A tag feed system is used to feed tags through a marking machine, such as a tag printer or a laser marking machine, that marks information on the tags. A laser-marking system is used to mark and label information on metal tags, and a tag feed system for the laser-marking system that drives the tag material...http://www.google.com/patents/US6079890?utm_source=gb-gplus-sharePatent US6079890 - Feed system for a marking system and laser marking system
