Ink jet head for compressing ink to eject drops of ink

Details Ink jet head for compressing ink to eject drops of ink Ink jet head for compressing ink to eject drops of ink

1986-02-24

1987-10-13

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

310800, G01D 1516

Patent

active

047002034

ABSTRACT:
An ink jet head for compressing ink in an ink chamber to eject a drop of the ink from a nozzle. Ink compressing means for compressing the ink in the ink chamber by expanding and contracting in response to a voltage applied thereto is made of a piezoelectric high molecular substance. The ink compressing means comprises a single thin film of polyvinylidene fluoride (PVDF) or two PVDF films bonded together in a bimorph structure. The thin film is curved inwardly toward the ink chamber. Multiple nozzles are arranged in a predetermined direction. The PVDF film expands and contracts in a direction parallel to the direction of arrangement of the multiple nozzles.

REFERENCES:
patent: 4088915 (1978-05-01), Kodama
patent: 4296417 (1981-10-01), Markham
patent: 4379246 (1983-04-01), Guntersdorfer
patent: 4403382 (1983-09-01), Facoetti
patent: 4588998 (1986-05-01), Yamamuro

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