Ink jet print head having ceramic ink pump member and metallic nozzle member bonded thereto

摘要

An ink jet print head (10) including a ceramic ink pump member (12) and a metallic nozzle member (16) bonded to the pump member through a channel plate (14), wherein the pump member has a diaphragm plate (18) with a piezoelectric and/or electrostrictive element (26), a spacer plate (20) having a window (28), and a laminar structure of an orifice plate (22) and a reinforcing plate (24) which structure cooperates with the diaphragm and spacer plates to define an ink chamber (30) communicating with an ink supply channel (50) formed in the channel plate through an ink inlet hole (36) formed in the reinforcing plate and a minute hole (34) formed in the orifice plate, and further communicating with a nozzle (54) formed in the nozzle member through communication holes (38, 40) formed in the orifice and reinforcing plates, and wherein the channel plate and the nozzle member are bonded to the laminar structure of the pump member.