Patent ID: 6010209
Filing Date: 2000-01-04
Classification: B41J

Abstract:
An ink-jet recording head having a passage forming substrate which defines pressure generating chambers and contains a reservoir, ink supply ports, and nozzle passages as through-holes; a nozzle plate having a nozzle orifice communicating with said pressure generating chambers through said nozzle passages; an elastic plate sealingly covering one of the surfaces of said passage forming substrate, and a pressure generating device which pressurizes said pressure generating chambers, said ink-jet recording head comprising:first ink supply ports formed on the one surface of said passage forming substrate which faces said elastic plate;second ink supply ports formed on another of the surfaces of said passage forming substrate which faces said nozzle plate; andfirst and second pressure generating chambers communicating with said reservoir through said first and second ink supply ports;wherein a flow resistance of each of said first ink supply ports is smaller than that of each of said second ink supply ports.