公开(公告)号：US20210198511A1

公开(公告)日：2021-07-01

申请号：US16080252

申请日：2017-02-24

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Stephen G. RUDISILL ,  Alexey S. KABALNOV ,  Vladek KASPERCHIK

IPC分类号： C09D11/40 ,  C09D11/38 ,  B29C64/112 ,  B41M5/00

摘要： An example inkjet primer fluid includes an alkoxysilane, a surfactant, a co-solvent, and a balance of water; and is at least substantially colorless. In an example method, a primer fluid, including an alkoxysilane, a surfactant, a co-solvent, and a balance of water, is thermal inkjet printed from a thermal inkjet printhead to form a silicon dioxide film on a resistor. Then, a jettable composition, including suspended nanoparticles, is thermal inkjet printed from the thermal inkjet printhead. In another example method, suspended nanoparticles, an alkoxysilane, and a growth mediator are combined to form a mixture. The mixture is heated to a temperature ranging from about 60° C. to about 80° C. and stirred for about 12 hours to about 36 hours to form silicon dioxide coated, suspended nanoparticles. Then, a surfactant, a zwitterionic stabilizer, a co-solvent, and a balance of water are added to the mixture to form a stabilized, jettable composition.

公开(公告)号：US20220388239A1

公开(公告)日：2022-12-08

申请号：US17891453

申请日：2022-08-19

申请人： Hewlett-Packard Development Company, L.P.

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

IPC分类号： 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

摘要： 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：US20190054689A1

公开(公告)日：2019-02-21

申请号：US16074448

申请日：2017-08-30

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Stephen G. RUDISILL ,  Alexey S. KABALNOV ,  Jacob WRIGHT ,  Hector Jose LEBRON

IPC分类号： B29C64/165 ,  B33Y10/00 ,  B33Y80/00 ,  B33Y70/00 ,  C09D11/324 ,  C09D11/328 ,  C09D11/322

摘要： Disclosed herein is a three-dimensional printing method comprising: applying a build material; applying on, at least, a portion of the build material, a low tint fusing agent composition comprising metal oxide nanoparticles dispersed in a liquid vehicle; and exposing the build material to radiations to fuse the portion of the build material in contact with the low tint fusing agent composition in order to form a layer of a 3D object. Also disclosed herein is an article obtained according to the three-dimensional printing method described herein. Such articles comprises a core substrate made of a polymeric build material that has been fused with a core fusing agent composition; a first layer, applied on the surface of the core substrate, comprising a polymeric build material fused with a low tint fusing agent composition including metal oxide nanoparticles dispersed in a liquid vehicle; and a second layer, applied over the surface of the first layer, comprising a polymeric build material fused with a colored ink composition and a core fusing agent or with a low tint fusing agent composition colored ink composition.

公开(公告)号：US20210238430A1

公开(公告)日：2021-08-05

申请号：US17235554

申请日：2021-04-20

申请人： Hewlett-Packard Development Company, L.P.

发明人： Ali Emamjomeh ,  Erica Montei Fung ,  Alexey S. KABALNOV

IPC分类号： C09D11/102 ,  C08J3/28 ,  C08J3/12 ,  B33Y70/00 ,  C08J3/205 ,  C08J7/02 ,  C09D11/101

摘要： The present disclosure is drawn to a composite particulate build material, including 92 wt % to 99.5 wt % polymeric particles having an average size from 10 μm to 150 μm and an average aspect ratio of less than 2:1, The composite particulate build material further includes from 0.5 wt % to 8 wt % reinforcing particles having an average size of 0.1 μm to 20 μm and an average aspect ratio of 3:1 to 100:1 applied to a surface of the polymeric particles.

公开(公告)号：US20210189162A1

公开(公告)日：2021-06-24

申请号：US16074284

申请日：2017-08-30

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Alexey S. KABALNOV ,  Stephen G. RUDISILL

IPC分类号： C09D11/38 ,  C09D11/322 ,  C09D11/037 ,  C09D11/033 ,  B33Y70/10

摘要： Disclosed herein is a water-based dispersion, which includes metal oxide nanoparticles and a zwitterionic stabilizer. More specifically, the dispersion comprises a metal oxide nanoparticle having the formula (1) MmM′On, wherein M is an alkali metal, m is greater than 0 and less than 1, M′ is any metal, and n is greater than 0 and less than or equal to 4; a zwitterionic stabilizer; and a balance of water. Also disclosed herein is a jettable composition, which includes metal oxide nanoparticles having the formula (1) MmM′On wherein M is an alkali metal, m is greater than 0 and less than 1, M′ is any metal, and n is greater than 0 and less than or equal to 4; a zwitterionic stabilizer; a surfactant; and a balance of water.