So I have finally gotten round to trying to get the printer set up using the IP address.

Thanks for all your time and effort - it is much appreciated. When I added the printer using the Printer Setup Utility, I added it using the Default Browser option to add a printer as opposed to using the IP Printer.

I'm not sure about the last part of your reply. The printer is connected to the network by RJ45 from, presumably, the ethernet card to the wifi router. I Started backend /usr/libexec/cups/backend/mdns (PID 313) for job 334. I Started filter /Library/Printers/KONICAMINOLTA/filter/pstokmc252 (PID 312) for job 334. I Started filter /usr/libexec/cups/filter/pstops (PID 311) for job 334. I Started filter /usr/libexec/cups/filter/cgpdftops (PID 310) for job 334. I Adding end banner page 'none' to job 334. I Adding start banner page 'none' to job 334. If you are unsure what queue name is required, you could create the printer queue again but this time using HP JetDirect Socket (aka Port 9100) as the protocol. Without the correct queue name, the print job can leave the Mac but never find the correct port on the printer. For a number of printers, when you connect to the printer via LPR, you have to enter a valid queue name. If the printer log doesn't show your print job being blocked, then it may be a problem with the queue name. With our Canon driver, there is an item called Special Features and within that menu is Job Accounting, which is where the ID and password can be entered. If this is the case, then I would expect there to be a sub-menu within the driver to input a valid account ID. If there is some type of controlled printer usage (our Canon's have a similar thing called Job Accounting) then the job would show in the log but have some sort of error code to indicate it was not printed using a valid account. First of all, if the job appears to leave the Mac but not print, I would check the logs on the printer.

Konica minolta wireless setup utility