INK JET ACOUSTIC WAVE SUPPRESSION
Original Publication Date: 1981-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
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.