Zebra printhead ZT420, 12 dots/mm (300dpi)

Zebra ZT420 Printhead, 300 dpi

The printhead is one of the parts that wears first on a label printer. When print quality starts to fade, barcodes fail to scan, or pale streaks appear across your labels, it's time to replace it. The right part gets you back up and running without calibration headaches or adjustment rounds.

This is a genuine Zebra printhead designed specifically for the ZT420 and ZT421 industrial label printer series. Resolution is 12 dots/mm — 300 dpi — which gives you sharp, readable barcodes, clean small text, and accurate logo reproduction on every label.

Why the genuine part matters

Third-party printheads often differ slightly in dimensions or heat-transfer profile. That small difference is enough to push print quality below the printer's original specification. The genuine Zebra printhead is engineered to the exact tolerances of the ZT420 and ZT421 — the mounting fits first time, calibration completes without intervention, and print quality stays at the level the printer was set up to deliver from day one.

Who this is for

• ·Warehouses and logistics operations where the printer runs hard every day
• ·Retailers printing price labels or outbound shipping labels at volume
• ·Workshops and light manufacturing where every barcode needs to scan reliably, every time

Technical details

• ·Resolution: 12 dots/mm (300 dpi)
• ·Compatible models: Zebra ZT420, ZT421
• ·Warranty: 12 months
• ·Country of origin: Thailand

Replacing the printhead

Swapping the printhead on a ZT420-series printer does not require specialist tools. Zebra's step-by-step instructions are available in the printer's service documentation. If you're unsure about the swap, or if the printer has other issues alongside the worn head, get in touch with Vaivatta — we'll help you sort it out so your production line is not standing still any longer than it has to be.

Keeping the right spare on the shelf means you're not waiting on a delivery the one time labels need to go out today.