Citizen

Citizen CT-S310II Receipt Printers Black, USB + Serial, 150 km

SKU: 

CT-S310II-U-BK

Citizen CT-S310II direct thermal POS printer, 203 dpi, USB + serial interface, black. Cutter-equipped countertop model, 160 mm/s print speed, supports 80 mm media and up to 83 mm roll diameter. 384 KB flash storage, cutter life 2,000,000 cuts, print head life 150 km.
Description
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The Citizen CT-S310II is a robust direct thermal receipt printer designed for demanding POS environments where reliability, speed and compact footprint matter. Ideal for retail, hospitality and quick-service restaurants, this model delivers consistent 203 dpi output at up to 160 mm/sec, integrating easily with point-of-sale systems via USB, serial and Ethernet interfaces depending on the variant. With a built-in auto-cutter, long-life print head and generous memory for graphics and fonts, the CT-S310II minimizes downtime and consumable changeovers while producing clear receipts and kitchen tickets. Its desktop counter-top design and choice of black or white enclosures suit a variety of installations and brand aesthetics.

Key Features

  • High-resolution printing: 203 dpi direct thermal engine ensures crisp text and logos for professional receipts and kitchen tickets.
  • Fast print performance: Up to 160 mm/sec printing speed reduces customer wait times and accelerates transaction throughput.
  • Flexible connectivity: Available USB, serial and Ethernet interfaces provide easy integration with a wide range of POS systems and network configurations.
  • Durable cutter and print head: Built-in auto-cutter rated for 2,000,000 cuts and print-head life measured in hundreds of kilometers for low maintenance.
  • Compact, deployment-ready design: Small desktop footprint with optioned countertop models and choice of black or white finishes to match installation needs.

Specifications

  • Brand: Citizen
  • Printing technology: Direct Thermal
  • Resolution (dpi): 203 dpi
  • Print speed: 160 mm/sec
  • Interface configuration: USB + serial, Ethernet + USB (varies by variant)
  • Connection: USB, RS232, Ethernet (depending on model)
  • Supported media width: 80 mm (some variants 58 mm)
  • Maximum roll diameter: 83 mm
  • Cutter life: 2,000,000 cuts
  • Print head life: 150–200 km (variant dependent)
  • Print head pulses: up to 300,000,000
  • Memory capacity: 384 KB
  • Storage type: Flash (192K bytes char, 384K bytes graphic) on some variants
  • Power supply voltage: 240 V (on applicable variants)
  • Power supply frequency: 47–63 Hz or 60–63 Hz (variant dependent)
  • Power consumption: 32 W (specified on some variants)
  • Body / case color: Black, Pure white, Cool white (model dependent)
  • Size (example variant): 140 x 195 x 132 mm
  • Paper thickness (example): 65 µm (specified on one variant)
  • Paper roll core inner / outer diameter: 12 mm / 18 mm (specified on one variant)
  • Buffer size: 4 KB (specified on some variants)
  • Market region: Europe
  • Target industry: POS

Main Features

  • POS: Yes

  • Equipment Format: Desktop

  • DPI: 203 dpi

  • Case color: Black

  • Connection: RS232, USB

  • 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 6.30 in/s
Maximum Print Resolution (dpi) 203 x 203
Number of Pins 9-pin
Number of Columns 72
Maximum Print Width 2.83"
Barcode Symbology Supported
  • UPC-A
  • UPC-E
  • ITF
  • Code 39
  • Code 128
  • Codabar
  • Code 93
  • GS1 DataBar
  • PDF-417
  • QR Code
  • JAN-13
  • JAN-8
Application/Usage Desktop
Print Technology Direct Thermal
Memory
Standard Memory 4 KB
Interfaces/Ports
Serial Port Yes
USB Yes
Cutter
Cutter Yes
Media Types & Handling
Media Type Thermal Paper
Maximum Roll Diameter 3.27"
Maximum Label Width 3.15"
Power Description
Power Source AC Supply
Input Voltage
  • 110 V AC
  • 220 V AC
Operating Power Consumption 40 W
Off-Mode Power Consumption 700 mW
Standby Power Consumption 150 mW
Physical Characteristics
Color Family Black
Product Color Black
Height 5.2"
Width 5.5"
Depth 7.7"
Weight (Approximate) 4.19 lb
Miscellaneous
Platform Supported PC
Certifications & Standards
  • UL
  • C-UL
  • FCC Class A
  • TUV-GS
  • CE marking
  • VCCI
Energy Star Yes
Environmentally Friendly Yes
Documents
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Product document mod-ct-s310ii-citizen-receipt-printers-datasheet.pdf CT-S310II-U-BK Product document mod-ct-s310ii-citizen-receipt-printers-manual-en-de-fr-es-it.pdf CT-S310II-U-BK Product document mod-ct-s310ii-citizen-receipt-printers-user-manual.pdf CT-S310II-U-BK Product document mod-ct-s310ii-citizen-receipt-printers-datasheet.pdf MOD-CT-S310II Product document mod-ct-s310ii-citizen-receipt-printers-manual-en-de-fr-es-it.pdf MOD-CT-S310II Product document mod-ct-s310ii-citizen-receipt-printers-user-manual.pdf MOD-CT-S310II
FAQs
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What print speed and resolution does the Citizen CT-S310II deliver?
The Citizen CT-S310II prints at up to 160 mm/sec using a direct thermal engine at 203 dpi, producing sharp text and graphics for receipts and kitchen tickets.
Which interface options are available on the Citizen CT-S310II?
The CT-S310II is available with USB, RS232 serial, and Ethernet connectivity, with interface combinations varying by variant — for example, USB plus serial or Ethernet plus USB.
Does the Citizen CT-S310II include a paper cutter, and how long is it rated to last?
Yes, the CT-S310II includes a built-in auto-cutter rated for 2,000,000 cuts, and the print head is rated for 150 to 200 km of printing life.
What color options and form factor does the Citizen CT-S310II come in?
The CT-S310II is a desktop counter-top printer available in black and white enclosure options to suit different installation aesthetics.
What industries and environments is the Citizen CT-S310II designed for?
It is designed for demanding POS environments and is well suited to retail, hospitality, and quick-service restaurants where speed, reliability, and a compact footprint are priorities.