公开(公告)号：US20210206091A1

公开(公告)日：2021-07-08

申请号：US16075493

申请日：2017-06-27

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

Inventor： Samantha KANG ,  Alexander David LAWS

IPC: B29C64/35 ,  B29C64/314 ,  B29C64/357 ,  B29C64/165 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y50/00 ,  B29C64/386

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.

公开(公告)号：US20210205850A1

公开(公告)日：2021-07-08

申请号：US16075631

申请日：2017-04-11

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

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

IPC: B07B11/02 ,  B07B1/22 ,  B07B7/06 ,  H05F3/04 ,  B33Y30/00 ,  B33Y40/00 ,  B29C64/321 ,  B29C64/314

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：US20210221062A1

公开(公告)日：2021-07-22

申请号：US16075494

申请日：2017-06-27

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

Inventor： Alexander David LAWS ,  Samantha KANG ,  Jay OSBORNE

IPC: B29C64/35 ,  B29C64/25

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：US20210206098A1

公开(公告)日：2021-07-08

申请号：US16075484

申请日：2017-07-20

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

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

IPC: B29C64/357 ,  B29C64/314 ,  B29C64/35 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10

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：US20210197469A1

公开(公告)日：2021-07-01

申请号：US16076359

申请日：2017-07-27

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

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

IPC: B29C64/314 ,  B29C64/393 ,  B29C64/357 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

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.