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    APPLYING FUSING AGENT TO BUILD MATERIAL
    1.
    发明申请
    APPLYING FUSING AGENT TO BUILD MATERIAL 有权

    公开(公告)号：US20210354394A1

    公开(公告)日：2021-11-18

    申请号：US16605533

    申请日：2018-04-27

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

    Inventor： Pol Fornos Martinez ,  Lucas Saez-Benito ,  David Ramirez Muela

    IPC: B29C64/393 ,  B29C64/165 ,  B22F10/14 ,  B22F10/85 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

    Abstract: Example additive manufacturing apparatus is disclosed comprising a print agent distributor, and a controller to define print data for additive manufacture of a solid part of an object to be manufactured, wherein the print data is to cause a print agent distributor to apply fusing agent to portions of a layer of build material, wherein the print data is to cause a print agent distributor to apply fusing agent to portions of a layer of build material at a concentration based on a distance of each portion of build material from an edge of the object such that the print data causes the print agent distributor to apply fusing agent to portions of a layer of build material having a first range of distances at a first range of concentrations, apply fusing agent to portions of build material having a second range of distances at a second range of concentrations lower than the first range of concentrations, apply fusing agent to portions of build material having a third range of distances at the first range of concentrations and apply fusing agent to portions of build material having a fourth range of distances at the second range of concentrations, wherein the first range of distances is not adjacent to the third range of distances and the second range of distances is not adjacent to a fourth range of distances, and the first concentration is different to the second concentration, wherein the print agent distributor is to apply fusing agent to build material based on the print data.

    SEGMENTING OBJECT MODEL DATA AT FIRST AND SECOND RESOLUTIONS
    2.
    发明申请
    SEGMENTING OBJECT MODEL DATA AT FIRST AND SECOND RESOLUTIONS 有权

    公开(公告)号：US20210331403A1

    公开(公告)日：2021-10-28

    申请号：US16605585

    申请日：2018-04-27

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

    Inventor： David Ramirez Muela ,  Manuel Freire Garcia ,  Lluis Abello Rosello ,  Sergio Puigardeu Aramendia

    IPC: B29C64/393 ,  B29C64/118 ,  G06T7/10 ,  G06F30/10 ,  B33Y10/00 ,  B33Y50/02

    Abstract: An example method includes acquiring a model of an object to be generated in three-dimensional object generation which is segmented into a plurality of object model sub-volumes, each sub-volume representing a region of the object which is individually addressable in object generation. Object model sub-volumes within a first depth of an object model surface are defined at a first resolution and object model sub-volumes beyond the first depth are defined at a second resolution, and the first resolution is a higher resolution than the second resolution. An object generation model is applied to the object model to determine at least one predicted dimensional deviation of the object in object generation. A geometric adjustment to the segmented object model may be determined to compensate for the predicted dimensional deviation by adding and/or removing at least one object model sub-volume defined at the first resolution.

    TEMPERATURE CONTROL PRIOR TO FUSION
    4.
    发明申请
    TEMPERATURE CONTROL PRIOR TO FUSION 审中-公开

    公开(公告)号：US20190143586A1

    公开(公告)日：2019-05-16

    申请号：US16095189

    申请日：2016-05-12

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

    Inventor： Xavier Vilajosana ,  Alejandro Manuel De Pena ,  Sergio Puigardeu Aramendia ,  David Ramirez Muela ,  Luis Garcia

    IPC: B29C64/165 ,  B29C64/386

    Abstract: In an example, a method includes measuring the temperature of a fused region and the temperature of an unfused region of a first layer of build material; determining a preheating setting for a subsequent layer of build material in response to the measured temperature of the unfused region of the first layer; determining a print instruction for applying print agent to the subsequent layer of build material, wherein the application of print agent prescribed by the print instruction for the subsequent layer to cause the temperature of the preheated build material to be a predetermined temperature prior to fusion in response to the measured temperature of the fused region of the first layer; forming the subsequent layer of build material; preheating the subsequent layer of build material in accordance with the preheating setting; and selectively applying the print agent onto the subsequent layer based on the print instruction.

    3D part control using multiple pass liquid delivery
    10.
    发明授权
    3D part control using multiple pass liquid delivery 有权

    公开(公告)号：US11225014B2

    公开(公告)日：2022-01-18

    申请号：US16094437

    申请日：2016-05-12

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

    Inventor： Sergio Puigardeu Aramendia ,  David Ramirez Muela ,  Pol Fornos

    IPC: B29C64/165 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/245 ,  B29C64/209 ,  B33Y30/00

    Abstract: According to an example, a 3D printer may include a delivery device and a controller. The controller may access a morphology of a part to be formed from a plurality of build materials in a layer, determine, based upon the accessed morphology, a first delivery pattern for the delivery device to selectively deliver liquid droplets onto build materials in the layer during a first pass over the layer and a second delivery pattern for the delivery device to selectively deliver liquid droplets onto build materials in the layer during a second pass over the layer to control a property of the part formed of some of the build materials in the layer. The controller may also control the delivery device to selectively deliver liquid droplets onto build materials in the layer according to the determined first and second delivery patterns respectively during the first pass and the second pass.

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