Driverless printing ipp

Hi community,

I am a newbie and not experienced with FreeBSD.

The cups ipp print didn't work. ipp-usb is installed. I can only
print with the driver from HP. Every attempt with ipp failed. (I have 
made quite a few)
In cupsd.conf the Listen address is "localhost:631" and "cups browsed" 
is disabled.
I tried with loglevel info(but not figured out in error_log).

Would you like to give me a hint, what I did wrong in the settings?
Or something did changed in the last month?

Please can someone help

Manfred