If you did not migrate your account yet, visit https://idp-portal-info.suse.com/
For plain printers, see the links in the "All of Printing"-box on this page.
For all-in-one devices (i.e. when the printer has also a scanner device included) you have to set up the scanner unit separately, see
YaST/Modules/Scanner at http://old-en.opensuse.org/YaST/Modules/Scanner