This is the scenario: the network printer (a Samsung CLP-510N) is connected to the WiFi router with IP 192.168.1.200
https://help.ubuntu.com/8.04/printing/C/printing.html#network
a. Choose System → Administration → Printing
b. Now choose New Printer
c. Select the protocol your printer uses to communicate: "LDP/LDR Host or Printer",
Host: the printer's IP address (in my case 192.168.1.200), Queue: blank, Click Forward
Select Make and Model
Choose a unique printer name and (optional) a description and location and click apply
In the printer configuration the network printer is now listed,
with the description, location (both the optional values), and the Device URI which in my case is "lpd://192.168.1.200"
Print the test page - and that was it!
