If only half the page is printing out, many things could be wrong. Unplug the printer, turn off the computer and restart both devices. Once everything is back up and running again, run a self-test page. If the self-test page doesn’t print normally, there may be additional error lights on the printer. You can search the web for what the lights mean and go from there. The problem could be concerning the printer or the toner or drum unit. The error message should explain what the problem is, but if it doesn’t you can always search for the error message online to get an in-depth explanation. Contact us at Epson Printer Support UK, if you are not fixing this issue.