Fujitsu ScanSnap S1500M Operator's Manual page 228

2.
Click the [Option] button in the [Scanning] tab.
The [Scanning mode option] dialog box appears.
3.
Select the [Allow automatic image rotation] check box.
4.
Click the [OK] button to close all open dialog boxes.
5.
Load a document in the ScanSnap.
For details about how to load documents, refer to
6.
Press the [Scan] button on the ScanSnap to start scan.
The scanned image is saved in correct orientation.
Using the ScanSnap in Various Ways (for Windows Users)
228
"How to Load Documents" (page 32).