Delphax Technologies Inc.

Xerox Corporation

Jeffrey Belbeck

Sotos M Theodoulou

Robert A Moore

Robert Stuart McCallum

Wojciech Zalewski

Sarbjit S Parhar

Theodore Bellisario

Christopher William Thomson

Robert Mccallum

In a method and apparatus for duplex inkjet printing on a web medium, a web medium is guided along an S-form transport path having generally horizontal top, middle and bottom spans and two turns linking the spans. One inkjet printhead is located to print onto a one surface of the web at the middle span and another inkjet printhead is located to print onto the opposite surface of the web at one of the other spans. To protect the printed surfaces before they are dried at least one of the turns in the S-form path is effected using an air bar to hold the printed web surfaces away from hard equipment surfaces.

Web inkjet printing method and apparatus using an air bar

A printing apparatus has a print head and a transport mechanism including a continuous transparent belt for transporting a sheet medium past a print head. The apparatus includes a through optical sensor operable to direct a sensing beam through the belt for sensing the position of the transported sheet medium when the sheet medium breaks the beam.

Apparatus and method for paper position sensing using transparent transport belt

A printing apparatus has a series of inkjet print heads spaced from one another in a transport direction. A continuous belt driven around a roller system is used to feed sheet media successively to the print heads so that a partial image printed by one print head is overprinted at a subsequent print head with registration of the partial images. A sheet medium is caused to become electrostatically tacked to the belt by passing the sheet past a charging device. Movement of the belt is tracked by a tracking sub-system and operation of the print heads is coordinated with the tracked belt movement to achieve precise registration of the partial images.

Multiple print head printing apparatus and method of operation

An image forming system having two simplex print engines is provided that transfers and fuses two images on either side of a substrate in a single nip. The two images can be formed simultaneously at the single nip.

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Mississauga, Canada

Jeffrey Belbeck