Patent ID: 7316469

Claim:
An ink-jet head comprising: a first passage forming member elongated in one direction and having an ink inlet port in the vicinity of one longitudinal end thereof, an ink outlet port in the middle section in the longitudinal direction thereof, and a first ink passage extending from the ink inlet port to the ink outlet port, the ink inlet and outlet ports being open in first and second directions opposite to each other, respectively; a second passage forming member having therein a second ink passage connected to the first ink passage via the ink outlet port; and a circuit board disposed at a position where the first passage forming member is sandwiched between the circuit board and the second passage forming member with respect to the first direction, an electronic element being mounted on the circuit board, wherein a projection defining a recess opened in the first direction is formed on a surface of the first passage forming member, the surface being at least between the other longitudinal end thereof and the middle section thereof and facing the circuit board, and wherein the electronic element is mounted on position facing the recess of the circuit board, and is received therein.