Method and apparatus for controlling the formation and shape of

Details Method and apparatus for controlling the formation and shape of Method and apparatus for controlling the formation and shape of

1976-11-04

1977-09-06

Miller, Jr., George H.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, 346140R, G01D 1513

Patent

active

040471837

ABSTRACT:
Method and apparatus is described for controlling the formation and shape droplets in an ink jet stream. The continuous portion of the stream is illuminated with a radiant energy source such as a laser. The surface wave profile produced by illuminating the stream is sensed to provide the fundamental and harmonic frequency components thereof. A perturbation drive signal, the amplitude and relative phase of which is a function of the sensed frequency components, is provided for controlling the formation and shape of the droplets.

REFERENCES:
patent: 3769627 (1973-10-01), Stone
patent: 3907429 (1975-09-01), Kuhn et al.
Chan; W. H. et al., Feedback for Synchronized Pressure Jet Using Optical Sensor, IBM Tech. Disc. Bulletin, May 1974, vol. 16, No. 12, pp. 3877-3878.

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