Patent ID: 7645031
Filing Date: 2010-01-12
Classification: B41J,Y10T

Abstract:
1. A liquid ejection head, comprising: a liquid ejection unit which includes nozzles ejecting liquid, pressure chambers connected with the nozzles and filled with the liquid, and piezoelectric elements pressurizing the liquid in the pressure chambers; a frame substrate which has a hole section passing through the frame substrate and is disposed on a side of the liquid ejection unit reverse to a side on which the nozzles are arranged, the hole section being defined with a lateral wall and corresponding to a common liquid chamber accumulating the liquid to be supplied to the pressure chambers; a cover plate which is arranged on a side of the frame substrate reverse to a side adjacent to the liquid ejection unit; and through electrodes which pass through the lateral wall of the frame substrate and are exposed on the side adjacent to the liquid ejection unit and the side adjacent to the cover plate, wherein the piezoelectric elements are applied with drive signals via the through electrodes.