Zebra ZD420 Label Printer: ZD420d, ZD420t and ZD420c Guide

The Zebra ZD420 label printer is a 4 inch desktop printer from Zebra's ZD400 range, sold in three versions: the ZD420d for direct thermal labels, the ZD420t for thermal transfer with a standard ribbon, and the ZD420c, which loads its ribbon from a cartridge. Many sites still run ZD420 fleets and need matching units.

We list 17 ZD420 part numbers, all refurbished, covering all three versions, 203 and 300 dpi, Healthcare builds and several interface options. This guide explains what each version is for, how to read the part number, media and ribbon, driver setup, Zebra's published lifecycle dates for the ZD420, what to check on a refurbished unit, and how it compares with the ZD421 and GK420d. For recorded values, jump to the ZD420 specs table or the full ZD420 range.

Products in our listing

Four ZD420 builds are shown below, one of each version plus a Healthcare build; the full range table lists all 17 part numbers.

ZebraZD42042-D01W01EZZD42042-D01W01EZ - Zebra ZD420d 4-Inch 203dpi Direct Thermal USB / Wi-Fi / Bluetooth Desktop Label PrinterIn stockView Details →

ZebraZD42042-T01E00EZZD42042-T01E00EZ - Zebra ZD420t 4-Inch 203dpi Thermal Transfer USB/Ethernet Desktop Label PrinterIn stockView Details →

ZebraZD42043-C01W01EZZD42043-C01W01EZ - Zebra ZD420c 4-Inch 300dpi Thermal Transfer USB / Wi-Fi / Bluetooth Desktop Label PrinterIn stockView Details →

ZebraZD42H43-D01E00EZZD42H43-D01E00EZ - Zebra ZD420d Healthcare 4-Inch 300dpi Direct Thermal USB/Ethernet Desktop Label PrinterIn stockView Details →

Every ZD420 we list is refurbished and carries the 30-Day Tech Seller USA warranty. Browse the full Zebra printer range or all printers and scanners.

ZD420 specs in our listing

Values below come from our product data for the 17 ZD420 part numbers. The three versions share the same recorded print width, media width, memory, command languages and weight; they differ in print method and speed by resolution. Connectivity for each part number is in the range table.

What the Zebra ZD420 label printer is for

The ZD420 is a general purpose 4 inch desktop printer. At 203 dpi it handles the everyday jobs: 4 x 6 shipping labels, carton and pallet labels, receiving labels, product and shelf labels, and barcode labels for inventory. At 300 dpi it prints smaller text and smaller 2D codes clearly, which suits specimen and sample labels, pharmacy labels, small parts labels and compact product labels.

The choice between the three versions decides which labels you can make. A ZD420d prints only on direct thermal media, which is ideal for shipping labels and other short life labels that will not see heat or sunlight for long. A ZD420t or ZD420c uses a ribbon, so it can print durable labels on paper and synthetic stock for assets, products and anything that has to last. If you are unsure which your labels need, our direct thermal vs thermal transfer guide explains the difference, and our Zebra ZD Series desktop printers guide shows where the Zebra ZD420 label printer sits among the other ZD models.

ZD420d vs ZD420t vs ZD420c

The letter after ZD420 is the first thing to check, and it is also coded into the part number. In our listings, part numbers with D after the dash are the ZD420d, T is the ZD420t and C is the ZD420c.

ZD420d. Direct thermal only. No ribbon to buy, load or store, which keeps running costs and training simple. It is the usual pick for shipping and logistics labels. We list six ZD420d part numbers, including two Healthcare builds.

ZD420t. Thermal transfer with a standard ribbon roll, and the record for every ZD420t we list says thermal transfer. This is the version for long life labels where you want full control over ribbon type and length. We list five ZD420t part numbers, including two Healthcare builds.

ZD420c. Thermal transfer from a ribbon cartridge, and the ZD420c ribbon cartridge is what sets it apart. Zebra's ZD420c spec sheet describes a cartridge that loads one way only and a chip that signals when the ribbon needs replacing. That makes ribbon changes quick on shared stations. We list six ZD420c part numbers, including two Healthcare builds.

Resolution, interface and healthcare builds

Resolution. The fourth and fifth digits of our part numbers show the resolution: ZD42042 and ZD42H42 are 203 dpi, and ZD42043 and ZD42H43 are 300 dpi. Our data records up to 6 in/sec (152 mm/s) at 203 dpi and up to 4 in/sec (102 mm/s) at 300 dpi. Choose 203 dpi for speed on large, simple labels and 300 dpi for small text and codes. Our 203 vs 300 vs 600 dpi resolution guide explains the trade off.

Interface. Our ZD420 part numbers are recorded with USB only, USB and Ethernet, or USB, Wi-Fi and Bluetooth, and one part number, ZD42042-D0E000EZ, has no connectivity recorded. Ethernet suits shared printing from a warehouse system or ERP, Wi-Fi suits carts and stations where cabling is hard, and USB alone suits a single workstation. Zebra's spec sheet lists serial and Ethernet as field-installable options and Wi-Fi and Bluetooth as factory-installed only, so buy a wireless part number if you need wireless. Our printer connectivity guide covers each option.

