Split Aspirator for Ink Jet Printers
Original Publication Date: 1981-Oct-01
Included in the Prior Art Database: 2005-Feb-12
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.