Canon DR-4010C Reference Guide - Page 52

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

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✘ 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 Problem Solution The scanned image is too dark (or faint.) The [Brightness] setting is not set to an appropriate value. If the image is dark, set a higher [Brightness] setting, or if the image is faint, set a lower [Brightness] setting. Symptoms Problem Solution Text or images on the rear side of your document appear in the scanned image. The [Brightness] setting is too low, or the paper is too thin. Set a higher [Brightness] setting. If the paper is too thin, make a copy of the documents and then scan the copy. Alternatively, enable the [Prevent bleed through/remove background] setting. Symptoms Problem Solution Double-sided scanning is not possible. "Scanning Side" is set to [Simplex]. Set "Scanning Side" to [Duplex]. Symptoms Problem Solution A black margin appears around the scanned document. A document smaller than the preset paper size has been scanned. Or, the loaded document has shifted out of position. Set [Page size] to [Auto-detection]. Or, set [Border Removal] to on. Symptoms Problem Solution The scanned image is skewed. The document has been fed at an angle. (skew) Use the document guide adapter to prevent document skew, and set [Deskew] to on. 48 Troubleshooting

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48
Troubleshooting
✘
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.
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.
Alternatively, enable the [Prevent bleed through/remove
background] setting.
Symptoms
Double-sided scanning is not possible.
Problem
“Scanning Side” is set to [Simplex].
Solution
Set “Scanning Side” to [Duplex].
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 [Page 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.