Zebra ZT421 RFID Printer
The Zebra ZT421 RFID is a 6-inch industrial RFID printer / encoder designed for organizations that need rugged, versatile and scalable UHF RFID label production. It is part of Zebra’s ZT400 Series RFID printer family, combining proven industrial durability with factory- or field-installable RFID encoding capability. The ZT421 RFID is not a desktop RFID printer and not a compact office label printer. It is an industrial thermal printer built for demanding manufacturing, transportation, logistics, retail distribution and healthcare environments. Its role is to print labels and tags while encoding compatible UHF RFID inlays for item-level tracking, asset tagging, compliance labeling and supply chain visibility. The key advantage of the ZT421 RFID is its 6-inch print format. The printer supports a maximum print width of 6.6 in / 168 mm, making it suitable for wider RFID labels and tags that exceed the practical limits of 4-inch printers. This makes it a strong fit for pallet labels, carton labels, shipping and receiving labels, compliance labels, warehouse labels and larger asset tags. The ZT421 RFID supports thermal transfer and direct thermal printing. Thermal transfer is suitable for durable labels and tags where print longevity is important, while direct thermal printing can be used for shorter-lifecycle labels where ribbon-free operation is preferred. The RFID system supports tags compatible with UHF EPC Gen 2 V2.1, ISO / IEC 18000-63 and RAIN RFID protocols. The integrated RFID reader / encoder is user-upgradable in the field, which gives businesses flexibility to add or expand RFID capability as operational requirements evolve. The ZT421 RFID can print and encode tags with a minimum pitch of 0.6 in / 16 mm. This supports closely spaced RFID inlays and can help reduce material usage, lower cost per label, reduce media roll changes and improve printer / encoder throughput. Adaptive Encoding Technology simplifies RFID setup by automatically eliminating complex RFID placement guidelines. Variable inlay placement supports a range of inlay positions, giving users more flexibility when choosing RFID media. RFID job-monitoring tools help track RFID performance, supporting more controlled and reliable print / encode workflows. The printer supports industry-standard, multi-vendor chip-based serialization and block permalocking of user memory compatible with ATA Spec 2000. These capabilities make the ZT421 RFID relevant for supply chain, logistics, asset management and other enterprise RFID workflows that require traceability and data control. The ZT421 RFID is built around an industrial construction. It has a metal frame, a bi-fold metal media cover with an enlarged clear viewing window, side-loading supplies path and a thin film printhead with E3 Element Energy Equalizer for consistent print quality. Adjustable dual media sensors support transmissive and reflective sensing. Operation is supported by a 4.3-inch full-color touch display with an intuitive menu for quick setup, printer operation and settings management, including RFID settings. Bi-colored status LEDs provide quick printer status visibility, while color-coded media paths and lighted paths make media and ribbon loading easier in everyday operation. The printer is powered by Link-OS and supported by Zebra DNA for Printers. Zebra DNA provides tools for deployment, management, visibility, development and integration. Printer Profile Manager Enterprise and MDM connectors can help manage Zebra printers remotely and integrate them into broader device management environments. Connectivity is broad and enterprise-ready. Standard interfaces include USB 2.0, RS-232 Serial, 10/100 Ethernet, Bluetooth 4.1 and dual USB Host. Optional communication cards include dual-band 802.11ax Wi-Fi and Bluetooth 5.3, dual-band 802.11ac Wi-Fi and Bluetooth 4.2, parallel interface, 10/100 Ethernet and applicator interface. The ZT421 RFID has a robust physical footprint. Its closed dimensions are 495 mm L x 336 mm W x 324 mm H / 19.5 in L x 13.25 in W x 12.75 in H, and it weighs 18.14 kg / 40 lb. This reflects its role as a durable industrial RFID printing platform rather than a lightweight desktop printer. The printer supports 203 dpi resolution as standard, with optional 300 dpi resolution. Maximum print speed is 12 ips / 305 mm per second. Print length is 102 in / 2591 mm at 203 dpi and 45 in / 1143 mm at 300 dpi. Media handling is suitable for wide industrial labels. For the ZT421, media width ranges from 51 mm to 178 mm in tear / cutter mode and from 51 mm to 171 mm in peel / rewind mode. Maximum media roll size is 203 mm outer diameter on a 76 mm inner diameter core, and supported media thickness ranges from 0.058 mm to 0.25 mm. Supported media types include continuous, die-cut, notch and black-mark media. Ribbon support is designed for industrial use. Standard ribbon length is 450 m, with ribbon widths from 51 mm to 174 mm for the ZT421. Optional media-handling accessories include rewind, peel, liner take-up, front-mount guillotine cutter with catch tray and ZKDU keyboard display unit for standalone printing applications. Typical applications include manufacturing item-level tagging, asset tagging, work-in-process, product ID / serial numbers, packaging labels, receiving and put-away labeling, transportation and logistics order picking, packing, shipping, receiving, cross-docking, compliance labeling, pallet and asset tagging, retail back-of-store operations, distribution centers, security tagging, healthcare laboratory labeling, specimen labeling, pharmacy labeling and asset management. Overall, the Zebra ZT421 RFID is a strong 6-inch industrial RFID printer / encoder for organizations that need rugged construction, wide RFID label support and enterprise manageability. Its strongest value lies in its 6.6 in / 168 mm print width, field-upgradable RFID system, Adaptive Encoding Technology, RAIN RFID support, minimum 0.6 in / 16 mm tag pitch, 4.3-inch color touch display, broad connectivity, Link-OS, Zebra DNA and suitability for manufacturing, logistics, retail distribution and healthcare RFID workflows.
Product Features
- Resolution: 203 dpi, 300 dpi
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