If you have a huge pile of papers you need to scan, the last thing you want to do is to have to place them one by one on the scanner. This is where document scanners become a necessity. These scanners have a port for feeding documents into the scanner called the ADF or automatic document feeder.
Most people are probably use to an ADF feature for copying but the same feature can also be used for scanning. And it can be a life-saver or a sanity-keeper depending on how you roll. Just place your stack of documents into the feeder and off you go. The scanner will handle the rest.
If you are thinking of getting a doc scanner, check out Fujitsu who has some of the best models.