Patent ID: 6513907
Filing Date: 2003-02-04
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 a conducting layer disposed at least partially on said second surface, and at least one opening extending from said first surface to said second surface, said second surface of said essentially rigid substrate further comprising first and second planar surface portions disposed essentially parallel to each other, said second planar surface portion disposed adjacent and at least partially surrounding said at least one opening and said second planar surface portion disposed closer to said first surface of said essentially rigid substrate than said first planar surface portion, thereby resulting in a thinner substrate in an area defined by said second planar surface portion than in an area defined by said first planar surface portion; 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 in an ejection direction, 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 face in said ejection direction and 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.