Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1990-01-29
1991-03-12
Reynolds, Bruce A.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346 75, 346140R, G01D 1518
Patent
active
049996452
ABSTRACT:
An electronically controlled marking system is provided to impart an ink spot to a stationary or moving target. The system includes an electronic control module connected to a high-pressure gas valve to control the passage of high-pressure gas to an ink spot maker, the electronic control module also being connected to a low-pressure gas valve to control the passage of low-pressure gas to the ink spot marker. Following the initiation of an ink spot marking cycle, low-pressure gas is applied to atomize ink within the ink spot marker; high-pressure gas is applied to force open a valve within the ink spot marker, thereby allowing ink to be ejected by the low-pressure gas toward the target; the high-pressure gas is removed to terminate the ejection of ink from the output nozzle, the low-pressure gas still being applied to force any remaining ink from the output nozzle; and the low-pressure gas is removed. Provision is also made for pulsing the high-pressure gas applied to the ink spot marker during the period that ink is being ejected to provide pulsed ink ejection.
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Grattan Michael A.
Wolberg Sheldon J.
Dell Marking Systems, Inc.
Preston Gerald E.
Reynolds Bruce A.
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