# US 2013/0155154 A1 · Liquid ejecting apparatus

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- Number: US 2013/0155154 A1
- Document ID: US20130155154A1
- Status: Published application
- Kind: A1
- Application number: 13/765,191
- Filed: 2013-02-12
- Published: 2013-06-20
- Earliest claimed: 2005-06-23
- Assignees: Seiko Epson Corporation
- Inventors: Fujio Akahane
- Web page: https://patentgrep.com/patent/US20130155154A1

## CPC

- B41J 2/14209: {of finger type, chamber walls consisting integrally of piezoelectric material}
- B41J 2/045: by pressure, e.g. electromechanical transducers
- B41J 2/14: Structure thereof {only for on-demand ink jet heads}
- B41J 2/14201: {Structure of print heads with piezoelectric elements}
- B41J 2/14233: {of film type, deformed by bending and disposed on a diaphragm}
- B41J 2/14274: {of stacked structure type, deformed by compression/extension and disposed on a diaphragm}
- B41J 2/1433: {Structure of nozzle plates}
- B41J 2/15: for serial printing
- B41J 2/161: {of film type, deformed by bending and disposed on a diaphragm}
- B41J 2/16508: {connected with the printer frame}
- B41J 2002/14459: {Matrix arrangement of the pressure chambers}
- B41J 2002/14491: {Electrical connection}
- B41J 2202/20: Modules
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A liquid ejecting head includes: flow channel units, each of which includes a pressure generating chamber operable to generate pressure therein and a nozzle plate formed with a nozzle; drive units, each of which includes a piezoelectric vibrator operable to apply a pressure vibration to the pressure generating chamber, and which correspond to the flow channel units; and a head casing to which the flow channel units and the drive units are fixed and which includes attachment parts.

## Claims

### Claim 1

A liquid ejecting head comprising:
a plurality of flow channel units, each of which includes a pressure generating chamber operable to generate pressure therein and a nozzle plate formed with a nozzle;
a plurality of drive units, each of which includes a piezoelectric vibrator operable to apply a pressure vibration to the pressure generating chamber, and which correspond to the plurality of the flow channel units, respectively; and
a head casing to which the plurality of the flow channel units and the plurality of the drive units are fixed and which includes a plurality of attachment parts, wherein
the first one and the second one of the plurality of the flow channel units are staggered;
the first one of the plurality of the attachment parts are arranged in a square which is minimum square of squares including all flow channel units, when these are projected onto plane which is include a surface of the nozzle plate.

### Claim 2 (depends on 1)

The liquid ejecting head according to claim 1, wherein the squares are rectangles.

### Claim 3 (depends on 1)

The liquid ejecting head according to claim 1, wherein the attachment part is used for attaching the liquid ejecting head.

### Claim 4 (depends on 1)

A recording apparatus comprising the liquid ejecting head according to claim 1.