Zebra GK420d Direct Thermal Printer

Zebra GK420d Direct Thermal Desktop Label Printer is a reliable and compact barcode label printer designed for retail, healthcare, logistics, manufacturing, warehousing, and office environments. Utilizing direct thermal printing technology, it produces high-quality labels, barcodes, shipping labels, receipts, wristbands, and asset tags without requiring ink, toner, or ribbons. With a print resolution of 203 dpi, print speeds of up to 5 inches per second, and support for both ZPL and EPL programming languages, the GK420d delivers dependable performance for low- to medium-volume label printing applications while minimizing operating costs.

Product Features

Direct Thermal Printing Technology

The Zebra GK420d uses direct thermal printing, eliminating the need for ink cartridges, toner, or ribbons. This reduces maintenance costs while providing crisp, high-quality labels for everyday business operations.

Fast Label Printing Performance

Capable of printing at speeds of up to 5 inches (127 mm) per second, the printer efficiently handles shipping labels, barcode labels, inventory tags, and product identification labels.

High-Quality 203 dpi Resolution

With a print resolution of 203 dpi (8 dots/mm), the GK420d produces clear text, sharp graphics, and highly readable 1D and 2D barcodes for professional labeling applications.

Multiple Connectivity Options

The printer includes USB, Serial, and Parallel interfaces as standard, allowing easy integration with desktops, POS systems, warehouse management systems, and business applications. Ethernet connectivity is available on select configurations.

Broad Media Compatibility

The GK420d supports roll-fed and fan-fold direct thermal labels, continuous media, tag stock, receipts, and wristbands, providing flexibility for a wide variety of labeling requirements.

Compact Desktop Design

Its space-saving footprint makes it ideal for offices, retail counters, warehouses, healthcare facilities, and shipping stations where workspace is limited.

Zebra Programming Language Support

Support for both Zebra Programming Language (ZPL) and Eltron Programming Language (EPL) ensures compatibility with existing Zebra printer deployments and label printing software.

Easy Media Loading

The OpenACCESS™ clamshell design allows quick media loading and simplified maintenance, helping reduce downtime during label changes.

Product Specifications

• Product name: Zebra GK420d Direct Thermal Desktop Label Printer
• Printer type: Desktop barcode and label printer
• Print technology: Direct Thermal
• Print resolution: 203 dpi (8 dots/mm)
• Maximum print speed: Up to 5 inches (127 mm) per second
• Maximum print width: 4.09 inches (104 mm)
• Maximum label width: 4.25 inches (108 mm)
• Maximum roll diameter: 5 inches (127 mm)
• Media types: Roll-fed labels, fan-fold labels, continuous labels, tag stock, receipts, and wristbands
• Media sensing: Gap, black mark, and transmissive sensing
• Standard memory: 8 MB SDRAM
• Flash memory: 4 MB
• Processor: 32-bit RISC processor
• Connectivity: USB, Serial (RS-232), and Parallel
• Printer languages: ZPL II, EPL2, EPL Line Mode
• Barcode support: 1D and 2D barcode symbologies
• Fonts: Resident scalable and bitmap fonts with Unicode support
• Power supply: Auto-switching 100–240V AC
• Operating system compatibility: Windows and systems supporting Zebra printer drivers
• Dimensions (W × D × H): Approximately 7.9 × 10.2 × 6.7 inches (201 × 259 × 170 mm)
• Weight: Approximately 3.2 lbs (1.5 kg)
• Applications: Shipping labels, barcode labels, inventory management, retail labeling, healthcare wristbands, warehouse operations, and asset tracking