Epson 30000 User Manual - Page 119

character recognition., OCR scanning produces poor

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Moiré (cross-hatch) patterns appear in the image when you perform halftone scanning. s Make the image size slightly smaller. s Use a transparent sheet between the document and the document table to defocus the image. s Reposition the document on the document table. Try positioning the document at a slight angle. s Make sure Unsharp Mask is deselected in the Destination window. s 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. s Make sure your printer is securely connected to your computer and that you're using the correct cable. s Make sure the correct printer is selected in your printer software. OCR scanning produces poor character recognition. s Make sure your document is properly aligned on the flatbed. s Adjust the Threshold setting in the Image Controls window. s Increase the resolution to 720 dpi. The image doesn't scan, or you can only scan a few dots. s Make sure the document is face down on the document table. s 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. s When a line of dots is missing from the scanned image on your screen, the scanner sensor has malfunctioned. Contact your dealer. s When a line of dots is missing from your printouts, your print head has malfunctioned. See your printer manual. Solving Problems 113

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Solving Problems
113
Moir
é
(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.