Document scanner a3 scanner scan technology cis scan format a3 supported document size 300 x 3000 mm scan resolution 600 dpi interface usb 20 max scan speed 60 pagesmin automatic document feed 60 sheets document feeder automatic colour depth 24 bit light source led tri colour rgb functions auto page size and colour detection slant correction duplex scanning controls scan buttons compatible operating systems windows 8 windows 7 windows vista wind