公开(公告)号：US10406744B2

公开(公告)日：2019-09-10

申请号：US15545143

申请日：2015-03-05

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

Inventor： Bernardo A. Gutierrez ,  Jacob T. Wright ,  Michael A. Novick

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

Abstract: At least one agent distributor may be to selectively deliver coalescing agent onto portions of a layer of build material at a first density and at a second density lower than the first density. A controller may be to control the at least one agent distributor to selectively deliver the coalescing agent at the first and second densities onto respective first and second portions of the layer in respective first and second patterns derived from data representing the three-dimensional object to be generated, so that when energy is applied to the layer the build material may coalesce and solidify to form a slice of the three-dimensional object in accordance with the first pattern. The second portion may be in proximity to a boundary of the first portion. Presence of the coalescing agent in the second portion may be to prevent at least some heat from flowing away from the first portion when the energy is applied.

公开(公告)号：US20180009157A1

公开(公告)日：2018-01-11

申请号：US15545143

申请日：2015-03-05

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

Inventor： Bernardo A. Gutierrez ,  Jacob T. Wright ,  Michael A. Novick

IPC: B29C64/10 ,  B33Y50/02 ,  B33Y10/00

CPC classification number: B29C64/10 ,  B29C64/165 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: At least one agent distributor may be to selectively deliver coalescing agent onto portions of a layer of build material at a first density and at a second density lower than the first density. A controller may be to control the at least one agent distributor to selectively deliver the coalescing agent at the first and second densities onto respective first and second portions of the layer in respective first and second patterns derived from data representing the three-dimensional object to be generated, so that when energy is applied to the layer the build material may coalesce and solidify to form a slice of the three-dimensional object in accordance with the first pattern. The second portion may be in proximity to a boundary of the first portion. Presence of the coalescing agent in the second portion may be to prevent at least some heat from flowing away from the first portion when the energy is applied.

公开(公告)号：US11097472B2

公开(公告)日：2021-08-24

申请号：US16526076

申请日：2019-07-30

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

Inventor： Bernardo A. Gutierrez ,  Jacob T. Wright ,  Michael A. Novick

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

Abstract: At least one agent distributor may be to selectively deliver coalescing agent onto portions of a layer of build material at a first density and at a second density lower than the first density. A controller may be to control the at least one agent distributor to selectively deliver the coalescing agent at the first and second densities onto respective first and second portions of the layer in respective first and second patterns derived from data representing the three-dimensional object to be generated, so that when energy is applied to the layer the build material may coalesce and solidify to form a slice of the three-dimensional object in accordance with the first pattern. The second portion may be in proximity to a boundary of the first portion. Presence of the coalescing agent in the second portion may be to prevent at least some heat from flowing away from the first portion when the energy is applied.

公开(公告)号：US11014306B2

公开(公告)日：2021-05-25

申请号：US15569381

申请日：2015-07-09

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

Inventor： Jacob Tyler Wright ,  Bernardo A. Gutierrez ,  Sergio Puigardeu Aramendia ,  Ali Emamjomeh ,  Lihua Zhao ,  Andrew E. Fitzhugh

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/205 ,  B33Y50/00

Abstract: An agent distributor may be to selectively deliver agent at a first contone density and at a second contone density different from the first contone density respectively onto an interior portion and a surface portion of successive layers of build material in respective first and second patterns in accordance with data representing a three-dimensional object to be generated, so that the build material is to solidify to form slices of the three-dimensional object in accordance with the first and second patterns, and so that the three-dimensional object is to achieve a target surface roughness as a result of the second contone density of the second pattern.

公开(公告)号：US20210138724A1

公开(公告)日：2021-05-13

申请号：US16605113

申请日：2018-03-23

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

Inventor： Rachael Donovan ,  Yi Feng ,  Michael A. Novick ,  Bernardo A. Gutierrez ,  Mariya Gelman ,  Geoffrey Schmid ,  Carolin Fleischmann

IPC: B29C64/165 ,  B29C64/268 ,  B29C64/314 ,  B33Y70/00 ,  B29C64/218

Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a polyether block amide polymer. The fusing agent includes an energy absorber to absorb electromagnetic radiation to melt or fuse the at least a portion of the polyether block amide polymer.

