Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Other

Hector Jose Lebron

Matthew Allen Shepherd

Jake Wright

Vanessa Verzwyvelt

Morgan Thomas Schramm

Stephen G Rudisill

Alexey S Kabalnov

Jesiska Tandy

Paul Crivelli

Scott W Hock

Wesley R Schalk

Shannon Reuben Woodruff

Ali Emamjomeh

Arthur H Barnes

Yi Feng

Thomas Michael Sabo

Raffaella Fior

Juan A Marrero Cosme

Vladek P Kasperchik

Lihua Zhao

Antoni S Murcia

Dustin W Blair

Jacob Wright

Carolin Fleischmann

Alay Yemane

James A Feinn

Clayton L Holstun

Eric Joseph Johnson

Andrew E Fitzhugh

Melinda M Valencia

Salvador Sanchez Ribes

Kelvin J Hasseler

Emilio Carlos Cano

Xin Cheng

Kenneth A Diest

Juan J Hernandez

Steven Michael Krause

Jose Angel De La Rosa

Minh Chu

Luis E Rodriguez

Juan A Marrero

Eladia Velez

Spencer C Anderson

Anders T Peterson

Joshua Joel Cantrell

Joshua Cantrell

Anders Peterson

In an example, a method include receiving a data model of an object to be generated in additive manufacturing at a processor, the data model comprising object property data. A segmentation of a virtual build volume comprising at least a portion of the object into a plurality of nested segments may be derived. A first segment may be associated with first object generation parameters and a second segment may be associated with second, different, object generation parameters. A number of nested segments to be derived may be determined based on at least one of a geometry of the object and an intended object property.

Nested segments in object models for additive manufacturing

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

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 shipping and handling fluid for a three-dimensional (3D) printer is disclosed. The shipping and handling fluid includes a co-solvent, a first sugar alcohol, a second sugar alcohol, a surfactant, and a balance of water. The first sugar alcohol includes a ring structure, and the second sugar alcohol has a linear structure.

Shipping and handling fluid for a three-dimensional printer

In an example, a method includes receiving object model data describing at least a portion of an object to be generated by additive manufacturing. Object generation instructions for generating the object in its entirety may be derived based on the object model data. Where it is determined that the object model data comprises a data deficiency for deriving the object generation instructions, at least one attribute for the object may be inferred and object generation instructions may be derived based on the object model data and the inferred attribute.

Inferring object attributes

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.

A printing method includes selecting an inkjet ink including a pigment, and selecting an active agent, including an electromagnetic radiation-absorbing active material, and an aqueous or non-aqueous vehicle. The method further includes inkjet printing the inkjet ink and the active agent directly onto a textile fabric. The textile fabric having the ink and active agent thereon is exposed to electromagnetic radiation.

Textile printing with inkjet inks

In an example a method includes identifying, by a processor, in a data model of at least a portion of a three-dimensional object, an object property associated with a location in the three-dimensional object. A data model of a virtual build volume comprising at least a portion of the three-dimensional object may be generated in which an association with an object property is dispersed beyond the location.

Transforming object data models to disperse object properties

In an example, a method includes receiving, at a processor, a data model of an object to be generated in additive manufacturing. A virtual build volume comprising a representation of at least a portion of the object may be segmented into a plurality of nested segments comprising a core segment and a peripheral segment. Segmenting the virtual build volume may comprise determining a dimension of the peripheral segment based on at least one of a geometry of the object and an intended object property.

In an example, a method includes forming a layer of build material, processing a first portion of the build material by distributing a print agent using a first distribution pattern, the first distribution pattern having a first print agent dispersion characteristic and processing a second portion of the build material by distributing a print agent using a second distribution pattern, the second distribution pattern having a second print agent dispersion characteristic. The method may further include heating the build material by exposing the layer of build material to radiation so as to cause fusing of the first and second portion.

Determining distribution patterns for object portions

In an example, a virtual build volume comprising a representation of at least a part of an object to be generated in additive manufacturing is segmented into a plurality of nested segments comprising a core segment, an inner peripheral segment and an outer peripheral segment. Additive manufacturing control instructions may be generated for the nested segments. The control instructions for the core segment may provide a first region of the object corresponding to the core segment and having a first color. The control instructions for the outer peripheral segment may provide a second color for a second region of the object corresponding to the outer peripheral segment. The control instructions for the inner peripheral segment may provide a third color for a third region of the object corresponding to the inner peripheral segment, wherein a color of the third region is determined so as to at least partially visually mask the first region.

Segments in virtual build volumes

In an example implementation, a method of reducing inkjet aerosol in a fluid drop ejection system includes imaging fluid drops from an ejection event as the drops travel from an ejection nozzle toward a substrate, determining the momentum of each fluid drop from the imaging, comparing the momentum of each fluid drop with a threshold momentum, and determining that a fluid drop will become aerosol when its momentum does not exceed the threshold momentum.

Reducing inkjet aerosol

In an example, a method includes providing a build material. Print agent comprising colorant may be applied to a first portion of the build material to be fused in additive manufacturing, wherein the print agent is applied according to a target color for the first portion. A combination of a fusion inhibiting agent and colorant may be applied to a second portion of the build material, wherein the print agent is applied according to the target color of the first portion and the second portion is adjacent to the first portion. The method may further include heating the build material by exposing the build material to radiation so as to cause fusing of the first portion.

Fusion inhibiting agents with colorants

In an example implementation, a method of printing a three-dimensional (3D) object includes, applying a layer of build powder onto a printing platform and depositing a deliberate micropattern of liquid agent onto the powder within a macropattern that defines a cross-section of a 3D object to be printed. The method includes forming a microstructure from the deliberate micropattern by applying fusing energy to the powder, the microstructure comprising fused areas and sintered areas between the fused areas.

Forming microstructures in 3D printing by fusing and sintering using a fusing agent

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Houston, TX, United States of America

Hector Jose Lebron