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VARIABLE DENSITY INK SOURCE FOR FULL WIDTH THERMAL INK JET IMAGE BARS

IP.com Disclosure Number: IPCOM000027576D
Original Publication Date: 1997-Dec-31
Included in the Prior Art Database: 2004-Apr-08

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is a variable density ink supply for full width image bars that achieves high quality gray scale in a thermal ink jet printer. As shown in Figure 1, an implementation of ink source 10 consists of mixing a carrier and a dye in a manifold of an appropriate printhead 20 or printhead segment 22. For manifolds that contain small volumes of ink, dye injection takes place by way of multiple bubbles using a pulsed heater. The mixing of