Ink-jet head

Details Ink-jet head Ink-jet head

2007-09-11

2007-09-11

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S070000

Reexamination Certificate

active

11067641

ABSTRACT:
Each actuator unit is a lamination of four piezoelectric sheets, and individual electrodes are provided on the piezoelectric sheet. Each individual electrode includes a main electrode region disposed at such a position to be opposed to a pressure chamber and a connection electrode region extending on one side of the main electrode region and has a land on its surface. The individual electrode is formed with auxiliary electrode portions extending from a portion of the main electrode region close to the boundary between the main electrode region and the connection electrode region toward two other individual electrodes, respectively, located adjacent to the individual electrode concerned on both sides of the land. The auxiliary electrode portions are provided with proximate portions close to the two other individual electrodes, respectively, and are opposed to pressure chambers opposed to the two another individual electrodes, respectively.

REFERENCES:
patent: 5402159 (1995-03-01), Takahashi et al.
patent: 6984027 (2006-01-01), Sakaida et al.
patent: 2004/0113994 (2004-06-01), Shinkai
patent: A 4-341852 (1992-11-01), None

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