The Zebra ZT421 300 DPI Industrial Label Printer is a powerful 6-inch industrial printer built for professional barcode and label printing demanding accuracy and durability. Engineered for manufacturing, warehousing, logistics, pharmaceutical, garment, and distribution sectors, this printer combines high-resolution output with versatile printing methods.
Its 300 DPI resolution ensures sharp printing of fine text, detailed graphics, and precise barcodes like QR codes and DataMatrix. With a maximum print width of 168 mm (6.6 inches) and fast print speed of 254 mm per second, the ZT421 is ideal for producing large, complex labels quickly and efficiently.
Key Features of Zebra ZT421 300 DPI Industrial Label Printer
- 300 DPI high-resolution printing for small text and detailed images
- 6.6-inch maximum print width supports wide labels used in industrial and shipping applications
- Fast print speeds up to 254 mm/s for high-volume operations
- Supports both thermal transfer and direct thermal printing methods
- Easy-to-use 4.3-inch color touchscreen for configuration and printer management
- Robust industrial metal frame ensures durability in harsh environments
- Long ribbon support up to 450 meters for extended printing runs
- Multiple connectivity options including USB, Ethernet, Serial, and Bluetooth (depending on configuration)
- Compatible with 1D and 2D barcode formats including Code 128, EAN, QR Code, and DataMatrix
- Flexible media handling supporting continuous, die-cut, black-mark, and notched labels
- Optional accessories such as cutter, peeler, rewinder, and RFID integration available
Printing Technology and Performance
Thermal Transfer and Direct Thermal
The Zebra ZT421 offers dual printing methods:
- Thermal Transfer: Uses wax, wax-resin, or resin ribbons to produce durable labels suitable for long-term use.
- Direct Thermal: Prints on heat-sensitive label stock without ribbons, ideal for temporary labels like shipping tags.
High-Resolution Output
The 300 DPI resolution (12 dots/mm) guarantees crisp barcodes and detailed images, supporting small-format labels and enhancing scan reliability in automated systems.
Zebra ZT421 300 DPI Industrial Label Printer Specifications
| Specification | Details |
|---|---|
| Brand | Zebra |
| Model | ZT421 |
| Resolution | 300 DPI (12 dots/mm) |
| Printer Type | Industrial Barcode Label Printer |
| Printing Method | Thermal Transfer / Direct Thermal |
| Maximum Print Width | 168 mm (6.6 inches) |
| Maximum Print Speed | 254 mm/s (10 inches/second) |
| Maximum Print Length | 1,143 mm (45 inches) |
| Media Width | 51–178 mm (Tear/Cutter), 51–171 mm (Peel/Rewind) |
| Maximum Media Roll Diameter | 203 mm |
| Media Thickness | 0.058–0.25 mm |
| Ribbon Length | Up to 450 meters |
| Ribbon Width | 51–174 mm |
| Ribbon Core | 25.4 mm (1 inch) |
| Display | 4.3-inch Color Touchscreen |
| Memory | 256 MB SDRAM / 512 MB Flash |
| Connectivity | USB, Serial, Ethernet, Bluetooth (configuration-dependent) |
| Media Sensors | Transmissive and Reflective |
| Barcode Support | 1D and 2D including QR Code and DataMatrix |
| Printer Language | ZPL / ZPL II |
| Optional Features | Cutter, Peeler, Rewind, RFID |
| Dimensions | 495 × 336 × 324 mm |
| Weight | Approximately 18.14 kg |
Suitable Applications
- Manufacturing and industrial labeling: Product and batch identification, serial numbers, packaging labels
- Warehouse and inventory management: Inventory barcodes, pallet labels, stock tracking
- Courier and logistics: Shipping labels, parcel tracking, carton identification
- Garments and textile: Tag printing, carton identification, product tracking
- Pharmaceutical and healthcare: Product labeling, batch tracking, supply chain labels

