Epson ES-1200C - Manual (Page 51)

Part of the image is distorted or blurred.
Part of the document may be wrinkled, warped, or not in
contact with the document table (the glass area). 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 document is very thick or warped at the edges, the edges
of the image may be colored. Cover the edges of the document
with opaque paper to avoid having outside light interfere.
If part of the document 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 document.
3-6 Troubleshooting