Also with yaourt using terminal.
cnijfilter-common-mg2400- https://aur.archlinux.org/packages/cnijfilter-common-mg2400 and
Be sure that gutenprint is also installed.
sudo pacman -S gutenprint
Maybe instead of gutenprint or along with it foomatic-db-engine is also needed.
For the integrated scanner the driver is scangearmp-common (a common package).
The printer needs to be manually added.