Si, l'ho letta bene la guida e ho anche installato il pap.
luca@Satellite:~$ /usr/lib/cups/backend/pap
network pap "Unknown" "AppleTalk Devices via pap"
atp_rresp: Connection timed out
/usr/lib/cups/backend/pap: 1: /usr/bin/timeout: not found
-e network pap://%2a/Apple%20LaserWriter%2012%2f640%20PS/LaserWriter "Unknown" "Apple LaserWriter 12/640 PS@* (pap)"
luca@Satellite:~$