print to printer attached on Win7

[E. Gerlach]

Hi,
I try to print with CUPS to a printer connected to Win7:

DeviceURI http://win7empf:631/bro5140
DeviceURI ipp://win7empf:631/bro5140
DeviceURI ipp://win7empf/printers/bro5140

But Win7 does not react. The job is still queued on Linux machine.
The output of /var/log/cups/error_log ist without any error. Firewall of
Win7 is off, printer name is "bro5140".

Ideas? - I even uses IP address instead of the name win7empf. Nothing
happens :-(

thx
Ekkard