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Split Aspirator for Ink Jet Printers

IP.com Disclosure Number: IPCOM000053550D
Original Publication Date: 1981-Oct-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Jennings, JH Wittwer, AL [+details]

Abstract

In aspirated ink jet printing heads, air flows co-linearly with the ink stream within a tunnel at approximately the same velocity to prevent the necessity for aerodynamic correction. However, the use of a tunnel has disadvantages. For example, during ink stream start-up, ink spray tends to splatter along the side walls and the deflection electrodes, which are located in the tunnel. It has been found that if the start-up is unconfined, that is not within a true tunnel, tunnel contamination may be eliminated.