Patent ID: 7517060

Claim:
A cavitation structure for a print head, comprising: a first dielectric layer overlying at least a first portion of a substrate; a second dielectric layer having a first portion overlying at least a second portion of the substrate and a second portion, different from the first portion of the second dielectric layer, overlying at least a portion of the first dielectric layer; a cavitation layer having a first portion in contact with the first dielectric layer and a second portion in lateral contact with the second portion of the second dielectric layer; and a third dielectric layer disposed on only the first portion of the second dielectric layer, such that an entire upper surface of the cavitation layer is free of the third dielectric layer; wherein a first sidewall of the cavitation layer is in contact with a sidewall of a first portion of the third dielectric layer and a second sidewall of the cavitation layer is in contact with a sidewall of a second portion of the third dielectric layer.