White Level

When White Level is on, the first 3 mm of each document is analyzed and the background brightness level is adjusted so the background of the scanned document becomes white. White Level is set to “From White Stick” when Halftone (Dither) or Grayscale is enabled.

∙From White Stick—white level is set according to the white level calibration strip in the scanner (not the scanned document).

∙From Paper—white level is set from the first 3 mm of a scanned document.

∙Automatic—when Halftone (Dither) and Binary are set to “None,“ white level is set from a preset white color definition.

Original

From White Stick

From Paper

Automatic

If you scan colored paper (such as red or blue), the scanned paper’s background color may cause the noise level to increase.

NOTE: The document color 3 mm from the upper edge is detected. If a document contains colors that are different from the 3 mm sampled section color, this function may not work correctly.

A-63055 December 1999

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