Patent ID: 6354695
Filing Date: 2002-03-12
Classification: B41J

Abstract:
A bubble-jet type ink jet printhead, comprising:a substrate perforated by a plurality of ink feed holes; a nozzle plate perforated by a plurality of nozzle holes, said nozzle plate being fixed to a top surface of said substrate by an adhesive layer, each one of said plurality of nozzle holes comprising a central axis, the central axis of each of said plurality of nozzle holes being coincident with the central axis of corresponding ones of said plurality of ink feed holes; a plurality of concave portions formed on the substrate, each of said plurality of concave portions corresponding to one of said plurality of nozzle holes; and a plurality of resistive layers, each located along the bottoms of corresponding ones of said plurality of concave portions, each of said plurality of resistive layers surrounding a corresponding one of said plurality of ink feed holes.