Canon MX720 series Online Manual page 23

When Long edge is Selected for Binding Side in Document Scan Orientation
Settings...
Place the documents after rotating the output documents 180 degrees.
When Short edge is Selected for Binding Side in Document Scan Orientation
Settings...
Place the documents without changing the orientation of the output documents.
9. Click OK.
Scanning starts.
Note
Click Cancel to cancel the scan.
Scanned images are saved in the folder set for Save in in the corresponding Settings dialog box
displayed by clicking Settings.... In each Settings dialog box, you can also make advanced scan
settings.