Hewlett-packard Development Company, L.p.

Hewlett-packard Development, L.p.

Indigo N.v.

Omer Gila

Napoleon J Leoni

Henryk Birecki

Michael H Lee

Seongsik Chang

Thomas C Anthony

William David Holland

Daihua Zhang

Richard A Fotland

Paul F Matheson

Steven J Simske

Shlomo Harush

Anthony William McLennan

Yossi Rosen

Daniel Espinosa

David S Vejtasa

Napolean J Leoni

Tom Anthony

Ronald Albert Askeland

Doron Shaked

Steven Rosenberg

Eric G Hanson

Ilanit Mor

Eyal Shelef

Thomas Camis

Peter Gysling

Rares Vernica

Rajesh Kelekar

Quang P Lam

Chuangyu Zhou

Michael W Cumbie

Alexander N Govyadinov

Hou Tee Ng

Sivapackia Ganapathiappan

Krzysztof Nauka

Manoj K Bhattacharyya

Alex Veis

Viktor Shkolnikov

Erik D Torniainen

Paul H McClelland

Jeffrey Allen Nielsen

Boris Balacheff

David Sabo

Ehud Chatow

Alfred I-Tsung Pan

Yaacov Almog

Eric G Nelson

Matthew Grant Lopez

Craig Olbrich

Boaz Tagansky

Shahar Stein

Cary G Addington

Bruce J Jackson

Guang Jin Li

Doris Chun

Stanley J Kozmiski

Asaf Anufa

Itzhak Ashkenazi

Michael Anthony Lee

Moshe Peles

Daniel Tanchangco

Boaz Eden

Yevgeny Korol

Rodney Shaw

Yael Kowal

Lior Lewintz

Brad Thomas Dransfield

Gregory Ellis

Napoleon I Leoni

Raj Kelekar

Mark Huber

Eyal Lovton

Bill Holland

Asael Degany

Viet Hung Phan

Napoloen J Leoni

Anthony W Mclennan

Yossi Rossen

David Vejtasa

In some examples, a fluid dispensing device includes a fluid chamber, a heating element adjacent the fluid chamber, and an orifice adjacent the fluid chamber. A ratio of an area of a surface of the heating element to an orifice area of the orifice is greater than or equal to 3, where the surface of the heating element faces the fluid chamber.

Fluid dispensing devices with enhanced heating elements for non-aqueous fluids

An image formation device includes a support to support movement of a substrate along a travel path, a fluid ejection device, and a belt. The fluid ejection device is located along the travel path to deposit droplets of ink particles within a liquid carrier onto the substrate to at least partially form an image on the substrate. The belt is a flexible belt located downstream along the travel path from the fluid ejection device and includes a contact portion to arcuately conform relative to, and be in movable contact against, a first arcuate portion of the substrate to at least partially remove the liquid carrier from the substrate.

Image formation device including a liquid removal belt

An image formation device includes a support, a fluid ejection device, and a first porous element. The support is to support movement of a substrate along a travel path, while the fluid ejection device is located along the travel path to deposit droplets of ink particles within a liquid carrier onto the substrate to at least partially form an image on the substrate. The first porous element is located downstream along the travel path from the fluid ejection device to be in contact against the substrate to remove, via electroosmotic flow through the first porous element, at least a portion of the liquid carrier from the substrate.

Image formation with electroosmotic liquid removal

An image formation device includes at least one frame portion supporting at least one emitter to emit airborne charges, at least one radiation element to emit radiation, and a fluid ejection device to deposit droplets of ink particles within a non-aqueous fluid carrier onto a substrate. Upon relative movement between the at least one frame portion and the substrate, the emitted airborne charges are to electrostatically fix, and the at least one radiation element is to emit radiation to cause at least further fixation of, the deposited particles relative to the substrate.

Image formation device with radiation fixation

A display device includes an electronic paper display and a ground electrode. The electronic paper display is imageable by receiving charges on a charge receiving layer of the electronic paper display. The ground electrode is opposite to the charge receiving layer of the electronic paper display and exposed at an edge of the display device.

