Canon S400 User Manual page 462

Parts of an Image Missing or Not Aligned Properly
Check 1
D
ID YOU PLACE AN IMAGE WITHIN THE PROPER SCANNING AREA
Check that the image you wish to scan is placed in the proper scanning
area.
Check 2
D
ID YOU SPECIFY THE SCANNING AREA CORRECTLY
If the Paper Size setting is smaller than the size of the image you scan,
parts of the image will be missing.
If you place the image outside the scanning area, parts of the image may
not be aligned properly. Always check that the image is set within the
proper scanning area.
Scanning Result Is Unsatisfactory
?
?
Scanner Problems 462