公开(公告)号：US20210323228A1

公开(公告)日：2021-10-21

申请号：US16493050

申请日：2018-03-12

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

Inventor： James R Przybyla ,  Jason Hower ,  Michael G Monroe ,  Galen P Cook

IPC: B29C64/209 ,  B29C64/165 ,  B33Y30/00

Abstract: In one example in accordance with the present disclosure, an additive manufacturing module is described. The additive manufacturing module includes an agent distributor to selectively distribute a fabrication agent onto layers of build material. The agent distributor includes at least one fluidic ejection die. Each fluidic ejection die includes a plurality of nozzles arranged a long a die length and a die width, the plurality of nozzles arranged such that, for each set of neighboring nozzles, a respective subset of each set of neighboring nozzles are positioned at different die width positions along the width of the fluidic ejection die. The fluidic ejection die also includes, for each respective nozzle of the plurality of nozzles, a respective ejection chamber fluidically coupled to the respective nozzle and for each respective ejection chamber, at least one respective fluid feed hole fluidically coupled to the respective ejection chamber.

公开(公告)号：US11685115B2

公开(公告)日：2023-06-27

申请号：US16493050

申请日：2018-03-12

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

Inventor： James R Przybyla ,  Jason Hower ,  Michael G Monroe ,  Galen P Cook

IPC: B29C64/209 ,  B33Y30/00 ,  B29C64/165

CPC classification number: B29C64/209 ,  B29C64/165 ,  B33Y30/00

Abstract: In one example in accordance with the present disclosure, an additive manufacturing module is described. The additive manufacturing module includes an agent distributor to selectively distribute a fabrication agent onto layers of build material. The agent distributor includes at least one fluidic ejection die. Each fluidic ejection die includes a plurality of nozzles arranged along a die length and a die width, the plurality of nozzles arranged such that, for each set of neighboring nozzles, a respective subset of each set of neighboring nozzles are positioned at different die width positions along the width of the fluidic ejection die. The fluidic ejection die also includes, for each respective nozzle of the plurality of nozzles, a respective ejection chamber fluidically coupled to the respective nozzle and for each respective ejection chamber, at least one respective fluid feed hole fluidically coupled to the respective ejection chamber.

公开(公告)号：US11072088B2

公开(公告)日：2021-07-27

申请号：US15765088

申请日：2016-01-29

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

Inventor： Michael G Monroe ,  Vladek Kasperchik ,  Pavel Kornilovich ,  David A Champion

IPC: B28B1/00 ,  B33Y10/00 ,  B33Y30/00 ,  B28B11/24 ,  B28B17/00 ,  B33Y50/02

Abstract: According to an example, a three-dimensional (3D) printer may include a spreader to spread build material granules into a layer on a build area platform, a pressing die positioned above the layer of spread build material granules, in which the pressing die is to apply pressure onto the layer of build material granules to fragment the build material granules into primary particles to increase the density of the layer of build material granules, and a printhead to selectively deposit a fusing agent between the primary particles of the spread layer of build material granules.