how to add printer icon to dock
How do I place a printer icon on the dock?
MacBook Pro with Retina display, iOS 8.3
Question marked as
Open the printers in System Preferences.
Double click the desired printer to open it's print queue, that will load an application in the Dock. Drag that application anywhere in your Dock & it will become saved there.
Quit the app & it should remain in the Dock.