Ink printhead droplet ejecting technique

Details Ink printhead droplet ejecting technique Ink printhead droplet ejecting technique

1981-06-05

1983-07-12

Hartary, Joseph W.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346140R, G01D 1516

Patent

active

043933840

ABSTRACT:
A method of ejecting individual ink droplets on demand from an enclosed ink chamber through a nozzle wherein the pressure of ink within the chamber is controlled to maximize the positive droplet ejecting pressure while controlling the negative pressure cycle to prevent cavitation, and also to return the ink pressure to its steady state static value quickly in preparation for another droplet ejection. The ink pressure is controlled by controlling the volume of the ink chamber and the rate at which it is changed.

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