Patent ID: 6113218
Filing Date: 2000-09-05
Classification: B41J,Y10T

Abstract:
An ink jet head, comprising:a first substrate defining an internal ink ejection chamber having a volume in communication with an ejection nozzle, said ink ejection chamber comprising a deformable diaphragm capable of altering the volume of said ink ejection chamber, said diaphragm having first and second surfaces wherein the first surface is in contact with said ink ejection chamber;a second substrate bonded to said first substrate, said second substrate comprising an electrode opposing the second surface of said diaphragm and separated a precise gap distance therefrom in an uncharged state, said electrode electrostatically deforming said diaphragm when charged, wherein the precise gap distance comprises an electrical gap distance ranging from 0.05 .mu.m to 2.0 .mu.m; anda vibration chamber having opposing walls, one of which is defined by the second surface of said diaphragm and the other of which has said electrode formed thereon, wherein said vibration chamber is isolated from said ink ejection chamber by said diaphragm.