Hewlett-packard Development Company, L.p.

James R Owen

Kevin E Swier

Brad Benson

Zhang-Lin Zhou

Wesley R Schalk

Qin Liu

David Ridgway Otis, Jr

Gregg Combs

David R Otis

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

According to one aspect, there is provided a method of adding build material to a rotatable 3D printing build material container having an internal build material storage reservoir, the method comprising: providing a supply of build material to an input port of the container; rotating the container about its rotation axis at a first speed sufficient to cause build material within the container to be centrifugally forced against the outside of the internal storage reservoir.

Adding build material to a build material container

In one example, a liquid-gas separator includes a composite membrane to pass a gas but not a liquid at a first pressure difference across the membrane and to block the gas passing back through the membrane at a second pressure difference smaller than the first pressure difference.

Liquid-gas separator

A compound is disclosed. The compound has the general structure: wherein Y is selected from the group consisting of hydrocarbons, hydrocarbons including nitrogen in the carbon backbone, and hydrocarbons including oxygen in the carbon backbone; wherein Rand Rare each independently selected from the group consisting of hydrogen, linear hydrocarbons, branched hydrocarbons, and cyclic hydrocarbons and wherein Rand Rare not both hydrogen; wherein X is selected from the group consisting of CH, O, N&#x2014;R, S, and nothing and wherein Ris selected from the group consisting of hydrogen, branched hydrocarbons, linear hydrocarbons, and cyclic hydrocarbons; wherein m is an integer between 1 and 50, inclusive; wherein n is an integer between 1 and 10,000, inclusive; and wherein p, q, and z are each independently an integer greater than 0.

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Salem, OR, United States of America

James R Owen