Product guide
Zebra Desktop Series G-Series Product Guide
PN: 14543L-001 G-series product Guide Rev. 1
6/18/2008 - 45-
Printing Specifications
• Resolution: 203 dots/inch (dpi) (8 dots/mm)
• Dot Pitch: 0.0049” (0.125mm)
• Maximum print length: 39.0" (991mm)
• Minimum print length: 0.005" (0.127mm – one dot)
• Print length in line mode: Unlimited (GK420d)
• Maximum print width: 4.09" (104mm)
• Minimum print width: 0.005" (0.127mm – one dot)
• Programmable print speed: 2, 3, 4 & 5ips
(51, 76, 102, 127 mm/s)
• Bar code modulus “X” dimension: 203 dpi = 5mil to
50mil
Ribbon Specifications (thermal transfer units)
NOTE: For optimum print quality and printer performance,
use of Zebra genuine ribbon is recommended as well as a
notched ribbon core.
• Ribbon Width: 1.33” (33.8mm) to 4.3” (109mm).
• Ribbon Capacity: 1 roll of ribbon per 1 roll of 5”OD
media
• Core ID: 0.5” (12.7 mm).
• Ribbon OD: 1.36” (35 mm).
• Ribbon Length: 244' (74m) using 0.000328" ribbon
thickness
• Ribbon Type: Wax, wax/resin, and resin.
Media Specifications
NOTE: For optimum print quality and printer performance,
use of Zebra genuine supplies is recommended.
• Media Width: 0.75” (19mm) – 4.25” (108mm)
• Label Length:
o 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
o Minimum using dispenser -0.50”(12.7 mm)
o Maximum - 39.00" (990mm)
• Min Core Inner Diameter: 0.5” (12.7mm)
• Max Roll Diameter: 5.00” (127mm)
• Media Thickness: 0.003” (0.08mm) - 0.0075” (0.19 mm)
• 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
Calibration Procedure
• The GK420 is equipped with a standard auto-calibration
feature that can be set to initiate automatically during
start-up of the printer - utilizing two to four labels to
calibrate for efficient operation and less waste. The
printer will also save the new settings in memory until the
next calibration is performed.
• A manual calibration procedure can also be performed, if
required. Consult your User’s Guide for more details on
the specific manual calibration steps.
ZPL Programming Language (ZPL/ZPL II)
• Communicates in printable ASCII characters
• Compatible with mainframe, mini, and PC hosts
• Downloadable objects include graphics and bitmap fonts,
label templates and formats
• Automatic memory allocation for format while printing
• Automatic serialization of fields
• Format inversion (white on black)
• Mirror-image printing
• Four position field rotation (0º, 90º, 180º, 270º)
• Slew command
• Programmable label quantities with print, pause
• Status messages to host upon request
ZPL Font Specifications
203 dpi (8 dots/mm)
Font Matrix
(in dots)
(H x W)
Type* Minimum Char.
Size
(H x W)
Maximu
m
C.P.I.
A 9 x 5 U-L-D .044" x .030" 33.3
B 11 x 7 U .054" x .044" 22.7
C,D 18 x 10 U-L-D .089" x .059" 16.9
E 28 x 15 OCR-B .138" x .098" 10.2
F 26 x 13 U-L-D .128" x .079" 12.7
G 60 x 40 U-L-D .295" x .236" 4.2
H 21 x 13 OCR-A .103" x .093" 10.8
GS 24 x 24 SYMBOL .118" x .118" 8.5
P-V U-L-D Backward compatible
w/ S-300
Ø 15 x 12 U-L-D Scalable (Smooth) Font
* U = upper case, L = lower case, D = descenders
• Character Fonts: Standard bitmapped Zebra fonts: A, B,
C, D, E (OCR-B), F, G, H, (OCR-A), GS, P, Q, R, S, T,
U, V & Ø Smooth font (CG Triumvirate
™
Bold
Condensed).
• Supports user defined fonts and graphics – including
custom logos
• Bitmap fonts are expandable up to 10 times, height and
width independent. Fonts E and H (OCR-B and OCR-
A), however, are not considered in spec when expanded.
• Smooth scalable font Ø (CG Triumvirate
™
Bold
Condensed) is expandable dot-by-dot, height and width
independent, while maintaining edges to a max. 1500 x
1500 dots.
ZPL Barcode Symbologies
• Bar code ratios: 2:1 (non-rotated) and 3:1
• Linear bar codes: 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