ZD420 healthcare builds. Part numbers starting ZD42H are the Healthcare versions, listed for the ZD420d, ZD420t and ZD420c at both 203 and 300 dpi, all recorded with USB and Ethernet. Our guide to specifying Zebra healthcare label printers explains how to choose one.

Match the part number. When replacing a unit, match the full part number on its label. Our ZD620 vs ZD621 part number guide shows how Zebra desktop part numbers are built, and the ZD420 follows a similar pattern.

Media, ribbon and the ZD420c cartridge

Our data records a media width of 0.585 to 4.65 inches and a maximum print width of 4 inches for every ZD420 we list. That covers narrow labels and tags up to standard 4 x 6 shipping labels.

For a ZD420d, buy direct thermal labels; they print without a ribbon and darken with heat. For a ZD420t, match the ribbon width to the label, or slightly wider, and match the ribbon type to the material: wax for paper labels, wax and resin for coated paper and many synthetics, and resin for polyester and polypropylene labels that need to resist chemicals, heat or abrasion. For a ZD420c, buy ribbon cartridges made for the ZD420c rather than standard ribbon rolls, since the cartridge is the ribbon format the printer is designed around. Our label media and ribbon selection guide goes into detail.

For peel and present or cut labels, Zebra lists a dispenser and a cutter as field-installable options. We list the Zebra cutter module P1090399-001 for ZD420d and ZD620d printers as a separate part. Our media handling modes guide explains tear off, peel and cut modes.

ZD420 driver, setup and command languages

Our data records ZPL II and EPL2 for every ZD420. ZPL II is what most label software, shipping platforms and warehouse systems send to Zebra printers. EPL2 support means a site still sending EPL from older software, for example after replacing an older Zebra desktop printer, can keep its label formats. Our ZPL vs ESC/POS command languages guide explains the differences.

For the ZD420 driver, Zebra's support page lists the Windows Printer Driver v10 as the recommended driver, with Zebra Setup Utilities for configuring the printer. A practical setup sequence: load media and, on the ZD420t or ZD420c, the ribbon; run media calibration; print a configuration label; set the network address on Ethernet or Wi-Fi builds; install the driver; then print real labels from your own application. On a 300 dpi unit, make sure your templates are set for 300 dpi, because a 203 dpi template will print smaller than expected.

ZD420 lifecycle and support status

Zebra lists the ZD420 as discontinued. Its support pages for the ZD420d and ZD420t, checked on November 4, 2026, state that Zebra is no longer offering the product for sale. For North America, the printer discontinuation date is September 30, 2021 and the service and support discontinuation date is December 31, 2024. Zebra lists different dates for other regions, ending with Latin America on April 30, 2025.

The ZD420 support pages do not name a replacement. Zebra's current ZD400 Series page lists the ZD421, ZD421C, ZD421-HC, ZD421C-HC, ZD411 and ZD411-HC, so the ZD421 is the 4 inch model now sold in the same range. In practice, refurbished units are the way to keep an existing Zebra ZD420 label printer fleet consistent, while a new deployment planned for many years may look at the ZD421. Our Zebra ZD421 desktop label printer guide covers that model.

Buying a refurbished ZD420: what to check

Printhead. Print a test pattern on arrival and look for white lines through text or barcodes, which show a failed dot. This matters most at 300 dpi. Our printhead failure diagnosis and replacement guide explains what to look for.

Platen roller and sensors. A worn or dirty platen causes skew and light print that is often mistaken for a head fault, and a dirty media sensor causes calibration errors. Our thermal printer maintenance guide covers cleaning.

Ribbon path. On a ZD420t, check the ribbon spindles turn freely. On a ZD420c, check that a cartridge seats and is recognized.

Interface. Confirm the build matches your part number and the interface you need works.

Condition terms. Our refurbished hardware grading guide explains what refurbished means at Tech Seller USA.

ZD420 vs ZD421 and GK420d in our listing

ZD420 vs ZD421. The ZD421 is the model in Zebra's current ZD400 Series list. In our listing, the Zebra ZD421d (ZD4A043-D01E00EZ) is recorded as 300 dpi direct thermal at up to 4 in/sec, a 4 inch print width, 0.585 to 4.25 inch media width, 512MB Flash and 256MB SDRAM, ZPL II and EPL2, and USB and Ethernet. The ZD421t (ZD4A042-30EM00EZ) is 203 dpi thermal transfer at up to 6 in/sec, and the ZD421d Healthcare (ZD4AH42-D01E00EZ) is the Healthcare equivalent at 203 dpi. Recorded speed, print width, memory and languages match the ZD420, so the practical reason to choose a ZD421 is buying into the model Zebra currently sells, while the ZD420 keeps an existing fleet identical.

ZD420 vs GK420d. The Zebra GK420d (GK42-202221-000) is the older G-Series direct thermal model. Our data records it at 203 dpi, up to 5 in/sec, a 4.09 inch print width, 4MB Flash and 8MB SDRAM, ZPL II and EPL2, and USB and Ethernet. The ZD420d is recorded as faster at 203 dpi with far more memory. Our Zebra G-Series GC vs GK vs GX guide covers the older range.

Full ZD420 range in our listing

Every ZD420 part number we list is below. All are 4 inch and refurbished. Select a part number to open its product page.

Common questions