Go to /usr/lib/libreoffice/program/spadmin and deactivate support for cups. Go to new printer and import your ppd-file from /etc/cups/ppd. In my case it works with Printer language Type postscript and pdf.
Go to /usr/lib/ libreoffice/ program/ spadmin and deactivate support for cups. Go to new printer and import your ppd-file from /etc/cups/ppd. In my case it works with Printer language Type postscript and pdf.