Courier vouchers are issued in pdf format. In order to print them automatically on the default printer, a pdf printer software must be set in courier.ini file (in EMDI root folder). Any pdf reader that supports print via line command can be easily used.
For example:

 

Ghostscript

To print automatically it must be configured in the courier.ini file, located in the main EMDI folder:

[general]

pdf_attributes=-dNORANGEPAGESIZE -dPrinted -dNoCancel -dBATCH -dNOPAUSE -dNOSAFER -q -dNumCopies=1 -dQueryUser=3 -sDEVICE=mswinpr2 pdf_software=C:\Program Files (x86)\gs\gs9.52\bin\gswin32c.exe

for help:

“C:\Program Files (x86)\gs\gs9.52\bin\gswin32c.exe” -h

Foxit Reader

Bullzip PDF Printer