公开(公告)号：US11383435B2

公开(公告)日：2022-07-12

申请号：US17047723

申请日：2019-04-29

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

Inventor： Adekunle Olubummo ,  Kyle Wycoff ,  Aja Hartman ,  Lihua Zhao

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/268 ,  C08K5/17 ,  C08L63/00 ,  C08L77/04 ,  B29K63/00 ,  B29K77/00 ,  B29K105/00 ,  B29K105/24

Abstract: In an example of a method for three-dimensional (3D) printing, a build material composition is applied to form a build material layer. The build material composition includes a polyamide. The polyamide is selectively melted, based on a 3D object model, in at least a portion of the build material layer to form a molten portion including molten polyamide. An epoxy agent is selectively applied, based on the 3D object model, on the molten portion of the build material layer. The epoxy agent includes a polyfunctional epoxy, which crosslinks the molten polyamide in the molten portion.

公开(公告)号：US20220138374A1

公开(公告)日：2022-05-05

申请号：US17414520

申请日：2019-06-18

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

Inventor： Kristopher J. Erickson ,  Jarrid Wittkopf ,  Rafael Ballagas ,  David Wayne George ,  Lihua Zhao ,  William J. Allen

IPC: G06F30/20

Abstract: In one example in accordance with the present disclosure, a system is described. The system includes a reader to read an identifier associated with a part. An extractor of the system extracts, based on the identifier, a design file for the part. A modifier of the system receives user input modifying the design file and a transmitter transmits the modified design file for production of the part.

公开(公告)号：US20220097308A1

公开(公告)日：2022-03-31

申请号：US17415079

申请日：2019-06-18

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

Inventor： Kristopher J. Erickson ,  Jarrid Wittkopf ,  Rafael Ballagas ,  David Wayne George ,  Lihua Zhao ,  William J. Allen

IPC: B29C64/386 ,  B33Y50/00 ,  B33Y10/00 ,  B33Y30/00

Abstract: In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes an additive manufacturing device to form a three-dimensional (3D) printed object. A placement device is to embed a storage element into the 3D printed object and a controller is to write data to the embedded storage element that relates to manufacturing conditions of the 3D printed object.

公开(公告)号：US20210331252A1

公开(公告)日：2021-10-28

申请号：US16606084

申请日：2018-07-31

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

Inventor： Seongsik Chang ,  Krzysztof Nauka ,  Alejandro Manuel De Pena ,  Lihua Zhao

IPC: B22F12/43 ,  B22F10/28 ,  B22F10/36 ,  B28B1/00 ,  B28B17/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/06

Abstract: According to examples, an apparatus may include an array of micro-mirrors, each of the micro-mirrors being individually controllable to selectively be in a first position or a second position, and a light source to direct a pulse of light onto the array of micro-mirrors with sufficient intensity to cause micron-sized particles on a powder bed upon which the light is directed from the array of micro-mirrors to at least partially melt. Each of the micro-mirrors that is in the first position may reflect light onto a respective area on a layer of micron-sized particles to at least partially melt the micron-sized particles in the respective area and each of the micro-mirrors that is in the second position may reflect light away from the powder bed on which the micron-sized particles are supported.

公开(公告)号：US20210299967A1

公开(公告)日：2021-09-30

申请号：US17236698

申请日：2021-04-21

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

Inventor： Aja Hartman ,  Lihua Zhao

IPC: B29C64/393 ,  B29C64/165 ,  G01N25/72 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00 ,  G01N21/00

Abstract: In one example, an additive manufacturing process includes: making an object slice by slice, including dispensing a first quantity of each of multiple liquid functional agents on to a layer of fusable build material and then irradiating the layer of build material; while making the object, identifying a deviant region in a slice; and dispensing a second quantity different from the first quantity of at least one of the functional agents into a location corresponding to the deviant region.

