Liquid droplet discharge apparatus and liquid droplet...

Details Liquid droplet discharge apparatus and liquid droplet... Liquid droplet discharge apparatus and liquid droplet...

2011-07-19

2011-07-19

Rahll, Jerry T (Department: 2874)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07980682

ABSTRACT:
A piezoelectric actuator includes first active portion which correspond to a central portion of each of pressure chambers and a second active portion which correspond to a portion, of each of the pressure chambers, located on outer circumferential sides with respect to the central portion of the pressure chamber. The first active portion and the second active portion are deformed by applying the voltage to each of the first and second active portions. The first active portion is polarized in a direction parallel to the electric field generated in the first active portion, and the second active portion is polarized in a direction opposite to the electric field generated in the second active portion, thereby making it possible to suppress the crosstalk even when a high density arrangement of the pressure chambers is realized.

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