Patent ID: 7377618
Filing Date: 2008-05-27
Classification: B41J

Abstract:
1. A printhead for an inkjet printer providing high resolution printing, comprising: a substrate including at least one ink ejector on a surface of the substrate; a metal orifice plate having a plurality of orifices disposed through the orifice plate from a first surface proximate the surface of the substrate to a second surface distal to the surface of the substrate, the orifice plate having a thickness in the range of about 6 to 19 microns and at least two orifices of the plurality of orifices having centers at the second surface spaced apart by a distance having a range of about 15 to 75 microns and each of the at least two orifices having an orifice opening at the second surface with a diameter having a range of about 3 to 20 microns, wherein the metal orifice plate further comprises at least one alignment structure, and wherein the at least one alignment structure further comprises an annular ring formed into the metal orifice plate around a bore formed through the metal orifice plate; and a barrier layer securing the orifice plate to the substrate, the barrier layer defining a plurality of firing chambers each arranged in correspondence with a respective ink ejector,