Hewlett-Packard Development Company, L.p.

Xin Cheng

Morgan Thomas Schramm

Vanessa Verzwyvelt

Matthew Allen Shepherd

Arthur H Barnes

Jake Wright

Miguel Angel Lopez Alvarez

Tao Chen

Wesley R Schalk

Jay Stephen Gondek

Eric Lee Burch

Hector Jose Lebron

Jacob Wright

Silke Courtenay

David P Rossing

Michael Crockett

Westley R Schalk

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, may cause the processor to identify a property of a portion of a three-dimensional (3D) part to be fabricated and determine, based on the identified property, a thermal value associated with the portion. The instructions may also cause the processor to, based on the determined thermal value, determine a first agent composition to be used to fabricate the portion and determine a second agent composition to be used to fabricate a section external and adjacent to the portion, in which the first agent composition and the second agent composition may be determined to cause the portion and the external section to be fabricated to have the identified property while maintaining the external section separate from the portion.

Agent composition determination based on thermal values

A system determines an object part density relative to a build region in a layer of build material used in an additive manufacturing machine, the object part density based on a relative portion of the build region where an energy absorbing agent is applied. The system controls a thermal characteristic of the build region in the layer of build material based on the determined object part density.

Thermal characteristic control in a build material

In some examples, with respect to three-dimensional printer color management, three-dimensional printer native space coordinates of a three-dimensional printer may be mapped to three-dimensional printer printing agent space coordinates of the three-dimensional printer. The three-dimensional printer printing agent space coordinates may be mapped to color space coordinates. The color space coordinates may be mapped to two-dimensional printer printing agent space coordinates of a two-dimensional printer. The two-dimensional printer printing agent space coordinates may be mapped to two-dimensional printer native space coordinates of the two-dimensional printer. A color management protocol of the two-dimensional printer may be utilized, based on the mapping of the three-dimensional printer native space coordinates to the two-dimensional printer native space coordinates, for the three-dimensional printer to print a three-dimensional object.

Three-dimensional printer color management

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.

Nested segments in object models for additive manufacturing

In one example, a control process for an additive manufacturing machine includes displacing a platform, measuring the actual displacement of the platform, determining that the actual displacement varies from a nominal displacement, and determining an amount of an agent to be applied to build material layered on the displaced platform based on the determined variation.

Applying an additive manufacturing agent based on actual platform displacement

An ink receiving substrate includes a base substrate, and an ink receptive coating formed on the base substrate. The ink receptive coating includes a binder and a fumed silica and alumina dispersion, wherein the fumed silica and alumina dispersion includes between 5 and 30% alumina particles.

Inkjet recording media

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Vancouver, WA, United States of America

Xin Cheng