There are notebooks where you can turn the screen and fold down so you have a tablet. Touchscreen etc. Scanning can be done with a hand scanner, or transfer from a printer/scanner, wireless if you like.
I have a Samsung Galaxy Tab and can read Word docs on there. Can also access Internet, listen to music and read books. Everything on your list plus I have put films on too.
It also has a good camera for stills and video.
Hope this helps.