Patent ID: 7201474

Claim:
A liquid delivering apparatus comprising: at least one piezoelectric element which deforms upon application of a drive voltage thereto; an oscillating plate on which said at least one piezoelectric element is laminated and which is oscillated by deformation of said at least one piezoelectric element; and at least one liquid chamber which stores liquid and which is formed adjacent to said oscillating plate on one of opposite sides thereof that is remote from said at least one piezoelectric element, the liquid in the liquid chamber being given pressure by the deformation of said at least one piezoelectric element, so that the liquid is delivered to an exterior of the apparatus, wherein said at least one liquid chamber is formed in a laminated member including a first layer and a second layer that are bonded integrally to each other, such that at least one portion of the first layer forming at least part of said at least one liquid chamber is recessed by etching to such an extent that at least one portion of the second layer corresponding to said at least one portion of the first layer is exposed from the recessed portion of the at least one portion of the first layer to form a cover of the at least one liquid chamber, the second layer constituting the oscillating plate and having resistance to conditions under which the first layer is etched, and wherein the first layer is formed of one of metal and glass.