My tinkerTable works as a document management system... kind of.
That's why there's a button which starts the scanner and saves the scan to dropbox.
Here's what you need for the scanning part:
make sure your scanner is supported:
sudo apt-get update
sudo apt-get install sane
allow user to scan:
usermod -a pi -G scanner
this didn't work with the raspberry pi model b, but scanning worked anyhow.
this didn't work, but I got a result using
scanimage > test.ppm
imagemagic is needed to convert images:
sudo apt-get install imagemagick
I've found lot's of help here: