Fujitsu FI-4530C Operator's Manual page 52

3. Select the detection conditions from [Double Feed] under [ADF Option].
The following are the detection conditions
None
Check overlapping
Check length
Check overlapping
and length
Furthermore, refer to "6.5 Double-feed Detection Conditions" on page 108 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.
Double-feed detection is not performed
The scanner uses a ultra sonic sensor to monitor the
thickness of documents that are fed. It detects a dou-
ble-feed by differences in document thickness when
two or more document sheets are fed overlapping.
The scanner uses an optical sensor to monitor the
length of documents that are fed. 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 thickness and
length to detect double-feeds.
fi-4530CImage Scanner Operator's Guide
2.8 Detecting Double-Feeds
2
47