Greetings,
OS upgrades can sometimes introduce abnormal or undesired behaviors for connected device that existed and worked previously. Also common when the previous drivers were intended for a previous operating system.
I suggest you un-install the printer and ALL of the drivers/software, restart, then reinstall using the Catalins specific drivers from the start.
https://www.usa.canon.com/internet/portal/us/home/support/details/printers/inkjet-multifunction/mx-s...
You'll need both CUPS and scanner or ICA driver for proper function under 10.15.x
~Rick
Bay Area - CA
~R5 C (1.0.6.1) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, +RF 1.4x TC, +Canon Control Ring, BG-R10
~DxO PhotoLab Elite ~DaVinci Resolve ~Windows11 Pro ~ImageClass MF644Cdw ~Pixel 8
~CarePaks Are Worth It
