Comment 26 for bug 1577137

I'm also having the same or similar problem with my Epson WF-3520. Worked find at 15.10, nothing after 16.04 upgrade. I was a little confused about which set up some of the comments described here. Mine is a printer / scanner directly connected to the router and accessed wirelessly. So in theory needing to set up a backend is not required(?). I have also bugged this separately at #1613027. I've also tested a few mainline kernels to see where the problem starts (it appears to be all the 4.4... series). Reverting to an earlier kernel allows scanning to work which may be a temporary work-around.
In any case I've tried the solutions raised here, but did not succeed.

Tony