公开(公告)号：US20210062025A1

公开(公告)日：2021-03-04

申请号：US16497520

申请日：2017-06-09

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

Inventor： Natalie Harvey ,  Jennifer Wu ,  Thomas W. BUTLER ,  Vladimir JAKUBEK

IPC: C09D11/324 ,  C09D11/102 ,  B41M5/00 ,  B41J2/175

Abstract: The present disclosure is drawn to an inkjet printing system including an ink composition and a microfluidic ejection assembly. The ink composition can include carbon black pigment, from 50 wt % to 80 wt % water, from 10 wt % to 40 wt % of an organic solvent system, and from 0.5 wt % to 6 wt % polyurethane. The microfluidic ejection assembly can include a drop generator for externally ejecting the ink composition, and a fluid pump for internally inducing microfluidic recirculation flow of the ink composition into the drop generator.

公开(公告)号：US11987006B2

公开(公告)日：2024-05-21

申请号：US17417745

申请日：2019-07-19

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

Inventor： Daniel Mosher ,  Jennifer Wu ,  Vladek Kasperchik ,  David A. Champion

IPC: B29C64/393 ,  B33Y50/02 ,  G05B19/4099 ,  B29C64/153 ,  B29C64/165

CPC classification number: B29C64/393 ,  B33Y50/02 ,  G05B19/4099 ,  B29C64/153 ,  B29C64/165

Abstract: According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to determine physical characteristics of a build layer of build material particles. The instructions may also cause the processor to determine an adjustment to forming data based on the determined physical characteristics, the forming data to be used informing a subsequent build layer. The instructions may further cause the processor to apply the determined adjustment to the forming data for use in forming the subsequent build layer, in which portions of a three-dimensional (3D) object are to be formed in the build layer and the subsequent build layer.

公开(公告)号：US20150355223A1

公开(公告)日：2015-12-10

申请号：US14763511

申请日：2013-01-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY L.P.

Inventor： Jennifer Wu ,  Rodney L. Alley ,  Robert G. Walmsley ,  Donald J. Milligan

IPC: G01P15/125 ,  G01P15/08

CPC classification number: G01P15/125 ,  B81B7/0029 ,  B81B2201/0221 ,  B81B2201/0235 ,  G01C19/5769 ,  G01P1/023 ,  G01P15/0802 ,  Y10T29/417

Abstract: A sensor having a particle barrier is described. In an example, a sensor includes: first and second electrode sets respectively disposed upon a planar support surface and a proof mass that is compliantly displaceable along a first axis substantially parallel to the planar support surface; and a first barrier disposed on the planar support around the first electrode set having a height less than a gap between the planar support and the proof mass to mitigate particle migration into the first or second electrode set.

Abstract translation: 描述具有颗粒屏障的传感器。 在一个示例中，传感器包括：分别设置在平面支撑表面上的第一和第二电极组以及沿着基本上平行于平面支撑表面的第一轴线顺应地移位的检测质量块; 以及围绕所述第一电极组设置在所述平面支撑件上的第一屏障，所述第一电极具有小于所述平面支撑件和所述检测质量块之间的间隙的高度，以减轻进入所述第一或第二电极组的颗粒迁移。

公开(公告)号：US20220267620A1

公开(公告)日：2022-08-25

申请号：US17626988

申请日：2019-09-05

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

Inventor： Vladek Kasperchik ,  Jennifer Wu ,  Michael G. Monroe

IPC: C09D11/033 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y40/20 ,  B22F10/14 ,  B28B1/00 ,  C09D11/107 ,  C09D11/037 ,  C09D11/322

Abstract: A multi-fluid kit for three-dimensional printing can include a wetting agent and a binding agent. The wetting agent can include from 0 wt % to about 49.8 wt % water, from about 0.5 wt % to about 30 wt % film-forming organic solvent that can have a boiling point from greater than about 100° C. to about 350° C., and from about 30 wt % to about 99.5 wt % amphiphilic solvent that can have a boiling point from about 45° C. to less than about 100° C. The amphiphilic solvent can be water-miscible and can be present in the wetting agent at a greater concentration than the water and at a greater concentration than the film-forming solvent. The binding agent can include from about 2 wt % to about 30 wt % of a polymer binder dispersed in an aqueous liquid vehicle.

