Scanned Image; Moiré (Cross-Hatch) Patterns Appear In The Scanned Image - Epson PERFECTION 1640 SU Reference Manual

❏ Change the Destination setting. Select Screen/Web as the
"Destination" on page 3-14. Selecting a printer may cause on-
screen colors to be different from the colors of the original,
however colors will be reproduced correctly when it is
printed.
You cannot scan an image or you only get a few
dots for the scanned image.
❏ Make sure a document is placed on the document table of the
scanner.
❏ Change the Threshold setting in the Image Control dialog box.
When Text (Background Removal) is selected as the Image
Type, change Text Enhancement Technology to None
from the B/W Option in the Image Type dialog box. Then
change the Threshold setting in the Image Controls dialog
box. Or change Text (Background Removal) to Text/Line
Art, then change the Threshold setting in the Image Control
dialog box. See "Image Controls" on page 3-20.
Moiré (cross-hatch) patterns appear in the

scanned image

❏ Make sure Image Type is set to Color Document or Black &
White Document in the Manual mode window.
❏ Change the Image Type settings. Turn the De-screening
setting On in the Image Type dialog box.
❏ Place a transparent sheet such as an overhead projector sheet,
between the document and the document table.
❏ Reposition the document slightly.
❏ Make the image size slightly smaller.
Maintenance and Troubleshooting
6-25