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：US20210362240A1

公开(公告)日：2021-11-25

申请号：US16603332

申请日：2018-04-30

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

Inventor： Mohammed S. Shaarawi ,  James McKinnell ,  Vladek Kasperchik

IPC: B22F10/43 ,  B22F10/14 ,  B22F3/10 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y80/00 ,  B33Y70/00

Abstract: In an example of a method for three-dimensional (3D) printing, metallic build material layers are patterned to form an intermediate structure. During patterning, a binding agent is selectively applied to define: a build material support structure and a patterned intermediate part. Also during patterning, i) the binding agent and a separate agent including an etch sensitizer or ii) a combined agent including a binder and the etch sensitizer are selectively applied to define a patterned etchable connection between at least a portion of the build material support structure and at least a portion patterned intermediate part. The intermediate structure is heated.

公开(公告)号：US20210237156A1

公开(公告)日：2021-08-05

申请号：US17047467

申请日：2018-10-25

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

Inventor： Vladek Kasperchik ,  Mohammed S. Shaarawi ,  James McKinnell

IPC: B22F10/14 ,  C08K3/04 ,  C08K3/11 ,  B22F3/10 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/10 ,  B22F1/00

Abstract: A three-dimensional printing kit can include a binder fluid and a particulate build material. The particulate build material can include metal particles in an amount from about 95 wt % to about 99.995 wt % and carbon black particles in an amount from about 0.005 wt % to about 2 wt %, wherein weight percentages are based on a total weight of the particulate build material.

公开(公告)号：US20210001401A1

公开(公告)日：2021-01-07

申请号：US16605131

申请日：2018-03-15

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

Inventor： Mohammed S Shaarawi ,  James McKinnell ,  Vladek Kasperchik ,  David A Champion

IPC: B22F3/105 ,  B22F3/10 ,  B22F5/00 ,  B22F1/00 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y40/20

Abstract: In an example of a method for three-dimensional (3D) printing, build material layers are patterned to form an intermediate structure. During patterning, a binding agent is selectively applied to define a patterned intermediate part. Also during patterning, i) the binding agent and a separate agent including a gas precursor are, or ii) a combined agent including a binder and the gas precursor is, selectively applied to define a build material support structure adjacent to at least a portion of the patterned intermediate part. The intermediate structure is heated to a temperature that activates the gas precursor to create gas pockets in the build material support structure.

公开(公告)号：US20190047045A1

公开(公告)日：2019-02-14

申请号：US16073173

申请日：2016-04-19

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

Inventor： Mohammed S. Shaarawi ,  James McKinnell ,  Vladek Kasperchik ,  David A. Champion ,  Greg Scott Long

IPC: B22F1/00 ,  B22F3/105 ,  B22F9/04

Abstract: In a three-dimensional printing method example, a liquid functional agent is selectively applied. The liquid functional agent includes an alloying agent. A metallic build material is applied. The liquid functional agent is selectively applied before the metallic build material, after the metallic build material, or both before and after the metallic build material. The liquid functional agent patterns the metallic build material to form a composite layer. At least some of the metallic build material is exposed to energy to melt the at least some of the metallic build material to form a layer. Upon contact or after energy exposure, the alloying agent and the build material alter a composition of the composite layer.

公开(公告)号：US20180272600A1

公开(公告)日：2018-09-27

申请号：US15763172

申请日：2016-01-29

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

Inventor： Mohammed S. Shaarawi ,  Vladek Kasperchik ,  James McKinnell ,  David A. Champion

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/20 ,  B29C64/393 ,  B33Y70/00

Abstract: In a three-dimensional printing method example, a liquid functional agent is selectively applied. The liquid functional agent includes i) an energy source material or ii) an energy sink material. A metallic or ceramic build material is applied. The liquid functional agent is selectively applied any of before the metallic or ceramic build material, after the metallic or ceramic build material, or both before and after the metallic or ceramic build material. The liquid functional agent patterns the metallic or ceramic build material to form a composite layer. At least some of the metallic or ceramic build material is exposed to energy. A reaction involving i) the energy source material or ii) the energy sink material is initiated to alter a thermal condition of the composite layer.

公开(公告)号：US09969164B2

公开(公告)日：2018-05-15

申请号：US15364202

申请日：2016-11-29

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

Inventor： James McKinnell ,  Tony S. Cruz-Uribe

IPC: B41J2/165 ,  B41J2/14 ,  B41J2/055

CPC classification number: B41J2/1433 ,  B41J2/055 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2002/14419

Abstract: An example provides a plurality of nozzles; a common fluid supply channel in fluid communication with the plurality of nozzles and a compressible material forming, at least in part, a compressible wall of the common fluid supply channel, wherein the compressible wall has a volume and wherein the volume changes in response to changes in pressure in the common fluid supply channel.