Hi Karsten,
As List & Label runs on the server side only, it has no access to the printer on the client. That said, you may of course export to e.g. PDF and then print this using the usual button click on the printer icon. If you’re looking for an automated way and an installation on the client is feasible, you could think of deploying an app on the client that would register for a custom protocol, download a preview file and print this.
Would that be a way to go?