Fujitsu ScanSnap S510M Operator's Manual page 192

7. Load the documents onto the paper chute.
ATTENTION
170
•
Place all documents centering them under the pick roller.
(Documents that are not under the pick roller cannot be fed.)
•
Adjust the side guide to the widest document.
•
Carefully load the smaller documents, which cannot contact the side
guide, so that they can be fed straight. If the documents are skewed
during a scan, the quality of scanned images may be degraded
(chipped images/slant lines produced) or scanned images may be
output in different size from the original.
If you have difficulties feeding documents straight, it is recommended to
scan documents in several batches. Scan documents of about the
same size in one batch.
Note that smaller documents that cannot be guided by the side guide
may cause a jam.
SCAN
POWER
Width of the pick roller
SCAN
POWER