Question: I have a Cannon MP560 that kept having communications errors. One of the suggestions I read was to remove the printer from the print & scan menu and re-add it. Once I did that the scanner disappeared as well and I cannot get OSX 10.7 to recognize this device as a scanner again. 

* Does anybody know how I can get OSX to recognize this device as a scanner again?

Here are some screenshots of my print & scan screen and my add printer dialogue. Bonjour does not show me any information about this device either. 

![enter image description here](https://i.stack.imgur.com/fX8Ad.png)

![enter image description here](https://i.stack.imgur.com/Jgfpy.png)

Answer: 
Have you tried deleting the .plists associated with the printer? These are all in my `~/Library/Preferences` list. I would move them to the desktop (just in case you want to move them back), restart your Mac, and try adding the printer again.
How to scan wirelessly: if anyone is still interested in using their MP560 scanner wirelessly on OSX Mavericks, I successfully used *Image Capture* from Applications.

Note the printer must be installed and recognized as a wireless printer - the MP560 will show up twice. Initially I had to install the MP560 via USB cable.