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PRINTHEAD INK SUPPLY CONFIGURATION FOR THE REMOVAL OF AIR TRAPPED IN THE DIE INLET REGION

IP.com Disclosure Number: IPCOM000026920D
Original Publication Date: 1994-Jun-30
Included in the Prior Art Database: 2004-Apr-07

Publishing Venue

Xerox Disclosure Journal

Abstract

In the current Thermal Ink Jet (TIJ) printhead configuration, there is an air pocket that is difficult to purge by a normal priming technique, especially when the printhead is oriented at an angle of 45 degrees from the horizontal plane. Therefore, it is proposed to use the end jets in a TIJ wafer to purge trapped air by supplying the end jet with a special duct in the upper rear corner of the ink inlet channel where the pocket is formed.