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INK JET ACOUSTIC WAVE SUPPRESSION

IP.com Disclosure Number: IPCOM000024597D
Original Publication Date: 1981-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 38K

Publishing Venue

Xerox Disclosure Journal

Abstract

In ink jet printing systems in which ink droplets are expelled from an ink containing channel by transducer deflection of the channel walls, it has been found that unwanted acoustic' pressure waves often develop within the channel after each droplet is ejected. These acoustic waves can interfere with optimum ink jet operation. This interference can be reduced by using ink containing channels whose walls are lined at least in part with a viscoelastic material to damp out the waves. As an example, some polyurethanes have been found to be suitable wall lining materials.

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XEROX DISCLOSURE JOURNAL

INK JET ACOUSTIC WAVE SUPPRESSION Proposed Curt R. Raschke Classification

U.S. CI. 346/140 Int. Cl. Gold 15/16

In ink jet printing systems in which ink droplets are expelled from an ink containing channel by transducer deflection of the channel walls, it has been found that unwanted acoustic' pressure waves often develop within the channel after each droplet is ejected. These acoustic waves can interfere with optimum ink jet operation. This interference can be reduced by using ink containing channels whose walls are lined at least in part with a viscoelastic material to damp out the waves. As an example, some polyurethanes have been found to be suitable wall lining materials.

Volume 6 Number 2 March/April 1981 67

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68

  XEROX DISCLOSURE JOURNAL Volume 6 Number 2 March/April 1981

[This page contains 1 picture or other non-text object]