公开(公告)号：US20210206066A1

公开(公告)日：2021-07-08

申请号：US16075614

申请日：2017-04-21

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

Inventor： Brent EWALD

IPC: B29C64/218 ,  B29C64/343 ,  B29C64/321 ,  B29C64/357 ,  B29C64/393

Abstract: It is disclosed a 3D printing system and a build material spreading method for a 3D printer that comprises: moving a spreader in a first pass in a first direction over a pile of build material at a first separation distance from a dosing surface thereby sweeping a first amount of build material; modify the first separation distance by the distance adjustment unit to a second separation distance; and moving the spreader in a second pass in a second direction towards the build surface to sweep a second amount of build material in a direction towards the build surface

公开(公告)号：US20210178689A1

公开(公告)日：2021-06-17

申请号：US16074404

申请日：2016-09-22

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

Inventor： Brent EWALD ,  Michael RODE

IPC: B29C64/329 ,  B33Y40/00 ,  B29C64/343 ,  G01F11/24

Abstract: In one example, a device to dispense a powder includes a hopper, an outlet from the hopper, a dispenser to dispense powdered build powder from the hopper through the outlet, and an agitator movable at the outlet intermittently at the urging of the dispenser.

公开(公告)号：US20220134665A1

公开(公告)日：2022-05-05

申请号：US17578153

申请日：2022-01-18

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

Inventor： Brent EWALD ,  John Geile ,  Tristan Dudik ,  Michael Rode

IPC: B29C64/321 ,  B33Y30/00 ,  B33Y40/00 ,  B22F12/52

Abstract: In order to have ensure a proper dosing of a 3D printing system, it is disclosed a feeding mechanism for feeding build material to a surface that comprises: a receptacle to receive build material; and an outlet of the build material having a substantially quadrilateral opening with a first dimension and a second dimension orthogonal to one another; the outlet further comprising a third dimension orthogonal to the first dimension and the second dimension defining the height of the outlet, and the feeding mechanism being to selectively feed build material from to the receptacle through the outlet onto a surface as the feeding mechanism moves along a travel direction over the surface, being such travel direction parallel to the first dimension of the outlet, the feeding mechanism further comprising an actuator to modify the magnitude of at least one of the second dimension or the third dimension outlet.

公开(公告)号：US20210283844A1

公开(公告)日：2021-09-16

申请号：US16608348

申请日：2018-01-31

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

Inventor： Alvin POST ,  Brent EWALD

IPC: B29C64/286 ,  B33Y30/00 ,  B22F12/44 ,  B22F12/63 ,  B29C64/218

Abstract: A retractable shade disposed between build material and a lamp facilitates uniform thermal processing across the length of a build bed by blocking emitted radiation from the lamp during movement of the pen across the build bed.

公开(公告)号：US20210206077A1

公开(公告)日：2021-07-08

申请号：US16075616

申请日：2017-07-27

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

Inventor： Mike RODE ,  Brent EWALD ,  John GEILE ,  Daniil POPOV ,  Tristan DUDIK

IPC: B29C64/255 ,  B33Y30/00 ,  B29C64/205 ,  B22F12/50 ,  B28B1/00

Abstract: In some examples, a lid of a build material carriage of a three-dimensional (3D) printer can include a lid covering an opening of the build material carriage while the lid is in an engaged position, and a mechanism to keep the lid over the opening of the build material carriage while the lid is in the engaged position, where the lid uncovers the opening of the build material carriage when the build material carriage is moved to receive build material via the opening during a build material fill process such that the lid is in a disengaged position.

公开(公告)号：US20210206088A1

公开(公告)日：2021-07-08

申请号：US16075913

申请日：2017-04-21

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

Inventor： Brent EWALD ,  Mike RODE ,  Tristan DUDIK ,  John GEILE

IPC: B29C64/329 ,  B29C64/245 ,  B33Y40/00 ,  B33Y30/00 ,  B33Y10/00

Abstract: A 3D print material shut-off apparatus includes a discharge opening isolator, disposed in a first region of a 3D printer and a print material hopper including a discharge opening at a bottom portion of the print material hopper to discharge a print material from the print material hopper in a second region of the 3D printer adjacent to the first region. The discharge opening isolator is to occlude the discharge opening of the print material hopper when the print material hopper is in the first region.

公开(公告)号：US20210206085A1

公开(公告)日：2021-07-08

申请号：US16075481

申请日：2017-06-28

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

Inventor： Mike RODE ,  John GEILE ,  Haseeb YUSEF ,  Tristan DUDIK ,  Pierre J. KAISER ,  Sam SCOFIELD ,  Brent EWALD

IPC: B29C64/329 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/255 ,  B33Y40/00

Abstract: In one example, a refill control system to control the flow of powdered build material to a dispenser to periodically refill the dispenser with powdered build material. In one example, the refill control system includes a container to hold powered build material and a valve operable between a closed position to block a flow of powdered build material from the container to the dispenser and an open position to not block the flow of powdered build material from the container to the dispenser. The container is movable from a first position to a second position to connect the container to the dispenser and from the second position to the first position to disconnect the container from the dispenser.

公开(公告)号：US20190039301A1

公开(公告)日：2019-02-07

申请号：US16075444

申请日：2016-10-27

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

Inventor： Haseeb YUSEF ,  William WINTERS ,  Jordi GIMENEZ MANENT ,  Xavier GASSO PUCHAL ,  Eduardo RUIZ MARTINEZ ,  Drew BERWAGER ,  Brent EWALD ,  Micah ABERTH

IPC: B29C64/218 ,  B33Y30/00

Abstract: According to an example, a recoater for a three-dimensional (3D) printer may include a cylindrical element having a surface to spread build material particles. The build material particles may have a specified average dimension and the surface may include a plurality of depressions that have dimensions that are smaller than the specified average dimension of the build material particles.

公开(公告)号：US20210197482A1

公开(公告)日：2021-07-01

申请号：US16075175

申请日：2017-04-20

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

Inventor： Brent EWALD ,  Pierre J. KAISER ,  John GEILE ,  Mike Rode

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/209

Abstract: Printers and associated printer maintenance methods and apparatus are disclosed. A printer including a work area; a temperature sensor to measure a first temperature value at a first region of the work area and a second temperature value at a second region of the work area; and a recoater to distribute a first amount of build material onto the first region and a second amount of the build material onto the second region in response to the first temperature value being a threshold different than the second temperature value.

公开(公告)号：US20210197476A1

公开(公告)日：2021-07-01

申请号：US16075015

申请日：2017-04-21

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

Inventor： Brent EWALD

IPC: B29C64/357 ,  B29C64/153 ,  B22F10/28 ,  B22F10/73 ,  B33Y40/00 ,  B33Y10/00 ,  B33Y30/00

Abstract: A three-dimensional (3D) printer and method for feeding powder to a build platform of the 3D printer, Incidental powder lost from the build platform is collected and fed to the build platform.