Patent ID: 8567925

Claim:
An inkjet head comprising: an ink supply channel configured to allow ink supplied from outside to flow; two or more ink chambers each having a bottom surface with a nozzle for ejecting the ink and an upper surface constituting a vibrating plate, the two or more ink chambers being arranged in a row along a direction in which the ink flows in the ink supply channel; one or more partition walls each partitioning the ink chambers; and a piezo-mounting plate arranged on the upper surface of the ink chambers, the piezo-mounting plate having two or more multilayer piezoelectric elements and two or more columns fixed thereto, the two or more multilayer piezoelectric elements being arranged in a row, and the two or more columns being arranged between the multilayer piezoelectric elements adjacent to each other, the two or more multilayer piezoelectric elements can vibrate the respective upper surfaces of the two or more ink chambers, wherein each of the partition walls and each of the columns are directly opposite each other across the vibrating plate, a large gap and a small gap are arranged between the two multilayer piezoelectric elements adjacent to each other, and a large gap and a small gap are arranged between the two ink chambers adjacent to each other.