Printing Specifications:
Parameter 203 dpi (8 dots/mm)

Dot pitch 0.0049″ (0.125 mm)
Maximum print length 39.0″ (991 mm)
Minimum print length 0.005″ (0.127 mm one dot)
Print length in line mode Unlimited (GK420d)
Maximum print width 4.09″ (104 mm)
Minimum print width 0.005″ (0.127 mm one dot)
Programmable print 2, 3, 4 & 5 ips (51, 76, 102, 127mm/sec)
speed
Bar code modulus X 203 dpi = 5 mil to 50 mil
dimension

Media Specifications:
NOTE: For optimum print quality and printer performance,
use of Zebra genuine supplies is recommended.

Media Width: 0.75″ (19 mm) 4.25″ (108 mm)

Label Length: – Using tear off mode:
Minimum Length Model Printing Mode
0.38″ (9.7 mm) GK420d Direct thermal
0.38″ (9.7 mm) GK420t Thermal transfer
0.5″ (12.7 mm) GK420t Direct thermal

– Minimum using dispenser – 0.50″ (12.7 mm)

– Maximum – 39.00″ (990 mm)

Core Inner Diameter: 0.5″ (12.7 mm), 1.0″ (25.4 mm), 1.5″ (37.1 mm) Max Roll Diameter: 5.00″ (127 mm) Media Thickness: 0.003″ (0.08 mm) – 0.0075″ (0.19mm) Media Sensing: fixed reflective and transmissive gap, black line, and notch Media Types: Roll-fed or fan-fold, die cut or continuous direct thermal labels with or without black line, tag stock, continuous receipt paper, and wristbands Dispenser peeler (optional) may not work with all media types and should be tested for media compatibility

Environmental Specifications:
Operating Temperature: 40 to 105F (4.4 to 41C) Storage Temperature: -40 to 140F (-40 to 60C) Operating Humidity: 10% to 90% non-condensing R.H. Storage Humidity: 5% to 95% non-condensing R.H.

Electrical Specifications:
Auto-detectable (PFC Compliant) 100-240VAC, 50- 60Hz rated at 70Watts
ENERGY STAR 2.0 qualified printers
IEC 60601-1 Certified (GK420 Healthcare models only)

Agency Approvals:
Emissions: FCC Part 15, Subpart B (Class B), ICES 003 , VCCI, C-Tick, CQC, EAC, KCC, BSMI, ICES-003
Emissions and Susceptibility: EN55022 (Class B), EN55024, EN61000-3-2, EN61000-3-3
Safety: CB Scheme IEC 60950-1, TUV NRTL, C-Tick, CCC, NOM, EAC, KCC, BSMI, BIS

Physical Specifications:
(no options installed)
GK420d GK420t
Height: 6.0″ (152 mm) 7.5″ (191 mm)
Width: 6.75″ (171 mm) 7.6″ (193 mm)
Depth: 8.25″ (210 mm) 10.0 (254 mm)
Weight: 3.0 lbs (1.4 kg) 4.6 lbs (2.1 kg)

Communications Specifications:
Centronics Parallel (36 Pin) connector ports
RS-232 auto-sensing, adaptive Serial interface, DB-9
USB V1.1, bi-directional Internal 10/100 Ethernet optional (replaces Serial and Parallel ports)

Software Tools:

Zebra Link Solutions

Zebra Designer Pro An intuitive, easy-to-use software program for creating complex label designs (option) Zebra Designer Offers basic features for simple label design (standard) Zebra Net Bridge Enterprise Centrally manage Zebra printers anywhere on your global network from a
single PC screen (option) Zebra Net Utilities v 7.0 Provides printer administration, management, alerting capabilities and more for Windows 95/98/2000/2003/ME/NT/XP (standard) Zebra Designer Windows Driver Microsoft certified for Windows Vista, Windows 7, Windows 8 Windows
8.1, Windows 2008, and Windows 2012 (downloadable from www.Zebra.com) ZBI 2.0 Powerful programming language that lets printers run standalone applications, connect to peripherals, and much more (option) ZBI-Developer Programming environment for developers to simplify creation, testing and distribution to printers of complex ZBI 2.0 programs (standard with ZBI 2.0) POS Driver Supports integration with Windows- based point-of-sale applications.

Firmware
EPL2 Eltron Programming Language simplifies label formatting and enables format compatibility with legacy
applications
EPL Line Mode support (GK420d) enables format compatibility with legacy applications
ZPL II Zebra Programming Language Provides sophisticated label formatting and printer control. Compatible with table top and mobile Zebra printers. Web View Connect and control Zebra bar code printers with the printers Web interface using a common Web browser Alert Printers equipped with Zebra Net print servers will notify you via any email-enabled, wired, or wireless
device to minimize downtime

ZPL Barcode Symbologies:
Barcode Ratios: 2:1 (non-rotated) and 3:1
Linear Barcodes: Code 11, Code 39, Code 93, Code 128, UPC-A, UPC-E, EAN-8, EAN-13, EAN-14, UPC- A and UPC-E with EAN 2 or 5 digit extensions, Plessey, POSTNET, Standard 2 of 5, Industrial 2 of 5, Interleaved 2 of 5, LOGMARS, MSI, Codabar, and GS1 DataBar (formerly RSS) 2-dimensional Barcodes: PDF417, MicroPDF-417, Code 49, Maxicode, Codablock, Data Matrix, QR code, and Aztec

EPL Barcodes Symbologies:
Linear barcodes: Code 39, Code 128A, B & C (User selectable/Auto), UCC/EAN-128, Code 93, Codabar,
Interleaved 2 of 5, UPC-A, UPC-E, UPC-A with 2 and 5 add on, UPC-E with 2 and 5 add on, EAN 13, EAN 8,
EAN 13 with 2 and 5 add on, EAN 8 with 2 and 5 add on, Postnet (5, 9, 11, & 13 digit) Japanese Postnet, Plessey (MSI-1), MSI-3, GermanPost Code, and GS1 DataBar (formerly RSS) 2-dimensional Barcodes: Maxicode (modes 2,3,4,6), PDF417, MacroPDF417, QR Code, Data Matrix, and Aztec

Optional Features:
Dispenser (peeler) Label peel and present with label present sensor (not available on GK420 Healthcare) Ethernet – 10/100 internal offered in combination with USB interface (replaces Serial and Parallel ports) Font Packs Asian and other international font kits
Power Cord US, Europe, UK, Australia, Argentina, Japan, and China
ZBI 2.0 Field installed via activation key Accessories
ZKDU and KDU Plus keyboard display units for stand-alone printing solutions