Got it to work by installing "scangearmp-common-64_2.10-33~raring1_amd64.deb", and "scangearmp-mg3200series-64_2.10-33~raring1_amd64.deb" from https://launchpad.net/~michael-gruz/+archive/canon-trunk/+build/4323532 Then ran scangearmp in my terminal ...
Im on Linux Mint 16 64 bit, and i am having the same problem. The printer installed fine under the printer section. It works well when printing. It wont show up as a scanning device. I have tried using simple-scan, and xsane. Both programs will not r...