Patent ID: 9527283
Filing Date: 2016-12-27
CPC Classification: B41J

Claim Text:
1. A liquid ejection head comprising: a vibration portion that serves as a wall of a pressure chamber having a shape extending in a first direction; at least one piezoelectric element that is disposed on the vibration portion at an opposite side to the pressure chamber; and an extracting portion that electrically connects the piezoelectric element, wherein the piezoelectric element includes a first electrode, a second electrode, and a piezoelectric material layer between the first electrode and the second electrode, wherein, in a plan view, the first electrode has a planar shape that is included in shapes of the second electrode and the pressure chamber, and wherein, in a plan view, the extracting portion protrudes from a peripheral edge of the first electrode so as to cross a long side of an inner peripheral edge extending in the first direction of the pressure chamber; and the liquid ejection head further comprising: a common wire; a first relay wire that is electrically connected to the common wire; and a second relay wire that is electrically connected to the common wire, wherein the extracting portion includes i) a first extracting portion electrically connecting the first electrode extending in the first direction (+X direction) and electrically connecting the first relay wire, and ii) and a second extracting portion electrically connecting the another first electrode which is arranged to be adjacent to the first electrode extending in the first direction (+X direction) and electrically connecting the second relay wire.