Liquid discharge apparatus

Details Liquid discharge apparatus Liquid discharge apparatus

2008-03-13

2010-06-01

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07726783

ABSTRACT:
A liquid discharge apparatus includes a liquid storage-discharge member having a liquid storage chamber for storing liquid and a liquid outlet for discharging the liquid from the liquid storage chamber to the outside of the liquid storage chamber, a vibration plate formed on the liquid storage-discharge member and a piezoelectric element having a lower electrode, a piezoelectric body and an upper electrode, which are sequentially formed on the vibration plate. The piezoelectric body includes an edge portion including at least a portion of the piezoelectric body, the portion positioned on the outside of the wall position of the liquid storage chamber, and a main portion, which is the remaining portion of the piezoelectric body. Further, the edge portion and the main portion are formed on different base layers from each other and the fracture stress of the edge portion is higher than that of the main portion.

REFERENCES:
patent: 7244016 (2007-07-01), Iwashita et al.
patent: 7350904 (2008-04-01), Noguchi et al.
patent: 2002/0097305 (2002-07-01), Sumi
patent: 5-30763 (1993-02-01), None
patent: 2005-349714 (2005-12-01), None

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