Coated nozzle plate for ink jet printing

摘要

A nozzle plate for an ink jet print head which is coated with a low surface energy polymer with the attaching surface further coated by tantalum in a thickness range of 50 to 500 Angstroms. The tantalum gives excellent attachment over a wide range of environments. A master sheet of individual nozzle plates is first coated by chemical vapor deposition and then sputter coated with tantalum on the attachment side. These are quite inexpensive and avoid the use of a more expensive gold coating.