Fujitsu 8.4 Manuel D’Utilisation

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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.