What is this "printer server" device here? Is there some additional device between the OpenVMS box and the LaserJet 4345mfp series printer? Maybe some sort of a host or controller that's processing and forwarding print jobs?

What happens if you start removing some pieces from this configuration, and (for instance) send the print job directly to the LaserJet MFP 4345 via, say, LPR/LPD queue?