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Liquid-jet head and liquid-jet apparatus

  • US 20070263041A1
  • Filed: 05/04/2007
  • Published: 11/15/2007
  • Est. Priority Date: 05/08/2006
  • Status: Active Grant
First Claim
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1. A liquid-jet head comprising:

  • a passage-forming substrate provided with an individual path including a pressure-generating chamber communicating with a nozzle orifice which ejects a liquid;

    a pressure-generating element provided in a region facing the pressure-generating chamber on the side of a first surface of the passage-forming substrate;

    a protection plate which is joined to the first surface of the passage-forming substrate on the pressure-generating chamber side, and which is provided with a pressure-generating element holding portion having the pressure-generating element arranged therein on a first surface of the protection plate;

    a reservoir formed in a region on the side of a second surface of the protection plate, the region facing the pressure-generating element holding portion;

    a compliance plate formed on a surface of the reservoir on the opposite side to the passage-forming substrate;

    a through hole which is provided in a region in the protection plate on a first end side in the longitudinal direction of the pressure-generating chamber, and which causes the reservoir to communicate with the individual path;

    an introducing path, which is provided in a region in the compliance plate on a second end side in the longitudinal direction of the pressure-generating chamber, and which supplies the liquid to the reservoir from a storage having the liquid stored therein; and

    a flexible portion with flexibility provided in a region of the compliance plate, the region facing the reservoir, which region covers at least from a part facing the through hole to a part surrounding the introducing path.

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