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Method to Reduce Cross-talk And to Enhance Shock Resistance of Drop-on-demand Ink Jet Array

IP.com Disclosure Number: IPCOM000059844D
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Lee, FC: AUTHOR [+4]

Abstract

A multi nozzle ink jet drop-on-demand (DOD) printer is described in which cross-talk between ink channels is minimized by means of a membrane mounted in the print head ink manifold.

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Method to Reduce Cross-talk And to Enhance Shock Resistance of Drop- on-demand Ink Jet Array

A multi nozzle ink jet drop-on-demand (DOD) printer is described in which cross-talk between ink channels is minimized by means of a membrane mounted in the print head ink manifold.

The print head comprises a drive section 1 which includes a plurality of electromechanical transducers, such as piezoelectric tubes 2, for example. Ink is supplied through inlet 3 to ink manifold 4 and through an orifice 5 to each of the piezoelectric transducers 2. A flexible membrane 6 is fixed in position in the ink manifold 4 and separated from one of the walls 7 of the manifold by an air pocket
8.

The membrane 6 functions as a large RC filter for acoustic waves with very loose requirements on the resistive element. The membrane eliminates acoustic resonance in the head manifold 4, and it smooths out large pressure fluctuation in the head manifold due to pressure-flow relationship during asynchro operation of the DOD print head. The membrane also provides shock resistance for the DOD array since it de-couples the print head from vibrations transmitted from the ink system.

Disclosed anonymously.

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