Abstract: An ink-jet head (1) jets supplied liquid through plural nozzles (14). The ink-jet head (1) includes a liquid introduction port (23A), a liquid discharge port (23B), a common liquid chamber, and plural individual liquid chambers. The liquid introduction port (23A) introduces the liquid supplied from the outside. The liquid discharge port (23B) discharges the liquid to the outside. The common liquid chamber is disposed so as to communicate with the liquid introduction port (23A) and with the liquid discharge port (23B). The plural individual liquid chambers communicate with the common liquid chamber and with respective of the plural nozzle openings (14).

Abstract: An ink-jet head (1) jets supplied liquid through plural nozzles (14). The ink-jet head (1) includes a liquid introduction port (23A), a liquid discharge port (23B), a common liquid chamber, and plural individual liquid chambers. The liquid introduction port (23A) introduces the liquid supplied from the outside. The liquid discharge port (23B) discharges the liquid to the outside. The common liquid chamber is disposed so as to communicate with the liquid introduction port (23A) and with the liquid discharge port (23B). The plural individual liquid chambers communicate with the common liquid chamber and with respective of the plural nozzle openings (14).

Abstract: A filter unit (3) includes a housing (161), a housing (162), a filter member (164), and a packing (165A). The housings (161) and (162) are joined to each other liquid-tightly. The filter member (164) and the packing (165A) are disposed so as to be sandwiched between the housing (161) and the housing (162). The housing (161) is formed with a projection (167) located outside a portion of the housing (161) which is contacted by the O-ring. The housing (162) is formed with a recess (166) for receiving the projection (167) therein. A sealing material (168) is provided between the projection (167) and the recess (166).