Microtek ArtixScan M1 Pro User Manual page 24

1. Place the image to be corrected on your scanner.
2. Go to the Preview window and click the Scan
Material icon. From the submenu that appears,
choose Reflective.
3. Click the Overview button to start an overview, and
you will see the image appear in your Preview
window.
4. Select the Scan Frame tool from the Toolbar in the
Preview window, and choose the area to be scanned
by dragging a rectangle around it. You will see a
flashing frame (marquee) around the selected area.
5. Move the pointer to the menu next to the Descreen
tool in the Settings window. From the drop-down
menu that appears, select your source material --
whether the image being scanned is from a
newspaper, magazine, or art magazine (higher-quality
printing).
: If you know the printed lpi (lines per inch) for
the image, you may enter the exact number. You can
measure the line screen by using a screen finder,
which can be purchased from your local print shop.
6. Click the Scan button. When the image is scanned, no
moiré patterns will be evident. Compare the
"descreened" image to simply scanning the image
with the Descreen selection set to "None", and you
will see the difference in the image.
The Descreen tool is used to remove "screens" or moiré patterns from appearing in images. Moirés are
interference patterns that show up on your scanned images when you use previously printed matter,
such as magazines and newspapers, as your source material (instead of using an original color photo or
print). In moiré images, you will see these patterns emerge as a series of crosshatches or screens
crisscrossing the image.
In the example here, an image was scanned from a magazine, resulting in an undesirable moiré pattern.
The solution: rescan the image, with the Descreen tool "On" to eliminate potential moirés from
appearing in the resulting image.
Go to the Settings window, and enter
the desired output dimensions (width
and height) in the output dimension
edit boxes. The scan frame may
change slightly, and you may want to
go back to the Preview window to
move the scan frame and enclose the
area you want.
Go to the Preview window, highlight
the scan job you wish to see in detail,
and click the Prescan button. Then
switch to the Prescan view in the
View menu.