Epson Expression 1680 - Manual (Page 44)

2-24 Understanding EPSON TWAIN Pro Features
Other menu
Click the Other tab to display the Other menu.
Save Preview Image and Settings
When this check box is selected, the image that was shown in the
Preview window the last time EPSON TWAIN Pro was used will
appear with its associated settings the next time you start EPSON
TWAIN Pro. This feature is useful when scanning the same
document more than once, and is especially useful when using
different TWAIN-compliant applications to scan the same
document.
Note:
When this check box is selected, the document shown in the Preview
window when EPSON TWAIN Pro starts may be different than the
document currently on the document table. Before scanning, make sure
the correct document is set on the scanner.