Zebra ZT421 Industrial Label Printer 6-inch, 203 dpi, Thermal Transfer, USB/Serial/Ethernet, Color LCD, RTC

The Zebra ZT421 Printer Series is a family of midrange industrial label printers designed for high‑volume labeling across manufacturing, warehousing, distribution and retail environments. Combining thermal transfer and direct thermal technologies, the ZT421 models deliver dependable label quality, robust metal construction and intuitive operation via a 4.3‑inch colour touch display. Configurations span resolutions and widths to suit diverse applications — from compact asset tags to wide-format shipping labels — and offer flexible connectivity (USB, Ethernet, Bluetooth, serial and optional Wi‑Fi), optional RFID and media‑handling upgrades such as peelers and rewinders to streamline production and reduce downtime in B2B operations.

Key Features

• Industrial construction: All‑metal frames and bi‑fold doors with illuminated media paths provide durability and easy access for routine loading and maintenance.
• Dual print technologies: Supports Thermal Transfer and Direct Thermal operation to handle durable, long‑life or short‑term label applications.
• Flexible media handling: Options include peeler, full rewinder and large roll support to improve throughput and simplify label workflows.
• Broad connectivity: Multiple interfaces — USB (including USB Host), RS‑232/Serial, 10/100 Ethernet, Bluetooth and optional Wi‑Fi — enable straightforward integration into existing systems.
• Operator‑friendly interface: A 4.3‑inch full‑colour touch display and side‑loading with color‑coded guides speed setup and reduce operator errors.
• Variant versatility: Multiple resolutions, print widths and optional RFID support allow selection of a ZT421 configured to specific industry needs.

Specifications

• Brand: Zebra
• Product Family: Zebra ZT421 Printer Series
• Product Type: Midrange industrial label printer
• Print Technology: Thermal transfer; Thermal direct
• Print Resolution: 203 dpi; 300 dpi
• Maximum Print Speed: 305 mm/s; 12 in/s; 14 in/s
• Maximum Print Width: 168 mm; 6 in; 6.6 in
• Maximum Media (Label) Width: 178 mm
• Maximum Roll Diameter: 203 mm
• Label Core Size: 3 in
• Connectivity: USB (including USB Host), RS‑232/Serial, Ethernet (10/100), Bluetooth (various versions), optional Wi‑Fi
• Printer Emulations: ZPL, ZPLII, EPL, EZPL (varies by model)
• RAM: 256 MB
• Flash Memory: 512 MB
• Display Size: 4.3 in
• Display Type: Colour touch screen
• Construction / Frame Material: Metal / All‑metal frame; illuminated media paths (select models)
• Special Features: Peeler, Rewinder, Real‑time clock (RTC), Print head failure detection, optional RFID (depending on variant)
• Dimensions (W x H x D): 338 x 425 x 500 mm