Fujitsu FI-4860C2 Operator's Manual page 84

3. Select the detection conditions from [Double Feed Detection]
(or [Multifeed Detection]) under [ADF Option].
The following are the detection conditions
None
Check
overlapping
Check length
Check
overlapping and
length
Furthermore, refer to "APPENDIX 2 DOUBLE-FEED (MULTI-FEED)
DETECTION CONDITIONS" on page AP-2 for detailed information about the
document for double-feed detection.
4. Click the [OK] button.
The display returns to the [TWAIN Driver] dialogbox. Then, perform the
scanning operation on the dialogbox.
2-14
2.5 Detecting Double-Feeds (Multi-Feeds)
Double-feed detection is not performed
The scanner monitors for the overlapping of documents. It
detects a double-feed by differences in document thickness
when two or more document sheets are fed overlapped.
The scanner monitors the length of documents. It detects a
double-feed by differences in the document length when two
or more document sheets are fed overlapping.
The scanner monitors both document overlapping and
length to detect double-feeds.