Canon imageFORMULA DR-2580C Compact Color Scanner User Manual - Page 95

Scanning Results Are Not as Expected, Set [Paper size] to [Auto-detection]. Or

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Chapter 3 Scanning Results Are Not as Expected If there is a problem with the scanning result (e.g., the scanned image is not clear, or the image is striped or dirty), the probable causes are incorrect ISIS/ TWAIN driver settings or a problem with the scanning unit inside the scanner. Scanning results can also become skewed if the ISIS/TWAIN driver has not been installed correctly, or the application in use does not support ISIS/ TWAIN driver functions. Symptoms The scanned image is too dark (or faint). Problem The [Brightness] setting is not set to an appropriate value. Solution If the image is dark, set a higher [Brightness] setting, or if the image is faint, set a lower [Brightness] setting. (See "Software Settings," on p. 61.) Symptoms Text or images on the rear side of your document appear in the scanned image. Problem The [Brightness] setting is too low, or the paper is too thin. Solution Set a higher [Brightness] setting. If the paper is too thin, make a copy of the documents and then scan the copy. Symptoms Double-sided scanning is not possible. Problem [Scanning Side] is set to [Simplex]. Solution Set [Scanning Side] to [Double-sided]. Symptoms A black margin appears around the scanned document. Problem Solution A document smaller than the preset paper size has been scanned. Or, the loaded document has shifted out of position. Set [Paper size] to [Auto-detection]. Or, set [Border Removal] to on. Symptoms The scanned image is skewed. Problem The document has been fed at an angle. (skew) Solution Use the document guide adapter to prevent document skew, and set [Deskew] to on. (See "Software Settings," on p. 61.) Appendices 91

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Appendices
91
Chapter 3
Scanning Results Are Not as Expected
If there is a problem with the scanning result (e.g., the scanned image is not
clear, or the image is striped or dirty), the probable causes are incorrect ISIS/
TWAIN driver settings or a problem with the scanning unit inside the scanner.
Scanning results can also become skewed if the ISIS/TWAIN driver has not
been installed correctly, or the application in use does not support ISIS/
TWAIN driver functions.
Symptoms
The scanned image is too dark (or faint).
Problem
The [Brightness] setting is not set to an appropriate value.
Solution
If the image is dark, set a higher [Brightness] setting, or if the
image is faint, set a lower [Brightness] setting.
(See “Software Settings,” on p. 61.)
Symptoms
Text or images on the rear side of your document
appear in the scanned image.
Problem
The [Brightness] setting is too low, or the paper is too thin.
Solution
Set a higher [Brightness] setting. If the paper is too thin, make a
copy of the documents and then scan the copy.
Symptoms
Double-sided scanning is not possible.
Problem
[Scanning Side] is set to [Simplex].
Solution
Set [Scanning Side] to [Double-sided].
Symptoms
A black margin appears around the scanned document.
Problem
A document smaller than the preset paper size has been
scanned. Or, the loaded document has shifted out of
position.
Solution
Set [Paper size] to [Auto-detection]. Or, set [Border Removal] to
on.
Symptoms
The scanned image is skewed.
Problem
The document has been fed at an angle. (skew)
Solution
Use the document guide adapter to prevent document skew, and
set [Deskew] to on. (See “Software Settings,” on p. 61.)