Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1983-08-12
1985-04-30
Goldberg, E. A.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346 75, G01D 1518
Patent
active
045147353
ABSTRACT:
An ink jet printer includes a print head for producing at least one jet drop stream from a fluid filament emerging therefrom, and charge electrode for inducing electrical charges on drops formed from the fluid filament. The charge electrode is movable into and out of an operating position in which it is adjacent and at least partially surrounds the fluid filament. A deflection field is established prior to start-up in which the field has a non-zero electrical potential in the region of the fluid filament. At start-up and shutdown of the printer, the charge electrode is retracted from its normal operating position and drops are charged by the deflection field. As a consequence, the charge electrodes are not contaminated by ink from the unstable jets. The drops in the jet drop streams are, however, charged and deflected to a catcher by the deflection field. After stable operation is obtained, the charge electrode is moved into its normal operating position. At shutdown of the printer, this sequence of steps is reversed.
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IBM Technical Disclosure Bulletin, vol. 20, No. 1, Jun. 1977, pp. 33 and 34.
IBM Technical Disclosure Bulletin, vol. 19, No. 8, Jan. 1977, pp. 3216 and 3217.
Goldberg E. A.
Preston Gerald E.
The Mead Corporation
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