Patent ID: 7263773
Filing Date: 2007-09-04
Classification: B41J,Y10T

Abstract:
1. A method of manufacturing a bubble-jettype ink jet printhead, comprising: depositing, patterning, and etching a resistive material on a silicon substrate; depositing, patterning, and etching an individual signal line over a portion of said resistive material; depositing a first electrically insulating layer over said silicon substrate; etching a hole in said first electrically insulating layer exposing a portion of said resistive material absent of said individual signal line; depositing, patterning, and etching a common signal line, said common signal line being in electrical contact with said resistive material via said hole in said first electrically insulating layer; depositing a second electrically insulating layer over said silicon substrate; etching through a portion of said first and second insulating layers to expose a portion of said individual signal line in a region absent of said resistive material; depositing, patterning, and etching a film to form a plurality of chamber walls, a first of said plurality of barrier walls being on top of a substantial portion of said individual signal line, and a second of said plurality of chamber walls being parallel to said first of said plurality of chamber walls, said second of said plurality of chamber walls being on an opposite side of said hole in said first insulating layer than said first of said plurality of chamber walls; and attaching a nozzle plate to a top portion of said plurality of chamber walls, said nozzle plate being perforated by a plurality of nozzle holes, one of said plurality of nozzle holes being directly above said hole in said first insulating layer.