公开(公告)号：US20190351608A1

公开(公告)日：2019-11-21

申请号：US16526076

申请日：2019-07-30

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

Inventor： Bernardo A. Gutierrez ,  Jacob T. Wright ,  Michael A. Novick

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

Abstract: At least one agent distributor may be to selectively deliver coalescing agent onto portions of a layer of build material at a first density and at a second density lower than the first density. A controller may be to control the at least one agent distributor to selectively deliver the coalescing agent at the first and second densities onto respective first and second portions of the layer in respective first and second patterns derived from data representing the three-dimensional object to be generated, so that when energy is applied to the layer the build material may coalesce and solidify to form a slice of the three-dimensional object in accordance with the first pattern. The second portion may be in proximity to a boundary of the first portion. Presence of the coalescing agent in the second portion may be to prevent at least some heat from flowing away from the first portion when the energy is applied.

公开(公告)号：US20190061240A1

公开(公告)日：2019-02-28

申请号：US16070454

申请日：2016-05-12

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

Inventor： Ignacio Alejandre ,  Sergi Culubret ,  Salvador Sanchez Ribes ,  Bernardo A. Gutierrez

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

Abstract: In some examples, a printing system includes a printhead that is relatively moveable with respect to a print platform, and an airflow generator assembly to generate a first cooling airflow towards the printhead responsive to the printhead being at in a first inactive region on a first side of the print platform, and generate a second cooling airflow towards the printhead responsive to the printhead being in a second inactive region on a second, different side of the print platform.

公开(公告)号：USD729030S1

公开(公告)日：2015-05-12

申请号：US29455715

申请日：2013-05-23

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

Designer： Michael A. Novick ,  Bernardo A. Gutierrez ,  Brandon Phong Khieu ,  Peter A. Ward

公开(公告)号：US12115723B2

公开(公告)日：2024-10-15

申请号：US17288522

申请日：2019-06-10

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

Inventor： Alexey S. Kabalnov ,  Jacob Wright ,  Behrang Khorsandian ,  Bernardo A. Gutierrez ,  Geoffrey Schmid

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  B82Y20/00 ,  B82Y30/00

CPC classification number: B29C64/165 ,  B29K2995/0035 ,  B33Y10/00 ,  B33Y70/00 ,  B82Y20/00 ,  B82Y30/00

Abstract: A multi-fluid kit for three-dimensional printing includes a fusing agent and a fluorescing detailing agent. The fusing agent includes water and a radiation absorber. The radiation absorber absorbs radiation energy and converts the radiation energy to heat. The fluorescing detailing agent includes water and a fluorescent colorant that is active by exposure to ultraviolet energy to emit light in the visible range of from about 400 nm to about 780 nm. The multi-fluid kit is devoid of a second detailing agent and a second fluorescent colorant.

公开(公告)号：US20220088856A1

公开(公告)日：2022-03-24

申请号：US17288522

申请日：2019-06-10

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

Inventor： Alexey S. Kabalnov ,  Jacob Wright ,  Behrang Khorsandian ,  Bernardo A. Gutierrez ,  Geoffrey Schmid

IPC: B29C64/165 ,  C09K11/06

Abstract: A multi-fluid kit for three-dimensional printing includes a fusing agent and a fluorescing detailing agent. The fusing agent includes water and a radiation absorber. The radiation absorber absorbs radiation energy and converts the radiation energy to heat. The fluorescing detailing agent includes water and a fluorescent colorant that is active by exposure to ultraviolet energy to emit light in the visible range of from about 400 nm to about 780 nm. The multi-fluid kit is devoid of a second detailing agent and a second fluorescent colorant.