Flat bed scanner network scanner feeder scanner scan technology cis scan format a4 supported document size 216 x 356 mm scan resolution 600 dpi interfaces usb 20 ethernet 10100 max scan speed 20 pagesmin automatic document feed 50 sheets document feeder automatic colour depth 48 bit opening angle 90 backwards functions duplex scanning number of keys 3 controls 3 scan buttons pdf scan custom compatible operating systems windows 8 windows 7 w