Inkjet head

Details Inkjet head Inkjet head

2006-12-19

2006-12-19

Do, An H. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07150518

ABSTRACT:
An inkjet head includes an actuator unit, and a flow path unit. Individual electrodes are formed on a piezoelectric sheet of the actuator unit. Pressure chambers are formed in a cavity plate of the flow path unit. Each individual electrode has a main electrode region disposed in a position opposite to a corresponding pressure chamber, and a land portion connected to the main electrode region. Overhang portions protruding in a direction along a surface of the cavity plate are formed in side walls of each pressure chamber. Each land portion at least partially overlaps a corresponding overhang portion at a height level (top height level) of a contact surface between the cavity plate and the actuator unit.

REFERENCES:
patent: 5818482 (1998-10-01), Ohta et al.
patent: 6174051 (2001-01-01), Sakaida
patent: 6364468 (2002-04-01), Watanabe et al.
patent: 2003/0122902 (2003-07-01), Sakaida et al.
patent: A 11-34323 (1999-02-01), None

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