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公开(公告)号：US20160297143A1
公开(公告)日：2016-10-13
申请号：US15100584
申请日：2014-01-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Sivapackia Ganapathiappan , Howard S. Tom , Hou T. Ng
CPC classification number: B29C67/0081 , A01N43/80 , B29C64/00 , B29C64/165 , B29C64/386 , B29C64/40 , B29K2049/00 , B29K2105/16 , B33Y10/00 , B33Y70/00 , C09B47/045
Abstract: In a 3D printing method, a coalescent dispersion for forming a 3D object is selected. The dispersion includes an aqueous vehicle and an infrared or near-infrared binding agent dissolved or dispersed therein. The binding agent is a phthalocyanine having a polar group attached to each side chain or a naphthalocyanine having a polar group attached to each side chain. A sinterable material is deposited and heated to a temperature ranging from about 50 C to about 350 C. The dispersion is selectively applied on at least a portion of the sinterable material. The sinterable material and the dispersion applied thereon are exposed to infrared or near-infrared radiation. The binding agent absorbs the radiation and converts it to thermal energy. At least the portion of the sinterable material in contact with the binding agent is at least cured to form a first layer of the 3D object.
Abstract translation: 在3D打印方法中，选择用于形成3D对象的聚结分散体。 分散体包括水性载体和溶解或分散在其中的红外或近红外粘合剂。 结合剂是具有连接到每个侧链的极性基团的酞菁或者具有连接到每个侧链的极性基团的萘酞菁。 将可烧结材料沉积并加热到约50℃至约350℃的温度。将分散体选择性地施加到可烧结材料的至少一部分上。 将可烧结材料和施加在其上的分散体暴露于红外或近红外辐射。 粘合剂吸收辐射并将其转换成热能。 至少与接合剂接触的可烧结材料的部分至少固化以形成3D物体的第一层。
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公开(公告)号：US20230347585A1
公开(公告)日：2023-11-02
申请号：US18132352
申请日：2023-04-07
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Howard S. Tom , Kristopher J. Erickson , Lihua Zhao , Sivapackia Ganapathiappan
IPC: B29C64/165 , B33Y30/00 , B33Y10/00 , B29C64/153 , B29C64/194 , B33Y70/10 , B33Y50/02 , B29C64/264 , B29C64/112 , B29C64/393 , B29C64/218 , B29C35/08
CPC classification number: B29C64/165 , B33Y30/00 , B33Y10/00 , B29C64/153 , B29C64/194 , B33Y70/10 , B33Y50/02 , B29C64/264 , B29C64/112 , B29C64/393 , B29C64/218 , B29C35/0805 , B29C2035/0822 , B29K2077/00
Abstract: A three-dimensional (3D) printing method includes applying a build material composition having a polymer particle and a radiation absorbing additive mixed with the polymer particle, the radiation absorbing additive being selected from the group consisting of inorganic near-infrared absorbers, organic near-infrared absorbers, and combinations thereof. The build material composition is preheated to a temperature below the melting temperature of the polymer particle by exposing the build material composition to radiation, the radiation absorbing additive increasing radiation absorption and accelerating the pre-heating of the build material composition. A fusing agent is selectively applied on at least a portion of the build material composition. The method further includes exposing the build material composition to radiation, whereby at least the polymer particle in the at least the portion of the build material composition in contact with the fusing agent at least partially fuses.
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公开(公告)号：US11511479B2
公开(公告)日：2022-11-29
申请号：US16076369
申请日：2017-07-10
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Aja Hartman , Adekunle Olubummo , Kristopher J. Erickson , Lihua Zhao , Howard S. Tom
IPC: B29C64/393 , B29C64/112 , B29C64/165 , B29C64/205 , B33Y10/00 , B33Y30/00 , B33Y50/02
Abstract: A device includes a carriage movable relative to a build pad along a bi-directional travel path and supporting at least a radiation source and an applicator to selectively apply a plurality of fluid agents, including first fluid agents to affect a first material property. A timing and order of operation of the radiation source and the applicator, with the carriage, is to maintain first and second portions of a 3D object under formation within at least one selectable temperature range despite a first total volume of the first fluid agents for application onto the first portion of the 3D object being substantially greater than a second total volume of second fluid agents for application onto the second portion of the 3D object.
