Zebra Advanced Desktop Printers Series Datasheet
Zebra $ ^{\textregistered} $ Advanced Desktop Printers

ZEBRA TECHNOLOGIES
GK420t $ ^{™} $ (direct thermal/thermal transfer)
GK420d $ ^{™} $ (direct thermal)
GT800 $ ^{™} $ (direct thermal/thermal transfer)
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CK42001
Advanced, Affordable and Flexible
Zebra's advanced line of desktop printers features professional-quality, reliable printing at a competitive price. Dependable performance and advanced features—along with fast print speeds, network manageability and easy-load designs—enable users to improve operational efficiencies, boost profitability and reduce downtime.
The advanced line is flexible, making it a top choice for a variety of mid-volume and distributed-printing applications. Reliably producing quality text, barcodes or graphics, the advanced line offers three connectivity interfaces and easy upgrades with ZPL $ ^{®} $ and EPL $ ^{™} $ programming languages.
The GK420t and GT800 offer direct thermal and thermal transfer printing power in sleek and compact designs. The GT800 features a 300-meter ribbon for fewer ribbon changes along with a standard moveable sensor. Additional GT800 options include 300 dpi and a full-width cutter or peel dispenser. The GK420d offers only direct thermal printing.
For healthcare-specific environments, Zebra offers the GK420 Healthcare printer—available in both thermal transfer and direct thermal models. These printers feature disinfectant-ready plastics to protect patient safety along with a medical-grade power supply that meets IEC 60601-1 standards to reduce the risk of electrical shock.
A small footprint and affordable quality make these advanced printers an excellent choice for companies worldwide.
Ideal for These Applications
Healthcare: patient identification, pharmacy and product labeling
Retail: price marking, coupon and receipt printing, inventory and product labeling
Transportation & Logistics: shipping labels
Hospitality & Leisure: boarding passes, bag tags
Security: visitor ID, evidence tracking, parking passes
SPECIFICATIONS AT A GLANCE $ ^{*} $
Printer Name
GK420t
GT800 (not available in North America)
Standard Features
• Print methods: Thermal transfer or direct thermal
• Programming language: EPL™ and ZPL® are standard construction: Dual-wall frame
- Tool-less printhead and platen replacement
• OpenACCESS $ ^{™} $ for easy media loading
• Quick and easy ribbon loading
• Auto-calibration of media
• Triple connectivity: USB, Parallel, Serial
- 300 meter ribbon capacity (GT800 Model only)
• 32 bit RISC processor (GT800 Model only)
• Certified Microsoft $ ^{®} $ Windows $ ^{®} $ drivers
ENERGY STAR $ ^{®} $ qualified
Printer Specifications
Resolution
• 203 dpi/8 dots per mm
Optional 300 dpi/12 dots per mm (GT800 Model only)
Memory
• GT800 Model: 8MB Flash, 8MB SDRAM
G-Series GK Models: 4MB Flash, 8MB SDRAM (standard)
Print Width
4.09"/104 mm
Maximum Print Length
39"/991 mm
Maximum Print Speed
• 5"/127 mm per second (203 dpi)
4"/102 mm per second (300dpi, GT800 Model only)
Media Sensors
• GT800 Model: Multi-position transmissive and full-width reflective sensor
• G-Series GK Models: Fixed reflective and transmissive sensors
Media Characteristics
Maximum Media Roll Size: 5"/127 mm O.D. on a 1"/25.4 mm, 1.5"/38 mm I.D. core
• Media Thickness: 0.003"/0.08 mm ~ 0.007"/0.18 mm
GT800 Model
• Media Width: 0.75"/19 mm to 4.49"/114 mm
• Media Length: 0.25"/6.5 mm to 39"/991 mm
• Media Types: Roll-fed or fan-fed, die cut or continuous direct thermal labels with or without black line, tag stock, continuous receipt paper, wristbands, and liner-free direct thermal media
G-Series GK Models
Maximum Label and Liner Length: Maximum non-continuous: 39"/991 mm
• Maximum non-continuous: 39"/991 mm
Maximum Label and Liner Width: 0.75"/19 mm to 4.25"/108 mm
• Media Types: Roll-fed or fan-fed, die-cut or continuous direct thermal labels with or without black line, tag stock, continuous receipt paper, wristbands
Ribbon Characteristics
GT800 Model
• Outside Diameter: 2.6"/66 mm (300 m); 1.34"/34 mm (74 m)
• Standard Length: 984' (300 m); 244' (74 m)
• Ratio:
– 1:4 media to roll to ribbon (300 m)
– 1:1 media to roll to