Hi Allan. Welcome to justanswer.
Turn off the printer. Remove the power cord for 1 minute. And then connect again and turn it on. Check now if it still prints blank documents.
Choose Secure Remote Assistance if you want me to solve the issue by accessing your system
Once you click this link below(CLICK HERE)A file will automatically get downloaded. Check your download section, a file named ELSINORE.SCREENCONNECT will be present. Just open that file so that I can connect to your computer.