Canon imageCLASS MF3010 - Page 149

Threshold
You can adjust the threshold setting. By adjusting the threshold, you can sharpen text within the document and
r
educe print-through that often happens to newspapers.
NOTE
Threshold
The brightness of color and gr
ay images can be specied as a value from 0 up to 255, while the
brightness of black and white images is expressed in black and white including all shades between black
and white. A threshold is the boundary to dene whether images are black or white.
[Threshold Level]
Adjust the threshold level by moving [
] on the slider or manually entering a value from 0
up to 255.
[Reset] Restore all current settings to default settings.
Tone curve/threshold drop-down list
Y
ou can save the color settings specied for scan areas. If there are no specic scan areas, the settings specied
for the entire image displayed in the preview area are saved. You can also recall the saved settings to apply to
the selected scan area.
[Custom]
You can custom-dene each setting. The settings can be modied after these settings wer
e
applied to the image.
[Add/Delete]
Display the [Add/Delete Threshold Settings] dialog box when [Black and White] is selected
for [Color Mode] in the [Add/Delete Tone Curve Settings] dialog box. You can register the
current settings set for the image in the preview area under a specied name.
Preferences
The [Preferences] dialog box appears when [Preferences] is clicked in the [Advanced Mode] tab. You can change
the scan and preview settings within this dialog box.
Scan
144