With Ubuntu 17.04 network-printer support for Samsung CLX-3185FN multi-functional-device works out of the box, except its  scanner is not discovered by tools like Simple-Scan.

To get the scanner discovery working, install the driver from “Samsung Unified Linux Driver Repository” (SULDR) http://www.bchemnet.com/suldr/

Configure package source as documented at: http://www.bchemnet.com/suldr/

Finally install the driver package suld-driver2-1.00.36.

Afterwards starting the GUI tool “Simple Scan” the scanner-device should be discovered in the network.