Hewlett-packard Development Company, L.p.

Other

Hewlett-packard Development, L.p.

Wesley R Schalk

Arthur H Barnes

Matthew Allen Shepherd

Kevin Lo

Justin M Roman

Jesse Otto Sutherland

Howard G Wong

Allan G Olson

Kenneth R Williams

Morgan Thomas Schramm

Kris M English

Lynn A Collie

Roger J Kolodziej

Paul Clinton Coffin

Judson Malcolm Leiser

Jeffrey G Bingham

Duane A Koehler

Paul Mark Haines

Steve A O'Hara

Ronald J Ender

Christopher John Arnold

Paul Allan Osborne

Al Olson

David N Olsen

Mark H MacKenzie

Kevin E Swier

Michael E Peterschmidt

Miquel Boleda Busquets

Stephen G Brown

Dan R Dwyer

Bernd Karlsboeck

Ki Jung Han

Ranjit Bhaskar

Pierre Joseph Kaiser

Mark M Proia

Andrew T Davis

Jefferson Patrick Ward

Kris Randall Livingston

Hector Jose Lebron

Raymond C Sherman

Luke P Sosnowski

Robert Lawrence Winburne

Jake Wright

Vanessa Verzwyvelt

Bruce A Axten

David M Wetchler

Dennis J Schissler

Randall West

Timothy Jacob Luedeman

Luis Elenes

John Geile

Kenneth Kay Smith

Jun Zeng

Robert M Yraceburu

Peter G Hwang

Michael V Leman

Gary Joseph Dispoto

Dean J Richtsmeier

Jeffrey H Luke

Bruce G Johnson

David Brian Olsen

David Ridgway Otis, Jr

David B Novak

Matt G Driggers

Sean Daniel Fitzgerald

Mathew Lavigne

Bradley R Larson

Sunil Kothari

Brent Ewald

William F Winters

David M Berfanger

Brad Benson

John James Cantrell

Scott Martin

Michael Ewe

Wayne J Schmidt

Juan D Ramos

Mike M Morrow

Jeremy E Barribeau

Kurt F Olsen

Eric Collins

Tyler Phillip Kapp

Miguel Angel Lopez Alvarez

Mark Mackenzie

Francisco Javier Gomez Maurer

Xin Cheng

Sam Sing

Gary T Strowe

Stephen J Brown

Russell Sterling Sauer

James R Owen

Catherine Elizabeth Gould

James J Genis

John M Ennis

David Otis

Erik A Anderson

Michael Duda

Saurabh Shripad Bhide

Francisco Oblea

M Lynn Cheney

In one example in accordance with the present disclosure, a fluid extraction system is described. The fluid extraction system includes an interface to fluidically and electrically couple a removable extraction reservoir to a printing device. The removable extraction reservoir is to receive an amount of fluid from a reservoir in the printing device. The system also includes a controller to, based on data received from memory of an interfaced removable extraction reservoir, initiate an extraction operation wherein fluid from the reservoir is passed to the removable extraction reservoir.

Fluid extraction via removable extraction reservoirs

According to examples, a system may include a first carriage carrying a laying device that may form a build material layer over a build area and a first energy source that may apply energy onto the build material layer as the first carriage is moved over the build material layer. The system may also include a second carriage carrying an agent delivery device and a second energy source, in which the agent delivery device may selectively deliver an agent onto the layer of build material and the second energy source may apply energy onto the agent and the layer of build material as the second carriage is moved across the build material layer. The system may further include a controller to control movement of the first carriage and the second carriage across the build area, in which the first carriage may be independently movable with respect to the second carriage.

Independently movable carriages carrying respective energy sources

A print liquid supply apparatus or interface structure to be connected to a print system comprises a liquid channel, liquid interface and integrated circuit contact pads.

Print liquid supply

An example of a device () may include a valve body (). The device may include a printing substance transfer window () through the valve body (). The device () may include a printing substance dispensing nozzle () rotatable within the valve body () between a first orientation with an orifice of the printing substance dispensing nozzle () facing an internal face of the valve body () and a second orientation with the orifice () of the printing substance dispensing nozzle () facing the printing substance transfer window (). The device () may include a dispensing-side gasket material () slideable against the internal face of the valve body () when rotating the printing substance dispensing nozzle () between the first orientation and the second orientation.

