12.11 Shading Adjustment
When shading adjustment is required
•
Perform shading adjustment when the density and brightness of sections of scanned images are
considerably uneven, or when image quality does not improve after cleaning the inside of the scanner.
Before proceeding with shading adjustment
•
Before beginning shading adjustment, thoroughly clean the scanning glasses, conveyors in the scanning
area (page 95), and all rollers (page 98).
If you perform shading adjustment while these parts are dirty, lines will appear on scanned images.
•
Shading adjustment procedure
1.
Start User Utility.
2.
Click [User Shading...] on the main menu, follow the instructions on the image display.
•
For further details, refer to section "[User Shading]" in the help for User Utility.
•
When performing shading adjustment, the shading paper must be placed in landscape orientation on
the feed tray. After setting the document guides to positions and , press near the bases of the
document guides (indicated by the arrows) to open them further until they stop (at positions and
). After you set the shading paper, adjust the positions of the document guides to match the size of
the shading paper.
1
2
3
4
Notice
•
If the shading adjustment has not been performed properly, then lines might appear on scanned
images even after adjusting the shading. Also, lines might not be eliminated even after cleaning the
conveyors, scanning glasses and the white reference area on the scanning background rollers. Clean
the parts, and then adjust the shading again.
12.11 Shading Adjustment
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