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"Professional" Scan Preferences ("Image" Tab) (part 1)
Use this screen to adjust brightness, contrast and threshold settings.
B/W Threshold
Sets the threshold when you select "Mono 2
gradation" for "Colour Mode" on the "Main"
tab. Move the slide bar to the left or right to
decrease or increase the threshold, or input a
figure directly into the setting box (1 - 254).
The threshold setting is used to grade an
image containing many colours into black and
white. Increase the threshold and the areas
shown in black will increase. On the other
hand, decrease the threshold to increase
areas represented in white.
Specify the value for "B/W Threshold"
setting to let your OCR software read
text data clearly. The text data cannot
be recognised correctly when the data
includes blurred or faint characters.
Reverse
When using the "Mono Diffusion" or "Mono 2
gradation" colour mode setting, select this
function to convert black areas into white,
and white areas into black.
Document
Data after selecting the
"Reverse" setting.
This setting can only be used when
the "Colour Mode" is set to "Mono
Diffusion" or "Mono 2 gradation".
On the above screen, click on options shown in
the green boxes to make additional changes.
Scanning
Auto Contrast/Brightness Adjustment
By checking this function, the brightness and
contrast levels used for scanning are
automatically adjusted to the most
appropriate setting.
•
This setting is unavailable when the
"Colour Mode" is set to "Mono 2
gradation".
•
By displaying the variation preview
screen, this setting is automatically
turned off ( ).
"Auto Threshold" button
When using the "Mono 2 gradation" colour
mode to scan a document, click this button
and the threshold setting is automatically
adjusted to the most appropriate setting. The
"B/W Threshold" setting will also change
automatically after adjusting this preference.
Edge
Set the method for processing the edge of
scanned images.
Colour Matching
Use this option to specify the colour matching
method.
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