Canon imageFORMULA DR-1210C User Manual page 74

Symptoms A black margin appears around the edges of the
scanned image.
Problem A document smaller than the preset paper size has been
scanned, or the document placed on the scanner was
placed crookedly.
Solution
Set [Paper Size] to [Auto-detection], or set [Border Removal] to
on. (See "Software Settings," on p. 49.)
Symptoms The scanned image is skewed.
Problem The document is being fed at an angle (skewed).
Solution Set [Deskew] to on. (See "Software Settings," on p. 49.)
Symptoms Lines, smudges, or dirt appear on the scanned image.
Problem The scanning glass or rollers inside the feeder are soiled.
Solution
Clean the scanning glass and rollers. (See "Regular
Maintenance," on p. 58.)
Scratches on the scanning glass can also cause lines or
smudges to appear on the scanned image. If this happens,
contact your local authorized Canon dealer or service
representative.
Symptoms The scanned image is abnormal for certain documents.
Problem Functions such as [Auto-detection], [Deskew], or [Border
Removal] were used when scanning documents containing
text or photos up to their edges. (The scanner cannot
accurately process the edges of documents.)
Solution Turn off functions such as [Auto-detection], [Deskew], or [Border
Removal] when scanning documents containing text or photos up
to their edges. (See "Software Settings," on p. 49.)
Symptoms The scanned image is abnormal in some applications.
Problem A function not supported by the application was used.
Solution
Some applications do not support functions such as auto-detection
of the paper size. Scanning documents with an application such as
this will result in an abnormal scanned image. Try scanning with
auto-detection of the paper size set to "off."
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Appendices