Epson GT-30000 - Manual (Page 119)

Solving Problems
113
Moiré (cross-hatch) patterns
appear in the image when you
perform halftone scanning.
■ Make the image size slightly
smaller.
■ Use a transparent sheet between
the document and the
document table to defocus the
image.
■ Reposition the document on the
document table. Try
positioning the document at a
slight angle.
■ Make sure Unsharp Mask is
deselected in the Destination
window.
■ Select 24-bit Color
De-screening as your Image
Type , or select On for
De-screening in the Image
Type window.
You can’t print scanned images,
or the printed image looks
garbled.
■ Make sure your printer is
securely connected to your
computer and that you’re using
the correct cable.
■ Make sure the correct printer is
selected in your printer
software.
OCR scanning produces poor
character recognition.
■ Make sure your document is
properly aligned on the flatbed.
■ Adjust the Threshold setting in
the Image Controls window.
■ Increase the resolution to 720
dpi.
The image doesn’t scan, or you
can only scan a few dots.
■ Make sure the document is face
down on the document table.
■ If you’re using an automatic
document feeder, make sure the
original document is inserted
face up.
A line of dots is always missing
from the image.
■ When a line of dots is missing
from the scanned image on your
screen, the scanner sensor has
malfunctioned. Contact your
dealer.
■ When a line of dots is missing
from your printouts, your print
head has malfunctioned. See
your printer manual.