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HomeZebra TechnologiesZebra Barcode PrintersZebra Desktop PrintersZebra G-Series GK420 / GX420 / GX430

Zebra G-Series GK420 / GX420 / GX430.

Zebra G-Series GK420 / GX420 / GX430

Zebra G-Series GK420 / GX420 / GX430 Features

Overview of Zebra G-Series GK420 / GX420 / GX430 Printers

Always a Perfect Fit

Zebra’s G-Series compact desktop printers for print widths up to 4 inches deliver best-in-class speed and performance. From the basic GK™model to the feature-rich GX™model, the G-Series printers are reliable, durable, and flexible to fit almost any low- to mid-volume printing application and budget.

Fitting Choices

Built with Zebra durability and reliability, the G-Series GK model provides the best value of all basic desktop thermal printers, while the premier GX model supports a variety of industries and applications with the widest range of features. Choose the space-saving direct thermal version of either model for the smallest footprint of any 4-inch desktop printer, or the direct thermal/thermal transfer version to save users time with the easiest ribbon-loading system available.

With both EPL™and ZPL® programming languages native on all models, G-Series printers fit in perfectly with other Zebra printers. And a variety of connectivity options makes them easy to integrate into existing local or networked systems. Zebra’s G-Series barcode printers are a smart investment, and always a perfect fit.

Ideal for These Applications

Retail / Price marking, Gift registry, coupon and receipt printing, Pharmacy prescription labeling

Healthcare / Specimen labeling, Patient tracking

Manufacturing / Light-industrial work-in-process and product labeling

Security / Visitor ID, Evidence tracking, Parking passes

Travel & Hospitality / Boarding passes, Bag tags, Ski lift tickets

Zebra G-Series GK420 / GX420 / GX430 Specifications

Printer Name


Standard Features

Print methods: Thermal transfer or direct therma

Programming language: EPL and ZPL are 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

Triple connectivity: USB, parallel, serial

Printer SpecificationsResolution

203 dpi/8 dots per mm

300 dpi/12 dots per mm (GX430t model)


Standard: 4 MB Flash; 8 MB SDRAM

Optional: 64 MB (68 MB total) Flash with RTC (GX models)

Print Width

4.09”/104 mm

Maximum Print Length

39.0”/990 mm

Maximum Print Speed

GK420™: 5”/127 mm per second

GX420™: 6”/152 mm per second

GX430™: 4”/102 mm per second

Media Sensors

Standard: Fixed reflective and transmissive sensors

Optional: Adjustable reflective black line sensor (GX models)

Media Characteristics

Maximum Label and Liner Length

Maximum non-continuous: 39”/990 mm

Maximum Label and Liner Width

0.75”/19 mm to 4.25”/108 mm

Maximum Media Roll Size

5”/127 mm O.D.

Media Thickness

0.003”/0.08 mm to 0.0075”/0.19 mm

Media Types

Roll-fed or fan-fed, die-cut or continuous direct thermal labels with or without black line, tag stock, continuous receipt paper, wristbands

Ribbon Characteristics

Outside diameter: 1.36”/35 mm

Standard length: 244’/74 m Ratio: 1:1 media to roll to ribbon

Width: 1.33”/33.8 mm to 43”/109.2 mm

Core inner diameter: 0.5”/12.7 mm

Operating Characteristics


Operating temperature: 40° F/4.4° C to 105° F/41° C

Storage temperature: -40° F/-40° C to 140° F/60° C

Operating humidity: 5% to 95% non-condensing

Storage humidity: 5% to 95% non-condensing


Auto-detectable (PFC Compliant) 100-240VAV, 50-60Hz

Agency Approvals

Emissions: FCC Part 15, Subpart B, VCCI, C-TickEmissions and Susceptibility: (CE): EN55022 Class-B, EN61000-3-2, EN61000-3-0 and EN55024, CCC

Safety: CB Scheme IEC IEC 60950:1991 +A1 +A2 +A3 +A3 +A4, TUV NRTL, IRAM NOM, AAMI, CCC

Physical Characteristics

                                Direct Thermal          Thermal Transfer
Width: 6.75”/171 mm 7.6”/193 mm
Height: 6.0”/152 mm 7.5”/191 mm
Depth: 8.25”/210 mm 10.0”/254 mm
Weight: 3 lbs/1.4 kg 4.6 lbs/2.1 kg

Communication and Interface Capabilities

• G-Series models triple interface standard

• RS-232 auto-sensing serial interface, DB-9

• USB V1.1, bi-directional

• Centronics® parallel

• Ethernet—10/100 internal (optional) offered in combination with USB and serial interface (replaces parallel port)

• Wireless—802.11 b/g or Bluetooth (optional) with LCD display offered in combination with USB and serial interfaces (replaces parallel port)— GX models only

Fonts/Graphics/SymbologiesFonts and Character Sets

• 16 resident expandable ZPL II bitmap fonts

• One resident scaleable ZPL font

• Five resident expandable EPL2 fonts

• Native open type font support

• Unicode™ compliant for multi-language, on-demand thermal printing

Graphic Features

• Supports user-defined fonts and graphics—including custom logos

• ZPL II drawing commands—for boxes and lines

Barcode Symbologies

• Barcode Ratios: 2:1 (non-rotated) and 3:1

• Linear Barcodes: 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)

• 2-Dimensional: Codablock (ZPL), Code 49 (ZPL), Data Matrix, MaxiCode, QR Code, PDF417, MicroPDF417, Aztec (For EPL and ZPL except where noted)

Options and Accessories

• Dispenser—label peel and present with label present sensor

• ZebraNet® 10/100 Print Server—Internal Ethernet for network communication and printing

• Bluetooth wireless, includes LCD for visual communication—GX models only

• 802.11b/g wireless radio, includes LCD for visual communication—GX models only

• Adjustable media sensor for black line media— GX models only• Cutter for various media types—GX models only

• 300 dpi print resolution printing for fine detail and crisp images (GX430t™)

• 64 MB Flash memory with real-time clock (for total of 68 MB)—GX models only

• Font Packs—Asian and other international font kits

• KDU Plus™ and KDU™ keyboard display units for stand-alone printing solutions

• Interface cables and adapters


Getting Started

User’s Guides and Manuals