公开(公告)号：US20200324489A1

公开(公告)日：2020-10-15

申请号：US16759921

申请日：2017-12-06

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

Inventor： Pol FORNOS ,  David RAMIREZ MUELA ,  Sergio PUIGARDEU ARAMENDIA

IPC: B29C64/40 ,  B29C64/393 ,  B33Y40/20 ,  B33Y50/02 ,  B33Y10/00 ,  B29C64/153

Abstract: In an example, a method includes in an additive manufacturing process, generating a first object and generating an ancillary object on top of the first object to reduce a thermal gradient of the first object during cooling.

公开(公告)号：US20190168458A1

公开(公告)日：2019-06-06

申请号：US16092731

申请日：2016-05-12

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

Inventor： Sergio PUIGARDEU ARAMENDIA ,  David RAMIREZ MUELA ,  Luis GARCIA GARCIA

IPC: B29C64/393

Abstract: According to an example, a three-dimensional (3D) printer may include a delivery device to selectively deliver liquid droplets onto a layer of build materials and a controller to determine a preselected area on the layer of build materials at which the delivery device is to deliver liquid droplets, to determine a distribution at which gaps are to be formed in the delivery of the liquid droplets within the preselected area, and to control the delivery device to deliver the liquid droplets across the preselected area while forming the gaps at the determined distribution, in which the gaps are to form heat sinks in the build materials that are to prevent heat spikes from occurring across the build materials in the preselected area.

公开(公告)号：US20170297265A1

公开(公告)日：2017-10-19

申请号：US15513457

申请日：2014-10-03

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

Inventor： Pol MARTINEZ FORNOS ,  Sergio PUIGARDEU ARAMENDIA ,  David RAMIREZ MUELA ,  Salvador SANCHEZ RIBES

IPC: B29C64/393 ,  B29C64/10 ,  B29C64/264 ,  B33Y50/02 ,  B33Y30/00 ,  B29C35/02 ,  B33Y10/00

Abstract: A method of controlling temperature in an apparatus for generating a three-dimensional object comprises performing a calibration test on a sample of build material that is to be used in generating a three-dimensional object, calibrating at least one temperature point from the calibration test, and using the at least one calibrated temperature point during subsequent temperature control of the apparatus.

公开(公告)号：US20230311420A1

公开(公告)日：2023-10-05

申请号：US18018816

申请日：2020-07-30

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

Inventor： Ferran ESQUIUS BERENGUERAS ,  Esteve COMAS CESPEDES ,  Jordi BAUTISTA BALLESTER ,  David RAMIREZ MUELA ,  Xavier SOLER PEDEMONTE

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/291 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/393 ,  B29C64/165 ,  B29C64/291 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29K2075/00

Abstract: A 3D printer is disclosed herein. The 3D printer comprises a build material distributor to generate layers of a build material having a right limit temperature of the build material crystallization curve higher than a left limit temperature of the build material fusing curve. The 3D printer also comprises an agent distributor to selectively deposit an energy absorbent fusing agent to a layer of build material; an energy source to emit energy at a set of wavelengths comprised in the range of 430 to 1200 nm; and a controller. The controller is to receive print job data of a 3D object to be generated; control the build material distributor to generate a layer of build material; control the agent distributor to selectively deposit the fusing agent based on the print job data; and to control the energy source to emit energy to the layer of build material to cause build material on which the fusing agent was deposited to melt, coalesce and then solidify upon cooling.

公开(公告)号：US20180133957A1

公开(公告)日：2018-05-17

申请号：US15565871

申请日：2015-07-30

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

Inventor： David RAMIREZ MUELA ,  Lihua ZHAO ,  Alejandro Manuel DE PENA

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/20

CPC classification number: B29C64/165 ,  B22F3/1055 ,  B22F2003/1056 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00 ,  Y02P10/295

Abstract: Apparatus to produce a three-dimensional object and methods of producing a three-dimensional object are described. In some examples, a first fluid comprising a colorant and a second fluid comprising an absorber to absorb electromagnetic radiation are applied on a layer of particulate material. Application of the second fluid to the layer of particulate material is in dependence on an ability of the first fluid to absorb the electromagnetic radiation.

公开(公告)号：US20220332053A1

公开(公告)日：2022-10-20

申请号：US17634868

申请日：2019-08-28

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

Inventor： Pol FORNOS MARTINEZ ,  David RAMIREZ MUELA ,  Ismael FERNANDEZ AYMERICH

IPC: B29C64/393 ,  G06F3/12 ,  B29C64/165 ,  B29C64/264

Abstract: Disclosed are systems, control mechanisms and methods that apply different printer control fluid parameters when forming internal and external features of a three-dimensional object within an additive manufacturing system. The identification of internal and external features may involve analysing an object model, comprising data describing the object to be manufactured, to identify all edges of a three-dimensional object and determining which of the edges are internal edges and which are external edges of the object. A control fluid strategy can be optimised for different object feature types, to improve mechanical properties of the final object and/or reduce usage of detailing agent.

公开(公告)号：US20210299968A1

公开(公告)日：2021-09-30

申请号：US17267400

申请日：2018-10-09

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

Inventor： David RAMIREZ MUELA ,  Manuel FREIRE GARCIA

IPC: B29C64/393 ,  B29C64/295 ,  G06F30/17 ,  B29C64/153

Abstract: In an example, object model data representing at least a portion of an object defining an initial object geometry is received, wherein the object is to be generated by an additive manufacturing apparatus by fusing build material using a radiant heater. Based on a non-uniform radiant heating distribution of the additive manufacturing apparatus, a modified object geometry may be determined, wherein a local modification of the object geometry is determined based on a local radiant heating parameter determined from the non-uniform radiant heating distribution.