Label PrintersCL-S521/CL-S531

Entry-model compact label printer featuring outstanding cost performance

Paper Width
19.5 to 118mm
Print Method
CL-S521/530:Thermal Method
CL-S621/630:Thermal/Thermal Transfer Method
  • Metal Chassis
  • Thermal Transfer*
  • Thermal


  • Tickets
  • Barcodes
  • 2D Barcodes
  • Labels
  • Tags
  • Fanfold Paper


  • Compact Design

    Has a vertically-opening top cover for a small footprint that requires minimal space on the desk.

  • Front-Open Structure

    Easy maintenance of head and cutter.

  • High Speed and High Quality Printing

    32-bit RISC CPU control allows high speed and high quality printing.

  • Easy Paper Loading and Maintenance

    Full-open mechanism allows easy paper loading, maintenance and cleaning.

  • Various Interfaces for Adapting to System Environments

    Equipped as standard with RS-232C and USB1.1.

  • Capable of Thermal Transfer Printing

    Despite being compact (desktop-type), the CL-S631/621 can use a 300m thermal transfer ribbon.

  • Outstanding Cost Performance

Main Applications

  • Tickets

  • Labels

  • Barcode Printing

Used in the following industries

  • Manufacturing

  • Food

  • Distribution

  • Healthcare/Clinical

Basic Functions

  • Auto Cutter
  • Buzzer
  • Internal Power Supply (with extended base option)
  • Thermal Transfer
  • Thermal
Supported Interfaces
  • USB
  • Serial
  • Wired LAN
Available Drivers
  • Windows
Supported Platform by SDKs
  • Windows
  • Windows CE
  • Android


Model Name CL-S631 CL-S621 CL-S531 CL-S521
Print Method Thermal Transfer/Thermal Printing Thermal Printing
Printing Speed Thermal/Thermal Transfer Mode:
50.8 to 101.6mm/sec.
Thermal Mode:
50.8 to 152.4mm/sec.
Thermal Transfer Mode:
50.8 to 152.4mm/sec.
When Peeling Unit Is Attached:
50.8mm to 101.6mm/sec.
Thermal Mode:
50.8 to 152.4mm/sec.
When Peeling Unit Is Attached:
50.8mm to 101.6mm/sec.
Thermal Mode:
50.8 to 152.4mm/sec.
When Peeling Unit Is Attached:
50.8mm to 101.6mm/sec.
Resolution 300dpi (11.8 dots/mm) 203dpi (8 dots/mm) 300dpi (11.8 dots/mm) 203dpi (8 dots/mm)
Paper Width 19.5 to 118mm
Paper Pitch 6.35 to 812.8mm
Paper Diameter Exterior Diameter: up to 127φ Paper Core Diameter: 25.4 to 76mm
Paper Thickness 0.0635 to 0.254mm
Paper Detection Sensor Moving Type (Transmission/Reflection)
Barcodes One Dimensional:
Code 39/93/128, UPC-A, UPC-E, EAN-13 (JAN-13), EAN-8 (JAN-8), Interleaved 2 of 5, HIBC (Code 39 using Modulus 43), CODABAR (NW-7), Int 2 of 5 (Interleaved 2 of 5 using Modulus 10), Plessey, CASE CODE, UPC2DIG ADD, UPC5DIG ADD, Telepen, ITF14, ITF16, Matrix2of5, COOP2of5, GS1*1
Two Dimensional:
UPS Maxi Code, PDF-417, Data Matrix, QR code, Aztec, RSS
Equipped Font Fixed Pitch Font, OCR Font, Proportional Font
Kanji Font Gothic (16x16, 24x24, 32x32, 48x48 dots)
Command Citizen Original Command
Interfaces Standard: RS-232C and USB (USB1.1)
Options: Wired LAN, Parallel (IEEE1284-ECP/Centronics compliant)
Power Supply Voltage AC100V, 50/60 Hz
Dimensions 231(W) ×289(D) ×263(H) mm 231(W) ×289(D) ×186(H) mm
Mass Approx. 4.9kg Approx. 3.5kg
Reliability MCBF: 1000km, Head Life: 50km
Safety Standards UL, CSA, VCCI: Class A, FCC: Class A
Accessories Thermal Transfer Ribbon (CL-S620/630)
Labels for Testing
AC Cord
CD-ROM (User Manual/Printer Driver)
Quick Start Guide
Head Cleaner
Please contact us for details regarding GS1.



(Unit: mm)


Equipped as standard with USB and serial interfaces. Others are available as options sold separately.

Interface area on back (Serial and USB equipped as standard)

Equipped as Standard

  • USB
  • Serial

Options Sold Separately

  • Wired LAN

* Company names and product names are trademarks or registered trademarks of their respective companies.