Canon imageFORMULA DR-C225 マニュアル

Select the [Set Scanning Area] check box and then specify the area of the 
document to be scanned.

Also, if you scan the document when [Check the image of the first page] is 
selected, only one page of the document is scanned and the 
corresponding scanned image is displayed in the preview window.

###HOME > Chapter 8 Special Scanning > When you want to delete the 
images of the blank pages in two-sided documents###

Set the scanning side setting to [Skip Blank Page] on the [Basic] tab to 
delete the images of the blank pages in the document.

If [Skip Blank Page] is selected, the [Setting] button is enabled, and you 
can adjust the level for judging whether pages are blank.