A-61660 July 2013 5-3
• User Shading — provides adjustments to improve image quality.
Shading adjustment should be performed when the density of the
scanned images is uneven and the image displays perpendicular
lines, when colors in some parts of the scanned image are extremely
different from what is expected, or when the image quality fails to be
improved after cleaning the scanner.
Before performing shading adjustment, thoroughly clean the drive
rollers, background bars and ADF glass areas. Only use shading
paper that is supplied with the scanner and is in good condition.
1. Click User Shading on the User Utility.
2. Click Start Shading. The User Shading utility will guide you
through the necessary steps.
3. Clean the inside of the scanner. See the section entitled,
“Cleaning inside the scanner” in Chapter 6. When finished, click
OK.
4. Turn over the upper and lower background bars to white. See the
section entitled, “Changing the background bars” in Chapter 3.
When finished, click OK.
5. Place the shading paper in the feeder tray in the Landscape
position, then click OK. The scanner reads the shading paper and
the shading adjustment sets the background bars for the white
shading. Wait until the message Now Adjusting is cleared from
the screen.
6. Turn the upper and lower background bars over to the black side.
When finished, click OK.
NOTE: The shading paper is NOT used for the black
background bars.
The shading adjustment data with the black background bar is
created. Wait until the message Now Adjusting is cleared from
the screen.
7. Click OK to complete shading adjustment.
NOTE: If the scanned images are still lined after the shading
adjustment and these lines are not eliminated even after
the ADF glass areas have been cleaned, the shading has
not been compensated properly. Clean the parts again and
perform the shading adjustment procedure again.
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