公开(公告)号：WO2019147239A1

公开(公告)日：2019-08-01

申请号：PCT/US2018/015147

申请日：2018-01-25

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

Inventor： RODE, Mike ,  GEILE, John ,  KAISER, Pierre J. ,  SCHALK, Wesley R. ,  BARNES, Arthur H.

IPC: B29C64/218 ,  B29C64/255 ,  B33Y30/00 ,  B29C64/329 ,  B33Y40/00

Abstract: A build material dispensing device may include a material spreader to spread an amount of build material along a build platform, and at least one hopper for dispensing the build material. The at least one hopper dispenses a plurality of doses of the build material in front of the progression of the material spreader as the material spreader is moved over the build platform.

公开(公告)号：WO2019005042A1

公开(公告)日：2019-01-03

申请号：PCT/US2017/039758

申请日：2017-06-28

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

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

IPC: B29C64/329 ,  B33Y40/00

CPC classification number: B33Y40/00 ,  B29C64/153 ,  B29C64/205 ,  B29C64/255 ,  B29C64/329 ,  B33Y30/00

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：WO2018194664A1

公开(公告)日：2018-10-25

申请号：PCT/US2017/028887

申请日：2017-04-21

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

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

IPC: B29C64/329 ,  B33Y40/00

CPC classification number: B29C64/329 ,  B29C64/241 ,  B33Y40/00

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：WO2019022744A1

公开(公告)日：2019-01-31

申请号：PCT/US2017/044145

申请日：2017-07-27

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

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

IPC: B29C64/255 ,  B33Y30/00

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：WO2018194625A1

公开(公告)日：2018-10-25

申请号：PCT/US2017/028647

申请日：2017-04-20

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

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

IPC: B29C64/10 ,  B29C64/205 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/393 ,  B29C64/205 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

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.