User’s Manual4-254.4 The Color Dropout Tab4.4.1 Color Dropout SelectionColor Dropout tab allows you to drop either of the red, blue, orgreen color in your scanned image. If your image contains redcolor watermark or background, choose the R (Red) channelthen any red watermark or background will be removed. Thisfeature is used to sharpen your text when using OCR (OpticalCharacter Recognition) software.The “Custom” option allows you to specify your desired color tobe removed by entering its RGB (Red, Green, and Blue) valuerespectively.Tolerance: Specify the allowable color range to be removed forthe color you selected. Specified range: 1 ~ 100The large the numeric value, the wider the color dropout rangeis.Note that this function supports only black & white and grayimages. Therefore, be sure to choose any black & white orgray image type while applying this function.
