This is the instruction to share a printer which is served by a Linux running CUPS server to Windows clients.
Assume the class name of the printer (as defined in CUPS) is HP_LaserJet_1020, and the Linux server's IP address is 192.168.0.11.
Add a network printer and in URI box, add: http://%3cip-address/ of cups server>/classes/<classname>
or, in this example:
http://192.168.0.11/classes/HP_LaserJet_1020