# US 2016/0355016 A1 · Inkjet head

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- Number: US 2016/0355016 A1
- Document ID: US20160355016A1
- Status: Published application
- Kind: A1
- Application number: 15/242,803
- Filed: 2016-08-22
- Published: 2016-12-08
- Earliest claimed: 2013-11-22
- Assignees: Kabushiki Kaisha Toshiba; Toshiba Tec Kabushiki Kaisha
- Applicants: Kabushiki Kaisha Toshiba; Toshiba Tec Kabushiki Kaisha
- Inventors: Isao Suzuki
- Web page: https://patentgrep.com/patent/US20160355016A1

## CPC

- B41J 2/155: for line printing
- B41J 2/14209: {of finger type, chamber walls consisting integrally of piezoelectric material}
- B41J 2/1433: {Structure of nozzle plates}
- B41J 2002/14475: {characterised by nozzle shapes or number of orifices per chamber}
- B41J 2202/12: with ink circulating through the whole print head
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

An inkjet head comprises a pressure chamber; a nozzle plate including a first surface at the side of the pressure chamber, a second surface opposite to the first surface, a first nozzle formed into a frustum which penetrates the first surface and the second surface and the diameter of which decreases as it goes closer to the second surface, and a second nozzle formed into a frustum which is the same as the frustum of the first nozzle; and a driving element configured adjacent to the pressure chamber to eject droplets from the first nozzle and the second nozzle simultaneously; wherein the part of the first nozzle on the first surface is integrally connected to the part of the second nozzle on the first surface, and the part of the first nozzle on the second surface is separated from the part of the second nozzle on the second surface.

## Claims

### Claim 1

An inkjet head comprising:
a plurality of pressure chambers;
a nozzle plate configured to include a first surface at a side of the pressure chambers and a second surface opposite to the first surface; and
a plurality of integrated nozzles comprising a first nozzle and a second nozzle which are arranged to face a same pressure chamber of the pressure chambers, wherein the plurality of integrated nozzles are arrayed in a longitudinal direction of the nozzle plate to face the pressure chambers, respectively, and penetrate the nozzle plate.

### Claim 2 (depends on 1)

The inkjet head according to claim 1, wherein
the first nozzle and the second nozzle are adjacently arranged in a direction crossing the longitudinal direction of the nozzle plate.

### Claim 3 (depends on 2)

The inkjet head according to claim 2, wherein
the first nozzle and the second nozzle are adjacently arranged in a direction orthogonal to the longitudinal direction of the nozzle plate.

### Claim 4 (depends on 1)

The inkjet head according to claim 1, wherein
the first nozzle and the second nozzle are identical in shape.

### Claim 5 (depends on 2)

The inkjet head according to claim 2, wherein
the plurality of integrated nozzles further comprises a third nozzle adjacent to the first nozzle in the longitudinal direction of the nozzle plate and a fourth nozzle adjacent to the second nozzle in the longitudinal direction of the nozzle plate, wherein the third nozzle and the fourth nozzle are arranged to face the same pressure chamber which the first nozzle and the second nozzle face.