Fujitsu ScanSnap fi-5110EOX Operator's Manual page 77

4. Click the [OK] button to close the window.
The setting is enabled from next scanning.
This function judges a document skew based on the characters printed on the
ATTENTION
document. So it may not work properly for the following kinds of documents:
Documenst with many extremely large/small characters
Documents on which the pitches of lines or characters are extremely narrow,
or characters are overlapped
Documents with many charcters that contact underlines or borders
Documents with have many photographs or figures and only a few characters
Documents with a background pattern behind characters
Documents on which characters are printed in various directions (e.g. plans,
etc.)
Documents with only capital characters
Documents with handwritten characters
*When you scan such documents, unmark the checkbox.
3.5 Various settings according to your needs
3