Patent ID: 7270404

Claim:
An inkjet recording head, comprising: a plurality of ink chambers aligned, each of the plurality of ink chambers having a nozzle; a piezoelectric element arranged on an outer side of the plurality of ink chambers, the piezoelectric element using displacement in d31 direction; a plurality of active electrodes formed on a surface of the piezoelectric element, an entire surface area of each active electrode being defined by a plurality of edges of said each active electrode; and one or more piezoelectric strain absorbing holes formed through the piezoelectric element in regions proximate each outer edge surrounding said each active electrode of the piezoelectric element, wherein when voltage is applied to one of the active sections of the piezoelectric element, corresponding one of the plurality of ink chambers is compressed by the piezoelectric element, and ink filled in the one of the plurality of ink chambers is discharged through the nozzle toward a recording medium.