Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Other

Hewlett-packard Development, L.p.

Ali Emamjomeh

Erica Montei Fung

George Sarkisian

Carolin Fleischmann

Shannon Reuben Woodruff

Keshava A Prasad

Brian J Keefe

Yi Feng

Jesiska Tandy

Alexey S Kabalnov

Greg Scott Long

Elizabeth Ann Visnyak

Kenneth Flack

Rachael Donovan

Carmina Querol Esparch

Joseph Edward Scheffelin

Stephen G Rudisill

Geoffrey Schmid

Roger J Kolodziej

Lawrence H White

Paul Mark Haines

Michael John Regan

Radha Sen

Janis Horvath

Glenn Thomas Haddick

Michael A Novick

Bernardo A Gutierrez

Winthrop D Childers

Hou Tee Ng

Vladek P Kasperchik

Lihua Zhao

Alejandro Manuel De Pena

Sterling Chaffins

Hector Jose Lebron

Jacob Wright

Kevin P Dekam

Yubai Bi

Cassady Sparks Roop

Domingo A Figueredo

Blair A Butler

Alay Yemane

Edward Dale Davis

Gregory T Hindman

Jayanta C Panditaratne

Johnathon Holroyd

Harold Lee Van Nice

Daniel Vincent Keane

Nathan Kazutoshi Denni

Donna M Sirenski

Sivapackia Ganapathiappan

Krzysztof Nauka

Ronald Albert Askeland

Howard S Tom

James William Stasiak

Steven Warren Steinfield

Sergio Puigardeu Aramendia

Kristopher J Erickson

James A Feinn

Zeying Ma

Hai Quang Tran

David Michael Ingle

David Herbert Donovan

Andrew E Fitzhugh

Jake Wright

Ulrich E Hess

Grant Allen Webster

David S Vejtasa

Andre Garcia

Fereshteh Khorrami

Terri I Chapman

Joshua A Mann

John P Whitlock

Minedys Macias Guzman

Eric G Wiesner

Hua Tan

Sean W Dobbins

Katrina Donovan

Jacob Tyler Wright

The present disclosure is drawn to a composite particulate build material, including 92 wt % to 99.5 wt % polymeric particles having an average size from 10 μm to 150 μm and an average aspect ratio of less than 2:1. The composite particulate build material further includes from 0.5 wt % to 8 wt % reinforcing particles having an average size of 0.1 μm to 20 μm and an average aspect ratio of 3:1 to 100:1 applied to surfaces of the polymeric particles, wherein the reinforcing particles include mica or glass.

Composite particulate build materials

An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a semi-crystalline thermoplastic polymer having a surface energy density greater than 41 mN/m. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline thermoplastic polymer in the at least the portion.

Three-dimensional printing

This disclosure relates to a material set including a build material for 3-D printing including particles of a polymer comprising polymer chains having at least one reactive group that is protected with a protecting group. The material set further includes an inkjet composition including a de-protecting agent for removal of the protecting group, and a liquid carrier.

3-D printing

The present disclosure is drawn to 3-dimensional printed parts that can include a conductive composite portion and an insulating portion. The conductive composite portion can include a matrix of fused thermoplastic polymer particles interlocked with a matrix of sintered elemental transition metal particles. The insulating portion can include a matrix of fused thermoplastic polymer particles that are continuous with the matrix of fused thermoplastic polymer particles in the conductive composite portion. The insulating portion can be substantially free of sintered elemental transition metal particles and can include transition metal oxide bronze particles.

3-dimensional printed parts

The present disclosure is drawn to a composite particulate build material, including 92 wt % to 99.5 wt % polymeric particles having an average size from 10 &#x3bc;m to 150 &#x3bc;m and an average aspect ratio of less than 2:1. The composite particulate build material further includes from 0.5 wt % to 8 wt % reinforcing particles having an average size of 0.1 &#x3bc;m to 20 &#x3bc;m and an average aspect ratio of 3:1 to 100:1 applied to a surface of the polymeric particles.

The present disclosure relates to a composition for printing a three-dimensional object. The composition comprises composite particles comprising a thermoplastic polymer and a colour-masking pigment. The colour-masking pigment is encapsulated by the thermoplastic polymer and is present in an amount of from about 1.5 to less than about 6 wt % of the total weight of the composite particles.

Compositions for printing

An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a semi-crystalline or amorphous thermoplastic polymer having a predicted total dimension change during 3D printing ranging from about &#x2212;4% to about 9%. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline or amorphous thermoplastic polymer in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber has absorption at wavelengths ranging from 800 nm to 4000 nm and has transparency at wavelengths ranging from 400 nm to 780 nm.

An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a thermoplastic elastomer having: an avalanche angle ranging from about 49 degrees to about 59 degrees; a break energy ranging from about 55 kJ/kg to about 78 kJ/kg; and an avalanche energy ranging from about 10 kJ/kg to about 27 kJ/kg. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the thermoplastic elastomer in the at least the portion.

An example of a three-dimensional (3D) printing composition includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes one of: (i) a thermoplastic elastomer having a flow parameter characterized by a consolidation resistance value ranging from about 8 to about 30, and a tap density characterized by an n1/2 value ranging from 5 taps to 30 taps; or (ii) a polyamide-like material having a flow parameter characterized by a consolidation resistance value ranging from about 75 to about 120, and a tap density characterized by an n1/2 value ranging from 5 taps to 30 taps. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the thermoplastic elastomer or the polyamide-like material in the at least the portion.

An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a polyamide having a melt enthalpy ranging from greater than 5 J/g to less than 150 J/g. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the polyamide in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber is a plasmonic resonance absorber having absorption at wavelengths ranging from 800 nm to 4000 nm and having transparency at wavelengths ranging from 400 nm to 780 nm.

The present disclosure is drawn to material sets and 3-dimensional printing systems that include a fusing agent. One example of a material set can include a fusing agent and a detailing agent. The fusing agent can include water, a carbon black pigment, and a water-soluble co-solvent in an amount from 20 wt % to 60 wt %. The detailing agent can include water and a black dye. In another example, a material set can include a fusing agent and a thermoplastic polymer powder.

Material sets

The present disclosure is drawn to material sets for 3-dimensional printing. The material set can include a thermoplastic polymer powder having an average particle size from 20 &#x3bc;m to 200 &#x3bc;m, a conductive fusing agent composition including a transition metal, and nonconductive fusing agent composition. The nonconductive fusing agent composition can include transition metal oxide bronze particles.

The present disclosure relates to a composition for printing a three-dimensional object. The composition comprises composite particles comprising a thermoplastic 5 polymer and a colour-masking pigment. The colour-masking pigment is encapsulated by the thermoplastic polymer and is present in an amount of from about 1.5 to less than about 6 wt % of the total weight of the composite particles.

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San Diego, CA, United States of America

Ali Emamjomeh