Hewlett-packard Development Company, L.p.

Shell Oil Comapny

Eveready Battery Company, Inc.

Peridot Print LLC

Apple Inc.

Intelligent Energy Inc.

David A Champion

Gregory Scott Herman

Peter Mardilovich

James O'Neil

Vladek P Kasperchik

James Elmer Abbott, Jr

James McKinnell

Mohammed Saad Shaarawi

Christopher C Beatty

Greg Scott Long

James P Shields

Daniel A Kearl

Richard W Seaver

John Liebeskind

Douglas Pederson

Daniel Mosher

Andrew L Van Brocklin

Pavel Kornilovich

Randy Hoffman

James William Stasiak

Michael A Pate

Raymond J Adamic

Tony S Cruz-Uribe

Michael G Monroe

Kevin Francis Peters

Diane R Hammerstad

Fernando Juan

Richard Budd Peterson

Cary G Addington

Dennis M Lazaroff

Niranjan Thirukkovalur

Donald J Coulman

Chris Paul Schodin

Pavan Suri

Adriaan Spierings

Thomas Bauer

Alexander N Govyadinov

Jun Zeng

David Ridgway Otis, Jr

Kevin E Swier

Joseph W Tsang

David M Schut

Stephan R Clark

Neal W Meyer

Benjamin L Clark

Sergio Gonzalez Martin

Chinmay Suresh Betrabet

Philip H Harding

Jennifer Wu

Jordi Roca Vila

James E Ellenson

Hubert A Vander Plas

Carles Flotats Villagrasa

Ted W Barnes

Jordi Ferran Cases

Anton Nicholas Clarkson

Jonald R Gradwohl

Oscar Martinez Bailac

David L Neiman

Brian Bay

Gregory Herman

Daniel Kearl

James O'Neill

Jr Otis

James Mckinnell

Jr James Elmer Abbott

James Elmer Abbott

A three-dimensional (3D) object printing kit includes a polymeric material; a fusing agent including at least 5 vol % of a polar solvent; and a detailing agent. The detailing agent includes a non-polar, hydrophobic substance selected from the group consisting of a non-polar, hydrophobic liquid in its liquid state at a temperature ranging from about −80° C. to about 40° C., and a non-polar, hydrophobic wax having a melting temperature less than 120° C.

Three-dimensional printing

In a three-dimensional printing method example, a liquid functional agent is selectively applied. The liquid functional agent includes an alloying agent. A metallic build material is applied. The liquid functional agent is selectively applied before the metallic build material, after the metallic build material, or both before and after the metallic build material. The liquid functional agent patterns the metallic build material to form a composite layer. At least some of the metallic build material is exposed to energy to melt the at least some of the metallic build material to form a layer. Upon contact or after energy exposure, the alloying agent and the build material alter a composition of the composite layer.

Three-dimensional (3D) printing

In one example, a processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to vary operating characteristics of a fusing laser beam at multiple different voxel locations in a layer of build material according to an energy dosage to be applied at each voxel location in an object slice, including multiple different energy dosages for corresponding multiple different voxel locations in the slice.

Energy dosing for additive manufacturing

An apparatus is disclosed to create a breakaway junction for 3D printed parts. Powder is spread along a target zone, such as a build bed. A liquid functional agent is selectively dispensed upon the powder to form a 3D object, a supporting part, and the breakaway junction between them.

Creating a breakaway region

According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to determine physical characteristics of a build layer of build material particles. The instructions may also cause the processor to determine an adjustment to forming data based on the determined physical characteristics, the forming data to be used informing a subsequent build layer. The instructions may further cause the processor to apply the determined adjustment to the forming data for use in forming the subsequent build layer, in which portions of a three-dimensional (3D) object are to be formed in the build layer and the subsequent build layer.

Adjustments to forming data for forming a build layer

In some examples, a controller receives measurement data responsive to operation of a vibrated spreader for use in dispensing a build material onto a target surface, and controls a frequency of a vibration of the spreader based on the measurement data.

