Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1988-04-12
1989-09-05
Shaw, Clifford C.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346 75, G01D 1800
Patent
active
048643238
ABSTRACT:
A method of operating a continuous ink jet printing system which includes a nozzle arranged to be vibrated by a piezoelectric oscillator. The nozzle, in use, passes a stream of ink past a charging electrode. The continuity of charge detection is sensed by a charge detector disposed immediately downstream of the charging electrode. The amplitude of the stimulation voltage applied to the piezoelectric oscillator is set sufficiently low such that the level of charge detected by the charge detector is below a threshold value. The amplitude of the stimulation voltage is then increased in discrete steps until the charge detector detects intermittent and proper droplet charging. The amplitude of the stimulation voltage is then further increased from its level at the end of the second step by a predetermined amount.
REFERENCES:
patent: 4393385 (1983-07-01), Tinnai et al.
patent: 4631549 (1986-12-01), Braun et al.
patent: 4638325 (1987-01-01), Schneider et al.
Doyle James J.
Lecheheb Ammar
Domino Printing Sciences PLC
Preston Gerald E.
Shaw Clifford C.
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