Liquid level control structure

Details Liquid level control structure Liquid level control structure

1991-12-19

1995-02-21

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 47, B41J 204

Patent

active

053920643

ABSTRACT:
A liquid level control structure is provided comprising a plate having substantially flat top and bottom surfaces and an hourglass-shaped aperture containing a marking fluid. Protruding a known amount and at a known angle from opposite sides of the aperture waist are knife-edged lips that interact with the fluid's surface tension to control the location of an unbounded surface of the fluid.

REFERENCES:
patent: 4580148 (1986-04-01), Domoto et al.
patent: 4587534 (1986-05-01), Saito et al.
patent: 5028937 (1991-07-01), Khuri-Yakub et al.
patent: 5121141 (1992-06-01), Hadimoglu et al.

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