Fujitsu ScanSnap S1500M Operator's Manual page 353

If you select the [Convert to Searchable PDF] checkbox in the [Scan to Google
Docs(TM) - Options] window in step 3., text recognition is performed according to the
[OCR options] settings in the [Scan to Google Docs(TM) - Options] window.
The following window appears during text recognition.
Text recognition will be performed if there are any pages containing text which is not
yet recognized. Note that text recognition will be performed on all pages, including
pages containing text on which text recognition has already been performed.
Saving to Google Docs starts. Click the [Close] button to close the [Scan to Google
Docs(TM)] window when the saving is completed.
If you select the [Close this window when save completes] checkbox above, the
[Scan to Google Docs(TM)] window 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.
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