Zebra GC420t direct thermal and thermal transfer printer

Code: 2005459PRINTERS

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Direct thermal and thermal transfer printer

Affordability Meets High-Quality Zebra’s feature-rich, competitively priced GC420™ desktop printer brings Zebra quality, durability and reliable performance to many low- to medium-volume, direct thermal and thermal transfer printing applications.

Compact Design Filled with Powerful Features.

The GC420 printer’s compact, space-saving design contains a powerful 32-bit processor for fast label throughput, and 8 MB Flash memory for increased storage of fonts and graphics. The GC420 supports media widths up to 4.25” for standard desktop applications. It also includes both EPL2™ and powerful ZPL II®  programming languages—making it easy to integrate with other Zebra printers. Peeler/dispenser option extends the GC420 printer’s versatility to meet an even greater variety of applications.



Ideal for these applications:

  • Government - documents management, evidence tracking
  • Healthcare - laboratory specimen and blood bank labeling 
  • Retail - price labeling and receipt printing
  • Manufacturing - light-industrial work-in-process, product and shipping labeling
  • Transportation & Logistics - boarding tickets, bag tags, parking passes

Standard features

  • 32 bit RISC processor
  • Programming languages: EZPL (ZPL, ZPL II and EPL2)
  • Triple connectivity: USB, parallel and serial
  • Print methods: Direct thermal and thermal transfer, printing of barcodes, text and graphics.
  • OpenACCESS™ for easy media and ribbon loading
  • Microsoft® Windows® drivers


  • 203 dpi/8 dots per mm


  • 8 MB Flash, 8 MB SDRAM (standard)

Print width

  • 104 mm

Print length

  • 990 mm 

Print speed

  • 102 mm per second maximum

Media sensors

  • Transmissive and reflective sensors

Media characteristics

  • Media width 25.4mm to 108mm
  • Media length 9.6 mm to 990mm
  • Maximum media roll size 127 mm O.D on a 25.4 mm, 38mm ID core
  • Media thickness 0.08 mm to 0.18 mm
  • Media types:
    • Roll-fed or fan fold  
    • Label stock (die cut or continous, direct thermal)
    • Tag stock (die cut or continous, direct thermal)
    • Receipt paper (continous, direct thermal)
    • Wristband stock (direct thermal)

Operating characteristics

  • Operating Temperature: 40° F/5° C to 105° F/ 41° C 
  • Storage/Transport Environment:-40° F/-40° C to 140° F/60° C
  • Operating humidity: 10% to 90% non-condensing RH
  • Storage humidity: 5% to 95% non-condensing RH

Agency approvals

Physical characteristics

  • Width: 201 mm
  • Height: 170 mm
  • Depth: 208 mm
  • Weight: 1.4 kg

Options and accessories
  • Peel – a front-mount, passive-peel with no take-up spindle
  • Peel – a front-mount, passive-peel with liner take-up spindle (factory-fitonly)
  • Cutter – a front-mount guillotine cutter
  • Real-time clock (RTC)
  • Keyboard Display Unit (KDU)

Optional software
  • ZebraDesigner™ Pro—An intuitive, easy-to-use software program for creating complex label designs (option)
  • ZebraDesigner—Offers basic features for simple label design
  • ZebraDesigner Driver—The most powerful driver available from Zebra

Communication and interface capabilities

  • Centronics® parallel (36 pin) connector ports
  • RS-232 Serial interface
  • USB V1.1 interface, bi-directional


  • ZPL II® - Zebra Programming Language provides sophisticated label formatting and printer control.
  • EPL2™—Eltron Programming Language with Line Mode simplifies label formatting and enables format compatibility with legacy applications

Barcode symbologies

  • Bar Code Ratios: 2:1 (non-rotated) and 3:1
  • Linear Bar Codes: Code 11, Code 39, Code 93, Code 128A, B & C (User selectable/Auto), UCC/EAN-128, Code 128, UPC-A, UPC-E, EAN-8, EAN-13, EAN-14, UPC-A and UPC-E with EAN 2 or 5 digit extensions, UPC-E with 2 and 5 add on, Plessey, POSTNET, Standard 2 of 5, Industrial 2 of 5, Interleaved 2 of 5, LOGMARS, MSI, Codabar, and GS1 DataBar™ (formerly RSS), Postnet (5, 9, 11 & 13 digit) Japanese Postnet, Plessey (MSI-1), MSI-3, German Post Code, RSS-14 (limited, truncated, stacked).
  • 2-Dimensional: PDF417 (MicroPDF-417 and MacroPDF-417), Code 49, Maxicode, Codablock, Data Matrix, QR code, and Aztec

Fonts and graphics

  • 16 resident expandable ZPL fonts
  • One resident scalable ZPL font
  • 5 resident expandable EPL2 fonts
  • Supports user-defined fonts and graphics - including custom logos

Electrical specifications

  • Auto-ranging external power supply with C7 type connector
  • Output: 20 VDC, 2.5A
  • Input: 100-240 VAC, 50-60 Hz

Please Note: specifications and options vary according to printer model and are subject to change without prior notice.

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