公开(公告)号：US20210268727A1

公开(公告)日：2021-09-02

申请号：US16075672

申请日：2017-01-31

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

Inventor： Ning GE ,  Steven J. SIMSKE ,  Andrew E. FITZHUGH ,  Lihua ZHAO

IPC: B29C64/165 ,  B29C64/214 ,  B29C64/371 ,  B29C64/245 ,  B29C64/286 ,  B29C64/357 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: According to an example, an apparatus may include an agent delivery device to selectively deliver an agent onto a layer of build material particles. The apparatus may also include an energy source to apply energy onto the layer of build material particles to selectively fuse the build material particles in the layer based upon the locations at which the agent was delivered and a chamber formed of a plurality of walls, in which the agent delivery device and the energy source are housed inside the chamber. The apparatus may further include a vapor source to supply vapor into the chamber to wet the build material particles inside the chamber.

公开(公告)号：US20210197454A1

公开(公告)日：2021-07-01

申请号：US16076338

申请日：2017-04-21

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

Inventor： Kristopher J. ERICKSON ,  Lihua ZHAO

IPC: B29C64/165 ,  B29C64/295 ,  B29C64/268 ,  B29C64/209

Abstract: A system for forming a multiple layer object, the system including: a spreader to form a layer of polymer particles, the polymer particles having a melting temperature (Tm) of at least 250° C.; a fluid ejection head to selectively deposit a first fusing agent on a first portion of the layer and selectively deposit a second fusing agent on a second portion of the layer, wherein the fluid ejection head does not deposit the fusing agent on a third portion of the layer; and a heat source to heat the first portion and second portion, wherein the first portion is part of the multiple layer object and the second portion is not part of the multiple layer object and the second portion raises a temperature of polymer particles in a subsequent layer.

公开(公告)号：US20210178686A1

公开(公告)日：2021-06-17

申请号：US16076514

申请日：2017-04-18

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

Inventor： Kristopher J. ERICKSON ,  Thomas C. ANTHONY ,  Lihua ZHAO

IPC: B29C64/30 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20 ,  B29C64/165 ,  B29C64/393 ,  B29C71/02 ,  B29C71/00 ,  C23C18/16 ,  B33Y50/02 ,  C25D5/56

Abstract: A device includes a coater, a dispenser, and a treatment portion. The coater is to coat, layer-by-layer, a build material relative to a build pad to form a 3D object. The dispenser is to at least dispense a fluid including a first at least potentially electrically conductive material. In at least some selected locations of an external surface of the 3D object. The treatment portion is to treat the 3D object to substantially increase electrically conductivity on the external surface of the 3D object at the at least some selected locations.

公开(公告)号：US20190070785A1

公开(公告)日：2019-03-07

申请号：US16077672

申请日：2017-01-27

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

Inventor： Sunil KOTHARI ,  Jun ZENG ,  Kristopher LI ,  Goffril OBEGI ,  Lihua ZHAO ,  Gary J. DISPOTO ,  Viseth SEAN ,  Tod HEILES

IPC: B29C64/393 ,  G06F17/40 ,  G05B19/4097

Abstract: In some examples, a request to print a first three-dimensional (3D) part is received. In response to determining that the first 3D part is not similar to any 3D part referred to by an information base, a representation of the first 3D part is extracted, an indication to conduct an operation to produce a design rule for the first 3D part is sent. In response to determining that the first 3D part is similar to a matching 3D part referred to by the information base, a design rule for the matching 3D part is retrieved to print the first 3D part, where the design rule for the matching 3D part specifies a dependency of a property of the matching 3D part on an aspect associated with printing the matching 3D part.

公开(公告)号：US20190056717A1

公开(公告)日：2019-02-21

申请号：US16077669

申请日：2017-01-27

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

Inventor： Sunil KOTHARI ,  Kristopher LI ,  Viseth SEAN ,  Jun ZENG ,  Lihua ZHAO ,  Goffril OBEGI ,  Gary J. DISPOTO ,  Tod HEILES

IPC: G05B19/4099 ,  B33Y50/02 ,  B29C64/393 ,  B22F3/105

Abstract: In some examples, a distribution of values of a property of a given layer to be printed as part of three-dimensional (3D) printing is predicted, wherein the predicting is based on a distribution of values of the property in a previous layer that has been printed as part of the 3D printing. 3D printing of an object is controlled based on the predicted distribution of values of the property of the given layer.

公开(公告)号：US20170315058A1

公开(公告)日：2017-11-02

申请号：US15646041

申请日：2017-07-10

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

Inventor： Zhang-Lin Zhou ,  Lihua ZHAO ,  Steven J. BARCELO ,  Zhiyong LI

IPC: G01N21/64 ,  B82Y20/00 ,  B82Y40/00 ,  B82Y15/00 ,  G01N21/65

CPC classification number: G01N21/648 ,  B82Y15/00 ,  B82Y20/00 ,  B82Y40/00 ,  G01N21/6428 ,  G01N21/658 ,  G01N2021/6441

Abstract: A method for forming a surface-enhanced fluorescence spectroscopy (SEFS) apparatus may include depositing a plurality of surface-enhanced spectroscopy (SES) elements onto respective tips of a plurality of nano-fingers, wherein the nano-fingers are arranged in sufficiently close proximities to each other to enable the tips of a group of adjacent nano-fingers to come into sufficiently close proximities to each other to enable the SES elements on the tips to trap fluorescent probe molecules that are to bind with target molecules when the nano-fingers are partially collapsed.