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Anticlogging Ink Jet Nozzle Chamber

IP.com Disclosure Number: IPCOM000082378D
Original Publication Date: 1974-Nov-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Von Gutfeld, RJ: AUTHOR

Abstract

A major problem with ink jets is their tendency to clog. The clogging generally occurs when the ink jet is turned off, but may also occur after prolonged running of the jet.

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Anticlogging Ink Jet Nozzle Chamber

A major problem with ink jets is their tendency to clog. The clogging generally occurs when the ink jet is turned off, but may also occur after prolonged running of the jet.

The figure illustrates a system for cleaning clogged nozzles ultrasonically. An ink chamber 2 has a piezoelectric driver 4 attached to one side thereof, and has a nozzle plate 6 connected to the other side thereof. Ink jet nozzles 8 formed in the nozzle plate 6 communicate with the chamber 2 and clearance holes 10 of piezoelectric cleaning plate 12.

An ultrasonic driver, which, for example, may be an oscillator operating at a frequency of 20-30 KHZ is connected to the plate 12 by a connector 14.

The strong ultrasonic vibrations introduced in the plate 12 result in cleaning of the clogged regions. Downtime of this system is minimal, since the assembly does not have to be removed for cleaning.

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