In order to install ribbon for ZEBRA GX420T, follow these steps:


  • Remove the wrapping and pull pull its adhesive strip free.
  • Open the printer and place the new ribbon roll.
  • Rotate the roll until the notches are aligned and lock into the left side of the roll core.
  • Install the Take-Up core.
  • Rotate the roll until the notches are aligned and lock into the left side of the roll core.
  • Pull the transfer ribbon's leader off the roll and attach it with the adhesive strip on the leader to the empty ribbon core on the Take-Up spindle.
  • Rotate the thumb wheel on the left side of the supply spindle until the ribbon is pulled tight across the print-head.