Acoustic ink printhead with integrated liquid level control laye

Details Acoustic ink printhead with integrated liquid level control laye Acoustic ink printhead with integrated liquid level control laye

1991-01-14

1992-06-09

Fuller, Benjamin R.

Recorders

Markers and/or driving means therefor

With ink supply to marker

310335, B41J 2045

Patent

active

051211416

ABSTRACT:
An acoustic ink printhead with an integrated liquid level control layer is presented. A spacer layer is fixed to a substrate. Apertures are created in the spacer layer, which is then used as a mask, to define acoustic lenses and ink supply channels in the substrate. The apertures in the spacer layer used to define self-aligned acoustic lenses and to form the cavities to hold the ink reservoirs for each ejector. The thickness of the spacer layer is set so that acoustic waves from the acoustic lens below are focused at the free surface of the ink which maintains its level at the top of the spacer layer by capillary action.

REFERENCES:
patent: 4454519 (1984-06-01), Oosaka et al.
patent: 4751530 (1988-06-01), Elrod et al.
patent: 4801953 (1989-01-01), Quate
patent: 4959674 (1990-09-01), Khri-Yakub et al.

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