Hi,
I have a Canon TS9000 series printer. Solus detects and can connect to my printer just fine. Printing isn't an issue, but the Simple Scan app doesn't detect my printer for scanning, so I think it may be a driver issue.
Canon has the source files for the printer on their site: https://www.usa.canon.com/internet/portal/us/home/support/details/printers/inkjet-multifunction/ts-series-inkjet/ts9020-white/pixma-ts9020?tab=drivers_downloads