Fluid sprinkling – spraying – and diffusing – Rigid fluid confining distributor – Fluidic oscillator
Patent
1993-09-10
1995-04-18
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Rigid fluid confining distributor
Fluidic oscillator
65109, B05B 100
Patent
active
054071364
ABSTRACT:
A nozzle for an ink-jet printer is provided having a gradually converging inner diameter leading to an orifice less than 15 microns in diameter and having an outer nozzle diameter proximate the orifice at least as great as the outer diameter at other points along the nozzle. The nozzle is produced by heating a vitreous tube while rotating it, until a portion of the tube is sufficiently viscous to cause the inner diameter to converge at an angle between 5 and 25 degrees with respect to the axis of symmetry of the tube, and until the inner diameter is less than a selected orifice diameter. The gradual taper is achieved without drawing or pulling the tube and it facilitates achieving a desired orifice dimension during removal of a portion of the tube having an inner diameter less than the selected orifice diameter. The extremely small orifice size enables an ink-jet printer to deposit droplets of ink sufficiently small to make photographic-quality gray scale and color images.
REFERENCES:
patent: 1730099 (1924-10-01), Tribbett
patent: 3620457 (1971-11-01), Pearson
patent: 4185706 (1980-01-01), Baker et al.
patent: 4813611 (1989-03-01), Fontana
patent: 4942296 (1990-07-01), Jones
Galley et al, "Technique for Producing Capillaries with Reproducible Orifice Diameters for Uniform Droplet Generation". Applied Spectroscopy, vol. 46, No. 10, pp. 1460-1463.
Barraclough Scott
West David B.
Iris Graphics Inc.
Kashnikow Andres
Weldon Kevin P.
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