We use a Canon at work, behind a print server called UniPrint, or some shit. I figured out how to use it to print from a USB drive long before I finally caved and mailed the guy who maintains it to ask how to get my KDE Neom machine to successfully send a print job. I figured out how to see it, I could check the toner levels, but I could not send a print.

Works now, because he changed a setting.

Bastard printers.