Display device

A device includes a first portion and a first charge source. The first portion is located along a travel path of a substrate and is to receive ink particles within a carrier fluid in a pattern onto the substrate to at least partially form an image. The first charge source is downstream along the travel path from the first portion and is to emit first polarity charges to charge the at least first color ink particles to move, via electrostatic attraction through the first carrier fluid, to become electrostatically fixed in the pattern relative to the substrate. Via the first charge source or a subsequent charge source, further emission of opposite second polarity charges are to maintain electrostatic fixation of the ink particles in the pattern relative to the substrate.

Polarity fixation of ink particles

An image formation device includes a transfer member and a first portion to receive an electrically charged, image-receiving holder onto the transfer member. A second portion downstream from the first portion is to receive droplets of ink particles within a dielectric carrier fluid onto the electrically charged, image-receiving holder to form at least part of an image. A charge source is to emit airborne charges to charge the ink particles to move, via attraction relative to the image-receiving holder, through the carrier fluid to become electrostatically fixed relative to the image-receiving holder. A liquid removal unit is to remove at least the carrier fluid from at least a surface of the image-receiving holder. A transfer station is to transfer the ink particles of the image and the image-receiving holder together from the transfer member to an image formation medium.

Image formation with image-receiving holder and image formation medium

Embodiments of the present invention are directed to systems and methods for writing on electronic paper ('e-paper') and display platforms implemented with e-paper. In one aspect, a system for writing information to electronic paper includes a writing module and an erasing unit connected to the writing module. The erasing unit is configured to erase information stored in the electronic paper. The system also includes a writing unit connected to the writing module and is configured to write information to the electronic paper. Information is written to the electronic paper by orienting the writing module so that the electronic paper passes the erasing unit prior to passing the writing unit.

Writing electronic paper

An electrophotographic printer includes a charge roller in charge-transferring relation to a photoconductive imaging portion. The printer may determine an AC voltage setpoint of the charge roller.

Charge roller voltage determination

A display device includes a non e-paper portion to display a first pattern element and a passive e-paper display portion to display a second pattern element juxtaposed relative to the first pattern element.

A device includes a charge roller and a control portion. The charge roller is removably insertable to be in charge-transferring relation to, and spaced apart by a first air gap from, a photoconductive imaging portion of an electrophotographic printer. The control portion is to determine a size of the first air gap based on determination of a charging threshold voltage associated with the charge roller.

Charge roller gap determination

An imager includes an ion-emitting unit and a conveying structure to move a passive e-paper display medium in a first orientation along a travel path and to releasably support the display medium in spaced relation to receive airborne ions from the ion-emitting unit for imaging operations.

E-paper imager

A device includes an imager and a control portion. The imager is to selectively image media as an imaging job in association with a job ticket. The control portion is to at least receive a unique ID associated with the media and, based on the unique ID, to at least partially determine the job ticket and to at least partially determine a scope of content of the imaging job.

Imaging with job ticket

One example of a display device includes a first layer and a second layer including a conductive material. The second layer is attached to the first layer such that a surface of the second layer facing the first layer is exposed along an edge of the second layer. The second layer supports an electronic paper display imageable by receiving charges on an imaging surface of the electronic paper display. The second layer is electrically coupled to a counter-electrode of the electronic paper display.

The present disclosure describes writing information on substrate displays. In an example, a display on a substrate is interfaced. The interfacing includes constraining a first longitudinal side of the substrate via a first actuable slot. Further, a second longitudinal side of the substrate opposite to the first longitudinal side is constrained via a second actuable slot. Thereby the substrate is constrained between the first and second slot with the display positioned therebetween. Further, the display is operated to write information thereon via an imager while the substrate is constrained between the first and second slot.

Selectively constraining a substrate for writing

Growing community of inventors

Cupertino, CA, United States of America

Omer Gila