Fujitsu ScanSnap S1100i Basic Operation Manual page 80

If eject roller is difficult to clean, try cleaning it from the back while you keep the top
cover slightly open.
HINT
Pressing the [Scan/Stop] button seven times will rotate the feed roller and the eject roller one
revolution.
3.
Close the top cover and the output guide.
Top Cover
a It clicks when it returns to its original position.
ATTENTION
Make sure that the top cover is completely closed.
Otherwise, paper jams or other feeding errors, or image faults may occur.
Eject Roller (x 1)
Output Guide
Feed Guide
80
Cleaning the Inside of the ScanSnap