FREE Shipping & Returns

On orders of $250 or more!

30 Day Price Protection

Shop with confidence.
Shopper Approved Rating

Zebra GK42-102510-000 203 dpi Advanced TT Desktop Printer GK420T

Manufacturer Part No.
Retail $720.00
Web Price $453.60
Call 888-444-9128 for Availability

Zebra GK420T, thermal transfer, 203 dpi, 4.09-inch print width, 5ips print speed, EPL and ZPL, USB 2.0, serial, parallel. Includes US power cord and 6-foot USB cable.

Select GK Series printer part numbers are no longer for sale. The replacement model is Zebra's ZD420 desktop printer. Please purchase direct replacement part number ZD42042-C01000EZ.

This item ships for FREE!


With their easy-to-use design, Zebra's GK™ series advanced desktop printers combine a proven design and long term dependability with fast print speeds and network manageability, making them a top choice for a variety of mid-volume and distributed-printing applications to reliably produce quality text, barcodes or graphics. Delivering a maximum print speed of 6 inches per second (203 dpi), the GK420t thermal transfer printer and the GK420d/GK420e direct thermal printers are the ideal option for label and receipt printing applications that require network manageability in retail, manufacturing, and transportation & logistics.

The intuitive design of the GK420 printers combines a choice of three connectivity interfaces – USB, Parallel, and Serial – and optional 10/100 Ethernet, co-resident EPL2 and ZPL II programming languages and Unicode to ensure quick and efficient integration. The GK420 offers direct thermal only models for simplicity and cost savings.


  • Standard programming languages: EPL™ and ZPL®
  • Standard construction: Dual-wall frame
  • Tool-less printhead and platen replacement
  • OpenACCESS™ for easy media loading
  • Quick and easy ribbon loading
  • Auto-calibration of media
  • Certified Microsoft® Windows® drivers
  • ENERGY STAR® qualified

Technical Specifications

Print resolution: 203 dpi (8 dots/mm)
Maximum print speed: 5 ips (127 mm/sec)
Maximum media width: 4.25" (108 mm)
Maximum print width: 4.09" (104 mm)
Media thickness: 0.003" (0.08 mm) - 0.0075" (0.19 mm)
Core inner diameter: 0.5" (12.7 mm), 1" (25.4 mm), 1.5" (37.1 mm)
Max roll outer diameter: 5" (127 mm)
Media sensors: Fixed reflective and transmissive gap, black line, and notch
Media type: Roll-fed or fan-fold, die cut or continuous direct thermal labels with or without black line, tag stock, continuous receipt paper, and wristbands

General Information

Product type: Advanced thermal transfer / direct thermal desktop label and receipt printer
Brand name: Zebra
Manufacturer: Zebra Technologies
Product model: GK420t (GK Series)

Physical Characteristics

Height: 7.5" (191 mm)
Width: 7.6" (193 mm)
Depth: 10" (254 mm)
Form factor: 4" desktop printer
Weight (approximate): 4.6 lbs. (2.1 kg)


Centronics® Parallel (36 Pin) connector ports
RS-232 auto-sensing, adaptive Serial interface, DB-9
USB V1.1, bi-directional


Operating temperature: 40°F to 105°F (4.4°C to 41°C)
Storage temperature: -40°F to 140°F (-40°C to 60°C)
Humidity: 10% to 90% non-condensing RH


Auto-detectable (PFC Compliant) 100-240VAC, 50- 60Hz rated at 70Watts
ENERGY STAR 2.0 qualified printers

Barcodes, Fonts, & Firmware

Barcode ratios: 2:1 (non-rotated) and 3:1
1D symbologies: Codabar, Code 11 (ZPL), Code 128, Code 39, Code 93, Code 93, EAN-13, EAN-8, EAN-14 (ZPL), German Post Code (EPL), Industrial 2-of-5 (ZPL), Interleaved 2-of-5, Japanese Postnet (EPL), ISBT-128 (ZPL), Logmars (ZPL), MSI, Plessey, Postnet, GS1 DataBar (RSS-14), Standard 2-of-5 (ZPL), UCC/EAN-128 (EPL), UPC and EAN 2 or 5 digit extensions (ZPL), UPC-A, UPC-A and UPC-E with EAN 2 or 5 digit extensions, UPC-E, and GS1 Databar (formerly RSS)
2D symbologies: Codablock (ZPL), Code 49 (ZPL), Data Matrix, MaxiCode, QR Code, PDF417, MicroPDF417, Aztec (For EPL and ZPL except where noted)
Firmware: EPL2™, EPL Line Mode, ZPL II®, Web View, Alert, ZBI™
Fonts: 16 resident expandable bitmap fonts (ZPL language), one resident scalable font (ZPL language), 5 resident expandable bitmap fonts (EPL language)

Performance and Memory

Processor: 32 bit RISC processor
Standard RAM: 8 MB (3 MB user available)
On-board Flash memory: 4 MB (1.5 MB user available)

Regulatory & Service

Agency approvals: FCC Part 15, Subpart B (Class B), ICES 003, VCCI, C-Tick, CQC, EAC, KCC, BSMI, ICES-003; EN55022 (Class B), EN55024, EN61000-3-2, EN61000-3-3; CB Scheme IEC 60950-1, TUV NRTL, C-Tick, CCC, NOM, EAC, KCC, BSMI, BIS


Included in package:

  • GK420d label printer
  • US power cord
  • 6' USB cable
  • Documentation
Technical Specs
Manufacturer Part No. GK42-102510-000
Manufacturer Product Link
Printing Method Direct Thermal, Thermal Transfer
Maximum Print Width (Inches) 4.09
Maximum Media Width (Inches) 4.25
Minimum Media Width (Inches) 0.75
Connectivity Parallel Port, RS-232, Serial, USB
Print Features Tear Bar
Print Speed (IPS) 5
DPI 203
Maximum Daily Print Volume 500
Max Media Inner Core (Inches) 1"
Max Outer Diameter (Inches) 5.00"
Winding Direction Out