Hello All, Some further testing, had access to a Windows Notebook, installed Canon LBP-5050N printer with USB then network connections and printed test page successfully each time, so know that cables and printer work, so back to permissions and the like with CUPS and the printer drivers, and possibly network protocols. The Windows test page does declare the data format as raw. I think there is a bit of software that will log file access. Then I can see what is called and invoked when I try to print. Then I can see what the permissions are, and a better idea of what to look for in the configurations. There were comments about Arch having a blog with useful comments. It specified commands for systemd components that I could not find under Debian. I would appreciate some pointers to stopping services, and restarting. There are files that if I am to edit, I need to stop CUPS for the duration, then restart to test. I also wish to file a form of bug report on CUPS in Debian, that I found it necessary to add myself to the appropriate groups to be able to add a printer. I would expect that the initial install where I set myself as administrator would do that. I can cope with the command line, when I have an idea of what is happening, but how about the Windows refugee who is refused access to installing any printer. We can help if they ask rather than going back to Microsoft, but they are all too likely to just reload Windows. Regards, Mark Trickett