Fujitsu ScanSnap S1100 Operator's Manual page 315

When you perform a scan with [PDF(*.pdf)] selected for [File format] in the [File
option] tab of the ScanSnap setup window, a JPEG file is created from the PDF file.
A separate JPEG file is created for each page of the PDF file.
The following window is displayed when the JPEG file is being created.
Evernote for Mac starts up, and the JPEG file is saved to Evernote.
When you select [PDF (*.pdf)] for [File format] in the [File option] tab of the ScanSnap setup
window, a four-digit serial number is automatically added to the name of the file which is
saved to Evernote.
e.g. When the file name is [ScanSnap], the file is saved as:
ScanSnap_0001, ScanSnap_0002, ScanSnap_0003...
The file in which the scanned image is saved remains in the folder specified for [Image
saving folder] in the [Save] tab of the ScanSnap setup window even after the scanned
image is saved to Evernote. Delete this file if unnecessary.
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Actions (for Mac OS users)