SINGLE PASS DUPLEX WITH SIMULTANEOUS MARKING IN A THERMALINK JET SYSTEM
Original Publication Date: 1993-Oct-31
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
This disclosure describes multiple architectures for a single pass, duplex printing system employing full width array Ink Jet assemblies as the marking mechanism. Moreover, each of the architectures depicted in Figures 1, 2, 3A and 3B employ a pair of simultaneously firing Thermal Ink Jet full width arrays. The direct marking capability of a Thermal Ink Jet marking assembly lends itself to a compact cost effective arrangement to deliver efficient single pass duplex performance. Several advantages are notable with respect to this concept. First, as in all two-pass Thermal Ink Jet systems, and even in a single pass tandem Thermal Ink Jet system, cockle growth from first side printing can significantly impact second side print quality and reliability. In fact, cockle growth may be so large as to render duplex printing in such systems unfeasible. In this concept, because both sides are printed virtually at the same time, duplex performance is achieved without the inherent problems related to cockle. This concept also offers print station redundancy, where in the event of a printhead failure, the printer may still deliver simplex prints prior to the point at which service for the machine can be obtained, thereby improving the overall up-time of the system.