公开(公告)号：US12076917B2

公开(公告)日：2024-09-03

申请号：US17535223

申请日：2021-11-24

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

Inventor： Cary G. Addington ,  David A. Champion ,  Mohammed S. Shaarawi ,  James McKinnell ,  Diane R. Hammerstad

IPC: B29C64/153 ,  B29C64/268 ,  B29C64/282 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/153 ,  B29C64/268 ,  B29C64/282 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: In one example, a processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to vary operating characteristics of a fusing laser beam at multiple different voxel locations in a layer of build material according to an energy dosage to be applied at each voxel location in an object slice, including multiple different energy dosages for corresponding multiple different voxel locations in the slice.

公开(公告)号：US11865618B2

公开(公告)日：2024-01-09

申请号：US17251866

申请日：2018-12-26

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

Inventor： David A. Champion ,  John Gary Liebeskind

IPC: B22F3/10 ,  B22F3/00 ,  B22F10/85 ,  B22F10/322 ,  F27B5/04 ,  F27B1/00 ,  B33Y40/20

CPC classification number: B22F3/003 ,  B22F3/101 ,  B22F3/1007 ,  B22F3/1021 ,  B22F10/322 ,  B22F10/85 ,  F27B1/005 ,  F27B5/04 ,  B22F2003/1042 ,  B22F2998/10 ,  B22F2999/00 ,  B33Y40/20 ,  B22F2998/10 ,  B22F10/14 ,  B22F3/1007

Abstract: An example sinter system includes a sinter gas inlet at a sinter furnace for a sinter gas, a tracer gas inlet at the sinter furnace for a tracer gas different from the sinter gas, and an outlet at the sinter furnace to output the sinter gas and the tracer gas. The example sinter system further includes: a support structure to support a sample green object in the sinter furnace, an opening at the support structure connected to the tracer gas inlet, the opening to output the tracer gas into the sinter furnace, and a detector to: determine an amount of the tracer gas flowing through the outlet during a sinter process as a sample green object positioned on the support structure changes shape during the sinter process with respect to the opening and modifies a flow rate of the tracer gas to the outlet; and determine when to stop the sinter process based on a determined amount of the tracer gas.

公开(公告)号：US11633915B2

公开(公告)日：2023-04-25

申请号：US17107486

申请日：2020-11-30

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

Inventor： James Elmer Abbott, Jr. ,  David A. Champion ,  Chris Paul Schodin

IPC: B29C64/245 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y40/00 ,  B29C64/165 ,  B29C64/112 ,  B29C64/393 ,  B29C64/291

Abstract: In example implementations, an apparatus includes a housing, a movable base, a tab portion and a coupling mechanism. The housing is comprised of a microwave transparent material. The movable base is coupled to the housing to receive build material that is digitally printed. The tab portion is coupled to a bottom portion of at least one wall of the housing. The tab portion stops the movable base. The coupling mechanism is coupled to the housing to removably attach the apparatus to a three dimensional printer.

公开(公告)号：US20220080652A1

公开(公告)日：2022-03-17

申请号：US17535223

申请日：2021-11-24

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

Inventor： Cary G. Addington ,  David A. Champion ,  Mohammed S. Shaarawi ,  James McKinnell ,  Diane R. Hammerstad

IPC: B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/282 ,  B29C64/393 ,  B29C64/268

Abstract: In one example, a processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to vary operating characteristics of a fusing laser beam at multiple different voxel locations in a layer of build material according to an energy dosage to be applied at each voxel location in an object slice, including multiple different energy dosages for corresponding multiple different voxel locations in the slice.

公开(公告)号：US11207827B2

公开(公告)日：2021-12-28

申请号：US16074805

申请日：2017-03-29

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

Inventor： Cary G. Addington ,  David A. Champion ,  Mohammed S. Shaarawi ,  James McKinnell ,  Diane R. Hammerstad

IPC: B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/282 ,  B29C64/393 ,  B29C64/268

Abstract: In one example, a processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to vary operating characteristics of a fusing laser beam at multiple different voxel locations in a layer of build material according to an energy dosage to be applied at each voxel location in an object slice, including multiple different energy dosages for corresponding multiple different voxel locations in the slice.

