When You Want To Enhance The Color Red - Canon imageFORMULA DR-C225 II User Manual

Click [Image processing] and specify the color (red, blue, or green) to be
ignored (dropped out) in the dialog box that appears, and that color will not
be scanned.

When you want to enhance the color red

Specify [Red Enhance] for [Color drop-out] on the [Image processing] tab
to enhance the color red in the document.
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