The Zebra GK420t monochrome desktop direct thermal/thermal transfer label printer comes equipped with parallel, serial, and USB ports, prints 5" per second at 203 dpi in a single color, and can be used to print labels, tags, receipts, or other media up to 4.09" wide. This middle level desktop printer can serve as a direct thermal printer, which heats thermal paper to produce the print, or as a thermal transfer printer, which heats a ribbon to produce the print on the paper. Direct thermal/thermal transfer printers use heat instead of ink and are typically smaller, quieter, faster, and more energy-efficient than dot-matrix printers. The GK420t has a maximum print speed of 5" per second at 203 dpi (dots per inch) and prints labels up to 39" long. The 32-bit processor combined with 8 MB of SDRAM memory and 4 MB of flash memory offers faster first label printing with extensive media graphics. EPL and ZPL programming languages are standard.
The GK420t printer's double-walled casing is made of ABS (acrylonitrile butadiene styrene), which helps resist impact. An open-access design facilitates media loading. Parallel, serial, and USB ports allow connectivity to a computer or other devices (cables sold separately). A reflective sensor allows the printer to identify the gaps, holes, notches, or black marks between labels to print the labels accurately. A transmissive sensor enables it to detect when a roll of media has run out. The auto-detectable power adapter can accept AC power between 100 and 240 volts. This product is suitable for use with black bar, black mark, continuous, continuous receipt, die-cut, fanfold, gap, notched, perforated, receipt, roll-fed, tag, or tag stock media (all sold separately). The maximum outside diameter for rolls is 5".
203 dpi (8 dots/mm)
8 MB SDRAM; 4 MB flash
Label and Liner Width Range
0.75" to 4.25"
Label and Liner Length Range
0.38" to 39"
Maximum Roll Diameter
0.5", 1.0", and 1.5"
Media Thickness Range
0.003" to 0.0075"
Black bar, black mark, continuous, continuous receipt, die-cut, fanfold, gap, notched, perforated, receipt, roll-fed, tag, tag stock
40 to 105 degrees F
10 to 90 percent non-condensing
-40 to 140 degrees F
5 to 95 percent non-condensing
Voltage and Frequency
Auto-detecting 100-240 VAC, 50-60 Hz
7.5 x 7.6 x 10 inches (H x W x D)*
* H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
Label printers, also known as label makers, can be used to print labels, tags, receipts, and other similarly sized media. Direct thermal and thermal transfer label printers use heat instead of ink to print on coated thermal media. A parallel, serial, or USB port allows a label printer to be connected to a computer. An Ethernet port or wireless capabilities may enable it to be connected to a computer network. Label printers can be used in a variety of commercial environments, including warehouses, laboratories, retail stores, health care facilities, and shipping and receiving facilities.
Zebra Technologies manufactures barcode, receipt, kiosk, and radio-frequency identification (RFID) printers and accessories. The company, founded in 1969, is headquartered in Lincolnshire, IL.