Fujitsu ScanSnap S1500M Operator's Manual page 187

Note that text recognition will be performed only on pages containing text which is not
yet recognized.
Saving to Google Docs starts. Click the [Close] button to close the [Scan to Google
Docs(TM)] dialog box when the saving is completed.
If you select the [Close this window when save completes] check box above, the
[Scan to Google Docs(TM)] dialog box will automatically close from next scanning on
when the saving is completed.
Google Docs does not start up after the saving has completed. To check the saved PDF
file, start a web browser and log in to Google Docs.
Actions (for Windows Users)
187