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EXTENDING THE LIFE OF A THERMAL INK JET PRINTING ARRAY USING PRINT LINE ROTATION

IP.com Disclosure Number: IPCOM000026359D
Original Publication Date: 1991-Aug-31
Included in the Prior Art Database: 2004-Apr-05

Publishing Venue

Xerox Disclosure Journal

Abstract

In existing ink jet printheads, such as, for example, one having 48 nozzles and therefore 48 heater elements, an approximately 1/6 inch high vertical array is provided. This array is scanned horizontally and the appropriate elements are enabled to produce a printed line. The print head is then moved vertically one scan line and the process is repeated. Because of the head arrangement, typically certain groups of nozzle combinations receive a higher number of operations and thus wear (erosion, impedance change, ink droplet non-uniformity, etc.).