Zebra GK420t 203 dpi Thermal Transfer Label Printer (GK42-102210-000) | Recertified
SKU: GK42-102210-000
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Overview of Zebra GK420t 203 dpi Thermal Transfer Label Printer (GK42-102210-000) | Recertified
The Zebra GK420t 203 dpi Thermal Transfer Label Printer (GK42-102210-000) is a compact desktop barcode and label printer made for companies that require dependable, regular labeling without the expense or size of a complete industrial printer. This model combines 203 dpi thermal transfer printing with an intuitive clamshell design that makes media loading and maintenance easier. It is designed for retail, healthcare, light manufacturing and office settings. Zebra's acclaimed print engine produces consistent barcodes, shipping labels, shelf tags and asset labels that scan cleanly and appear professional, and its compact size makes it comfortable on busy counters or workstations. Depending on the application, you can select between more straightforward direct thermal stock and durable ribbon-based labels due to the GK420t's compatibility for both thermal transfer and direct thermal printing. The majority of common barcode, text and basic graphic requirements are best served by the 203 dpi resolution and regular labeling chores may be completed quickly with print speeds of up to 4 ips. A single button interface and front-panel status LEDs make operations easier for non-technical employees, cutting down on training time and user error. The GK42–102210–000 configuration is a suitable fit for both current and legacy systems because it usually has serial/parallel and USB connectivity (the precise mix can vary by location). The GK420t easily interacts with third-party applications and current Zebra label workflows because to its compatibility for the EPL and ZPL programming languages.
Key Features of Zebra GK420t 203 dpi Thermal Transfer Label Printer
• 203 dpi print resolution optimized for clear 1D/2D barcodes, text and simple graphics on standard labels.
• Thermal transfer and direct thermal printing in one device, enabling both durable, ribbon‑printed labels and cost‑effective direct thermal media.
• Compact desktop footprint that fits easily on retail counters, nursing stations, shipping benches or office desks.
• OpenACCESS clamshell design for fast, intuitive media and ribbon loading ideal in environments with frequent label roll changes.
• Print speeds up to 4 ips (in typical configurations) to support low‑ to mid‑volume workflows like shipping, warehousing, lab and retail labeling.
• Flexible connectivity options such as USB plus serial and/or parallel (and often optional Ethernet), allowing integration with older PCs and modern POS or back‑office systems.
• Supports EPL and ZPL printer languages for compatibility with Zebra’s ecosystem of label design tools and existing templates.
• Self‑calibrating media sensor that helps automatically detect label length and gaps/marks, reducing setup time and misalignment issues.
Benefits of Zebra GK420t 203 dpi Thermal Transfer Label Printer
🗹 Improves day‑to‑day efficiency that fast media loading and dependable printing reduce bottlenecks at shipping stations, receiving docks and customer service points.
🗹 Delivers professional, scannable labels that 203 dpi output and Zebra’s print quality ensure barcodes are easy to scan, helping reduce manual entry errors and returns.
🗹 Adapts to multiple labeling tasks: Thermal transfer for long‑lasting inventory or asset labels; direct thermal for quick, short‑term receipts, tickets or shipping labels.
🗹 Minimizes user training and downtime that simple controls, status LEDs and a clamshell mechanism make it easy for non‑technical staff to operate and maintain.
🗹 Protects existing investments support for EPL/ZPL and common interfaces allows businesses to drop the GK420t into existing workflows without rewriting label formats or replacing software.
