FUJITSU fi-4530C - Manual (Page 28)

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End of Page Detection
Scans the edge (bottom) of the documents and outputs data adjusted to the document
length. When any page shorter than specified "Paper Size" is included, the output size
is adjusted to the detected short size.
Overscan
This option specifies the overscan function. This function makes the scanned images
larger than the original documents by adding margins.
Gamma
Specifies Gamma correction. Correction patterns are: "Normal", "Soft", "Sharp",
"Custom", or "Download".
DTC Variance
This option specifies the value for adjusting the variance based on the brightness of the
image.
Edge Processing
This option specifies the sharpness of contour extraction.
Dropout Color
This option excludes selected color (the three primary colors of light i.e. green, red,
blue) from scanned images. For example, if the document contains black text in a red
frame and when the red color is selected, the scanner reads only the text and eliminate
(drop out) the red frame.
Reverse
Colors of scanned images are reversed.
Low, Mid, High Emphasizes contour of images. Available settings
are: Low, Mid, High
Smoothing Smoothes jaggy images.