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.

公开(公告)号：US10850450B2

公开(公告)日：2020-12-01

申请号：US14893477

申请日：2013-05-31

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

Inventor： Krzysztof Nauka ,  Sivapackia Ganapathiappan ,  Hou T. Ng

IPC: B29C64/386 ,  B29C64/40 ,  G06T19/20 ,  B29C64/393 ,  B29C67/00 ,  B33Y50/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A printed object includes a modification not present in the original model of the object. The modification is included in a base layer of the object.

公开(公告)号：US10125264B2

公开(公告)日：2018-11-13

申请号：US14786536

申请日：2013-06-19

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

Inventor： Sivapackia Ganapathiappan ,  Hou T. Ng ,  Krzysztof Nauka

IPC: C09D4/00 ,  B33Y70/00 ,  C08L101/02 ,  G03F7/027 ,  G03F7/033 ,  G03F7/038 ,  G03F7/075 ,  C08L75/16

Abstract: A composition for three-dimensional printing includes a precursor to a soft polymer block having a glass transition temperature (Tg) less than 50° C. and a precursor to a rigid polymer block having a Tg of at least 50° C. The precursor to the soft polymer block is a curable, cross-linkable monomer having an acrylic group, a vinyl group, or combinations thereof. The precursor to the rigid polymer block is a second curable, cross-linkable monomer selected from the group consisting of an acrylate monomer, a vinyl monomer, an acrylamide monomer, a urethane monomer, and an epoxy monomer.

公开(公告)号：US20180065297A1

公开(公告)日：2018-03-08

申请号：US15560422

申请日：2015-05-15

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

Inventor： Lihua Zhao ,  Yan Zhao ,  Hou T. Ng

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

CPC classification number: B29C64/165 ,  B29C64/386 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: In some examples, at least one agent distributor may be to selectively deliver mixtures of coalescing agent and carrier onto portions of a layer of build material at variable coalescing agent concentrations and variable contone densities. A controller may be to control the at least one agent distributor to selectively deliver the mixture to a portion of the layer at a selected coalescing agent concentration and a selected contone density.

公开(公告)号：US20180001550A1

公开(公告)日：2018-01-04

申请号：US15545956

申请日：2015-04-30

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

Inventor： Lihua Zhao ,  Yan Zhao ,  Hou T. Ng

IPC: B29C64/153 ,  B33Y10/00 ,  B29C64/124 ,  B33Y30/00

Abstract: In an example implementation, a method of printing a multi-structured three-dimensional (3D) object includes forming a layer of sinterable material. The method includes processing a first portion of the sinterable material using first set of processing parameters and processing a second portion of the sinterable material using a second set of processing parameters. The processed first and second portions form, respectively, parts of a first and second structure of a multi-structured 3D object.

公开(公告)号：US20170088714A1

公开(公告)日：2017-03-30

申请号：US15122596

申请日：2014-04-29

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

Inventor： Sivapackia Ganapathiappan ,  Hou T. Ng ,  Albert Teishev

IPC: C09C1/64 ,  C09D11/106 ,  C09D11/037 ,  G03G9/12 ,  G03G9/13

CPC classification number: C09C1/644 ,  B22F1/0055 ,  B22F1/0062 ,  B22F1/0074 ,  C09D11/037 ,  C09D11/106 ,  G03G9/0902 ,  G03G9/122 ,  G03G9/125 ,  G03G9/131

Abstract: A coated silver colored colorant includes a silver colored pigment, and a primer polymer at least partially coating the silver colored pigment. The primer polymer has a glass transition temperature that is less than 40° C. A passivating polymer is attached to the primer polymer. The passivating polymer has a glass transition temperature that is greater than 40° C.

公开(公告)号：US20160299445A1

公开(公告)日：2016-10-13

申请号：US15180566

申请日：2016-06-13

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

Inventor： Krzysztof Nauka ,  Zhang-Lin Zhou ,  Hou T. Ng

IPC: G03G5/147 ,  B05D7/00

CPC classification number: G03G5/14791 ,  B05D7/50 ,  G03G5/005 ,  G03G5/07 ,  G03G5/14721 ,  G03G5/14734 ,  G03G5/14739 ,  G03G5/14769 ,  G03G5/14778

Abstract: The present disclosure is related to coated photoconductors. In an example, a coated photoconductor can comprise a photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto and a top coating adhered to the photoconductor.

