[Unsolvable] - Brother MFC-7220; Printer works, Scanner Doesn't.

[rocky7x]

Have you tried the scanner driver and scanning utility directly from the manufacturer at this site?

http://support.brother.com/g/b/downloadt...7220_us_as

When you select Linux and deb package format, it will give you drivers for both printer and scanner specifically for your device. It should work. If not, I would ask for support directly from Brother support.