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ISIS configuration method
1
Select one of the following settings from the [White Level From Paper] list box
in the [Front and Back] section of the [Advanced Settings] dialog box.
Off:
The White Level From Paper function is set to off.
The scanner’s white reference is used.
On:
The White Level From Paper function is set to on. White is
used as the reference for the document’s background color.
Automatic: When None has been selected as the Halftone (dither) setting
in the Black and White mode, the White Level From Paper
function is set to on.