Patent ID: 7163279

Claim:
An inkjet head comprising: a nozzle plate formed with a plurality of nozzles arranged in a row along a first direction; a chamber plate formed with a plurality of pressure chambers; a plurality of piezoelectric elements constructed and arranged to cause pressure changes in the pressure chambers in response to application of electric signals, each of said piezoelectric elements having an active section; each piezoelectric element having a piezoelectric element width in said first direction, a piezoelectric element length in a second direction orthogonal to said first direction, and an active section having an active section length in said second direction that is less than said piezoelectric element length; a diaphragm plate attached the said chamber plate; and a plurality of relay members joining the diaphragm plate and said plurality of piezoelectric elements, wherein each relay member has a relay member length in said second direction and said relay member length is shorter than said piezoelectric element length and longer than said active section length.