Patent ID: 6099106
Filing Date: 2000-08-08
Classification: B41J,Y10S,Y10T

Abstract:
An ink jet print head, comprising:a substrate formed with a plurality of mutually parallel ducts each having an outlet opening and partition walls separating said ducts;an ink ejection element, selected from the group consisting of thermal elements and piezoelectric elements, operatively associated with each of said ducts for selectively ejecting ink fluid from said ink duct and ejecting ink droplets through said respective outlet openings upon an excitation of said ink ejection element; anda cover plate disposed on said ducts, said cover plate including a first layer disposed directly on said ducts, said first layer being a deposition layer formed with a plurality of openings for forming voids for said ducts in said substrate by an isotropic etching operation, and including a second layer disposed directly on said first layer and covering said openings, said second layer being a nonconformal deposition layer.