Liquid ejecting head, liquid ejecting apparatus, and actuator

Details Liquid ejecting head, liquid ejecting apparatus, and actuator Liquid ejecting head, liquid ejecting apparatus, and actuator

2011-08-16

2011-08-16

Mruk, Geoffrey (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S068000, C310S368000

Reexamination Certificate

active

07997696

ABSTRACT:
A liquid ejecting head includes a flow passage forming substrate that includes a plurality of pressure generating chambers juxtaposed to each other and each in communication with a nozzle for ejecting droplets, and piezoelectric elements disposed on the flow passage forming substrate with a diaphragm interposed therebetween. The piezoelectric elements include a lower electrode, a piezoelectric layer, and an upper electrode. The piezoelectric layer tapers downward at its ends. The lower electrode has a width smaller than the width of each of the pressure generating chambers. The piezoelectric layer has a larger width than the lower electrode to cover end faces of the lower electrode. The diaphragm has a top layer formed of a titanium oxide (TiOx) insulator film. The lower electrode has a top layer formed of a lanthanum nickel oxide (LaNiyOx) orientation control layer. The orientation control layer and at least part of the piezoelectric layer disposed on the orientation control layer are formed of perovskite crystals having a (001) preferred orientation.

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patent: 2009/0244213 (2009-10-01), Shimada
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patent: 2004-066600 (2004-03-01), None
patent: 2007-118193 (2007-05-01), None

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