公开(公告)号：US12179263B2

公开(公告)日：2024-12-31

申请号：US17626988

申请日：2019-09-05

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

Inventor： Vladek Kasperchik ,  Jennifer Wu ,  Michael G. Monroe

IPC: C09D11/033 ,  B22F1/10 ,  B22F10/14 ,  B28B1/00 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y70/10 ,  C09D11/037 ,  C09D11/107 ,  C09D11/322 ,  B22F12/55

Abstract: A multi-fluid kit for three-dimensional printing can include a wetting agent and a binding agent. The wetting agent can include from 0 wt % to about 49.8 wt % water, from about 0.5 wt % to about 30 wt % film-forming organic solvent that can have a boiling point from greater than about 100° C. to about 350° C., and from about 30 wt % to about 99.5 wt % amphiphilic solvent that can have a boiling point from about 45° C. to less than about 100° C. The amphiphilic solvent can be water-miscible and can be present in the wetting agent at a greater concentration than the water and at a greater concentration than the film-forming solvent. The binding agent can include from about 2 wt % to about 30 wt % of a polymer binder dispersed in an aqueous liquid vehicle.

公开(公告)号：US11066566B2

公开(公告)日：2021-07-20

申请号：US16497520

申请日：2017-06-09

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

Inventor： Natalie Harvey ,  Jennifer Wu ,  Thomas W. Butler ,  Vladimir Jakubek

IPC: B41J2/175 ,  C09D11/324 ,  B41M5/00 ,  C09D11/102

Abstract: The present disclosure is drawn to an inkjet printing system including an ink composition and a microfluidic ejection assembly. The ink composition can include carbon black pigment, from 50 wt % to 80 wt % water, from 10 wt % to 40 wt % of an organic solvent system, and from 0.5 wt % to 6 wt % polyurethane. The microfluidic ejection assembly can include a drop generator for externally ejecting the ink composition, and a fluid pump for internally inducing microfluidic recirculation flow of the ink composition into the drop generator.

公开(公告)号：US20220134673A1

公开(公告)日：2022-05-05

申请号：US17417745

申请日：2019-07-07

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

Inventor： Daniel Mosher ,  Jennifer Wu ,  Vladek Kasperchik ,  David A. Champion

IPC: B29C64/393 ,  B33Y50/02 ,  G05B19/4099

Abstract: According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to determine physical characteristics of a build layer of build material particles. The instructions may also cause the processor to determine an adjustment to forming data based on the determined physical characteristics, the forming data to be used informing a subsequent build layer. The instructions may further cause the processor to apply the determined adjustment to the forming data for use in forming the subsequent build layer, in which portions of a three-dimensional (3D) object are to be formed in the build layer and the subsequent build layer.

公开(公告)号：US10267822B2

公开(公告)日：2019-04-23

申请号：US14763511

申请日：2013-01-31

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

Inventor： Jennifer Wu ,  Rodney L. Alley ,  Robert G. Walmsley ,  Donald J. Milligan

IPC: G01P15/125 ,  G01P15/08 ,  G01P1/02 ,  G01C19/5769 ,  B81B7/00

Abstract: A sensor having a particle barrier is described. In an example, a sensor includes: first and second electrode sets respectively disposed upon a planar support surface and a proof mass that is compliantly displaceable along a first axis substantially parallel to the planar support surface; and a first barrier disposed on the planar support around the first electrode set having a height less than a gap between the planar support and the proof mass to mitigate particle migration into the first or second electrode set.