I was enabling EPSON inkjet Stylus SX218 printer/scanner on Ubuntu 11.04. It requires two specific drivers (for printer and scanner respectively) which can be downloaded from EPSON website.
For the printer, one can use ubuntu recommended driver. It will pop up Update Manager once connected to the printer with USB.
For the scanner, one need to go the EPSON website, search for the right product, and install
iscan-data (to which
iscan depends on) first, then install
For me, I chose (visit link and search SX218)
iscan_2.29.1-5~usb0.1.ltdl3_amd64.deb(for 64bits < 12.04)
iscan_2.29.1-5~usb0.1.ltdl7_amd64.deb(for 64bits >= 12.04)