Patent ID: 6402972
Filing Date: 2002-06-11
Classification: B41J

Abstract:
A method of forming an ink jet print head, the method comprising:providing a substrate having an upper surface and a lower surface; depositing a passivation layer on the upper surface of the substrate; forming a plurality of ink energizing elements on the passivation layer; etching a plurality of openings in the passivation layer, at least one opening being located proximate a respective ink energizing element; removing at least some material from the substrate to define an ink conduit providing fluid communication between a supply of ink and the plurality of openings, each of the openings having dimensions substantially smaller than the ink conduit; applying an orifice layer to the passivation layer to cover the ink energizing elements; and removing a plurality of selected portions of the orifice layer, each selected portion positioned in registration with an ink energizing element to expose the ink energizing element and to define a firing chamber.