To get printing work you will mainly need to install and setup cups:

working way to start with cups and a usb connected printer:

sudo pacman -S cups cups-filters cups-pdf ghostscript gsfonts foomatic-db-engine foomatic-db foomatic-db-ppds foomatic-db-nonfree foomatic-db-nonfree-ppds gutenprint foomatic-db-gutenprint-ppds system-config-printer

sudo systemctl start org.cups.cupsd.socket
sudo systemctl enable org.cups.cupsd.socket

Find out over Arch/Wiki or www if you will nees to install additional driver package, you can check openprinting side also for this:

Now you can use system-config-printer tool to find and setup your printer: