公开(公告)号：US20210206108A1

公开(公告)日：2021-07-08

申请号：US16075172

申请日：2017-04-08

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

Inventor： Alvin POST ,  Arthur H. BARNES ,  Sheldon BERNARD ,  Matthew A. SHEPHERD ,  Todd GOYEN

IPC: B29C64/393 ,  B29C64/295 ,  B33Y30/00 ,  B29C64/165 ,  B33Y50/02

Abstract: In one example, a fusing system for an additive manufacturing machine includes a fusing lamp to heat build material in the work area, a heat sensor to measure a heat output of the fusing lamp, and a controller operatively connected to the fusing lamp and to the heat sensor to adjust the heat output of the fusing lamp to the work area based on a heat output measured by the heat sensor.

公开(公告)号：US20210199508A1

公开(公告)日：2021-07-01

申请号：US16074896

申请日：2017-04-21

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

Inventor： Joshua Peter YASBEK ,  Todd GOYEN ,  David SORIANO FOSAS ,  Asa WEISS ,  Arthur H. BARNES

IPC: G01J5/10 ,  G01J5/06

Abstract: In an example, an apparatus is described that includes a non-resistive heat source, a thermally conductive face, and a temperature detector. The thermally conductive face has a controlled long-wave infrared emissivity and is in thermal contact with the non-resistive heat source. The temperature detector is positioned to detect a temperature of the thermally conductive face.

公开(公告)号：US20210197451A1

公开(公告)日：2021-07-01

申请号：US16075184

申请日：2017-04-09

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

Inventor： Arthur H. BARNES

IPC: B29C64/165 ,  B29C64/314 ,  B29C64/218 ,  B29C64/236 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B29C71/02 ,  B33Y40/10 ,  B33Y40/20 ,  B33Y70/00

Abstract: In one example, a processor readable medium having instructions thereon that when executed cause a fusing system for an additive manufacturing machine to, during a first carriage pass, preheat build material in a layer of unfused build material; during the first carriage pass and/or during a second carriage pass, dispense a liquid fusing agent on to preheated unfused build material in the layer and then, during the second carriage pass, irradiate build material in the layer on which the fusing agent has been dispensed with a fusing light; and during a third carriage pass, irradiate the fused build material with the fusing light; and during a fourth carriage pass, irradiate the fused build material with the fusing light and then actively cool the fused build material.

公开(公告)号：US20210078255A1

公开(公告)日：2021-03-18

申请号：US17050316

申请日：2018-10-29

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

Inventor： Ferran ESQUIUS BERENGUERAS ,  Esteve COMAS CESPEDES ,  Ismael FERNANDEZ AYMERICH ,  Arthur H. BARNES

IPC: B29C64/277 ,  B29C64/153 ,  B33Y30/00 ,  B22F3/105

Abstract: A reflector assembly for an additive manufacturing apparatus comprises a first reflector comprising a first reflector section having a first reflecting surface and a second reflector comprising a second reflector section having a second reflecting surface. The first reflector section is for reflecting radiation from a first radiating element located, in use, proximate to the first reflecting surface, and the second reflector section is for reflecting radiation from a second radiating element located, in use, proximate to the second reflecting surface. The first reflector section and the second reflector section are each formed of a ceramic material.

公开(公告)号：US20210069968A1

公开(公告)日：2021-03-11

申请号：US16074924

申请日：2017-04-06

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

Inventor： Arthur H. BARNES ,  Matthew A. SHEPHERD ,  Todd GOYEN ,  Alvin POST ,  Sheldon BERNARD

IPC: B29C64/165 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/295 ,  B29C64/205

Abstract: In one example, a fusing system for an additive manufacturing machine includes a warmer to preheat unfused build material in a work area, a dispenser to dispense a fusing agent on to build material in the work area in a pattern corresponding to an object slice, a fusing lamp to fuse patterned build material in the work area, a temperature sensor to measure a temperature of preheated unfused build material in the work area, and a controller operatively connected to the warmer and to the temperature sensor to adjust a heat output of the warmer to the work area based on a temperature measured by the temperature sensor.

公开(公告)号：US20190039303A1

公开(公告)日：2019-02-07

申请号：US16075430

申请日：2016-10-19

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

Inventor： Arthur H. BARNES ,  Wesley R. SCHALK ,  Matthew A. SHEPHERD

IPC: B29C64/236 ,  B29C64/165 ,  B29C64/209 ,  B29C64/264 ,  B29C64/386

Abstract: In one example, a fusing system for an additive manufacturing machine includes a first carriage carrying a layering device and a fusing lamp, and a second carriage carrying a fusing agent dispenser. The first carriage and the second carriage are movable back and forth over the work area along the same line of motion so that the first carriage follows the second carriage in one direction and the second carriage follows the first carriage in the other direction.