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A-63055 December 1999 47
Brightness
The Brightness option allows you to adjust the image brightness,
making it lighter or darker.
Adjust the brightness setting by dragging the Brightness sliding bar in
the Front Side Settings or Back Side Settings group box. Select a
value from 1-255. The default is 128. The smaller the number, the
darker the image. Or you can type a value (1-255) in the Brightness
text box. Scan the document to check the brightness.
Brightness 51 Brightness 128 Brightness 205
A darker setting is recommended for blurred character documents.
With a brighter setting, background noise in a color document
disappears.
NOTE: Refer to the section entitled “Automatic Threshold” for
information about setting automatic brightness by
Binary mode.