Hewlett-packard Development Company, L.p.

Yit Hong Tor

Brian J Keefe

Lawrence H White

Garrett E Clark

Andrew F Phillips

Alex Andrea Tallada

Chandrasekhar Nadimpalli

Gonzalo Gaston Llado

Francisco Lopez Moral

Christopher Hans Bakker

Ana Cristina Garcia Alvarez

Glenn D McCloy

Maria Dinares Argemi

Maria Magdalena Martinez Ferrandiz

Xavier Bruch Pla

Glory J Abadilla

Ronald A Askeland

Jeffrey A Wagner

Daniel V Keane

Alyssa M Siegman

Glenn D Mccloy

A printing apparatus includes a printhead having a nozzle to eject liquid and an actuator associated with the nozzle. A controller is provided to activate a recovery sequence including heating the printhead without firing drops in a first phase, activating the actuator to fire 1000 drops or more from the nozzle in a second phase after the first phase, and heating the printhead and applying pressure to expel liquid from the nozzle in a third phase after the second phase.

Printhead recovery

An apparatus and method support a plurality of print head dies () on a print bar (). The plurality of print head dies () comprise a print head die () having a circuit () forming a series () of information bits (), wherein bit locations in the series () are mapped to information type definitions based on a location of the print head die () on the print bar () relative to other print head dies () on the print bar ().

Print head bit information mapping

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San Diego, CA, United States of America

Yit Hong Tor