ZEBRA label printer ZD421d TD

With a rapid 152 mm/s print speed and 203 dpi resolution, the ZD421d delivers crisp labels without slowing down your workflow. This direct thermal desktop printer handles media rolls up to 127 mm diameter, minimizing reloads in busy environments.

Overview

The Zebra ZD421d is a compact yet rugged label printer built for retail, healthcare, logistics, and light manufacturing. It prints on direct thermal labels, receipts, and tags up to 104 mm wide, using ZPL II, EPL 2, and XML languages for seamless integration with existing systems. Standard connectivity includes USB 2.0, USB Host, Ethernet 10/100, and Bluetooth Low Energy 5, with optional Wi-Fi, serial, or parallel interfaces for flexible deployment.

What stands out

• Dual-wall frame construction ensures durability in demanding settings.
• Movable reflective and multi-position transmissive sensors support a wide range of media types.
• 256 MB SDRAM and 512 MB Flash memory store multiple label formats and fonts.
• Real-time clock enables date/time stamping without host intervention.
• External auto-ranging power supply (100-240 VAC) adapts to global power standards.

Technical details

• Print technology: Direct thermal
• Maximum print width: 104 mm
• Print speed: 152 mm/s (6 ips)
• Resolution: 203 dpi (8 dots/mm)
• Connectivity: USB 2.0, USB Host, Ethernet 10/100, Bluetooth LE 5
• Memory: 256 MB SDRAM, 512 MB Flash
• Media roll diameter: 127 mm max
• Core diameters supported: 12.7 mm, 25.4 mm, 38.1 mm
• Programming languages: ZPL II, EPL 2, XML
• User interface: 3-button with 5 status icons
• Real-time clock: Standard
• Power: External auto-ranging 100-240 VAC, 50-60 Hz

Our verdict

The ZD421d combines fast output, flexible connectivity, and robust construction in a space-saving design. It’s an excellent choice for businesses needing reliable, high-quality label printing without the complexity of thermal transfer.