Epson Macintosh - Manual (Page 60)

Part of the image is distorted or blurred.
Part of the original may be wrinkled, warped, or not in contact
with the document table. Be sure the document is uniformly
flat.
Caution:
Do not place heavy objects on the document table.
The edges of the document are not scanned.
The document table has non-readable areas around the edges.
Adjust your document’s position so that the image comes
inside the readable area.
Color is patchy or distorted at the edges of the document.
If the original is very thick
or warped at the edges, the edges of
the image may be discolored. Cover the edges of the original
with opaque paper to avoid having outside fight interfere.
If part of the original is outside the document table, the edge
may not be in contact with the document table and may be
discolored. Change the position of the original.
The image is faint or out of focus.
Make sure the document is placed flat on the document table.
Check your Gamma Correction setting.
Make the Brightness setting darker.
Make sure you have calibrated your monitor and printer to
your scanner, and that you are using the resulting calibration
profile. See Chapter 2 for more information
6-8 Troubleshooting