Hello! My name is ***** ***** I will be assisting you with your scanning issue.
Usually there are 2 reasons and 2 resolutions to this problem:
Deskew would be setting your cropping to ON. I apologize. I stepped away for a moment.
Ok. And you've adjusted the guides?
Hmm. Give me just a moment.
I am going to open this up to another expert that might have more insight. This will be at no extra charge to you. Stand by for just a moment.
try installing the naps2 scanner software
then use the naps2 to scan
that will also produce a pdf document and it might do a better job of it.