As it says in the title airprint stopped working. Now it has always worked before, until today. My Canon is connected to my mac via USB, and sharing is on and my printer is selected etc. But here is on thing i find confusing on my ipad 1 and 2 it searches for printers and it cant find any, but my iphone which i guess saved it wont search and will print flawlessly. Now on my printers app on my mac it has an option for internet diagnostics and when that is completed it says cannot find "canon". so i am at a loss here can anyone help?