Specifications
Specifications for Zebra GK420t 203 dpi Thermal Transfer Label Printer (GK42-102210-000) | Recertified
| Manufacturer | Zebra |
| Manufacturer Part Number | GK42-102210-000 |
| Product Name | Zebra GK420t 203 dpi Thermal Transfer Label Printer |
| Product Type | Label Printer |
| Print technology | Thermal transfer and direct thermal |
| Print resolution | 203 dpi (8 dots/mm) |
| Maximum print width | 4.09 in / 104 mm |
| Maximum print length | 39 in / 991 mm |
| Maximum print speed | 5 in/s / 127 mm/s |
| Processor | 32‑bit RISC (G‑Series platform) |
| Standard memory | 8 MB SDRAM (≈3 MB user‑available), 4 MB Flash (≈1.5 MB user‑available) |
| Programming languages | EPL2, ZPL II (both standard) |
| Media sensor type | Fixed transmissive (gap) and reflective (black mark) sensors |
| Media width | 0.75 – 4.25 in / 19 – 108 mm |
| Maximum media roll OD | 5 in / 127 mm on 1 in / 25.4 mm core |
| Media thickness | 0.003 – 0.007 in / 0.08 – 0.18 mm |
| Media types | Roll‑fed / fan‑fold, die‑cut, continuous, black mark, tag stock, receipt paper |
| Ribbon type | Wax, wax/resin, resin (on 0.5 in / 12.7 mm core) |
| Ribbon width | 1.33 – 4.3 in / 33.8 – 109.2 mm |
| Ribbon length | 244 ft / 74 m |
| Interfaces (GK42-102210-000) | USB 1.1, RS‑232 serial, Centronics parallel, internal 10/100 Ethernet (replaces serial/parallel) |
| Construction | Dual‑wall plastic frame, OpenACCESS clamshell design |
| Fonts/graphics | 16 resident expandable ZPL fonts, 1 scalable ZPL font, 5 EPL fonts; supports downloadable fonts and graphics |
| Bar code symbologies | 1D: Code 39, Code 128, EAN/UPC, Interleaved 2‑of‑5, etc.; 2D: PDF417, QR Code, Data Matrix, MaxiCode, Aztec (via ZPL/EPL) |
| Operating temperature | 40 – 105 °F / 4.4 – 41 °C |
| Storage temperature | −40 – 140 °F / −40 – 60 °C |
| Operating humidity | 10 – 90% non‑condensing |
| Storage humidity | 5 – 95% non‑condensing |
| Power supply (input) | 100–240 VAC, 50–60 Hz, auto‑ranging external PSU |
| Power supply (output) | 24 VDC, 2.5 A (typical) |
| Energy efficiency | ENERGY STAR qualified |
| Dimensions (GK420t) | 10.0 L × 7.6 W × 7.5 H in (254 × 193 × 191 mm) |
| Weight (GK420t) | 4.6 lb / 2.1 kg |
| Agency approvals (typical) | FCC Class B, CE, cTUVus, CSA, CCC, NOM, EAC, KCC, BSMI, BIS (GK420t) |
| Notable options | Peel‑and‑present dispenser, internal ZebraNet 10/100 print server, healthcare PSU variants |
User Guides
Frequently Asked Questions
Zebra GK420t 203 dpi Thermal Transfer Label Printer
Frequently Asked Questions (FAQ's)
What does “GK420t” mean?
- The “t” model is the thermal transfer variant (ribbon-capable) in the GK420 desktop series.
What is the print resolution?
- 203 dpi (8 dots/mm).
How fast can it print?
- Up to 5 inches per second (127 mm/s), depending on label size and content.
What’s the maximum print width?
- Up to 4.09 inches (104 mm).
Can it print 4x6 shipping labels?
- Yes — the maximum print width supports standard 4-inch shipping labels (including 4x6 formats).
Does it require ribbon?
- For thermal transfer labels, yes. It can also print on direct thermal media for short-life labels when you want to skip ribbon.
What ribbon length does it support?
- The specs list a standard thermal transfer ribbon length of 74 m (244 ft).
What label types can it handle?
- It supports roll-fed or fan-fold labels (die-cut or continuous), plus tag stock, receipt paper, and wristbands.
What connectivity does GK42-102210-000 include?
- This part number is commonly listed with USB and Ethernet connectivity.
Is Ethernet standard on all GK420t units?
- No — Ethernet is an optional internal 10/100 feature in the GK420 family and may replace serial/parallel depending on configuration.
Which printer languages are supported?
- ZPL/ZPL II and EPL/EPL2 are supported for broad application compatibility.
Is it compatible with Windows?
- Yes — Zebra provides Windows drivers and setup utilities for the GK420t family.
Is the GK420t still sold new by Zebra?
- No — Zebra lists the GK420t as discontinued, with the ZD421 noted as the replacement.
What’s a good current replacement model?
- Zebra’s recommended replacement line for the GK420t is the ZD421 series.
Is it good for healthcare labeling?
- Yes — Zebra identifies healthcare use cases for the GK420 series, and related variants exist for healthcare-focused workflows.
Can I use it in a warehouse or shipping station?
- Yes — shipping and warehouse labeling are common use cases for the GK420 family.
How big is the media compartment?
- It supports media rolls up to 5 inches (127 mm) outside diameter.
Does it support both reflective and transmissive sensing?
- Yes — specs list fixed reflective and transmissive media sensors.
Can it print 2D barcodes like QR codes?
- Yes — it supports multiple 2D symbologies, including QR Code and Data Matrix.
What’s the biggest “why buy” for this model today?
- It’s a proven, widely supported desktop Zebra printer with strong language compatibility (ZPL/EPL), fast 203 dpi output, and common USB/Ethernet configurations — ideal for maintaining established labeling workflows.