For narrow media, If change the print head pressure adjustment knob setting can’t get the 
printout without ribbon wrinkle, the Z-axis mechanism adjustment knob should be adjusted 
to get the satisfied printout. This Z-axis mechanism adjustment knob is used to fine tune the 
right side pressure of print head. Before fine tune the print head right side pressure, please 
set the pressure adjustment knob to index “1” then use use the Z-axis adjustment knob to 
fine tune the right side print head pressure. Please refer to the adjustment steps as below.