公开(公告)号：US11541602B2

公开(公告)日：2023-01-03

申请号：US16607788

申请日：2018-04-06

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

Inventor： Luke Sosnowski ,  Justin M. Roman ,  David Soriano ,  Emiliano Gabriel Tolosa Gonzalez

IPC: B29C64/393 ,  B29C64/124 ,  B29C64/364 ,  B29C64/329 ,  B29C64/255 ,  B33Y40/00 ,  B33Y40/10 ,  B33Y10/00 ,  B33Y30/00

Abstract: Techniques for controlling moisture content of build material in a three dimensional printer are provided. An example system includes a build material vessel to contain the build material and receive a flow of air, and a humidifier to adjust the humidity of the air flowing into the build material vessel. The system also includes one or more sensors to determine a dew point of the air flowing into the build material vessel. The humidity level of the air flowing into the hopper is controlled by the humidifier to maintain the dew point at a level that will prevent condensation of water inside the build material vessel.

公开(公告)号：US11318682B2

公开(公告)日：2022-05-03

申请号：US16607742

申请日：2018-04-06

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

Inventor： Luke Sosnowski ,  Justin M. Roman

IPC: B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/364 ,  G05D22/02 ,  B33Y40/00

Abstract: A system for manufacturing three dimensional objects can include logic to apply a gas with at least one flow rate to a vessel of a three dimensional printer. The logic can also detect a permeability of a build material residing within the vessel, wherein the permeability is calculated based on a plurality of pressure values detected by a plurality of pressure sensors residing in the vessel, and apply the gas with a predetermined humidity level at a second flow rate to modify the permeability of the build material residing in the vessel. Furthermore, the logic can initialize manufacturing a three dimensional object with the build material in response to detecting the permeability of the build material is below a predetermined threshold.

公开(公告)号：US11097480B2

公开(公告)日：2021-08-24

申请号：US16093304

申请日：2016-05-12

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

Inventor： Justin M. Roman ,  Xavier Alonso Becerro ,  Ismael Chanclon Fernandez

IPC: B33Y40/00 ,  B29C64/25 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/35 ,  B29C64/364 ,  B29C67/00

Abstract: There are disclosed methods and apparatuses for 3D printing post-processing. The methods and apparatuses provide a container for an additive manufacturing system, the container for receiving a build volume of fused and unfused build material. The container comprises a connector for connecting the container to a pressure source, and at least one air hole to allow passage of air into or out of the container. When the connector is connected to the pressure source, air flows through the container between the connector and the at least one air hole so as to remove unfused build material from the container and to help cool the volume of build material.

公开(公告)号：US20210016510A1

公开(公告)日：2021-01-21

申请号：US16607788

申请日：2018-04-06

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

Inventor： Luke Sosnowski ,  Justin M. Roman ,  David Soriano ,  Emiliano Gabriel Tolosa Gonzalez

IPC: B29C64/393 ,  B29C64/255 ,  B29C64/364 ,  B29C64/329 ,  B29C64/124

Abstract: Techniques for controlling moisture content of build material in a three dimensional printer are provided. An example system includes a build material vessel to contain the build material and receive a flow of air, and a humidifier to adjust the humidity of the air flowing into the build material vessel. The system also includes one or more sensors to determine a dew point of the air flowing into the build material vessel. The humidity level of the air flowing into the hopper is controlled by the humidifier to maintain the dew point at a level that will prevent condensation of water inside the build material vessel.

公开(公告)号：US10477054B2

公开(公告)日：2019-11-12

申请号：US16112140

申请日：2018-08-24

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

Inventor： Wesley R. Schalk ,  Al Olson ,  Justin M. Roman ,  Jeffrey G. Bingham ,  Dennis J. Schissler ,  Andrew T. Davis

IPC: H04N1/00 ,  H04N1/031 ,  H04N1/12 ,  H04N5/367 ,  H04N1/028 ,  H04N1/04 ,  H04N1/10 ,  H04N1/03

Abstract: In one example, a document scanner has a fixed-position scan bar and a built-in translatable calibration target. The scan bar has a linear array of imaging elements aimed in an imaging direction. The calibration target is spaced apart from and parallel to the linear array, and has a planar surface orthogonal to the imaging direction spanning the length of the linear array. The target is translatable during a calibration in a direction in a plane of the surface.

