公开(公告)号：US10800153B2

公开(公告)日：2020-10-13

申请号：US15518753

申请日：2014-11-20

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

Inventor： Ali Emamjomeh ,  Eric G. Wiesner ,  Winthrop Childers

IPC: B29C64/165 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29K105/00

Abstract: A three-dimensional object may be generated. First and second agent distributors may be to respectively selectively deliver a binder agent and a coalescing agent onto portions of a layer of build material. A controller may be to control the first and second agent distributors to respectively selectively deliver the binder agent and the coalescing agent onto respective first and second portions of the layer in patterns derived from data representing a slice of the three-dimensional object to be generated. The first portion having the binder agent may be to bind and solidify into a binder matrix. When energy is applied to the layer the second portion having the second agent may be to coalesce and solidify.

公开(公告)号：US20180022025A1

公开(公告)日：2018-01-25

申请号：US15546567

申请日：2015-04-30

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

Inventor： Ali Emamjomeh ,  Keshava A. Prasad ,  Alexey S. Kabalnov ,  Yi Feng ,  Winthrop Childers

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

CPC classification number: B29C64/165 ,  B22F3/008 ,  B22F3/1039 ,  B29C64/20 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00

Abstract: A three-dimensional (3D) printing method includes applying a build material, including: a plurality of first reactive particles; a plurality of second reactive particles, the first and second reactive particles to react with each other upon contact there with; and a coating on i) the plurality of first reactive particles; or ii) the plurality of second reactive particles; or iii) both i) and ii). The coating is to isolate the plurality of first reactive from the plurality of second reactive particles. A fluid is selectively applied on a portion of the build material, the fluid disrupting the coating on the portion of the build material to render the first and second reactive particles in the portion of the build material in contact with each other. The contact initiates mutual reacting and fusing between the first and second reactive particles.

公开(公告)号：US10576685B2

公开(公告)日：2020-03-03

申请号：US15546567

申请日：2015-04-30

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

Inventor： Ali Emamjomeh ,  Keshava A. Prasad ,  Alexey S. Kabalnov ,  Yi Feng ,  Winthrop Childers

IPC: B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/165 ,  B22F3/10 ,  B22F3/00 ,  B29C64/393

Abstract: A three-dimensional (3D) printing method includes applying a build material, including: a plurality of first reactive particles; a plurality of second reactive particles, the first and second reactive particles to react with each other upon contact there with; and a coating on i) the plurality of first reactive particles; or ii) the plurality of second reactive particles; or iii) both i) and ii). The coating is to isolate the plurality of first reactive from the plurality of second reactive particles. A fluid is selectively applied on a portion of the build material, the fluid disrupting the coating on the portion of the build material to render the first and second reactive particles in the portion of the build material in contact with each other. The contact initiates mutual reacting and fusing between the first and second reactive particles.

公开(公告)号：US20180071988A1

公开(公告)日：2018-03-15

申请号：US15560266

申请日：2015-05-15

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

Inventor： Ali Emamjomeh ,  Winthrop Childers

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/188 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G05B19/4099

CPC classification number: B29C64/393 ,  B29C64/165 ,  B29C64/188 ,  B29C64/20 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00 ,  B33Y50/02 ,  G05B19/4099 ,  G05B2219/49023 ,  G06T15/08 ,  G06T2210/12

Abstract: Examples relate to defining layers for generating three-dimensional objects. In the examples herein, a grid is obtained to represent a layer of a three-dimensional object. A boundary portion of the grid is defined, representing a surface portion of the three-dimensional object. A binding agent load is assigned to the boundary portion based on first pattern. An interior portion of the grid is defined. A coalescing agent load is assigned to the interior portion based on a second pattern.