NPrinting can (and often is) installed on the same server as QlikView Server.
You should have a dedicated NPrinting user with admin rights on the machine.
There's a setup and install guide here:
Would you mind confirming, when you have NPrinting Server & Publisher on the same server, you need to simply point the "Source" settings in NSQ files to the "SourceDocuments" of which the QVWs residing within the same server, right? (As opposed to the Access Points folder within QV Server?)
If the above is correct, then likewise, if I have NPrinting Server installed on QV Server (Machine A), and Publisher on a different Server (Machine B) per Aran's suggestion, then my NSQ files which are sitting on Machine A, need to be pointed to the QVWs within "SourceDocuments" folder in the Machine B (using UNC Path).
Thank you for your input (or anyone else who could help confirming the above 2 scenarios),