Ink jet printing head with buffering chamber wall having gas tra

Details Ink jet printing head with buffering chamber wall having gas tra Ink jet printing head with buffering chamber wall having gas tra

1996-08-19

1998-07-07

Yockey, David F.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

347 92, B41J 219, B41J 217

Patent

active

057776490

ABSTRACT:
An ink jet print head includes ink ejection outlets for ejecting ink, passages communicating with the ejection outlets; a common chamber for supplying the ink to the passages; ejection energy generating elements for producing energy for ejecting the ink; an ink supply passage for supplying the ink to the common chamber; a buffering chamber disposed at a position through which a pressure wave resulting from driving of the ejection energy generating elements propagate, the buffering chamber containing a gas for attenuating the pressure wave, wherein a part of a wall constituting the buffering chamber has a gas transmitting property permitting introduction of gas external of the print head into the buffering chamber and preventing passage of ink from the common chamber through the gas transmitting member.

REFERENCES:
patent: 3930260 (1975-12-01), Sicking
patent: 4404566 (1983-09-01), Clark et al.
patent: 4591873 (1986-05-01), McCann et al.
patent: 4905019 (1990-02-01), Vonasek
patent: 5021809 (1991-06-01), Abe et al.
patent: 5030973 (1991-07-01), Nonoyama et al.
patent: 5162817 (1992-11-01), Tajika et al.

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