发明授权
US08684501B2 Fluid ejection device 有权
流体喷射装置

Fluid ejection device
摘要:
A fluid ejection device includes a thin film heater resistor portion having a heater resistor, and a two-layer structure disposed over the heater resistor. The two-layer structure includes a top layer and a bottom layer, with the top layer having a hardness that is at least 1.5 times greater than the hardness of the bottom layer.
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