• Scanning Duplex• Scanning Method CIS (Contact-type colour image sensor) Front and back sides Black background (Black sensor roller)• Scanning Speed: Binary 200 dpi, Simplex 22 ppm (A4, Portrait); Duplex 40 ip• Colour 150 dpi Simplex 9 ppm; Duplex 16 ipm• Optical Resolution: 600 dpi (Main and Sub scanning direction)• Automatic Detection Ultrasonic double-feed detection• Feed Tray Capacity - 100 sheets: 75 g/m2 (20 lbs.); 120 sheets: 64 g/m2 (17 lbs.)