Bug#883554: cups keeps breaking network printer with implicitclass:

[Till Kamppeter]

Can you please run the command

avahi-browse -v -t -r --all
and post its output here?

Please also edit /etc/cups/cups-browsed.conf, to have a line

DebugLogging file

without "#" in the beginning. Restart cups-browsed. Wait some seconds 
and stop cups-browsed. Then attach the file

/var/log/cups/cups-browsed_log

to your answer.

   Till