Citizen CT-S310II printer for receipts

The Citizen CT‑S310II is a high-performance direct thermal receipt printer designed with environmental sustainability and cost-efficiency in mind:

• Eco-friendly build: ENERGY STAR®-approved power supply, halogen-free housing, and recyclable packaging materials

• Long-life printing: Patented LLP (Long-Life Print) technology extends print head life up to 200 km or more

• Compact footprint: Measures 140 × 195 × 132 mm and weighs around 1.8–1.9 kg, with a built-in power supply keeping the workspace tidy 

Key Specifications & Features

Print Performance:

• Print speed up to 160 mm/s (~6.3 in/s)

• Print resolution of 203 dpi (8 × 8 dots/mm)

Media Compatibility:

• Supports paper widths of 58 mm, 60 mm, or 80 mm

• Converts easily:

  • 80 mm paper: up to 72 characters (Font C), 64 (Font B), or 48 (Font A).

  • 58 mm paper: up to 52 (Font C), 46 (Font B), or 35 (Font A) characters

Connectivity:

• Dual interface options: USB + Serial (RS‑232C), or USB + LAN, depending on model or regional variant

Advanced Features:

• Automatic guillotine type cutter offering both full and partial cuts with long life and easy jam release

• Cash drawer kick-out support for up to 2 drawers

• Built-in buzzer alerts for operation feedback

• Immune to multiple international safety and EMC standards (e.g. CE, UL, FCC, TUV)

• Warranty: Typically 3 years, including the print head and cutter

Energy Efficiency & Paper Savings:

• Standby and sleep modes significantly reduce power consumption (around 0.18 W in USB power-save mode)

• Built-in paper save mode and multiple paper-saving options to reduce waste

Memory & Emulation:

• Flash memory: 192 KB for characters, 384 KB for graphics; plus user-definable logo storage

• Supports ESC/POS™ emulation and a wide range of character code pages including Katakana and Thai

• Barcode support includes UPC, EAN, Codabar, ITF, Code39/93/128, PDF417, QR Code, GS1‑Databar

Software Support:

• Drivers for Windows (OPOS, JavaPOS, .NET, VCOM), Mac (CUPS), Linux, Android, iOS, Xamarin available via the Citizen website

Summary Table

Verdict

The Citizen CT-S310II is an excellent choice for businesses seeking a high-speed, durable, and environmentally responsible receipt printer. Its compact form, flexibility in paper widths, advanced energy-saving features, and long lifecycle make it ideal for retail, hospitality, ticketing, and kiosk environments that utilize barcode or receipt printing.