公开(公告)号：US09962960B2

公开(公告)日：2018-05-08

申请号：US15619054

申请日：2017-06-09

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

Inventor： Keith Jariabka ,  Alvin Post

IPC: B41J11/00

CPC classification number: B41J11/0045

Abstract: An example support structure assembly is described as including a brace, a media guide, and a compression member. An example brace includes a structure defining a mount area on a first surface of the brace and a first protrusion extending from a second surface of the brace. An example media guide includes a blade member, a hinge member, and a second protrusion extending away from the hinge member. An example compression member is coupled to the first protrusion of the brace and the second protrusion of the media guide to place a force on the media guide where a vector defines the force with a first component magnitude in a first direction towards the mount area that is greater than a second component magnitude in a second direction away from the mount area.

公开(公告)号：US20210331384A1

公开(公告)日：2021-10-28

申请号：US16608923

申请日：2018-07-31

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

Inventor： Alvin Post ,  Brent Ewald

IPC: B29C64/165 ,  B29C64/218 ,  B29C64/236 ,  B29C64/268 ,  B29C64/282 ,  B29C64/232 ,  B29C64/209 ,  B33Y10/00

Abstract: In an example implementation, a method of fusing a 3D object layer includes, with a non-scanning, stationary energy system positioned over a work area, simultaneously irradiating the entirety of the work area uniformly with fusing light, wherein a carriage casts a shadow onto a portion of the work area and prevents fusing light from irradiating the portion of the work area when positioned between the fusing light and the work area. The method includes, with a first pass of the carriage from a first side to a second side of the work area, spreading a first layer of build material and dispensing a liquid fusing agent onto the first layer such that exposure time to the fusing light is unequal across the first layer, and with a second pass, returning the carriage to the first side. The method includes spreading a next layer of build material and dispensing a liquid fusing agent onto the next layer with a third pass of the carriage from the first side to the second side, such that the exposure time to the fusing light is made equal across the first layer.

公开(公告)号：US09694603B1

公开(公告)日：2017-07-04

申请号：US15053672

申请日：2016-02-25

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

Inventor： Keith Jariabka ,  Alvin Post

IPC: B41J2/15 ,  B41J11/00

CPC classification number: B41J11/0045

Abstract: An example support structure assembly is described as including a brace, a media guide, and a compression member. An example brace includes a structure defining a mount area on a first surface of the brace and a first protrusion extending from a second surface of the brace. An example media guide includes a blade member, a hinge member, and a second protrusion extending away from the hinge member. An example compression member is coupled to the first protrusion of the brace and the second protrusion of the media guide to place a force on the media guide where a vector defines the force with a first component magnitude in a first direction towards the mount area that is greater than a second component magnitude in a second direction away from the mount area.

公开(公告)号：US11383434B2

公开(公告)日：2022-07-12

申请号：US16608923

申请日：2018-07-31

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

Inventor： Alvin Post ,  Brent Ewald

IPC: B29C64/165 ,  B33Y10/00 ,  B29C64/282 ,  B29C64/232 ,  B29C64/209 ,  B29C64/236 ,  B29C64/268 ,  B29C64/218

Abstract: In an example, a method of fusing a 3D object layer with a stationary energy system positioned and a carriage that casts a shadow onto the work area includes, with one pass of the carriage moving over the work area at a constant speed, dispensing a liquid fusing agent onto a first layer of build material in a pattern corresponding to an object slice such that the exposure time of the patterned build material is unequal across the first layer and, with another pass of the carriage moving over the work area in the same direction and at the same constant speed as the first pass, spreading the next layer of build material over the first layer such that the exposure time of the patterned build material in the first layer is made equal across the first layer.

公开(公告)号：US20210008803A1

公开(公告)日：2021-01-14

申请号：US16509060

申请日：2019-07-11

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

Inventor： Eric Scott Collins ,  Joshua Morgan Hunsaker ,  Alvin Post

IPC: B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/165 ,  B29C64/218

Abstract: In one example, a roller control process for a 3D printer includes stopping the layering roller rotating at angular home before the roller reaches linear home at the end of a fusing pass, measuring the duration between when the roller reaches angular home and when the roller reaches linear home, and, if the duration exceeds a threshold, then stopping the roller rotating at angular home at a distance closer to linear home in subsequent fusing passes until the duration does not exceed the threshold.

公开(公告)号：US11351733B2

公开(公告)日：2022-06-07

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 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/295 ,  B29C64/165

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：US11214010B2

公开(公告)日：2022-01-04

申请号：US16509060

申请日：2019-07-11

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

Inventor： Eric Scott Collins ,  Joshua Morgan Hunsaker ,  Alvin Post

IPC: B29C64/393 ,  B33Y10/00 ,  B29C64/218 ,  B33Y50/02 ,  B29C64/165 ,  B33Y30/00

Abstract: In one example, a roller control process for a 3D printer includes stopping the layering roller rotating at angular home before the roller reaches linear home at the end of a fusing pass, measuring the duration between when the roller reaches angular home and when the roller reaches linear home, and, if the duration exceeds a threshold, then stopping the roller rotating at angular home at a distance closer to linear home in subsequent fusing passes until the duration does not exceed the threshold.

公开(公告)号：US20170274675A1

公开(公告)日：2017-09-28

申请号：US15619054

申请日：2017-06-09

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

Inventor： Keith Jariabka ,  Alvin Post

IPC: B41J11/00

CPC classification number: B41J11/0045

Abstract: An example support structure assembly is described as including a brace, a media guide, and a compression member. An example brace includes a structure defining a mount area on a first surface of the brace and a first protrusion extending from a second surface of the brace. An example media guide includes a blade member, a hinge member, and a second protrusion extending away from the hinge member. An example compression member is coupled to the first protrusion of the brace and the second protrusion of the media guide to place a force on the media guide where a vector defines the force with a first component magnitude in a first direction towards the mount area that is greater than a second component magnitude in a second direction away from the mount area.