Ink jet printing apparatus having ultrasonic print head cleaning

Details Ink jet printing apparatus having ultrasonic print head cleaning Ink jet printing apparatus having ultrasonic print head cleaning

1985-04-12

1986-07-15

Goldberg, E. A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, 346140R, G01D 1518

Patent

active

046009280

ABSTRACT:
Ink jet printing apparatus having a cleaning system whereby ink is supported proximate the droplet orifices, the charge plate and/or the operative catcher surface and ultrasonic cleaning vibrations are imposed on the supported ink mass. Such cleaning can be implemented with ink cross-flowing through the print head cavity and/or in cooperation with a varying pressure differential across the charge plate, which cause ink to oscillate inwardly/outwardly within the orifices.

REFERENCES:
patent: 4123761 (1978-10-01), Kimura et al.
patent: 4245224 (1981-01-01), Isayama et al.
patent: 4404566 (1983-09-01), Clark et al.

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