Canon 2417B002, Руководство пользователя

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4-6
Chapter 4 Other Functions
IMPORTANT
• Ultrasonic double-feed detection works only when the
document pages overlap by at least two inches (50 mm).
• If documents stick together due to static electricity, Ultrasonic
Double-Feed Detection may not function correctly.
• If the presence of adhesive notes or labels on pages is
detected as a double feed and you do not want to remove
them for scanning, a non-detection zone can be specified in
the ISIS/TWAIN driver settings.
(See “Double Feed Detection”
on p. 8-18.)
Double-Feed Retry
When a double feed is detected with Ultrasonic double-
feed detection, this function transports the double fed
pages back to the feeder inlet and tries scanning again. You
can set this function from the User Mode.
(See “Double-
Feed Retry Setting” on p. 4-11.)
■
Skew Detection Function
If a long document page becomes skewed as it is fed, the
page may press against the edge of the feed inlet or
transport path and be damaged.
When the scanner detects that a skewed page is contacting
the edge of the transport path, an error message is
displayed and transport stops.
IMPORTANT
• A page that becomes skewed while it is fed is only detected by
the sensors as skewed if it contacts the edge of the transport
path during scanning.
• Note that the ISIS/TWAIN driver has a Deskew function that
can detect a skewed document from the scanned image, and
straighten it.
■
Staple Detection Function
When sensors at both sides of the feed inlet detect the bent
corner of a stapled document, an error message appears
and feeding stops.
IMPORTANT
• Staple detection detects the bent corner that occurs when one
of the four corners of a document has been stapled.
• Staple detection may not operate properly in the following
cases where bending does not occur in documents.
– The document is stapled at two or more corners.
– The document is size smaller than STMT/A5.
– The position of the left or right document guide has been
changed, and the document has been shifted to the left or
right side.
(See “Adjusting the Document Guides” on p. 3-9.)
• Be careful to keep the staple detection window glass clean,
and wipe the glass if dust is present.
Hint
• Staple detection is controlled in the ISIS/TWAIN driver, and
the detection level can be set in the User Mode. (See “Staple
Detection Level Setting” on p. 4-11.)
• Staple detection for the Count-Only mode can be set in the
User Mode. (See “Staple Detection Setting” on p. 4-11.)