Apparatus for reducing erosion due to cavitation in ink jet prin

Details Apparatus for reducing erosion due to cavitation in ink jet prin Apparatus for reducing erosion due to cavitation in ink jet prin

1983-03-28

1985-07-09

Tarcza, Thomas H.

Recorders

Markers and/or driving means therefor

With ink supply to marker

400126, G01D 1516, B41J 304

Patent

active

045285748

ABSTRACT:
A novel structure which reduces stress due to cavitation in a thermal ink jet head is disclosed. A jetting resistor is formed on a thin membrane and suspended in contact with an acoustic absorber such as silicon oil on its back surface. The pressure wave created by the collapsing bubble which occurs in the ink on the membranes front surface each time the resistor is fired is thus absorbed by the silicon oil. The failure rate of such a jetting resistor is thus substantially reduced.

REFERENCES:
patent: 2512743 (1950-06-01), Hansell
patent: 3747120 (1973-07-01), Stemme
patent: 4368476 (1983-01-01), Uehara
patent: 4370668 (1983-01-01), Hara
patent: 4410899 (1983-10-01), Haruta
patent: 4435717 (1984-03-01), Eida
Hawley, Condensed Chemical Dictionary, 1977, 9th Ed., pp. 774-775.

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