Recorders – Record receiver deforming
Patent
1979-08-13
1981-08-25
Hartary, Joseph W.
Recorders
Record receiver deforming
346140R, G01D 1518
Patent
active
042862728
ABSTRACT:
An ink jet printer for depositing ink drops on a print receiving medium includes a print head having a fluid receiving reservoir and including an orifice plate defining a row of orifices through which ink from the reservoir passes to form a row of downward extending fluid filaments. The fluid filaments are stimulated to cause break up of each filament into a jet drop stream. A charge electrode plate is positioned beneath the print head and to one side of the row of fluid filaments. The charge electrode plate includes a plurality of charge electrodes with each of the electrodes being positioned adjacent a respective one of the fluid filaments and spaced therefrom by a predetermined distance. An ink supply inlet supplies ink to the fluid receiving reservoir in a direction substantially perpendicular to the row of orifices and to the fluid filaments. The ink supply inlet is positioned on the same side of the fluid filaments as the charge electrode plate. An ink supply outlet removes ink from the fluid receiving reservoir in a direction substantially perpendicular to the row of orifices and to the fluid filaments. The ink supply outlet is positioned on the side of the fluid filaments opposite the ink supply inlet. A valve arrangement supplies fluid to the reservoir at start up of the printer such that a fluid flow across the row of orifices from the inlet to the outlet produces a velocity component in each of the fluid filaments which deflects the filaments outward from their associated charge electrodes. Outward deflection of the filaments prevents wetting of the charge electrodes at start up of the printer.
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patent: 3891121 (1975-06-01), Stoneburner
patent: 4042937 (1977-08-01), Perry
patent: 4081804 (1978-03-01), Van Breemen
Helenski, E. F.; Start Up/Turn Off System For INR Jet Printer; IBM TDB vol. 17, No. 2, Jul. 1974, pp. 370-371.
Brady et al.; Fluid Circuit for Fast Startup of an INR Jet Head; IBM TDB vol. 17, No. 5, Oct. 1974, p. 1524.
Mix, A. L. Jr.; Charge Electrode Alignment and Retraction; IBM TDB vol. 20, No. 1, Jun. 1977, pp. 33-34.
Krause, K. A.; INR Jet Head IBM TDB vol. 19, No. 8, Jan. 1977, pp. 3216-3217.
Hartary Joseph W.
The Mead Corporation
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