Install brother MFC-J485DW full capability to Machine with brother MFC-295CN configured also?

You want skanpage installed. it does multi page scan and OCR, on Ubuntu a default installation with the requirements.

also you need airscan installed

sudo zypper in sane-airscan skanpage

for OCR install tesseract files.
you might want to use yast - software and search for sane and skanpage to find all options.

then to detect the scanner, deactivate the firewall, open skanpage and find the scanner.

then activate the firewall again.