Versatility, high-speed and superior reliability make the Xerox DocuMate 4799 a powerful scanner for demanding environments. With up to a 40,000 page per day duty cycle, this innovative workhorse scans up to 112 pages per minute and employs three advanced sensor systems: ultrasonic double feed detection, stapled document detection and intelligent feed control to ensure that your scan job will not get interrupted. Documents of various sizes can be stacked together in the automatic feed tray without worry because the Xerox DocuMate 4799 employs not one, but three ultrasonic double feed detection sensors to cover the entire width of a document. The scanner has another set of sensors designed to detect staples anywhere in a document. As soon as a staple is detected, the scanning process is halted - minimizing damage to the optical glass and your documents. A third set of sensor constantly monitors the thickness of document being fed into the scanner and automatically adjusts the roller pressure to ensure that all pages are accurately fed.