Canon imageFORMULA DR-X10C User Manual page 135

Page Size
Select the page size that matches the document to be scanned.
If [Match original size] is selected, the edges of the document are
detected and images that match the size of the document are saved.
Dots per inch
Select the scanning resolution.
Higher resolutions provide clearer images but result in larger file sizes
and slower scanning.
Scanning Side
Select which of the sides of the document to scan.
If the scanning side is set to [Skip blank page], the images of blank
pages are deleted when images are saved.
Scanning Documents of Unregistered
Page Sizes
You can register an unregistered paper of non-standard size with a
name, as a custom paper size.
Click the [Save] button of [Page Size] in the [Basic] tab, to display the
[Custom Page Size] dialog box.
Register the paper of non-standard size.
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