Zebra GK420d Direct Thermal Label Printer | GK42-202520-000 | USB Parallel Serial

Zebra GK420d: Reliable Direct Thermal Label Printing for the Workplace

The Zebra GK420d is a compact desktop direct thermal label printer. Specifically, it suits a wide range of mid-volume labelling applications, from shipping and logistics to retail, healthcare, and light manufacturing. As a result, it’s a strong fit wherever you need fast, reliable barcode output without the running costs of a ribbon-based system.

It prints at up to 5 inches per second at 203 dpi, so it clears everyday label runs quickly. Additionally, the OpenACCESS clamshell design makes media loading fast and straightforward. Auto-calibration also means the printer detects and sets up new media automatically, so you waste less stock during setup.

Three-Port Connectivity as Standard

You can connect the GK420d via USB for a direct desktop setup. Alternatively, the RS-232 serial port suits integration with host systems and legacy hardware. Because of this, it works well across a variety of environments where different connection types are already in place. Furthermore, the standard Centronics parallel port provides an additional option for older workstation setups where USB is not the default interface.

An optional internal 10/100 Ethernet print server is also available, making the GK420d a practical shared network printer when needed. In addition, EPL and ZPL programming language support means it integrates quickly with most label design software and warehouse management systems.

Refurbished and Tested In-House

Our own technicians refurbish every unit we sell. This step never goes to a third party. First, print quality and resolution accuracy get a full check. Next, we test media feed reliability and connectivity across all ports. The auto-calibration function and OpenACCESS mechanism also receive a thorough inspection. Then, each unit gets a full clean, inside and out, before it ships. For the full picture, you can read more about us.

Each printer ships with a 90-day return-to-base warranty, including a 14-day return window. This means you’re covered from day one. Additionally, you’ll find full terms on our terms & conditions page. Moreover, we offer free delivery to mainland UK addresses, so the price you see is the price you pay.

Questions Before You Buy?

If you’d like to check compatibility, ask about stock, or get advice before ordering, simply visit our contact us page. Our team will help you out. Also, Zebra provides full manufacturer specifications on its website.

What’s in the box?

We include a UK power cable & AC adapter with this printer, so it arrives ready to use from day one. However, connection cables and label media are available for sale separately on our site. User manuals and documentation are also available elsewhere online.

Zebra GK420d Key Features & Benefits

203 dpi direct thermal printing at up to 5 ips — so it delivers sharp, scannable barcodes and labels at speed

OpenACCESS clamshell design with auto-calibration — meaning media loads in seconds and the printer detects new stock automatically

Triple connectivity: USB, RS-232 serial, and Centronics parallel — so it integrates into almost any workstation or host system setup

Optional internal 10/100 Ethernet — for shared network printing without an external print server

EPL and ZPL programming language support — meaning it works with most label design and warehouse management software out of the box

4 MB Flash and 8 MB SDRAM memory — so it stores label formats and fonts reliably for on-demand printing

Media width up to 4.09″ (104 mm), max label length 39″ (991 mm) — for standard shipping, retail, and identification label formats

ENERGY STAR qualified, compact footprint — so it keeps running costs and desk space requirements low

Refurbished and tested in-house — our technicians check print quality, media feed, and all ports before it ships

90-day Northwood warranty and free mainland UK delivery — so it covers you from day one, with no added shipping cost

Specification Table