公开(公告)号：US10981333B2

公开(公告)日：2021-04-20

申请号：US16089997

申请日：2016-04-26

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

Inventor： Lluis Hierro Domenech ,  Esteve Comas ,  Sergi Culubret

IPC: B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/165 ,  B22F10/10

Abstract: In an example, a method includes forming a layer of build material and selectively applying fusing agent on to the layer based on a predetermined pattern. Energy may be applied to the layer of build material, and at least one temperature of the layer may be measured. A temperature distribution over the layer of build material may be determined, the temperature distribution indicating, for each of a plurality of locations on the layer of build material, whether fusing agent is present at that location. At least one characteristic derived from the temperature distribution may be compared to a predetermined characteristic. When the compared characteristics differ, an operational characteristic of an additive manufacturing apparatus may be adjusted.

公开(公告)号：US10449722B2

公开(公告)日：2019-10-22

申请号：US15540921

申请日：2015-01-30

Applicant: Hewlett-Packard Development Company, L.P. ,  Santiago Sanz Ananos ,  Isabel Sanz Ananos ,  Sergi Culubret

Inventor： Santiago Sanz Ananos ,  Isabel Sanz Ananos ,  Sergi Culubret

IPC: B29C64/393 ,  B33Y30/00 ,  B29C64/165 ,  B29C64/20 ,  B33Y10/00 ,  B33Y50/02

Abstract: A method of fabricating a three dimensional object is provided. A build layer comprising an area of solidified build material and an area of non-solidified build material is formed. The build layer is formed by depositing a layer of non-solidified build material and treating the build material to form the area of solidified build material. The method also involves determining an edge profile for the build layer. Determining the edge profile involves measuring a variation in height of the build layer across a transition between the area of solidified build material and the area of non-solidified build material.

公开(公告)号：US20190134912A1

公开(公告)日：2019-05-09

申请号：US16095797

申请日：2016-07-05

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

Inventor： Fernando Juan ,  Sergi Culubret ,  Marius Valles ,  Gerard Mosquera

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

Abstract: Methods and devices for setting a printing distance in a 3D printing system are disclosed. In one example the method comprises forming a layer of build material below a printing plane and relatively displacing the formed layer of build material with respect to the printing plane until the distance between the formed layer of build material and the printing plane is a desired printing distance.

公开(公告)号：US20180186075A1

公开(公告)日：2018-07-05

申请号：US15565332

申请日：2016-01-29

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

Inventor： Lluis Hierro Domenech ,  Sergi Culubret ,  Esteve Comas

IPC: B29C64/286 ,  G02B5/20 ,  B29C64/165 ,  B33Y30/00

CPC classification number: G02B26/004 ,  B29C64/165 ,  B29C64/286 ,  B29K2995/002 ,  B33Y30/00 ,  B33Y70/00 ,  G01J3/10 ,  G01J3/108 ,  G02B5/208 ,  G02B5/24

Abstract: In one example of the disclosure, a system for limitation of energy wavelengths applied during 3D printing includes an energy source to provide energy to a target zone during a 3D printing operation. The system includes a filter chamber through which the energy is to pass before arriving at the target zone. The system includes a filter chamber control component to selectively modify the contents of the filter chamber to limit the wavelengths of energy that can pass through the filter chamber based upon type of the target zone.

公开(公告)号：US20180050493A1

公开(公告)日：2018-02-22

申请号：US15562361

申请日：2015-06-19

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

Inventor： Isabel Sanz Ananos ,  Santiago Sanz Ananos ,  Sergi Culubret

IPC: B29C64/393 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00

Abstract: According to one example there is provided a build material measurement module to determine build material characteristics from a build material to be analyzed.

公开(公告)号：US11266937B2

公开(公告)日：2022-03-08

申请号：US16087702

申请日：2017-03-28

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

Inventor： Ignacio Alejandre ,  Esteve Comas ,  Sergi Culubret

IPC: B01D50/00 ,  B01D45/12 ,  B04C1/00 ,  B04C11/00

Abstract: In an example, an air filtration apparatus includes a cyclonic particle separation chamber having a first inlet to draw air from a first region, second inlet to draw air from a second region, and an exhaust port. The air filtration apparatus may further include a pressure sensor to sense a pressure of the first region, and a cyclonic air flow controller. The cyclonic air flow controller may control an air inflow received via the second inlet in response to an output from the pressure sensor to maintain a total air flow rate via the exhaust port.

公开(公告)号：US20200271160A1

公开(公告)日：2020-08-27

申请号：US16608855

申请日：2017-11-13

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

Inventor： Victor Ruiz ,  Matt G. Driggers ,  Sergi Culubret

IPC: F16C29/02 ,  B41J25/34

Abstract: Linear guides for shafts are disclosed The linear guides comprise housings having a main opening to receive the shaft and multiple contact guiding elements, such m bearings or sliders, arranged on the housing and around the opening, each contact guiding element to contact the shaft at a different point The linear guides further comprise thermal compensation blocks affixed to the housing and in contact with a portion of a contact guiding element of the multiple contact guiding elements.

公开(公告)号：US10751946B2

公开(公告)日：2020-08-25

申请号：US15562361

申请日：2015-06-19

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

Inventor： Isabel Sanz Ananos ,  Santiago Sanz Ananos ,  Sergi Culubret

IPC: B33Y70/00 ,  B29C64/393 ,  B33Y50/00 ,  B29C64/35 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/153

Abstract: According to one example there is provided a build material measurement module to determine build material characteristics from a build material to be analyzed.

公开(公告)号：US10399271B2

公开(公告)日：2019-09-03

申请号：US15515333

申请日：2014-10-03

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

Inventor： Isabel Sanz Ananos ,  Sergi Culubret ,  Santiago Sanz Ananos

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B41J25/00 ,  B29C64/386 ,  B33Y70/00

Abstract: A method of aligning an agent distributor in an apparatus for generating a three-dimensional object comprises selectively depositing an agent on a layer of build material to form a predetermined alignment pattern (211, 212, 311, 312), and detecting the alignment pattern (211, 212, 311, 312) from a height profile in a surface of the build material, and performing an alignment operation using the detected alignment pattern (211, 212, 311, 312). An alignment pattern (211, 212, 311, 312) may comprise, for example, a series of triangles which are scanned to determine misalignment.

公开(公告)号：US20190160745A1

公开(公告)日：2019-05-30

申请号：US16092375

申请日：2016-05-12

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

Inventor： Ignacio Alejandre ,  Emilio Carlos Cano ,  Sergi Culubret

IPC: B29C64/209 ,  B29C64/393 ,  B29C35/16 ,  B29C64/165 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

Abstract: In some examples, a carriage for a printing system includes a printhead, a conduit to carry a cooling airflow to the printhead, a return chamber to receive a heated exhaust airflow produced from heating of the cooling airflow by the printhead, and a seal between the printhead and the return chamber to prevent the heated airflow from flowing to a location below the printhead.