Hewlett-Packard Development Company, L.p.

Marius Valles

Pau Martin Vidal

Fernando Juan

Anna Torrent

Jordi Gimenez Manent

Jose Manuel Grases

Joan Mach

Francisco Jaime

Rafel Texido

Miguel Angel Lopez

Pau Martin

Francesc Salas Roura

Albert Mora Murciano

Carlos Perez

Guillermo Garcia Marcos

A method of calibrating movement of a platform is described, the method comprising: in a calibration run, causing movement of the platform; detecting a plurality of positions of the platform during the movement; deriving a movement pattern from the plurality of positions; and determining an adjustment of the movement of the platform based on the movement pattern.

Calibration method and build unit

In example implementations, an apparatus includes a build platform and a cap. The build platform has an opening on a top surface to fill a build material storage unit. The cap is inserted into the opening to seal the opening. A top surface of the cap and the top surface of the build platform have a uniform thermal conductivity when the cap is inserted into the opening.

3D build platform refill opening and cap

There is disclosed a build material supply unit, comprising: a supply chamber body enclosing a supply volume to contain a build material for additive manufacture; an electromagnetic distance sensor to determine a length parameter relating to a length of a beam pathway extending from an emitter of the sensor to a surface level of build material in the supply volume; and a reflector to reflect the beam pathway between the emitter and the surface level of build material; wherein the reflector is spaced apart from the emitter.

Build material supply unit with distance sensor

According to one example there is provided a method of delivering build material from a build material store to a supply module. The method comprises moving, using a rotatable vane, a portion of build material from the supply module to the top of the supply module, and spreading the moved portion of build material across the support platform.

Supplying build material

A method of delivering build material from a build material store () to a supply module (). The method comprises moving, using a rotatable vane (), a portion of build material from the supply module () to the top of the supply module (), and spreading the moved portion of build material across the support platform ().

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Barcelona, Spain

Marius Valles