Feeder scanner document scanner network scanner scan technologies cmos cis scan format a4 supported document size 216 x 356 mm scan resolution 600 dpi interfaces usb 20 ethernet 10100 max scan speed 30 pagesmin automatic document feed 50 sheets weight of paper 40 209 gm document feeder automatic colour depth 24 bit scan documents documents business cards light source led tri colour rgb functions duplex scanning slant correction ultrasonic d