Check document settings, print job configuration, toner/ink levels, printer driver, and memory issues. This usually indicates that the printer settings are configured to print in a different format than the actual document Since you've already ensured that the ink levels, printhead alignment, and drivers are fine, here are some additional steps you can try.
Canon PIXMA TR4722 All-in-One Wireless Printer for Home use, with Auto
Learn the possible causes and solutions for printer only printing half page vertically or horizontally on windows pc
Find out how to check printer configurations, page size, document size, and printer driver.
If your printer prints half page documents, follow these checks and fixes to get it printing full pages again.
