Pump for supplying head of ink jet printer with ink under pressu

Details Pump for supplying head of ink jet printer with ink under pressu Pump for supplying head of ink jet printer with ink under pressu

1984-04-23

1985-12-17

Gluck, Richard E.

Pumps

Motor driven

Magnetostrictive chamber

417413, 417505, F04B 4304

Patent

active

045589950

ABSTRACT:
A pump furnished with an electrostrictive vibrator which pressurizes ink to be supplied to a head of an ink jet printer. The electrostrictive vibrator is adhered at one end to a diaphragm which closes an ink pressurization chamber, so that the vibrator vibrates integrally with the diaphragm perpendicularly to a plane in which it is adhered to the diaphragm, thereby varying the volume of the pressurization chamber. A vibrator drive signal supply circuit is installed in the pump which includes a time constant generation circuit adapted to apply a time constant to the waveform of a drive signal applied to the vibrator at the time of buildups and falls of the drive signal.

REFERENCES:
patent: 3840758 (1974-10-01), Zoltan
patent: 4344743 (1982-08-01), Bessman et al.

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