Patent ID: 6325488
Filing Date: 2001-12-04
Classification: B41J,H01L,Y10T

Abstract:
A printhead for an inkjet printer, comprising:an essentially rigid substrate having a first surface and a second surface, including at least one opening extending from said first surface to said second surface and first and second laminations, said first lamination being thinner than said second lamination and having a first side of said first lamination forming said first surface of said essentially rigid substrate and having said second lamination is affixed to a second side of said first lamination;a conducting layer disposed at least partially on said second side;an ink ejection assembly having a first surface and a second surface, comprising an ejector, whereby momentum is imparted to ink within said ink ejection assembly, a nozzle plate forming a first portion of said first surface of said ink ejection assembly having a nozzle through which ink is ejected, a conducting layer forming a second portion of said first surface of said ink ejection assembly, whereby said ejector is energized, and an ink feed channel opening to said second surface of said ink ejection assembly;said ink ejection assembly disposed in said at least one opening and in contact with said essentially rigid substrate such that said nozzle plate and said first surface of said essentially rigid substrate are in a predetermined relationship relative to one another and said conducting layer of said ink ejection assembly is connected to said conducting layer of said essentially rigid substrate; andwherein said at least one opening includes a first magnitude of area in said first lamination and a second magnitude of area in said second lamination, said second area magnitude being larger than said first area magnitude, whereby said opening is smaller at said first surface of said essentially rigid substrate than at said second surface of said essentially rigid substrate.