Ink droplet ejecting device with a continuous electrode

Details Ink droplet ejecting device with a continuous electrode Ink droplet ejecting device with a continuous electrode

1994-11-21

1998-09-01

Puller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 71, B41J 2045

Patent

active

058017313

ABSTRACT:
An ink droplet ejecting device includes first and second grooves formed on a piezoelectric ceramic plate. The positions of the first and second grooves are offset by a half pitch and are formed by cutting. A cover plate closes openings of the grooves at one side of the piezoelectric ceramic plate. The first grooves become gradually shallower toward one end surface of the piezoelectric ceramic plate to form flat surface portions so that the second grooves do not intercommunicate with a manifold of the cover plate. Further, first metal electrodes are formed on inner surfaces of the first grooves, and second and third metal electrodes are simultaneously formed on inner surfaces of the second grooves on the whole surface of the piezoelectric ceramic plate where the second grooves are formed. The second metal electrodes on the inner surfaces of all the second grooves are electrically connected to one another by the third metal electrodes, and the metal electrodes are connected to an LSI chip through a flexible circuit pattern. A method of manufacturing an ink droplet ejecting device also is described.

REFERENCES:
patent: 3946398 (1976-03-01), Kyser et al.
patent: 4723129 (1988-02-01), Endo et al.
patent: 4879568 (1989-11-01), Bartky et al.
patent: 5252994 (1993-10-01), Narita et al.
patent: 5363133 (1994-11-01), Sugahara et al.
patent: 5518952 (1996-05-01), Vonasek et al.

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