Zebra GK420t Direct Thermal or Thermal Transfer Label Printer with PSU, USB Cable, Ribbon and 250 4"x6" labels.

In working order, good print quality.


It can be used with wax ribbon for Thermal Transfer printing or without ribbon for Direct Thermal printing. If printing without ribbon Media Type must be set to Thermal Direct or it may blink red Ribbon Out error.

In good working order, good print quality. It may have some wear signs.

After printer is installed and connected go to Control Panel- Devices and Printers , right click on Printing preferences, set correct label size, go to Dithering, set to None and click Apply. Then press feed button and keep it pressed until green LED blinks twice and release it. Printer will Calibrate itself and after that will be ready for printing.

Print darkness can be adjusted by lowering print speed or changing darkness.


If you need express delivery- please choose this delivery option from drop down menu when paying for the item.


For installation instructions on a Mac please watch this video on Youtube:

https://youtu.be/t2Nx44xWhU4?si=6LfhDl0YsTXmUi4p44xWhU4&t=1s

Some troubleshooting tips:

If printer installs but when you send print job - nothing happens.
 Go to Control Panel - Devices & Printers - Right click on printer- choose Remove. Turn printer Off then On again. Wait until printer will  install again, go to Printer Preferences- Options-set label size- Tools- Run Calibration and  try to print delivery label again. Don't print Windows test print. If unsuccessful - repeat procedure until Windows install printer correctly or can try through Device Manager-Printers- Uninstall.
 If printer prints empty labels.
First off all make sure that labels are loaded facing up. 
Use labels supplied with printer. Some labels are designed for Thermal Transfer only- they work with ribbon only.
If printer is printing empty label after printing correct one- Run Calibration.
 Any other problems- please contact me. My details in Business Details at the bottom of listing.
You can download VAT Invoice by going into Order Details- View Tax Invoice