Multi-nozzle ink jet head

Details Multi-nozzle ink jet head Multi-nozzle ink jet head

2005-06-07

2005-06-07

Pham, Hai (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

06902263

ABSTRACT:
A multi-nozzle ink jet head having a diaphragm that effectively utilizes the force generated by thin-film piezoelectric elements is disclosed. The head (2) has a head substrate (28) in which are formed a plurality of nozzles (39) and a plurality of pressure chambers (29), a multi-layer diaphragm (23-1, 23-2), piezoelectric elements (27), and individual electrodes (26). By making the thickness of the common electrode layer (23-1) of the multi-layer diaphragm be thin but such that problems do not occur during multi-pin driving, optimization of the rigid layer becomes possible, and hence it is possible to use the force generated by the thin-film piezoelectric elements efficiently in ink ejection.

REFERENCES:
patent: 7-81070 (1995-03-01), None
patent: 8-118626 (1996-05-01), None
patent: 10-202876 (1998-08-01), None
patent: 11-227196 (1999-08-01), None
patent: 11227196 (1999-08-01), None
patent: 11-314365 (1999-11-01), None

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