公开(公告)号：US11938681B2

公开(公告)日：2024-03-26

申请号：US15734594

申请日：2019-03-15

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

Inventor： Pol Fornos Martinez ,  Maria de las Mercedes Blanco Rollan ,  Ismael Fernandez Aymerich ,  Adam Franks

IPC: B29C64/393 ,  B29C64/165 ,  B33Y50/02 ,  B33Y10/00

CPC classification number: B29C64/393 ,  B29C64/165 ,  B33Y50/02 ,  B29K2995/0021 ,  B33Y10/00

Abstract: In one example a method of generating a three-dimensional object in a 3D printing system using a fusing agent of a first colour and a build material having a second colour different from the first colour, and a detailing agent, comprises obtaining object model data describing an object to be generated, and determining a first portion of the object to be generated to have the second colour. The method comprises determining object generation instructions to generate the object by defining a gap region of a layer of build material that is to correspond to the first portion of the object to have the second colour on which no agents are to be applied, a band of detailing agent on a layer of build material immediately adjacent to the gap region to define an outer limit of the gap region and therefore a boundary of the first portion of the object, and a fusing agent region on a layer of build material adjacent to the gap region on which fusing agent is to be applied.

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：US20230035587A1

公开(公告)日：2023-02-02

申请号：US17758093

申请日：2020-01-31

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

Inventor： Serigo Gonzalez Martin ,  Ismael Fernandez Aymerich ,  Manuel Freire Garcia

IPC: B29C64/393 ,  B33Y50/02 ,  B28B17/00 ,  B22F10/85

Abstract: Disclosed is a method that determines information associated with at least a portion of a build volume that comprises one or more 3D printed objects, and determines an amount of material to be applied to the build volume for use in annealing the one or more 3D printed objects of the build volume, on the basis of the information.

公开(公告)号：US20230027565A1

公开(公告)日：2023-01-26

申请号：US17757788

申请日：2020-01-16

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

Inventor： Serigo Gonzalez Martin ,  Manuel Freire Garcia ,  Ismael Fernandez Aymerich

IPC: B29C64/393

Abstract: In an example, a method includes obtaining a compensation model characterising a relationship between a location of an object within a fabrication chamber of an additive manufacturing apparatus and a geometrical compensation to be applied to a model of said object, wherein different geometrical compensation values are associated with different locations. In some examples the method further includes determining a magnitude of a dimension parameter of each object of a set of objects to be generated in a build operation. The method may include determining a spatial arrangement of objects to be generated within the build volume, based on the magnitude of the dimension parameters and the geometrical compensation values for an intended location of object generation in the spatial arrangement.

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.

公开(公告)号：US20220339876A1

公开(公告)日：2022-10-27

申请号：US17238358

申请日：2021-04-23

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

Inventor： Ismael Fernandez Aymerich ,  Cristina Dominguez Manchado ,  Roger Fadurdo Orellana ,  Manuel Freire Garcia

IPC: B29C64/386 ,  B33Y50/00 ,  G05B19/4099

Abstract: In some examples, a system receives information that represents a value of a physical property of a three-dimensional (3D) object as a function of a location of the 3D object built by an additive manufacturing machine. The system generates, based on the received information, a map that includes adjustment values corresponding to different locations of a layer of build material, the adjustment values when applied by the additive manufacturing machine to modify data representing a further 3D object to be built by the additive manufacturing machine.

公开(公告)号：US20220314551A1

公开(公告)日：2022-10-06

申请号：US17753449

申请日：2019-09-25

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

Inventor： Roger Fadurdo Orellana ,  Ismael Fernandez Aymerich ,  Pol Fornos Martinez ,  Manuel Freire Garcia ,  Salvador Sanchez Ribes

IPC: B29C64/393 ,  B29C64/255 ,  B29C64/153 ,  B29C64/205 ,  B33Y50/02 ,  B33Y30/00

Abstract: A non-transitory machine-readable storage medium is encoded with instructions executable by a processor. The machine-readable storage medium includes instructions to modify data representing a three-dimensional object model, the three-dimensional object model for use in generating a three-dimensional object in a build chamber. The data is modified to include a container to substantially encapsulate contents of the build chamber comprising the three-dimensional object and non-solidified build material. A wall of the container comprises heat transfer control elements to control dissipation of heat from the contents of the container.

公开(公告)号：US20220072801A1

公开(公告)日：2022-03-10

申请号：US17417962

申请日：2019-04-30

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

Inventor： Pol Fornos Martinez ,  Ismael Fernandez Aymerich ,  Arnau Codina Saborit

IPC: B29C64/393 ,  B33Y50/02

Abstract: In accordance with the disclosure, there is provided, a method. The method may comprise performing a printing operation to produce a part based on a predetermined fluid strategy. The method may further comprise assessing part data, related to the printed part, for any inaccuracies, based on a printing operation input. The method may further comprise adapting the fluid strategy for a next printing operation, based on any identified inaccuracies.

公开(公告)号：US20210331402A1

公开(公告)日：2021-10-28

申请号：US16605225

申请日：2018-06-28

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

Inventor： Ismael Fernandez Aymerich ,  Pol Fornos Martinez ,  Manuel Freire Garcia

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: An example method to control a 3D printing system is described. In that example a print agent is selectively deposited onto a portion of a build material layer and based on a reflectance of the portion of the build material layer, an amount of energy to be applied to the portion is determined.