Automatic separation control function and skew reducer to ensure stable feeding paper protect function to prevent documents from being damaged stacking control function and elevator stacker for easy paper collection from the stacker manual feed mode to scan various types of documents environment-friendly product certified with energy star version 3 low profile design with operation panel and lcd for comfortable scanning cleaning mode for easy maintenance the fi-7900 achieves scanning speeds of 140 ppm 280 ipm a4 landscape, color, 200 300 dpi , is capable of scanning up to as many as 120,000 sheets a day, and is highly optimized for centralized scanning.The scanner is designed with operator usability as its first priority. It provides high quality technology for reliable scanning, a user-friendly design inherited from our high-end scanners, as well as enhanced image processing functions. Users can enjoy comfortable scanning while improving their work efficiency significantly. Scanning black white scanning colour modes grayscale, monochrome duplex adf scan speed b w, a4 280 ipm duplex adf scan speed colour, a4 210 ipm adf scan speed colour, a4 140 ppm adf scan speed b w, a4 140 ppm output monochrome depth 1 bit output greyscale depth 8 bit output colour depth 24 bit duplex scanning yes colour scanning yes optical scanning resolution 600 x 600 dpi maximum scan size 304.8 X 431.8 Mm design product colour black, grey built-in display yes scanner type adf manual feed scanner pe...