Connecting my MBA to my printer

I can't connect my MBA to my printer - I recently downloaded ML and installed it without a problem - but now I my computer cant't print - I have deleted the printer, and set it up again but the MAc only sees the fax rather than the printer.

I use a HP 7500

I have re-setup the wireless connectivity for the printer as well, and everything checks out.

Does anyone have any ideas why this is an issue?

Thanks guys