公开(公告)号：US20190176395A1

公开(公告)日：2019-06-13

申请号：US16093304

申请日：2016-05-12

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

Inventor： Justin M. Roman ,  Xavier Alonso Becerro ,  Ismael Chanclon Fernandez

IPC: B29C64/25 ,  B29C64/35 ,  B29C64/364

Abstract: There are disclosed methods and apparatuses for 3D printing post-processing. The methods and apparatuses provide a container for an additive manufacturing system, the container for receiving a build volume of fused and unfused build material. The container comprises a connector for connecting the container to a pressure source, and at least one air hole to allow passage of air into or out of the container. When the connector is connected to the pressure source, there is generated a flow of air through the container between the connector and the at least one air hole so as to remove unfused build material from the container and to help cool the volume of build material.

公开(公告)号：US20190134889A1

公开(公告)日：2019-05-09

申请号：US16095931

申请日：2016-09-06

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

Inventor： Justin M. Roman ,  Xavier Alonso Becerro ,  Ismael Chanclon Fernandez

IPC: B29C64/141 ,  B29C64/227 ,  B29C64/255 ,  B29C64/314 ,  B29C64/393

Abstract: A build material management apparatus for a three dimensional printing system is provided having a plurality of conduits to connect to a respective plurality of ports of at least one build material container. Processing circuitry is provided to control coupling of a 5 pump interface to the plurality of conduits to independently set, for at least two of the plurality of conduits, a given air flow parameter for cooling build material in the at least one build material container. A build material container and machine executable instructions are also provide.d

公开(公告)号：US10195862B2

公开(公告)日：2019-02-05

申请号：US15570216

申请日：2015-06-11

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

Inventor： Justin M. Roman ,  Raymond Ehlers ,  Sam Sing ,  Jeffrey G. Bingham

IPC: B41J25/34 ,  B41J2/175

Abstract: An off-axis printhead assembly includes a printhead body that has an engagement element removably attachable to an attachment mechanism of a carriage of a printing system, the attachment mechanism of the carriage removably attachable to an on-axis printhead assembly. A fluid conduit interconnect is removably attached to the printhead body, the fluid conduit interconnect to connect to a fluid conduit to communicate printing fluid from at least one off-axis printing fluid supply through the fluid conduit interconnect to the printhead body.

公开(公告)号：US11338516B2

公开(公告)日：2022-05-24

申请号：US16075487

申请日：2017-07-20

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

Inventor： Wesley R. Schalk ,  Justin M. Roman ,  Randall West ,  Robert Lawrence Winburne

IPC: B33Y30/00 ,  B29C64/357 ,  B29C64/307 ,  B29B17/00 ,  B33Y10/00 ,  B33Y40/20

Abstract: A build material recovery system for a three-dimensional (3D) printer can include a selective solidification device to create a 3D object using build material, a build processing device to separate the 3D object from unfused build material, a material separating and conditioning device to condition the unfused build material, and a material storage device to store the conditioned build material.

公开(公告)号：US11305491B2

公开(公告)日：2022-04-19

申请号：US16607752

申请日：2018-04-06

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

Inventor： Justin M. Roman ,  Luke Sosnowski ,  David Soriano ,  Emiliano Gabriel Tolosa Gonzalez

IPC: B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/364 ,  B29C64/357 ,  B29C64/255

Abstract: A system for manufacturing three dimensional objects can include logic to detect, for at least one vessel, a moisture content level corresponding to a build material residing in the at least one vessel. The logic can also adjust a humidity level and a temperature of a gas and a conditioning agent applied to the at least one vessel, wherein the humidity level and the temperature are based on the moisture content level and a temperature of the build material residing in the at least one vessel. Additionally, the logic can initialize manufacturing a three dimensional object with the build material from the at least one vessel in response to detecting the moisture content level of the build material residing in the at least one vessel is within a predetermined range.