If a Perl script wishes to interact with a printer on the network (hence Net::Printer) that speaks the Unix standard 'lpd' protocols, this is the module it would use. It's equivalent to some module that would let you use a network or locally installed printer under Windows.

Again, this is all local to where the script is being run. If the user/system that the script resides has no means to print to an arbitrary printer, a Perl script using this or any other module isn't going to be able to either. This has nothing to do with stuff on the client side.