1. On new server install print server role
2. On new server or old server launch print server snapin and backup it and restore like following screenshots.
3. For more details you can read this articles:
http://blogs.technet.com/b/canitpro/archive/2013/06/17/step-by-step-install-use-and-remove-windows-server-migration-tools.aspx
https://technet.microsoft.com/en-us/library/jj134150.aspx
http://www.urtech.ca/2013/06/solved-how-to-migrate-printers-into-server-2012/