Epson Macintosh - Manual (Page 37)

Scanning the
Image
When you are finished selecting settings on either the easy or
advanced screen, and the image you are scanning looks just
right in the advanced preview window, you can scan the image
by choosing the Scan button.
If you choose Scan from the easy screen, TWAIN
automatically selects the entire image and scans it.
If you are scanning from the advanced screen and have not
previewed the image or selected a preview area for it, be sure
to click the Auto Locate icon before choosing Scan. Otherwise,
the entire document table is scanned.
When you close the TWAIN screen, you can further modify
your image using the features of your image editing software.
3-16 Capturing Images
From Within Applications