old printer, up to date MacOS 2021
My Mac is on Big Sur and my printer is no longer supported by Canon. It is MG4150. It was working fine two weeks ago. Now my pdf's are coming out either dropped down 20% so that the bottom gets cut off, or blank for the top 20% and the rest of the print correctly positioned on the page.
I've restarted the computer. I've turned the printer off and back on. I've deselected each of the printer options: Bonjour; Canon IJ Network; or USB Multifunction and tried them all again. Still, I cannot get a full page to print. What else can I try?
Mac mini, macOS 11.2