Liquid discharge head and liquid discharge apparatus
AssigneeToshiba Tec Kabushiki Kaisha
InventorKazuhisa KIMURA
Life of this patent
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Abstract
According to one embodiment, a liquid discharge head includes an actuator with a plurality of pressure chambers. A cover covers one side of the actuator and includes a common liquid chamber that connects to the plurality of pressure chambers and an air bubble venting flow path connected to the common liquid chamber. A nozzle plate is on a side of the actuator opposite the common liquid chamber and includes a plurality of first nozzles that faces the plurality of pressure chambers and a second nozzle that faces an outlet of the air bubble venting flow path. A mask plate covers the nozzle plate on a side opposite of the actuator and has a first window exposing the plurality of first nozzles and a second window exposing the second nozzle.
Claims20
A liquid discharge head, comprising:
- an actuator with a plurality of pressure chambers;
- a cover covering one side of the actuator and including:
- a common liquid chamber that connects to the plurality of pressure chambers, and
- an air bubble venting flow path connected to the common liquid chamber;
- a nozzle plate on a side of the actuator opposite the common liquid chamber and including:
- a plurality of first nozzles that faces the plurality of pressure chambers, and
- a second nozzle that faces an outlet of the air bubble venting flow path;
- and
- a mask plate covering the nozzle plate on a side opposite of the actuator and including:
- a first window exposing the plurality of first nozzles, and
- a second window exposing the second nozzle.
A liquid discharge apparatus, comprising:
- a liquid discharge head including:
- an actuator with a plurality of pressure chambers;
- a cover covering one side of the actuator and including:
- a common liquid chamber that connects to the plurality of pressure chambers, and
- an air bubble venting flow path connected to the common liquid chamber;
- a nozzle plate on a side of the actuator opposite the common liquid chamber and including:
- a plurality of first nozzles that faces the plurality of pressure chambers, and
- a second nozzle that faces an outlet of the air bubble venting flow path;
- and
- a mask plate covering the nozzle plate on a side opposite of the actuator and including:
- a first window exposing the plurality of first nozzles, and
- a second window exposing the second nozzle;
- a suction nozzle with a suction port facing the nozzle plate;
- and
- a moving mechanism configured to move the suction nozzle to face the plurality of first nozzles and the second nozzle.
A liquid discharge head, comprising:
- a first actuator with a first plurality of pressure chambers spaced along a first direction;
- a second actuator spaced from the first actuator in a second direction perpendicular to the first direction and including a second plurality of pressure chambers spaced along the first direction;
- a cover on a first side of the first and second actuators and including:
- a first common liquid chamber that connects to first ends of the first plurality of pressure chambers,
- a second common liquid chamber that connects to first ends of the second plurality of pressure chambers and
- a first air bubble venting flow path connected to an upper end of the first common liquid chamber, and
- a second air bubble venting flow path connected to an upper end of the second common liquid chamber;
- a nozzle plate on a second side of the first and second actuators opposite the first side and including:
- a first plurality of first nozzles that faces the first plurality of pressure chambers,
- a second plurality of first nozzles that faces the second plurality of pressure chambers,
- a second nozzle that faces an outlet of the first air bubble venting flow path,
- a third nozzle that faces an outlet of the second air bubble venting flow path;
- and
- a mask plate covering the nozzle plate on a side of the opposite the first and second actuators and including:
- a first window exposing the first plurality of first nozzles,
- a second window exposing the second nozzle,
- a third window exposing the second plurality of first nozzles, and
- a fourth window exposing the third nozzle.
Dependencies are inferred from the claim text.