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A LOW COST METHOD OF PRODUCING DUPLEX PRINTS IN A THERMAL INK JET SYSTEM

IP.com Disclosure Number: IPCOM000026799D
Original Publication Date: 1993-Oct-31
Included in the Prior Art Database: 2004-Apr-06

Publishing Venue

Xerox Disclosure Journal

Abstract

As depicted in Figures 1 and 2, a low cost method of producing a two-pass duplex print in a Thermal Ink Jet System is disclosed. A principle advantage of this type of system is a low cost, since the paper path is much shorter than a conventional recirculating loop, and the expense of an inverter is eliminated. The relatively simple arrangement of the direct marking system allows bidirectional operation. This enables a sheet, after first side printing and return via a simple return loop, to be passed back under the printhead, in the opposite direction, for a second pass. Two fundamentally different approaches to applying the second side image are: