Hewlett-packard Development Company, L.p.

Sean W Dobbins

Stephen William Bauer

Jaren D Marler

Paul C Ray

Spencer R Hanson

Thomas J Tarnacki

Avinoam Halpern

Ali Emamjomeh

George Sarkisian

Zeying Ma

Peter C Morris

Anne M Kelly-Rowley

Blair A Butler

David S Vejtasa

Elizabeth Ann Visnyak

William Stone Cressman

Anne M Kelley-Rowley

William S Cressman

In one embodiment, an inkjet printer includes: a first series of print bars arranged along an arc on a first side of an arched printing unit and a second series of print bars arranged along an arc on a second side of the arched printing unit and a dryer positioned within a footprint of the arched printing unit. A plurality of web guides are arranged to guide the web along a duplex printing path past the first print bars for printing on a first side of the web, then through the dryer for drying the first side of the web, then past the second print bars for printing on a second side of the web, and then through the dryer for drying the second side of the web.

Inkjet web printer and duplex web printing path

A printing system and method form one or more pretreatment compositions on a medium. The one or more pretreatment compositions are selected based upon a parameter of the medium.

Printing system

Inkjet ink formulations and methods using the same, with improved performance, wherein the inks are formulated to work as an ink set with darker inks having a higher dynamic surface tension.

Inks with improved performance

Inkjet web printer

Growing community of inventors

San Diego, CA, United States of America

Sean W Dobbins