User guide
© IZUM, 18. 3. 2013, VIF-NA-20-EN, V1.0  i 
CONTENTS 
1  Introduction ......................................................................................................... 1 
2  Using the GK420t printer .................................................................................... 1 
2.1  Description of the printer ................................................................................................. 1 
2.2  Connecting to power supply and installing printer .......................................................... 3 
2.3  Cleaning the printhead ..................................................................................................... 4 
2.4  Placing the media roll and loading black ribbon cartridge .............................................. 5 
2.5  Resetting printer ............................................................................................................... 7 
2.6  Status light ........................................................................................................................ 7 
3  Installing driver .................................................................................................... 8 
4  Printer settings (for COBISS3) .......................................................................... 10 
5  Setting logical destinations in COBISS3 ........................................................... 13 
6  Potential printing problems ............................................................................... 15 
6.1  Printing an extra blank label .......................................................................................... 15 
6.2  Printing an extra blank label .......................................................................................... 17 










