Canon imageFORMULA DR-S150 User Manual page 70

When you want to remove dots and notches that appear
in documents
You can remove dots and notches protruding from object outlines that
appear in documents from scanned images.
• Select the [Erase Dot] check box to automatically remove isolated
black dots (3 x 3 dot size) from white backgrounds (or white dots
from black backgrounds).
• Select the [Erase Notch] check box to remove notches that protrude
from object outlines in scanned images.
When you want to save a scanner driver setting
When you finish configuring a setting, click the [Save] button of [User
Preference] to save the setting.
The saved setting is registered to the list. You can delete a setting
from the list with the [Delete] button, and save or load a configuration
file with the [Back Up] or [Restore] button.
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