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公开(公告)号：US20220001596A1
公开(公告)日：2022-01-06
申请号：US17311978
申请日：2018-12-14
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Aja Hartman , Alexandra Ju , Mary G. Baker , Lihua Zhao , Howard S. Tom , Melanie M. Gottwals , Ingeborg Tastl
IPC: B29C64/106 , B29C64/209 , B29C64/307 , B33Y10/00 , B33Y30/00
Abstract: A three-dimensional printing system includes a controller to instruct a fusing agent distributor to selectively apply a fusing agent to a first region of a layer of build material. The controller also determines a subset of voxels in the layer of build material to provide an opacifying agent based on an opacity value of an opacified region of an object to be generated and instructs an opacifying agent distributor to apply the opacifying agent to the determined subset of voxels.
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公开(公告)号：US11104816B2
公开(公告)日：2021-08-31
申请号：US16936978
申请日：2020-07-23
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Sivapackia Ganapathiappan , Howard S. Tom , Lihua Zhao , Krzysztof Nauka , Yan Zhao , Hou T. Ng
IPC: C09D11/033 , B33Y70/00 , B33Y10/00 , B29C64/165 , C09D11/322 , C09D11/328 , C09D11/037 , C09D11/102 , B29K105/00
Abstract: The present disclosure is drawn to material sets for 3D printing and methods of 3D printing. The material set can include a coalescent an organic-soluble near-infrared dye having a peak absorption wavelength from 800 nm to 1400 nm. The coalescent ink can also include water and an organic co-solvent. The material set can also include a particulate polymer formulated to coalesce when contacted by the coalescent ink and irradiated by a near-infrared energy having the peak absorption wavelength.
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Patent Agency Ranking
公开(公告)号：US11072112B2
公开(公告)日：2021-07-27
申请号：US16098072
申请日：2016-07-19
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Howard S. Tom , Kristopher Li
IPC: B29C64/129 , B33Y70/00 , B33Y10/00 , B29C64/112 , B29C64/165 , B29C64/393 , B29C64/295 , B29C64/264 , B33Y30/00 , B29C64/291 , B29C35/08
Abstract: To additively manufacture a 3D object, a layer of material is deposited onto a receiving surface. Droplets are selective deposited onto first portions of the layer with at least some droplets including at least a first color agent. A gas discharge illuminant selectively induces a first amount of heating in the first portions of the layer substantially greater than a second amount of heating in second portions of the layer omitting the first color agent.
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公开(公告)号：US20190160533A1
公开(公告)日：2019-05-30
申请号：US16264676
申请日：2019-02-01
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Kristopher J. Erickson , Krzysztof Nauka , Thomas Anthony , Lihua Zhao , Howard S. Tom
Abstract: Apparatus and methods for making metal-connected particle articles. A metal containing fluid is selectively applied to a layer of particles. The metal in the fluid is used to form metal connections between particles. The metal connections are formed at temperatures below the sintering temperature of the particles in the layer of particles.
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公开(公告)号：US20190160532A1
公开(公告)日：2019-05-30
申请号：US16264658
申请日：2019-01-31
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Kristopher J. Erickson , Krzysztof Nauka , Thomas Anthony , Lihua Zhao , Howard S. Tom
Abstract: Apparatus and methods for making metal-connected particle articles. A metal containing fluid is selectively applied to a layer of particles. The metal in the fluid is used to form metal connections between particles. The metal connections are formed at temperatures below the sintering temperature of the particles in the layer of particles.
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公开(公告)号：US20190152134A1
公开(公告)日：2019-05-23
申请号：US16098072
申请日：2016-07-19
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Howard S. Tom , Kristopher Li
IPC: B29C64/129 , B29C64/291 , B29C35/08 , B33Y10/00 , B33Y30/00 , B33Y70/00 , B29C64/112 , B29C64/165 , B29C64/393
Abstract: To additively manufacture a 3D object, a layer of material is deposited onto a receiving surface. Droplets are selective deposited onto first portions of the layer with at least some droplets including at least a first color agent. A gas discharge illuminant selectively induces a first amount of heating in the first portions of the layer substantially greater than a second amount of heating in second portions of the layer omitting the first color agent.
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公开(公告)号：US20190001558A1
公开(公告)日：2019-01-03
申请号：US16073613
申请日：2016-04-27
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Kristopher J. Erickson , Howard S. Tom , Lihua Zhao
Abstract: According to an example, a composition may include a high melt temperature build material in the form of a powder; a first low melt temperature binder in the form of a powder; and a second low melt temperature binder in the form of a powder, and in which the first low melt temperature binder melts at a temperature that is different from the second low melt temperature binder.
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