Epson

Epson TM-T20III Thermal Receipt Printer Black, 250mm/s, USB + Parallel, Auto-Cutter

SKU: 

C31CH51A9981

Fitted with a parallel port alongside USB, the Epson C31CH51A9981 is a direct thermal receipt printer that reaches 9.84 in/s at 203 x 203 dpi across a 3.15-inch maximum media width. Roll stock up to 3.27 inches in diameter feeds through a built-in auto-cutter rated for 1,500,000 cuts, while the printhead is rated to 150 km for sustained POS throughput. The unit draws power from an AC supply and measures 5.5 in wide by 7.8 in deep by 5.7 in tall, weighing 3.75 lb. Package contents include a thermal roll, Ethernet cable, AC cable, wall hanging bracket and setup guide, with PC and Mac platform support. A 2-year limited warranty covers the printer.
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Description
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The Epson SpeedFlex Receipt Printer, based on the TM-T20III platform, is a compact direct thermal POS printer engineered for retail, hospitality and kiosk environments that require fast, reliable receipt output. Designed to support high-frequency transactions, it delivers up to 250 mm/sec print speed with sharp 203 x 203 dpi results, integrated partial auto-cutter options and support for common roll widths. Multiple interface options—including USB, Ethernet, serial/RS-232, parallel and wireless variants—facilitate straightforward integration with existing POS systems. With robust lifecycle ratings and paper-saving functionality, the SpeedFlex family reduces downtime and consumable costs while fitting neatly into constrained counter and wall-mounted installations.

Key Features

  • High-speed printing: Up to 250 mm/sec throughput to accelerate checkout and reduce customer wait times.
  • Crisp thermal output: 203 x 203 dpi dot density delivers legible text, graphics and barcodes without ink or toner.
  • Flexible connectivity: Wide interface support (USB, Ethernet, Serial/RS-232, Parallel, Bluetooth and optional wireless) for easy POS integration.
  • Reliable paper handling: Built-in partial auto-cutter with long service life and paper-saving functions to minimize waste and maintenance.
  • Durable, service-ready design: High MTBF and mechanism life ratings plus multiple installation orientations suit busy retail and hospitality counters.

Specifications

  • Brand: Epson
  • Product family / Model: TM-T20III (Epson SpeedFlex Receipt Printer)
  • Print Technology / Method: Direct Thermal / Thermal line
  • Maximum Print Speed: 250 mm/sec
  • Maximum Print Resolution: 203 x 203 dpi
  • Supported Paper Widths: 80 mm, 58 mm
  • Maximum Roll Diameter: 83 mm (approx.)
  • Auto Cutter / Cutter Type: Partial cut / Auto cutter (rated life 1,500,000 cuts)
  • Printhead Life: 150 km
  • MTBF / Mechanism Life: 360,000 hours MTBF; 15,000,000 lines mechanism life
  • Connectivity / Interfaces: USB (Type-B), Serial (RS-232), Parallel, Ethernet, Wireless (802.11 b/g/n/ac) and Bluetooth; drawer kick-out supported
  • Command Compatibility: ESC/POS, ePOS
  • Memory Capacity: 32 MB (variant-dependent)
  • Power Supply / Voltage: External AC adapter; Operating voltage 24 ±7 VDC
  • Power Consumption: Operating 29.5 W; Standby 0.8 W (or 0.1 A standby variants)
  • Data Buffer: 4 kB
  • Noise Level (operation): 55 dB(A)
  • Dimensions (W x D x H): Approx. 140 x 199 x 146 mm (5.51 x 7.83 x 5.75 in)
  • Weight: Varies by variant — approximately 1.4 – 1.7 kg
  • Operating Environment: 5 – 45 °C; 10 – 90% RH
  • Supported Media: Receipt paper (thermal roll), labels (variant-dependent)

Main Features

  • POS: Yes

  • Equipment Format: Desktop

  • DPI: 203 dpi

  • Case color: Black

  • Connection: WLAN/Wi-Fi, Serial, Bluetooth, USB, Ethernet

  • Optional Upgrades: Cutter

  • Printing Technology: Direct Thermal

Technical Specifications
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Technical Information
Recommended Use Receipt Print
Print Color Capability Monochrome
Maximum Mono Print Speed 9.84 in/s
Maximum Print Resolution (dpi) 203 x 203
Application/Usage Desktop
Connectivity Technology Wired
Print Technology Direct Thermal
Interfaces/Ports
Parallel Port Yes
USB Yes
Cutter
Cutter Life 1500000 Cuts
Media Types & Handling
Media Type
  • Receipt
  • Roll Paper
Maximum Roll Diameter 3.27"
Maximum Label Width 3.15"
Power Description
Power Source AC Supply
Physical Characteristics
Height 5.7"
Width 5.5"
Depth 7.8"
Weight (Approximate) 3.75 lb
Miscellaneous
Package Contents
  • TM-T20III Thermal Receipt Printer
  • Thermal Roll Paper
  • Ethernet Cable
  • AC Cable
  • Setup Guide
  • Wall Hanging Bracket
Cables Included AC
Platform Supported
  • PC
  • Mac
Warranty
Limited Warranty 2 Year
Documents
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Product document tmt20iii.pdf C31CH51A9981 Product document tmt20iii.pdf MOD-TM-T20III