Regarding the PIXMA TS9100 (which appears to be an AirPrint device) and Debian 10, install sane-airscan from buster- backports and ipp-usb from
https://github.com/alexpevzner/sane-airscan#note2 (the main page} https://download.opensuse.org/repositories/home:/pzz/Debian_10/ (.deb packages) We would be really interested in what you get for scanimage -L and airscan-discover Regarding ScanGearMP2: See https://wiki.debian.org/Scanner#canon Cheers, Brian.
