Liquid jet head and a liquid jet apparatus

Details Liquid jet head and a liquid jet apparatus Liquid jet head and a liquid jet apparatus

2009-01-23

2011-10-04

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S070000

Reexamination Certificate

active

08029109

ABSTRACT:
A lower electrode60in a region opposite each of pressure generation chambers12is formed to have a width smaller than the width of the corresponding pressure generation chamber12, and an upper surface and an end surface of the lower electrode60in a region corresponding to each of the pressure generation chambers12is covered with a piezoelectric material layer70. An end surface of the piezoelectric material layer70forms a slope surface sloping downward toward the outside, an upper surface and an end surface of the piezoelectric material layer70in the region opposite each of the pressure generation chambers12are covered with an upper electrode80, and a distance D1between the upper surface of the lower electrode60and the upper surface of the piezoelectric material layer70and a distance D2between the end surface of the lower electrode60and the end surface of the piezoelectric material layer70satisfy the relationship D2≧D1.

REFERENCES:
patent: 6336717 (2002-01-01), Shimada et al.
patent: 2008/0012907 (2008-01-01), Takahashi
patent: 2005-088441 (2005-04-01), None

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