Hewlett-packard Development Company, L.p.

Pablo Antonio Murciego Rodriguez

David Chanclon Fernandez

Jorge Diosdado Borrego

Esteve Comas Cespedes

Vladek P Kasperchik

Alexey S Kabalnov

Rhys Mansell

Ignacio Alejandre Fernandez

Sergi Rosell Bochaca

Disclosed is a sealing member for a build unit of a 3D printing system, the build unit comprising a surface which is exposed to residual build material in use. The sealing member is adapted to engage with the build unit and form therewith a sealed fluid flow path comprising an inner surface including said surface, a fluid inlet and a fluid outlet.

Forming a sealed fluid flow path

In one example, a process for loading a build material powder supply container for 3D printing includes, with a floor of the supply container at or near a top of the supply container, dispensing build material powder into a loading chamber surrounding the top of the supply container and on to the floor, compacting powder in the loading chamber, and lowering the floor with the compacted powder into the supply container.

Loading build material powder with a vibrating compactor for a 3D printer

In one example a system is for post-processing a three-dimensional (3D) object generated in an additive manufacturing process in which an identifiable agent is applied to a portion of a build material to form a portion of the 3D object. The system comprises an identification unit and a sensor. The identification unit is to cause the identifiable agent to become distinguishable to thereby cause the portion of the 3D object, corresponding to the portion of build material to which the identifiable agent was applied, to be distinguishable from any build material remnant disposed on the 3D object and to which no identifiable agent was applied. The sensor is to distinguish the build material remnant from the portion of the 3D object.

Post-processing in additive manufacturing

In one example, a system for loading a build material powder supply container for 3D printing includes a dispenser to dispense a build material powder into a supply container, a device to measure a density of the build material powder in the supply container, a compactor to compact the build material powder in the supply container, and a controller operatively connected to the measuring device and the compactor. The controller is programmed to control the compactor to compact the build material powder in the supply container until a measured density reaches a threshold density.

Loading build material powder for a 3D printer

In one example in accordance with the present disclosure, a build material volume transportation device is described. The build material volume transportation device includes a shuttle to transport a build material volume. The shuttle includes an opening therethrough to receive the build material volume. The build material volume transportation device also includes a build tray to raise the build volume into the opening in the shuttle. The build material volume transportation device further includes a latch assembly to releasably secure the build tray to the shuttle. A tip of the latch assembly extends to interface with the aperture to secure the build tray to the shuttle. The tip rotates independently of the piston.

Build material transportation with rotational latch

In one example, a system for loading build material into a portable build unit having a platform on which objects are printed and a build material supply container next to the platform. The system includes a build material dispenser, a conveyor to move the build unit and/or the dispenser, and a controller operatively connected to the dispenser and the conveyor. The controller is programmed to, with the build unit and the dispenser in a fill position, cause the dispenser to dispense build material into the supply container, cause the conveyor to move the build unit and/or the dispenser to and/or from the fill position, and, while the conveyor moves the build unit and/or the dispenser to and/or from the fill position, cause the dispenser to dispense build material on to the platform.

Loading build material for a 3D printer

A method of changing the gas content of a device () which comprises a first chamber (). The method comprises: arranging the device in a first configuration, wherein the first chamber has a first internal volume; providing a flow of a first gas to the first chamber so that the gas content of the first chamber is at least partially changed; transitioning the device from the first configuration to a second configuration, wherein the first chamber has a second internal volume which is grater than the first internal volume.

Changing the gas content of a device

According to one example, there is provided a method of controlling a three-dimensional printing system, comprising obtaining data relating to a three-dimensional object to be generated, controlling a set of process modules to move around a path in a single direction over a build chamber to selectively perform a respective process action on the build platform to generate a three-dimensional object therein.

Growing community of inventors

Sant Cugat del Valles, Spain

Pablo Antonio Murciego Rodriguez