公开(公告)号：WO2018190803A1

公开(公告)日：2018-10-18

申请号：PCT/US2017/026949

申请日：2017-04-11

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

Inventor： BRANHAM, Bradley ,  ROMAN, Justin M ,  SCHALK, Wesley R ,  KANG, Samantha ,  LAWS, Alexander

IPC: B29C64/153 ,  B29C64/307 ,  B29C64/321 ,  B29C64/314 ,  H05F1/02 ,  B33Y40/00 ,  B07B1/00

CPC classification number: B07B11/02 ,  B07B1/18 ,  B07B1/22 ,  B07B7/06 ,  B33Y80/00 ,  H05F1/00

Abstract: A device to de-ionize a build material, a method to de-ionize, and a 3D printer system including the device are disclosed. The device includes a housing having an outlet port and an enclosed sieve within the housing. An inlet port is coupled to a first end the enclosed sieve to provide the build material. A drive actuator is coupled to a second end of the enclosed sieve. The housing and the enclosed sieve may be made of a polymer selected from the build material and a chemically-similar polymer to the build material.

公开(公告)号：WO2019022740A1

公开(公告)日：2019-01-31

申请号：PCT/US2017/044093

申请日：2017-07-27

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

Inventor： LAWS, Alexander David ,  BOUCHER, Peter ,  KOEPL, Devin ,  KANG, Samantha ,  OPPENHEIMER, Charles Hugh ,  ROMAN, Justin M.

IPC: B29C64/307 ,  B29C64/20 ,  B29C64/141 ,  B33Y30/00 ,  B33Y40/00

Abstract: According to one aspect there is provided a build material processing apparatus for a 3D printing system. The system comprises a sieve to sieve build material, the sieve to receive a flow of build material, a vibrator mechanism to vibrate the sieve at a resonant frequency. A controller is provided to determine displacement characteristics of the sieve, determine, based on the displacement characteristics, a fill state of the sieve, and control a flow of build material to the sieve based on the determined fill state.

公开(公告)号：WO2019005017A1

公开(公告)日：2019-01-03

申请号：PCT/US2017/039568

申请日：2017-06-27

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

Inventor： LAWS, Alexander David ,  KANG, Samantha ,  OSBORNE, Jay

IPC: B29C64/35 ,  B33Y40/00

CPC classification number: B29C64/314 ,  B29C64/35 ,  B33Y40/00

Abstract: Printers and associated printer maintenance methods and apparatus are disclosed. An example printer includes a build material dispenser to dispense build material onto a work area; a contaminant filter to receive at least some of the build material from the work area, the contaminant filter being structured to filter contaminants from the build material received; and a drawer including the contaminant filter, the drawer to enable the contaminant filter to be removed for cleaning.

公开(公告)号：WO2019017955A1

公开(公告)日：2019-01-24

申请号：PCT/US2017/043079

申请日：2017-07-20

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

Inventor： WEST, Randall ,  LAWS, Alexander David ,  WINBURNE, Robert Lawrence ,  KANG, Samantha

IPC: B29C64/10 ,  B29C64/357 ,  B29C64/20 ,  B33Y40/00

CPC classification number: B29C64/357 ,  B29C64/153 ,  B29C64/165 ,  B29C64/20 ,  B33Y40/00

Abstract: In some examples, a build material recycling device of a three-dimensional (3D) printer can include an upper chamber including an inlet and a material separator coupled to the inlet, a classifier coupled to the upper chamber, and a lower chamber coupled to the classifier, where the classifier is located between the upper chamber and the lower chamber.

公开(公告)号：WO2019005015A1

公开(公告)日：2019-01-03

申请号：PCT/US2017/039542

申请日：2017-06-27

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

Inventor： KANG, Samantha ,  LAWS, Alexander David

IPC: B29C64/35 ,  B29C64/343 ,  B33Y40/00

CPC classification number: B29C64/35 ,  B29C64/153 ,  B29C64/205 ,  B33Y40/00

Abstract: In some examples, an apparatus includes an optical sensor to detect a material in a printing system, a light transmissive layer to pass light to the optical sensor, and a wiper actuatable to wipe a surface of the light transmissive layer to remove particles of the material away from the surface of the light transmissive layer.