A current-generation 4-inch desktop label printer that prints crisp labels with no ribbon, featuring Bluetooth, Ethernet and USB plus a modular connectivity slot so it grows with your business.
The Zebra ZD421 is the current-generation 4-inch desktop label printer in Zebra's popular ZD400 series, and the modern replacement for Zebra's older GK series printers. This is the direct thermal model with Bluetooth, Ethernet and USB, which prints using heat-sensitive label stock and needs no ribbon, keeping running costs low and setup simple.
It prints clear text, barcodes and logos at 203 dpi and up to 152mm (6 inches) per second, across labels up to 104mm wide. Zebra's OpenAccess design makes media loading quick and jam-free, while dual media sensors handle a wide range of label and tag stock. It speaks both ZPL and EPL, so it drops straight into existing Zebra label formats and barcode software.
What sets the ZD421 apart is its modular connectivity slot, which lets you add or change interfaces later so the printer keeps pace with your needs. It runs the Print DNA software suite with PrintSecure and Link-OS for easier setup, management and security, is ENERGY STAR qualified, and is backed by a 24 Months Return to Base warranty.
Print product, price, shelf and shipping labels on demand for shops, stockrooms and back office.
Produce barcode, carton and despatch labels quickly across networked workstations.
Print patient, specimen and asset labels where clean, reliable, networked printing matters.
The ZD421 is the newer, modular successor to Zebra's ZD420 and the older GK420, so you gain the modular connectivity slot, Print DNA software and current Link-OS platform in a familiar 4-inch desktop format. Its closest sibling is the Zebra ZD421 Thermal Transfer model, which uses a ribbon plus label stock to print durable, long-life labels that resist fading. Both share the same 203 dpi resolution, 6 ips speed, 104mm print width, modular slot and Print DNA software, so the choice comes down to label durability and running cost: choose this ZD421 Direct Thermal model for low-cost, short-to-medium-life labels with no ribbon, or the Thermal Transfer model for hard-wearing, long-life labels. If you need more speed and an optional display, the Zebra ZD620 is the premium step-up at up to 8 ips.
| ZD421 Direct Thermal | ZD421 Thermal Transfer | |
|---|---|---|
| Print method | Direct thermal, no ribbon | Thermal transfer, ribbon |
| Running cost | Lowest, labels only | Labels plus ribbon |
| Label durability | Short-to-medium life | Long-life, fade-resistant |
| Connectivity | Bluetooth, Ethernet, USB, modular slot | Bluetooth, Ethernet, USB, modular slot |
| Software | Print DNA, PrintSecure | Print DNA, PrintSecure |
| Model | Zebra ZD421 Direct Thermal |
| Print method | Direct thermal (no ribbon, labels only) |
| Resolution | 203 dpi (8 dots per mm) |
| Max print speed | Up to 152 mm (6 in.) per second |
| Max print width | 104 mm (4.09 in.) |
| Print colour | Monochrome |
| Programming languages | ZPL and EPL |
| Media handling | OpenAccess loading, dual media sensors |
| Connectivity | Bluetooth, Ethernet, USB, modular connectivity slot |
| Software | Zebra Print DNA, PrintSecure, Link-OS |
| Energy rating | ENERGY STAR qualified |
| Warranty | 24 Months Return to Base |
| SKU | ZD4A042-D0PE00EZ-1 |
This printer needs direct thermal label rolls to print.
Shop label rollsDirect thermal label rolls are sold separately so you can match the media to your application.
The Direct Thermal model prints using heat-sensitive label stock with no ribbon, which keeps running costs low and suits short-to-medium-life labels. The Thermal Transfer model uses a ribbon plus labels to produce durable, long-life prints that resist fading. Both share 203 dpi, 6 ips, a 104mm print width, the modular connectivity slot and Print DNA software, so the choice comes down to label durability and running cost.
No. As a direct thermal printer it prints onto heat-sensitive label stock and needs no ribbon, so you only buy label rolls. This makes it simple to run and ideal for short-to-medium-life labels such as shipping, retail and barcode labels.
The ZD421 is the newer-generation update to the ZD420 and the modern replacement for Zebra's GK420. It keeps the familiar 4-inch desktop format while adding the modular connectivity slot, the current Print DNA software suite with PrintSecure, and the Link-OS platform for easier setup, management and security.
This ZD421 has Bluetooth, Ethernet and USB built in, so it works as a networked or standalone printer. Its modular connectivity slot also lets you add or change interfaces later, so the printer can adapt as your setup changes.
It prints labels up to 104mm (4.09 in.) wide at 203 dpi, making it a true 4-inch desktop label printer suitable for shipping, product, barcode and asset labels.
Yes. At 203 dpi it prints crisp, scannable 1D and 2D barcodes, along with text and logos, on standard direct thermal label stock.
The ZD421 handles low-to-medium label volumes comfortably across retail, office, warehouse and healthcare use. If you need more speed or an optional display for heavier daily duty cycles, the Zebra ZD620 is the step up at up to 8 ips.
The Zebra ZD421 is backed by a 24 Months Return to Base warranty. If you have any questions about setup or media, contact our team on 1300 115 808.
The Zebra ZD421 is the current-generation 4-inch direct thermal desktop label printer for Australian retail, office, warehouse and healthcare use, supplied here with Bluetooth, Ethernet and USB. As a direct thermal printer it needs no ribbon, so you only buy label rolls, keeping running costs low for short-to-medium-life labels. It prints crisp text, barcodes and logos at 203 dpi and up to 152mm (6 inches) per second across labels up to 104mm wide, with OpenAccess loading and dual media sensors for quick, reliable media changes. Its modular connectivity slot lets you add or change interfaces later, while the Print DNA software suite with PrintSecure and Link-OS simplifies setup, management and security. As the modern modular successor to the ZD420 and GK420, it is a future-proof choice, with a ZD421 Thermal Transfer model available when you need durable long-life labels and the faster ZD620 available when you need up to 8 ips and an optional display. ENERGY STAR qualified and backed by a 24 Months Return to Base warranty.
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