Unable to uninstall Canon IJ Network Scanner Selector

Open System Preferences > Users & Groups. Select your account and then the Login Items button. In this list will be Canon IJ Network. Select it and then press the minus button. This will stop the utility from starting when you log in. Then logout and log back in. The icon should not appear in the menubar as you have shown.

Did you try following the instructions by Canon to uninstall?

https://support.usa.canon.com/kb/index?page=content&id=ART137457

That will prevent the program from starting. However, to remove it completely, you can follow the following procedures:

make sure the program is removed from the application folder first.

Open the Terminal. Type in the following commands:

cd /Library/Printers

ls

Then you will see the file "InstalledPrinters.plist" and the folder "CANON".

Open the file and edit it by removing all the lines that point to the canon including the scanners and the printers. Save it.

Also delete the "CANON" folder as well.

Since these are in the "root" ownership, you will need to use the command "sudo" to edit the file and remove the folder.

sudo rm -rf Canon/

Password:

sudo vim InstalledPrinters.plist

Password:

Once you restart the computer the "Canon IJ Network Scanner Selector" will be uninstalled completely.