User guide
Zebra GK420t User Guide  COBISS System Management 
12/18  © IZUM, 18. 3. 2013, VIF-NA-20-EN, V1.0 
Once you set up parameters under the Options tab, click the Advanced Settings tab and make 
sure that Thermal Transfer is selected under "Media Type" (see Figure 18). 
Figure 18 : Advance printing settings 
At the end, check if None is selected under the Colour dithering tab (see Figure 19). 
Figure 19 : Colour dithering 










