a world-class print mechanism to meet the high-volume printing applications, and has an MCBF of 60 million lines and an autocutter life of 1.5 million cuts. When implemented with the StealthTouch All-in-one, the ST-EP4 offers our customers an unmatched bundle value.

The ST-EP4 has a compact footprint, that can also be vertically placed on the counter or mounted on the wall. It allows easy drop-in for paper loading, and takes paper-roll diameter of 80mm. Standard connectivity interface is USB and Serial combo, with Ethernet 10/100 BaseT as an upgrade option.

The ST-EP4 prints texts and attention-grabbing logos at the same speed. It also prints 1D and 2D barcodes, such as QR code that can be scanned by a smartphone and linked to a promotional website, a survey site, or digital coupons.

ST-EP4 Values:

  • Cost-effective for high-volume printing
  • Compact design with drop-in paper loading
  • Same print speed for text and graphics
  • Long autocutter life: 1.5 million cuts
  • Prints 1D and 2D barcodes
  • Ethernet 10/100 BaseT option

Ideal for restaurant/bar/retail point-of-sale.


ST-EP4 Data Sheet

Print Method Thermal line printing
Interface Standard: Serial+USB. Option: Parallel, Ethernet 10/100 BaseT
Driver ESC/POS, Windows XP Pro, Windows 7 Pro, POS Ready, OPOS, UPOS,
JavaPOS, Ubuntu 9.04, Fedora 14, open SUSE 11.1
Print Speed (max) 7.9"/sec (200mm/sec) text and graphics
Autocutter Yes (partial, left edge remains)
Paper Dimensions 80mm: 3.13" ± 0.02" x 3.27" diameter (79.5 ±0.5 (W) x 83mm)
58mm: 2.26" ± 0.02" x 3.27" diameter (57.5 ±0.5 (W) x 83mm)
Paper Thickness 55-80 µm
Print Density 180x180 dpi
Column Capacity Font A: 42/30, Font B: 56/40, Kanji: 21/25 for 80/58mm
Font (WxH) 9 x 17, 12 x 24 dots/character
Character Size (WxH mm) Font A: 1.41 x 3.39, Font B: 0.99 x 2.40, Kanji: 3.39 x 3.39
Character Set 95 Alphanumeric, 18 sets International, 128 x 42 Graphic (including user-defined page), Japanese, Simplified Chinese, Traditional Chinese
Barcode 1D: UPC-A, UPC-E, EAN8, EAN13, CODE39, ITF, CODABAR, CODE93, CODE128
2D: PDF417, QR-Code
Data Buffer Receive: 45 bytes or 4KB, selectable; User-defined: 12KB; Macro: 2KB; NV graphics: 256KB; NV user memory: 1KB; Downloadable graphics: 208KB; User-defined page: 64KB
Cashdrawer Port 1 (2 drivers)
Buzzer Yes
Sensors Cover Open, Paper End, Near End (not applicable when wallmounted)
Power Consumption 24 VDC ± 7%, 1.8A (mean)
Reliability MTBF: 360,000 hours
MCBF: 60 million lines
Thermal Head: 6.3 million inches (160 kilometers)
Autocutter: 1.5 million cuts
Environment Operating Temperature: 41° to 113° F (5° to 45° C)
Storage Temperature: 14° to 122° F (-10° to 50° C)
Operating Humidity: 10% to 90% RH
Storage Humidity: 10% to 90% RH
Dimension (WxDxH) 5.51 x 7.83 x 5.95 inches (140 x 199 x 151 mm)
Weight (Net) 3.75 lbs (1.7 kgs)
Color Black, White
Power Supply 100-240V, 50-60Hz, 1.3A
Safety Standards FCC-A, CE, UL, TUV, CSA, VCCI-A, CCC
Installation Standard horizontal, Vertical on the counter, Wallmount
This information is to be used for reference only. Specifications are subject to change without notice. Although the information provided, to our best knowledge, is accurate, we strongly suggest that the customer contacts us to verify and confirm the accuracy of the information generated before finalizing an order/sales. Pioneer POS, Inc. shall not be liable for any claims or losses of any nature, including, but not limited to, lost profits, punitive or consequential damages. The compilation of information on this site is the exclusive property of Pioneer POS, Inc. and protected by U.S. and international copyright laws. Any other use, including the reproduction, modification, distribution, transmission, republication, display of the content on this site without written consent from Pioneer POS, Inc. is strictly prohibited.

Part Numbers

Part No.  
C31CB10722 Serial+USB, Black, US/EU
C31CB10727 Serial+USB, Black, Chinese/Japanese
C31CB10720 Serial+USB, White, US/EU
C31CB10725 Serial+USB, White, Chinese/Japanese
C32C824543 Ethernet 10/100 BaseT interface card