Check out this link:
http://blog.pi3g.com/2013/08/using-the-raspberry-pi-as-cups-print-server-for-windows-and-apple-mac-airprint/

Then you need to install printer driver for your printer. For my printer (Brother 2240), I have to download the ppd file from here. If you have the same printer, remember to run “apt-get install printer-driver-hpijs” first before install the ppd file.