Liquid-jet head and liquid-jet apparatus

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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Reexamination Certificate

active

07571994

ABSTRACT:
A liquid-jet head includes: head main bodies each including at least a nozzle plate in which nozzle orifices are formed, each of the nozzle orifices being that from which liquid droplets are ejected; a passage-forming substrate, the nozzle plate being joined to one surface of the passage-forming substrate, and a plurality of pressure generating chambers respectively communicating with the nozzle orifices being arranged side by side in the passage-forming substrate; and pressure generators, each of which applies pressure to a liquid in each of the corresponding pressure generating chambers; and a fixing plate including exposure ports through which to expose the nozzle orifices to the outside respectively in areas corresponding to the head main bodies, the plurality of head main bodies being aligned and fixed, at predetermined intervals, to the fixing plate, the liquid-jet head wherein the fixing plate includes a reservoir forming plate, a compliance plate and a sealing plate, the reservoir forming plate being provided with a reservoir communicating with the plurality of pressure generating chambers, the compliance plate being joined to one surface of the reservoir forming plate, the compliance plate including a flexible portion in an area facing the reservoir, the flexible portion being capable of changing in shape depending on change of pressure in the reservoir, the sealing plate being joined to the other surface of the reservoir forming plate, and the sealing plate thus sealing the reservoir.

REFERENCES:
patent: 2006/0098058 (2006-05-01), Yazaki
patent: 8-276586 (1996-10-01), None
patent: 11-58739 (1999-03-01), None
patent: 11-254681 (1999-09-01), None
patent: 2000-33713 (2000-02-01), None
patent: 2003-145778 (2003-05-01), None
patent: 2005-96419 (2005-04-01), None

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