Macbook pro can't find printer

Hi, please could anyone help, I have installed the Yosemite 10.10.2 onto my Ma's macbook and it refused to find the wifi printer so I too the printer off and am now not able to ADD it back, when I click on the + sign, the options are just blank and stay blank ???

I have reset the router wifi router, updated the Macbook and re set the network on the printer ( it is a Brother MFC J5910dw ) I have turned off and then turned on the firewall and even downloaded and installed the drivers for the printer and scanner from the Brother website ??? and still, it will not entertain the idea

Please Help 😟