System and method for process direction alignment of first and second side printed images

摘要

A method of duplex printing forms on a media web. The method includes identifying leading edges of a first side of the forms being printed in a first print zone and identifying leading edges of a second side of the forms being printed in a second print zone. The leading edges in the first print zone being identified with reference to a form length variation parameter and a drift parameter and the leading edges in the second print zone being identified with reference to another form length variation parameter and another drift parameter based on identification of leading edges in the first print zone.

主权项

1. A method for operating a duplex printer comprising:
identifying a leading edge of a first side of each form in a plurality of forms on a media web moving past a first printhead configured to eject ink onto the first side of each form, the leading edge of each form being identified with reference to a form length variation parameter associated with the first printhead and a drift parameter associated with the first printhead; and identifying a leading edge of a second side of each form in the plurality of forms moving past a second printhead configured to eject ink onto the second side of each form that is a reverse side of the first side of each form, the leading edge of each form on the reverse side being identified with reference to a form length variation parameter associated with the second printhead and a drift parameter associated with the second printhead, the form length variation parameter and the drift parameter associated with the second printhead being generated with reference to a plurality of leading edge identifications generated for the plurality of forms moving past the first printhead.