公开(公告)号：US20210283911A1

公开(公告)日：2021-09-16

申请号：US16343834

申请日：2017-02-07

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

Inventor： Ning Ge ,  David George ,  Lihua Zhao ,  Qingqiao Wei ,  James Abbott ,  Esteve Comas

IPC: B41J2/14 ,  B29C64/205 ,  B29C64/295

Abstract: In one example In accordance with the present disclosure, a fluid ejection device is described. The fluid ejection device Includes a number of nozzles to eject fluid. Each nozzle Includes multiple firing chambers to hold fluid. The multiple firing chambers are separated: by a chamber partition. Each nozzle also includes a shared nozzle orifice in a substrate through which to dispense fluid. Each nozzle also Includes multiple ejectors, at least one ejector disposed in each firing chamber, in a common channel of the nozzle, fluid from the multiple firing chambers Is mixed, A height of the common channel is defined by the substrate and the chamber partition and is less than a width of the shared nozzle orifice.

公开(公告)号：US20210170688A1

公开(公告)日：2021-06-10

申请号：US17047295

申请日：2018-08-27

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

Inventor： Kristopher J Erickson ,  Lihua Zhao ,  Jonathan Salfity

IPC: B29C64/379 ,  G05B19/402 ,  B33Y50/02 ,  B33Y30/00 ,  B22F12/00 ,  B22F10/85 ,  B29C64/393 ,  B29C64/227 ,  B28B1/00 ,  B33Y40/00

Abstract: In some examples, an interaction module of a three-dimensional (3D) printer can include an interaction sub-module including a coupler, where the coupler is to connect to a tool, a first actuator to move the coupler in a first direction, and a second actuator to move the coupler in a second direction, and an analytics system to analyze the coupler and the tool during an interaction with a 3D object of the 3D printer, where the tool of the coupler is to interact with the 3D object of the 3D printer during a 3D print job.

公开(公告)号：US10968356B2

公开(公告)日：2021-04-06

申请号：US15764863

申请日：2016-01-27

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

Inventor： Sivapackia Ganapathiappan ,  Howard S Tom ,  Yan Zhao ,  Kristopher J Erickson ,  Krzysztof Nauka ,  Lihua Zhao

IPC: C09D11/322 ,  C09D11/32 ,  C09D11/36 ,  C09D11/106 ,  C09D11/30 ,  C09D11/033 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165 ,  C09D11/023 ,  C09D11/037 ,  C09D11/101 ,  C09D11/102 ,  B29K105/00

Abstract: The present disclosure is drawn to coalescent inks and material sets, such as for 3D printing. In one example, the coalescent ink can include a conjugated polymer, a colorant imparting a visible color to the coalescent ink, and an ink vehicle comprising a high boiling point co-solvent having a boiling point of 250° C. or greater. The high boiling point co-solvent can be present in an amount from about 1 wt % to about 4 wt % with respect to the coalescent ink.

公开(公告)号：US10967559B2

公开(公告)日：2021-04-06

申请号：US16462679

申请日：2017-02-14

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

Inventor： Wei Huang ,  Lihua Zhao ,  Gary J. Dispoto

IPC: B29C64/10 ,  G01N27/04 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y80/00 ,  B29C64/393 ,  B29C70/70 ,  B29C70/88 ,  B29L31/34

Abstract: According to an example, a three-dimensional (3D) printed object may include a body formed of an electrically non-conductive material. In addition, an electrically conductive channel, a sensing device, and a signal emitter may be embedded within the body. The sensing device may be in electrical communication with the electrically conductive channel such that the sensing device is affected by a disruption in a current applied through the electrically conductive channel. In addition, the signal emitter may emit a wireless signal in response to the sensing device being affected by a disruption in the applied current.

公开(公告)号：US10919217B2

公开(公告)日：2021-02-16

申请号：US15568979

申请日：2015-07-23

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

Inventor： Krzysztof Nauka ,  Howard S. Tom ,  Kristopher J. Erickson ,  Lihua Zhao ,  Sivapackia Ganapathiappan

IPC: B29C64/153 ,  C08K5/00 ,  C08L77/02 ,  B33Y70/00 ,  C08K3/20 ,  C08K3/22 ,  C08K3/32 ,  C08L101/00 ,  C08K3/30 ,  C08L71/12 ,  C08L101/12

Abstract: A three-dimensional printing build material composition includes a polymer particle, and a radiation absorbing additive mixed with the polymer particle. The radiation absorbing additive has a particle size ranging from about 1 μm to about 100 μm, and the radiation absorbing additive is to absorb incident radiation having wavelengths ranging from 700 nm to 10 μm.