Ink jet print head having a manifold wall portion and method of

Details Ink jet print head having a manifold wall portion and method of Ink jet print head having a manifold wall portion and method of

1993-12-01

1997-07-22

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 20, 347 69, 29 2535, 298901, 2643281, B41J 2045

Patent

active

056508107

ABSTRACT:
An ink ejection device for ejecting ink comprises: a piezoelectric ceramic plate for defining an ink channel for containing ink, the piezoelectric ceramic plate deforming by application of an electric voltage thereto so as to change the volume in the ink channel and eject ink from the ink channel, the piezoelectric ceramic plate being formed by injection molding so that the piezoelectric ceramic plate having one surface with a surface roughness Rz (defined in Japanese Industrial Standard "JIS B 0601") of 1 .mu.m or less; and a metal electrode provided on the surface of the piezoelectric ceramic plate for applying the electric voltage to the piezoelectric ceramic plate.

REFERENCES:
patent: 4434430 (1984-02-01), Koto
patent: 4879568 (1989-11-01), Bartky et al.
patent: 4887100 (1989-12-01), Michaelis et al.
patent: 5016028 (1991-05-01), Temple
patent: 5410341 (1995-04-01), Sugahara et al.
patent: 5430344 (1995-07-01), Takeuchi et al.

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