公开(公告)号：US20210331414A1

公开(公告)日：2021-10-28

申请号：US16608248

申请日：2018-07-26

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Luis Garcia Garcia ,  Alejandro Manuel de Pena Hempel ,  Ismael Fernandez Aymerich

IPC: B29C64/393 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: In an example, an additive manufacturing device comprises a sensor, a moveable radiation source and a controller. The controller may determine an output of the sensor at a point at which build material melts by causing the moveable radiation source to periodically move over a layer of the build material to provide radiation to the layer of build material and monitoring the output of the sensor.

公开(公告)号：US20230060712A1

公开(公告)日：2023-03-02

申请号：US17758092

申请日：2020-01-31

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Pol Fornos Martinez ,  Xavier Espert Canet ,  Ismael Fernandez Aymerich ,  Roger Fadurdo Orellana ,  Pol llopat Mirambell ,  Marc Borras Camarasa ,  Alejandro Manuel de Pena Hempel ,  Pablo Dominguez Pastor

IPC: B29C64/393 ,  B29C64/165

Abstract: A 3D printer is controlled to apply a print agent at a plurality of predetermined locations in a build chamber of the 3D printer, and energy is applied to heat the build chamber. A thermal image of the build chamber is received. Based on the thermal image, an error in application of the print agent in the build chamber is determined.

公开(公告)号：US20240066802A1

公开(公告)日：2024-02-29

申请号：US17823767

申请日：2022-08-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Sergio Gonzalez Martin ,  Manuel Freire Garcia ,  Alejandro Manuel de Pena Hempel ,  Ismael Fernandez Aymerich

IPC: B29C64/393 ,  B33Y50/02

CPC classification number: B29C64/393 ,  B33Y50/02 ,  B29C64/165

Abstract: In some examples, a system receives measurement data from measurements of first three-dimensional (3D) parts formed on a build bed of an additive manufacturing machine with different contone levels of a liquid agent, and determines, based on the measurement data, geometrical deviations of the first 3D parts from a baseline geometrical property. The system generates, based on the determined geometrical deviations, a model that correlates contone levels of the liquid agent to corresponding geometrical deviations, the model for use in an adjustment of the liquid agent based on a contone level adjustment to compensate for a geometrical deviation when building second 3D parts with the additive manufacturing machine or another additive manufacturing machine.

公开(公告)号：US20220402224A1

公开(公告)日：2022-12-22

申请号：US17772475

申请日：2019-10-29

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Alejandro Manuel de Pena Hempel ,  Pol Fornos Martinez ,  Ismael Fernandez Aymerich

IPC: B29C71/02 ,  B29C64/393 ,  B33Y30/00 ,  B33Y40/20

Abstract: There are disclosed methods and devices for build temperature control. In some examples, a method comprises applying a temperature controllable top cover over a top of the build volume. The method may further comprise controlling the temperature controllable top cover to maintain a temperature substantially equal to a build temperature for a predetermined period of time. The method may further comprise applying a thermally conductive bottom cover to a bottom of the build volume.