| 摘要 |
An inkjet head (3) comprises a wiring board (80) which. has, two-dimensionally arranged thereon, sets of nozzles (11) , pressure chambers (41) , and actuators (60) and which also has lines of wiring (87, 91) through-vias (85) , and ink flow paths (88); and connection sections (110, 111) which connect the lines of wiring to a drive section, the connection sections (110, 111) being disposed outside the arrangement region (R) in which the sets of the nozzles, the pressure chambers, and the actuators are arranged two-dimensionally. The nozzles are arranged in N rows (N is an integer greater than or equal to 2) , with each of the N rows comprising M nozzles (M is an integer greater than or equal to 2) which are arranged rectilinearly. The through-vias which correspond. to the nozzles of arbitrary n nozzle rows of the N nozzle rows (1≰n<N) are provided in the arrangement region, and the through-vias which correspond to the nozzles of the nozzle rows other than the arbitrary n nozzle rows are disposed outside the arrangement region. Thus, the simple configuration enables the space of the wiring board to be effectively utilized to reduce cost, enables the nozzles to be more densely arranged, and can improve the reliability of the lines of wiring. |
