User guide
Zebra GK420t User Guide  COBISS System Management 
6/18  © IZUM, 18. 3. 2013, VIF-NA-20-EN, V1.0 
2.  The media roll must go under both media guides. 
Figure 11 : Pushing the media under the media guides 
3.  Place a new ribbon roll on the inner holder. Then, place an empty ribbon core, remained 
from the ribbon, on the front holder. Pay attention to lock the notches of the ribbon core 
properly. Attach the adhesive strip of the black ribbon cartridge to the empty ribbon core. 
Prior to use, pull the ribbon cartridge tight across the printhead. 
Figure 12 : Loading black ribbon cartridge 
Under media 
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