公开(公告)号：US20180297286A1

公开(公告)日：2018-10-18

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 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/165 ,  B29C64/205

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：US20210197455A1

公开(公告)日：2021-07-01

申请号：US16077752

申请日：2017-07-14

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

Inventor： Shannon Reuben WOODRUFF ,  Ali EMAMJOMEH ,  Yi FENG ,  Erica FUNG ,  Carolin FLEISCHMANN ,  Geoffrey SCHMID

IPC: B29C64/165 ,  B33Y70/00

Abstract: This disclosure relates to a method of 3-D printing comprising: applying a layer of build material onto a print platform, wherein the build material comprises particles of a polymer comprising polymer chains having at least one reactive group that is protected with a protecting group; printing a de-protecting agent at selected locations on the layer of build material; and coalescing particles of the polymer at the printed locations on the layer of build material to form a coalesced polymer layer.

公开(公告)号：US20170232677A1

公开(公告)日：2017-08-17

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: B29C67/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00

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：US20220388239A1

公开(公告)日：2022-12-08

申请号：US17891453

申请日：2022-08-19

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

Inventor： Sterling CHAFFINS ,  Cassady Sparks ROOP ,  Kevin P. DEKAM ,  Vladek KASPERCHIK ,  Ali EMAMJOMEH ,  Johnathon HOLROYD ,  Stephen G. RUDISILL ,  Alexey S. KABALNOV

IPC: B29C64/153 ,  B29C64/336 ,  C08L67/04 ,  B29C70/88 ,  C08K3/22 ,  C09D11/40 ,  C08K3/08 ,  C09D11/52 ,  C09D11/322 ,  B29C64/205 ,  B33Y30/00 ,  B33Y50/00 ,  B33Y40/00 ,  B33Y80/00 ,  B29C64/255 ,  B29C64/227 ,  B29C64/307 ,  B29C64/176 ,  B29C64/182 ,  B29C64/25 ,  B33Y40/20 ,  B29C64/10 ,  B29C64/20 ,  B29C64/245 ,  B29C64/00 ,  B33Y99/00 ,  B29C64/30 ,  B33Y40/10 ,  B29C64/40

Abstract: The present disclosure is drawn to 3-dimensional printed parts that can include a conductive composite portion and an insulating portion. The conductive composite portion can include a matrix of fused thermoplastic polymer particles interlocked with a matrix of sintered elemental transition metal particles. The insulating portion can include a matrix of fused thermoplastic polymer particles that are continuous with the matrix of fused thermoplastic polymer particles in the conductive composite portion. The insulating portion can be substantially free of sintered elemental transition metal particles and can include transition metal oxide bronze particles.

公开(公告)号：US20160144634A1

公开(公告)日：2016-05-26

申请号：US15001732

申请日：2016-01-20

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

Inventor： Ali EMAMJOMEH ,  Jayanta C. PANDITARATNE ,  Radha SEN ,  Nathan Kazutoshi DENNI ,  Donna M. SIRENSKI

IPC: B41J11/00 ,  B41J29/38

CPC classification number: B41J11/002 ,  B41J11/0015 ,  B41J11/425 ,  B41J29/38 ,  B41M5/0017 ,  B41M7/00 ,  B41M7/0018

Abstract: A printing system includes a media transport device to move a medium at a speed ranging from about 15.24 mpm to about 609.6 mpm. The system includes an ink applicator to apply ink on the medium, and a treatment applicator to apply a treatment composition (including liquid vehicle, polyvalent metal salt fixing agent, and latex resin having an acid number less than 20) before or after the ink is applied, to form a printed-on medium. The system further includes a heating system programmed to: i) dry the printed-on medium at a predetermined temperature for a reduced dwell time (from about 1 second to about 40 seconds); and ii) leave residual moisture in the printed-on medium for a predetermined time after the reduced dwell time. The residual moisture is at a level that is higher than an initial moisture content of the medium prior to treatment composition and ink application.

Abstract translation: 打印系统包括介质传送装置，其以约15.24mpm至约609.6mpm的速度移动介质。 该系统包括用于在介质上施加油墨的油墨施加器和在油墨之前或之后施加处理组合物（包括液体载体，多价金属盐固定剂和酸值小于20的胶乳树脂）的处理施加器 应用，以形成印刷介质。 该系统还包括加热系统，其被编程为：i）在预定温度下干燥印刷的介质以减少停留时间（约1秒至约40秒）; 和ii）在减少的停留时间之后将残留的水分留在印刷的介质上预定的时间。 在处理组合物和油墨施用之前，残余水分的含量高于介质的初始含水量。