Frequency control of spreader vibrations

According to examples, an apparatus may include an agent delivery device to deliver a coalescing agent to selected locations of a build material layer and a plurality of microwave energy emitters, each of the microwave energy emitters including a tip to generate a focused microwave energy field onto a respective area near the tip, in which the tip is to be positioned to place a portion of the build material layer within the focused microwave energy field. The apparatus may also include a controller that may control the microwave energy emitters to direct microwave energy onto the build material layer.

Microwave energy emitters with tips

An example sinter system includes a sinter gas inlet at a sinter furnace for a sinter gas, a tracer gas inlet at the sinter furnace for a tracer gas different from the sinter gas, and an outlet at the sinter furnace to output the sinter gas and the tracer gas. The example sinter system further includes: a support structure to support a sample green object in the sinter furnace, an opening at the support structure connected to the tracer gas inlet, the opening to output the tracer gas into the sinter furnace, and a detector to: determine an amount of the tracer gas flowing through the outlet during a sinter process as a sample green object positioned on the support structure changes shape during the sinter process with respect to the opening and modifies a flow rate of the tracer gas to the outlet; and determine when to stop the sinter process based on a determined amount of the tracer gas.

Tracer gas endpoint-monitored sinter systems

In an example implementation, a sintering system includes a support structure in a sintering furnace to support a token green object during a sintering process. The system includes wires installed into the furnace and through the support structure to contact the object. An impedance meter is operatively coupled to the wires to determine electrical impedance of the object during the sintering process.

Electrical measurement of a green object during sintering

In an example implementation, a sintering system includes a detection gas line to enable gas to flow into a sintering furnace from an external gas supply. The system includes a detection gas port inside the furnace through which gas from the detection gas line is to flow into the furnace, and a registration feature inside the furnace to enable positioning of a token green object proximate the gas detection port. The system includes a gas flow monitor to detect changes in gas flow through the detection gas line when the token green object shrinks during a sintering process in the furnace.

Sintering furnace

Printers are disclosed. An example printer includes a build controller to access metrics of a layer on a work area and to select a dosing profile from a plurality of dosing profiles to fuse the layer based on the metrics.

Printers

Techniques for using a pin array to support a 3D printed object during sintering are disclosed. An example method includes adjusting pins of a pin array to provide support for a bottom surface of the 3D printed object, and placing the 3D printed object on the pin array. The method also includes placing the 3D printed object and pin array in a sintering oven, and heating the 3D printed object in the sintering oven to sinter the 3D printed object while being supported by the pin array.

Pin array sintering supports

In example implementations, a method for extracting layers of build material into a carrier. The method includes providing a layer of build material onto a bed. Portions of the layer of build material on the bed are digitally printed with a liquid functional material (LFM). The method repeats providing the layer of build material and digitally printing without applying energy to the LFM to define a structure in layers of build material on the bed. The layers of build material are extracted into a carrier and the carrier is removed.

Extraction of digitally printed build material

In an example implementation, a sintering system includes optical fiber installed into a sintering furnace. A support structure inside the furnace is to support a token green object in a predetermined position and to hold a distal end of the fiber adjacent to the predetermined position. A light source is operably engaged at a proximal end of the fiber to transmit light through the fiber into the furnace. A light detector is operably engaged at the proximal end of the fiber to receive reflected light through the fiber that scatters off a surface of the token green object.

Transmitting and detecting light with optical fiber during sintering

In example implementations, an apparatus includes a housing, a movable base, a tab portion and a coupling mechanism. The housing is comprised of a microwave transparent material. The movable base is coupled to the housing to receive build material that is digitally printed. The tab portion is coupled to a bottom portion of at least one wall of the housing. The tab portion stops the movable base. The coupling mechanism is coupled to the housing to removably attach the apparatus to a three dimensional printer.

Removable cassette for 3D printers

Growing community of inventors

Lebanon, OR, United States of America

David A Champion