I have recently purchased an imac for my photography only. I have OS 10.8 & have purchased Aperture & using it ok. I have managed to network my printer & also connect the imac to NAS storage. All good or so you would think. Pics look great on screen issue comes when I come to print them, faint black lines occur every 3/4 of inch across page, ok when I do a test print with text. Prints fine from window laptop also connected to network. Apple says no drivers to download. Currently regretting trying to switch, any help appreciated as despite hours researching on web nothing is helping.