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This parameter can be set if "Halftone" or "Automatic Separation" is selected for "Image
Mode."
♦ Threshold:
Sets the threshold value by which the black and the white of black-and-white images are
distinguished. Specify a number in the range of 1 (bright) to 255 (dark). This parameter
can be set only if "Black & White" is specified for "Image Mode."
In addition, if "Auto Binary" is selected, the scanner will automatically use the
appropriate threshold value. As a result, the set value cannot be changed.
In addition, if "Auto Binary" is selected, the scanner will automatically use the
appropriate threshold value. As a result, the set value cannot be changed.
If the light color in the scanned document is read as white, increase the threshold value.
To eliminate light- colored areas in the scanned document, decrease this value.