Browse Prior Art Database

Ink Jet Emitter

IP.com Disclosure Number: IPCOM000076393D
Original Publication Date: 1972-Feb-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Chen, WH: AUTHOR [+3]

Abstract

This method of ink jet printing uses an electric field to pull drops off the projecting meniscus and propel them to the paper. A conical shaped cavity 1 is filled with ink via supply tube 2. A brass plate 3 sealing one end of the cavity has attached thereto a piezoelectric transducer 4. A grounded tube 5 is affixed to the opposite end of the cavity. A ring electrode 6 is mounted a short distance from the tube. The potential on the ring electrode 6 is a constant DC potential and drops are emitted only when the buckling transducer 4 is pulsed by squarewave generator 7. Since the drops being emitted are charged by induction, they can be deflected electronically.

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Ink Jet Emitter

This method of ink jet printing uses an electric field to pull drops off the projecting meniscus and propel them to the paper. A conical shaped cavity 1 is filled with ink via supply tube 2. A brass plate 3 sealing one end of the cavity has attached thereto a piezoelectric transducer 4. A grounded tube 5 is affixed to the opposite end of the cavity. A ring electrode 6 is mounted a short distance from the tube. The potential on the ring electrode 6 is a constant DC potential and drops are emitted only when the buckling transducer 4 is pulsed by squarewave generator 7. Since the drops being emitted are charged by induction, they can be deflected electronically.

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