Canon imageFORMULA DR-6030C User Manual page 36

When you do not want to scan colored lines and text
Select the color (red, blue, or green) to be ignored (dropped out) in
[Color drop-out] on the [Image processing] tab sheet, and that color
will be not be scanned.
When you want to enhance a particular color
Select the color (red, blue, or green) to be enhanced in [Color drop-
out] on the [Image processing] tab sheet, and that color will be
enhanced.
When you want to skip or enhance intermediate colors
Select an intermediate color in [Color drop-out] on the [Image
processing] tab sheet.
Click the [Setting] button to display the Color Settings dialog box, and
then you can specify the color range of the intermediate colors to
ignore (drop out) or enhance.
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