A fluid-jet printhead (200) has a substrate (10) having at least one layer (82) defining a fluid chamber (100) for ejecting fluid. The printhead (200) also includes a resistive layer (30) disposed between the fluid chamber (100) and the substrate (10) wherein the fluid chamber (100) has a smooth planer surface between the fluid chamber (100) and the substrate (10). The printhead (200) has a conductive layer (40) disposed between the resistive layer (30) and the substrate (10) wherein the conductive layer (40) and the resistive layer (30) are in direct parallel contact. The conductive layer (40) forms at least one void creating a planar resistor (46) in the resistive layer (30). The planar resistor (46) is aligned with the fluid chamber (100). <IMAGE>
申请公布号
DE60101138(T2)
申请公布日期
2004.09.23
申请号
DE2001601138T
申请日期
2001.12.10
申请人
HEWLETT-PACKARD COMPANY, PALO ALTO
发明人
CHEN, ZHIZANG;XU, GENBAO;JOHNSTONE, MARK ALAN;WHITLOCK, JOHN P.