Abstract translation: 本公开涉及涂覆的光电导体。 在一个实例中，涂覆的光电导体可以包括光电导体，其包括具有附着到其上的电荷产生层和电荷传输层的基底和附着到光电导体的顶部涂层。

公开(公告)号：US20160221836A1

公开(公告)日：2016-08-04

申请号：US14908009

申请日：2013-09-27

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

Inventor： Yan Zhao ,  Howard S. Tom ,  Hou T. Ng

IPC: C01G23/053 ,  C09D11/322 ,  C09D17/00

CPC classification number: C01G23/053 ,  C01G23/0532 ,  C01P2004/01 ,  C01P2004/34 ,  C01P2004/62 ,  C01P2006/11 ,  C08K2003/2241 ,  C09C1/00 ,  C09C1/3676 ,  C09D5/028 ,  C09D7/61 ,  C09D11/023 ,  C09D11/102 ,  C09D11/322 ,  C09D17/00 ,  C09D17/008

Abstract: A white pigment dispersion includes 10 to 60 wt % of low effective density TiO2, 1 to 40 wt % of a latex, and the balance a dispersing medium. Inks using the low effective density TiO2 and methods for preparing the low effective density TiO2 are also disclosed.

Abstract translation: 白色颜料分散体包含10至60重量％的低有效密度TiO 2，1至40重量％的胶乳，余量为分散介质。 还公开了使用低有效密度TiO 2的油墨和用于制备低有效密度TiO 2的方法。

公开(公告)号：US20160144561A1

公开(公告)日：2016-05-26

申请号：US14899393

申请日：2013-06-20

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

Inventor： Krzysztof Nauka ,  Sivapackia Ganapathiappan ,  Hou T. Ng

IPC: B29C67/00

CPC classification number: B29C64/129 ,  B29C64/20 ,  B29C64/386 ,  B29K2105/0002 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B41J2/435

Abstract: Examples of the present disclosure describe a system and method for pattern-forming three-dimensional printing. According to one implementation, a layer of material curable by energy in a predetermined wavelength range is provided, and a pattern of ink opaque to energy in the predetermined wavelength range is printed onto a moveable element. Moreover, energy in the predetermined wavelength is applied through the moveable element and onto the deposited material so as to cure the material in those regions on which no ink is printed.

Abstract translation: 本公开的示例描述了用于图案形成三维打印的系统和方法。 根据一个实施方案，提供了可在预定波长范围内由能量固化的材料层，并且将对预定波长范围的能量不透明的墨水图案印刷到可移动元件上。 此外，预定波长的能量通过可移动元件施加到沉积的材料上，以便在没有油墨印刷的那些区域中固化材料。

公开(公告)号：US20160102217A1

公开(公告)日：2016-04-14

申请号：US14892560

申请日：2013-05-30

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

Inventor： Hou T. Ng ,  Howard S. Tom

IPC: C09D11/322 ,  C09D121/02 ,  C09D11/106

CPC classification number: C09D11/322 ,  B41J2/211 ,  B41J2/2114 ,  B41J2/2117 ,  C08K3/26 ,  C08K2003/265 ,  C09D11/106 ,  C09D11/38 ,  C09D121/02

Abstract: A white inkjet ink includes an anionic surfactant having a molecular weight less than 10,000, a white pigment, a latex particle, and a balance of water. The white pigment has i) a density less than 3 g/cm3, and ii) a substantially constant particle size over a predetermined time period. The substantially constant particle size ranges from about 100 nm to about 300 nm.

Abstract translation: 白色喷墨油墨包括分子量小于10,000的阴离子表面活性剂，白色颜料，胶乳颗粒和余量的水。 白色颜料具有i）小于3g / cm 3的密度，和ii）在预定时间段内基本上恒定的粒径。 基本恒定的粒度范围为约100nm至约300nm。