公开(公告)号：US20210331406A1

公开(公告)日：2021-10-28

申请号：US16606033

申请日：2018-07-23

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

Inventor： Jordi Roca Vila ,  Sergio Gonzalez Martin ,  Daniel Mosher ,  David A. Champion ,  Jun Zeng

IPC: B29C64/393 ,  B29C64/165

Abstract: A printing device for adapting a printing parameter in relation to the height of a layer of material deposited during an additive manufacturing process is disclosed. The printing device comprises a printing component to deposit a layer of material that is to be solidified so as to form at least a portion of an object, a controller to determine the height of the layer of material at various positions across the layer and to select voxels of a data model of the object, the selected voxels correspond to the height of the layer of material at said various positions, and the controller is further to use the selected voxels as input for calculating a printing parameter.

公开(公告)号：US20210237360A1

公开(公告)日：2021-08-05

申请号：US17049498

申请日：2018-10-12

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

Inventor： David A. Champion ,  Adriaan Spierings ,  Thomas Bauer

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B28B1/00 ,  B22F10/85 ,  B22F12/67 ,  B29C64/214 ,  B28B17/00

Abstract: In some examples, a controller receives measurement data responsive to operation of a vibrated spreader for use in dispensing a build material onto a target surface, and controls a frequency of a vibration of the spreader based on the measurement data.

公开(公告)号：US20210187840A1

公开(公告)日：2021-06-24

申请号：US17045534

申请日：2018-09-14

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

Inventor： Vladek Kasperchik ,  David A. Champion ,  Douglas Pederson

IPC: B29C64/165

Abstract: A three-dimensional (3D) object printing kit includes a polymeric material; a fusing agent including at least 5 vol % of a polar solvent; and a detailing agent. The detailing agent includes a non-polar, hydrophobic substance selected from the group consisting of a non-polar, hydrophobic liquid in its liquid state at a temperature ranging from about −80° C. to about 40° C., and a non-polar, hydrophobic wax having a melting temperature less than 120° C.

公开(公告)号：US10759085B2

公开(公告)日：2020-09-01

申请号：US15763193

申请日：2015-11-20

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

Inventor： Vladek Kasperchik ,  Michael G. Monroe ,  Pavel Kornilovich ,  David A. Champion

IPC: B28B1/00 ,  B33Y30/00 ,  B33Y10/00 ,  C04B35/64 ,  C04B35/63 ,  C04B35/636 ,  C04B35/638 ,  B33Y50/02 ,  B28B7/46 ,  C04B35/634 ,  B29C64/165 ,  B33Y70/00

Abstract: In a three-dimensional printing method example, build material granules are applied. Each of the build material granules includes uncoated, primary ceramic particles agglomerated together by a binder that is soluble in a primary solvent of a fusing agent. The fusing agent is selectively applied on at least a portion of the build material granules. The binder dissolves and a green body including a slurry of the uncoated, ceramic particles is created.

公开(公告)号：US10478994B2

公开(公告)日：2019-11-19

申请号：US15512422

申请日：2014-10-08

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

Inventor： David A. Champion ,  James Elmer Abbott, Jr.

IPC: B28B1/00 ,  B28B11/24 ,  B29C64/165 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B28B17/00 ,  B29C64/209 ,  B29C64/291

Abstract: In one example, a method of fabricating a three-dimensional object includes depositing a layer of build material, depositing a coalescing agent onto the layer of build material according to a slice of three-dimensional model data, irradiating the coalescing agent with microwave radiation such that the coalescing agent converts the microwave radiation into heat to coalesce the build material in which the coalescing agent was deposited.