Ink-jet head and ink-jet printer having the ink-jet head

A ink-jet head comprising:

• a head unit including a passage unit in which a plurality of pressure chambers, each having one end coupled to a nozzle for ejecting ink and the other end to be coupled to an ink supply source for supplying ink, are arranged along a plane neighboring each other, and an actuator unit arranged at a surface of the passage unit for changing the volume of each of the pressure chambers;
• signal lines electrically connected to the actuator unit, each single line supplying a drive signal for changing the volume of each of the pressure chambers;
• a support member for supporting the head unit;
• and
• a seal member arranged between the support member and either one of the passage unit and the actuator unit;
• wherein the signal lines are attached to the support member and either one of the passage unit and the actuator unit by the seal member.

An ink-jet head comprising:

• a head unit including a passage unit in which a plurality of pressure chambers, each having one end coupled to a nozzle for ejecting ink and the other end to be coupled to an ink supply source for supplying ink, are arranged along a plane neighboring each other, the passage unit including a plurality of laminated plates, and an actuator unit arranged at a surface of the passage unit to be remote from an end portion of the passage unit for changing the volume of each of the pressure chambers;
• a flexible cable electrically connected to the actuator unit and formed with signal lines as a conductive pattern, each signal line supplying a drive signal for changing the volume of the pressure chamber;
• a support member for supporting the head unit, the support member having the ink supply member and a holder for attaching the ink supply member;
• and
• a seal member arranged between the holder and a portion at the vicinity of an end portion of the passage unit;
• wherein the flexible cable is attached to the portion at the vicinity of the end portion of the passage unit and the holder by the seal member.

An ink-jet printer including an ink-jet head comprising:

• a head unit including a passage unit in which a plurality of pressure chambers, each having one end coupled to a nozzle for ejecting ink and the other end to be coupled to an ink supply source for supplying ink, are arranged along a plane neighboring each other, and an actuator unit arranged at a surface of the passage unit for changing the volume of each of the pressure chambers;
• signal lines electrically connected to the actuator unit, each signal line supplying a drive signal for changing the volume of each of pressure chambers;
• and
• a support member for supporting the head unit;
• wherein the signal lines are interposed between the support member and either one of the passage unit and the actuator unit.

An ink-jet printer including an ink-jet head comprising:

• a head unit including a passage unit in which a plurality of pressure chambers, each having one end coupled to a nozzle for ejecting ink and the other end to be coupled to an ink supply source for supplying ink, are arranged along a plane neighboring each other, and an actuator unit arranged at a surface of the passage unit for changing the volume of each of the pressure chambers;
• signal lines electrically connected to the actuator unit, each signal line supplying a drive signal for changing the volume of the pressure chambers;
• a support member for supporting the head unit;
• and
• a seal member arranged between the support member and either one of the passage unit and the actuator unit;
• wherein the signal lines are attached to the support member and either one of the passage unit and the actuator unit by the seal member.