Epson Macintosh - Manual (Page 59)

After starting a multipage scan using the Automatic Document
Feeder, the image editing application freezes, displays an error
message, or fails.
Reset the system and reduce the number of pages you are
scanning with the Automatic Document Feeder.
After closing the EPSON TWAIN screen, a partial image of the
screen appears over the scanned image.
Scroll the application’s frame to clear the partial image.
After selecting a part of an image to scan, the image did not scan
correctly.
Scan the whole image instead of a portion of it.
Problems With Image Quality
This section tells you how to fix problems with image quality
that may occur when you scan or print images.
The entire image is distorted or blurred.
Make sure that the document is placed flat against the
document table.
You may have moved the document during scanning. Check
the position of the document.
See that the scanner is not tilted or placed on an unstable
surface.
Troubleshooting 6-7