Desktop LBP Citizen CL-S621/CL-S631

The Desktop Printer That Makes Life Easy

The CL-S621 is a precision engineered, fast and easy-to-use unit that includes all the capabilities of the CL-S521 plus the option to print in both direct thermal and thermal transfer modes.   The printer also features Citizen’s Hi-Lift™ metal mechanism and the innovative ARCP™ anti-wrinkle and automatic tensioning system.

  • Cross-Emulation™ enables automatic recognition of Zebra®, ZPL® and Datamax®
  • Internal Power Supply
  • Easy media loading


  • Hi-Lift™ mechanism for easy ribbon and media loading.
  • Hi-Open™ case for vertical opening and safe closing.
  • Self-contained metal mechanism for durable operation.
  • Internal power supply for reliability.
  • Cross-Emulation™ automatic language detection.
  • Both Zebra® and Datamax® emulations as installed as standard.
  • 360 metre ribbon capacity for fewer ribbon changes with standard 1 inch ribbon cores.
  • ARCP™ ribbon anti-wrinkle and automatic tensioning system.
  • Adjustable media sensor as standard with label gap and black mark sensing.
  • Optional internal Wireless LAN and Ethernet interfaces.


  • Courier
  • Logistic / Transport
  • Manufacturing
  • Retail


ModelCL-S621 CL-S631
TechnologyThermal Transfer & Direct Thermal
Resolution203 dpi (8 dots per mm) 300 dpi (12 dots per mm)300 dpi (12 dots per mm)
Emulaitons (Language)Datamax® I-Class™ & DMX400™, Zebra® ZPL-II®.
Cross-Emulation™ automatic detection. BASIC interpreter for data steam processing.
Print Speed (Maximum)4 inches per second (100 mm/s)4 inches per second (100 mm/s)
Print Width (maximum)4.10 inches (104.1 mm)
Media Width (min to max)0.50 inches to 4.65 inches (12.5 mm to 118.1 mm)
Media Thickness (min to max)0.0025 - 0.01 inches (0.0635 - 0.254 mm)
Media SensorFully adjustable with label gap, card notch and black registration mark.
Media Length (min to max) 0.25 inches to 64.00 inches (6.35 mm to 1625.6 mm) 0.25 - 32 inches (6.35 - 812.8mm)
Roll Size (max), Core sizeInternally: 5 inches (125 mm) diameter. Externally 8 inches with optional holder. Core size: 1 inch (25mm)
Ribbon Size2.9 inches (74 mm) maximum diameter, 360 meter length, 1 inch cores
Ribbon Winding & TypeInk side in or out, switch selectable. Wax, Wax/Resin or Resin Type
Ribbon SystemARCP™ automatic ribbon tension adjustment
Standard InterfacesSerial (RS-232C), USB (version 1.1)
Optional InterfacesParallel (IEEE-1284), Ethernet (10/100 BaseT), Wireless LAN (802.11b, g, n)*
Case, Mechanism & PanelHi-Open™ plastic case with safe close. Hi-Lift™ metal mechanism. Control Panel: 4 buttons and 4 LEDs
RAM (Standard Memory)16.0 Mb total, 1.0 Mb available for user
Flash (Non-Volatile Memory)4.0 Mb total, 1.0 Mb available for user
Windows® drivers and software Free-of-charge on CD including design software supporting Windows®, XP®, 2003, 2008, Vista™, Windows 7
Size (W x D x H) and Weight 231 x 289 x 183mm, 3.6 Kgs 231 x 289 x 270 mm, 4.5 Kgs