Ink jet head and method of manufacturing the ink jet head

Details Ink jet head and method of manufacturing the ink jet head Ink jet head and method of manufacturing the ink jet head

2008-07-22

2008-07-22

Shah, Manish S. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S005000, C347S009000, C347S019000, C347S071000, C029S025350

Reexamination Certificate

active

11133872

ABSTRACT:
An ink jet head is manufactured by joining together a cavity unit and an actuator unit. The cavity unit has a plurality of nozzles and a plurality of pressure chambers. The actuator unit has a plurality of piezoelectric elements. The cavity unit is joined to the actuator unit such that each of the piezoelectric elements is located to face a corresponding pressure chamber. A method of manufacturing the ink jet head includes a step of defining a relation between an average nozzle diameter of a cavity unit and an average capacitance of an actuator unit. The method also includes a step of measuring the average nozzle diameter of each of cavity units and a step of measuring the average capacitance of each of actuator units. A matching cavity unit and actuator unit are selected to satisfy the relation defined in the defining step, and the selected cavity unit and the selected actuator unit are joined together.

REFERENCES:
patent: 4704675 (1987-11-01), Jacobs et al.
patent: 5402159 (1995-03-01), Takahashi et al.
patent: 5757392 (1998-05-01), Zhang
patent: 6036297 (2000-03-01), Hayasaki
patent: 6796631 (2004-09-01), Kojima
patent: 6984010 (2006-01-01), Hosono et al.
patent: 2003/0063449 (2003-04-01), Suzuki et al.

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