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FABRICATION SCHEME FOR TYPE I CHARGE ELECTRODES

IP.com Disclosure Number: IPCOM000024910D
Original Publication Date: 1982-Oct-31
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

In the ink jet printing art, one type is accomplished by forcin breaks up into individual dioDlets at well defined locations in relation to those one or more nozzles. ink to screte At the poih of droplet formation or breakoff from the ink jet, a charge is induced on the ink droplets so that the subsequent trajectory of those droplets can be manipulated. The typical manipulation technique is to cause the charge droplets to pass through a static electric field which deflects the ink droplets in accordance with a pattern depending upon the charge introduced at the droplet breakoff point. When multiple ink jets are simultaneously generated, a multitude of charging tunnels or electrodes must be precisely positioned in relation to those jets and furthermore those tunnels must be coupled to control electronics for causing each individual droplet to carry a unique charge. The charge electrode alignment must be maintained at elevated temperatures in spite of thermal expansion in the materials which mount the electrode. Those materials must also be compatible with the ink used in the printing system. A need exists for cost-effective and easily-manufacturable process for mounting charged tunnels in relation to ink jet nozzle arrays which satisfy the above criteria.