US Patent 7468140 Method of protecting nozzle guarded printhead during fabrication

A method of fabricating a printhead is provided in which sacrificial material is deposited on a substrate having printing nozzles formed thereon so that a first portion of the sacrificial material encases the nozzles and a second portion of the sacrificial material forms part of a printing fluid containment formation surrounding one or more of the nozzles, positioning a nozzle guard over the nozzles so as to contact the second portion of the sacrificial material, and removing the first portion of the sacrificial material.