Rotatable dispensing nozzles

Examples describe maintenance scheduling of printhead in an image forming device by monitoring image data processed by an image forming device, determining that the image data processed by the image forming device comprises color image data, and generating a firing signal based on a mode of the image forming device.

Maintenance scheduling

A build material recovery system for a three-dimensional (3D) printer can include a selective solidification device to create a 3D object using build material, a build processing device to separate the 3D object from unfused build material, a material separating and conditioning device to condition the unfused build material, and a material storage device to store the conditioned build material.

Build material recovery for a three-dimensional (3D) printer

In one example, a system to fill or drain a reservoir in a printer includes a controller to set a unit to a total capacity of a container divided by an integer greater than 1, a container sensor to sense the container connected to the printer, and a pump to pump, in set unit increments, at least one unit of a printing agent from the container to the reservoir or from the reservoir to the container. In one example, a memory having processor executable instructions to generate a graphical user interface displaying, during the transfer of a printing agent from a container to a reservoir in a printer or from the reservoir to the container, an animation showing a changing volume of the printing agent in the reservoir and a corresponding changing volume of the printing agent in the container.

Printing agent transfer for 2D and 3D printers

Examples of the present disclosure relate to a container. The container has a chamber for storing build material for a three-dimensional printing system. The container comprises an opening coaxial with the chamber for coupling to the three-dimensional printing system. The container is configured such that rotation of the chamber in a first direction conveys build material in the chamber to the three-dimensional printing system and rotation of the chamber in a second direction conveys the build material away from the three-dimensional printing system.

Chamber for storing build material

A control system for a three-dimensional printer includes an energy component interface, an agent depositing component interface, and control logic. The control logic controls the operation of an energy component through the energy component interface and an agent depositing component through the agent depositing component, in forming an output object that is specified in a print job. Additionally, in some examples, the control logic can implement a plurality of modes. Each mode, when selected modulate one or more operational parameters of a least one of the energy component or agent depositing component.

Modulating a three-dimensional printer system based on a selected mode

A three-dimensional (3D) printer includes a selective solidification module to selectively solidify portions of successive layers of a build material on a build platform. The 3D printer also includes a cartridge receiver to hold a removable material cartridge that accepts material from the 3D printer and makes material available to the 3D printer for printing of the 3D object.

Three-dimensional printer

In one example, a fusing system for an additive manufacturing machine includes a first carriage carrying a layering device and a fusing lamp, and a second carriage carrying a fusing agent dispenser. The first carriage and the second carriage are movable back and forth over the work area along the same line of motion so that the first carriage follows the second carriage in one direction and the second carriage follows the first carriage in the other direction.

Additive manufacturing

In an example implementation, a method of printing a three-dimensional (3D) object includes scanning a print bar in a first direction over a build platform of a 3D printer to deposit a liquid agent onto a layer of build powder. The print bar is then indexed in a second direction substantially orthogonal to the first direction before scanning the print bar back over the build platform in a third direction opposite the first direction to deposit additional liquid agent onto the layer of build powder.

Indexing in 3D printing

Example color resources are generated. A first luminosity amount of a greyscale color in a greyscale color space is determined. The greyscale color corresponds with a transformation of a source color in a first color space converted to the greyscale color. The source color corresponding with a depletion color in a second color space, and the depletion color has a second luminosity amount. A target color in a color resource is generated via adjusting a black channel amount in the depletion color to match the second luminosity amount with the first luminosity amount. The target color to correspond with the source color in the color resource.

Color resources

Example systems relate to recoater movement. A non-transitory machine readable medium may contain instructions executable by a processor. The instructions may include instructions to change an action of a recoater in response to a determination that the recoater has reached a first location of a build area comprising build material. Instructions may further include instructions to lift the recoater in response to a determination that the recoater has reached a second location of the build area. Instructions may additionally include instructions to move the recoater over the second location at the lifted position, wherein the second location includes a build-up of the build material.

Recoater movement

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Vancouver, WA, United States of America

Wesley R Schalk