Patent ID: 8857953
Filing Date: 2014-10-14
Classification: B41J

Abstract:
1. A liquid ejection head comprising: a piezoelectric block body that has a plurality of pressure chambers storing liquid and arranged two-dimensionally to face respective ejection ports for ejecting liquid, a plurality of air chambers arranged adjacently relative to the plurality of pressure chambers, and a plurality of flow channels arranged along the pressure chambers so as to supply liquid, the pressure chambers, the air chambers and the flow channels being formed therein with piezoelectric members disposed between the plurality of pressure chambers and the plurality of air chambers so as to drive the liquid stored in the pressure chambers to flow toward the ejection ports by causing the inner walls of the pressure chambers to be deformed by expansion and contraction; and a connection flow channel that makes at least one of the pressure chambers communicate with at least one of the flow channels at the side of the related ejection port, wherein the piezoelectric block body is formed by laying a first piezoelectric plate having the pressure chambers and the flow channels on a second piezoelectric plate having the air chambers.