The Scan dialog has three main sections: the Settings tab, the Adjustments tab, and the Preview area.
From here
Settings tab
Go to
Scan Settings
Reduce Background Noise
To
Select a preset scan setting according to the color and document type of your scan.
Note: Select Custom Settings to customize the scan setting manually instead of using a preset scan setting.
Remove smudges and light background shading in color documents.
Scanning
38