Epson GT-30000 User Manual

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.

Epson GT-30000 Specifications

Power

voltage	AC 100V-120V, 220V-240V
frequency	50-60Hz
power consumption operating without ADF	65W
power consumption operating with ADF	90W
power consumption standby without optional unit	12W

Operating Environment

temperature operating	41ºF to 95ºF (5ºC to 35ºC)
humidity operating	10% to 80% (no condensation)
humidity storage	10% to 85% (no condensation)

Scanning Specifications

optical resolution	600 x 1200 dpi with Micro Step Drive™ technology
maximum resolution	9600 x 9600 dpi with interpolation
effective pixels	7020 x 10200 pixels (600 dpi)
color depth internal	36 bits per pixel
color depth external	24 bits per pixel (selectable)
grayscale depth internal/external	12 bits per pixel
grayscale depth external	8 bits per pixel
scanning speed at 1600 dpi, draft mode, color	0.79 msec/line (approx.)
scanning speed at 1600 dpi, draft mode, grayscale	0.39 msec/line (approx.)
scanning speed at 1600 dpi, draft mode, art	0.39 msec/line (approx.)

Weight and Dimensions

maximum read area	11.7" x 17.0" (297mm x 432mm)
width	25.9" (658mm)
depth	19.2" (488mm)
height	10.0" (254mm)
weight	66 lb (37.5 kg approx.)