Ink jet printing apparatus having ultrasonic print head...

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

B - Operations, Transporting

41

J

101/96.0201

B41J 2/165 (2006.01)

Patent

CA 1257503

-0- INK JET PRINTING APPARATUS HAVING ULTRASONIC PRINT HEAD CLEANING SYSTEM 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.

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