The xerox documate 4790 is the ideal scanner for both large volume and distributed scanning environments it has a duty cycle of up to 10 000 sheets per day and has been engineered with innovative features for easy operation and productive batch scanning including stapled document ultrasonic double feed detection and support for long document scanning the xerox documate 4790 scans up to 90 ppm and 180 ipm and includes a 200 page automatic document feeder that accepts up to a3 size document