The Duplex Combo Scanner has an optical resolution of up to 600 dpi and interpolated resolution of up to 1,200 dpi. It has a simplex speed of up to 25 ppm (in black and color) and a duplex speed of up to 50 ipm. The Xerox Duplex Combo Scanner ($269.99) is a new device that combines a flatbed platen with an automatic document feeder (ADF) in one machine.
