I believe that you need to go into cups admin and set up the printer.
I'm not sure if you have a cups password setup. To do this you need to access a shell as root and use the command: lppasswd -a <user name>.
Then, type in the following address in your browser - http://localhost:631/
to get to cups admin -
This will allow you to use the user name and password to access the cups admin tool and set up your printer.
Hope this solves your problem.