Patent ID: 7500728

Claim:
A liquid discharge head, comprising: a three-dimensional structure which defines a space including a pressure chamber filled with liquid and a flow channel for supplying the liquid to the pressure chamber, at least a part of the three-dimensional structure being formed by depositing layers composed of at least two different composition materials appropriately set at deposition locations of the layers on a substrate according to deposition method; the three-dimensional structure includes a diaphragm surface and a nozzle surface, wherein walls are located between the diaphragm surface and the nozzle surface; at least one wall including a first layer adjacent to the diaphragm surface, a second layer adjacent to the nozzle surface, and a third layer intermediate to the first and second layers, wherein a rigidity of the first layer is different to a rigidity of the second layer and the third layer has a lower rigidity than the first layer; and a drive element which causes discharge of the liquid from the pressure chamber through a nozzle.