IBM Ricoh ImageReader FB735 - Manual (Page 29)

4.-7
Auto Level
Auto Area
Descreen
Color Match
Reset
Image Information
Auto Level: Optimizes the output quality of the scanned image.
Auto Area: Automatically sets the whole document as the scan
area, no matter what its size.
Descreen: Eliminates the Moire patterns commonly found in
printed matter (refer to figure 4-4)