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Shading Adjustment
About shading adjustment
The shading adjustment function corrects variations in the lamp intensity and pixel sensor sensitivity, and
reduces unevenness in density in scanned images. It can be carried out by means of the User Utility using the
special shading paper, which is provided with this scanner.
When shading adjustment is required
Perform shading adjustment when the density and brightness of sections of scanned images is considerably
uneven, or when image quality does not improve after cleaning the inside of the scanner.
Before proceeding with the shading adjustment
Before beginning shading adjustment, thoroughly clean the image sensor cover (F), image sensor cover (B),
conveyors in the scanning area, and all rollers.
If you perform shading adjustment while these parts are dirty, lines will appear on scanned images.
Shading adjustment procedure
1. Start the User Utility.
2. Click "User Shading" on the main menu, and operate as the image display dictates.
Note
• For further details, refer to section "4.6 [User Shading]" in the User Utility Reference Manual.
Notice
If lines still appear on the scanned images after performing the shading adjustment, and if these lines are
not eliminated even after the image sensor cover areas have been cleaned, it means that the shading has
not been compensated properly. Clean the parts again, and then proceed with the shading adjustment.
80 Operating Manual
Appendix