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公开(公告)号：US11745265B2
公开(公告)日：2023-09-05
申请号：US17457346
申请日：2021-12-02
Applicant: Xerox Corporation
Inventor： Collin A. Ladd , Paul J. McConville , Mariusz Mika , Kareem Tawil
CPC classification number: B22F10/22 , B22D23/003 , B22F12/50 , B33Y10/00 , B33Y30/00 , B22F2301/052 , B22F2302/45
Abstract: A three-dimensional (3D) metal object manufacturing apparatus is equipped with a liquid silicate application system to apply liquid silicate to a surface of a build platform prior to manufacture of a metal object. The liquid silicate layer is permitted to air dry and then the platform is heated to its operational temperature range for formation of a metal object with melted metal drops ejected by the apparatus. The liquid silicate layer forms a glassy, brittle layer on which the metal object is formed. This brittle layer is removed relatively easily with the object after the object is manufactured and the build platform is permitted to cool. The silicate layer improves the wetting of the surfaces of build platforms made with non-wetting materials, such as oxidized steel, while also preventing metal-to-metal welds with wetting materials, such as tungsten or nickel.
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公开(公告)号：US11607724B2
公开(公告)日：2023-03-21
申请号：US16991159
申请日：2020-08-12
Applicant: XEROX CORPORATION
Inventor： Viktor Sukhotskiy , David A. Mantell , Palghat S. Ramesh , Kareem Tawil , Alexander J. Fioravanti , Dinesh Krishna Kumar Jayabal
Abstract: A three-dimensional (3D) printer includes an ejector and a heating element configured to heat a solid printing material in the ejector, thereby causing the solid printing material to change to a liquid printing material within the ejector. The 3D printer also includes a coil wrapped at least partially around the ejector. The 3D printer also includes a power source configured to supply one or more pulses of power to the coil, which cause one or more drops of the liquid printing material to flow out of the ejector through a nozzle of the ejector. The 3D printer also includes a gas-controlling device configured to control a gas in the 3D printer.
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公开(公告)号：US20220201131A1
公开(公告)日：2022-06-23
申请号：US17131426
申请日：2020-12-22
Applicant: Xerox Corporation
Inventor： Rachel Lynn Tanchak , Erwin Ruiz , Carlos M. Terrero , Kareem Tawil , Linn C. Hoover
Abstract: A method is disclosed. For example, the method executed by a processor of a multi-function device (MFD) includes monitoring operating parameters of a component in the MFD, calculating a life set point for the component based on the operating parameters, and changing a default life set point for the component stored in a memory of the MFD to the life set point that is calculated based on the operating parameters.
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公开(公告)号：US20210046541A1
公开(公告)日：2021-02-18
申请号：US16991159
申请日：2020-08-12
Applicant: XEROX CORPORATION
Inventor： Viktor Sukhotskiy , David A. Mantell , Palghat S. Ramesh , Kareem Tawil , Alexander J. Fioravanti , Dinesh Krishna Kumar Jayabal
Abstract: A three-dimensional (3D) printer includes an ejector and a heating element configured to heat a solid printing material in the ejector, thereby causing the solid printing material to change to a liquid printing material within the ejector. The 3D printer also includes a coil wrapped at least partially around the ejector. The 3D printer also includes a power source configured to supply one or more pulses of power to the coil, which cause one or more drops of the liquid printing material to flow out of the ejector through a nozzle of the ejector. The 3D printer also includes a gas-controlling device configured to control a gas in the 3D printer.
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公开(公告)号：US20240058870A1
公开(公告)日：2024-02-22
申请号：US17820468
申请日：2022-08-17
Applicant: XEROX CORPORATION
Inventor： Kareem Tawil
Abstract: A nozzle for a 3D printer includes a structure and a layer positioned at least partially within the structure. The layer is configured to decrease a settling time of a meniscus of a printing material after a drop of the printing material is ejected from the nozzle.
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Patent Agency Ranking
公开(公告)号：US20240058866A1
公开(公告)日：2024-02-22
申请号：US17820481
申请日：2022-08-17
Applicant: XEROX CORPORATION
Inventor： Kareem Tawil
Abstract: A method includes forming or positioning a layer within a nozzle of a 3D printer. The layer is configured to decrease a settling time of a meniscus of a printing material after a drop of the printing material is ejected from the nozzle.
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公开(公告)号：US11697296B2
公开(公告)日：2023-07-11
申请号：US17216175
申请日：2021-03-29
Applicant: XEROX CORPORATION
Inventor： Douglas K. Herrmann , Linn C. Hoover , Patrick Jun Howe , Joseph C. Sheflin , Robert Jian Zhang , John Patrick Baker , Brian M. Balthasar , Glenn Batchelor , Anthony Salvatore Condello , Ali R. Dergham , Timothy P. Foley , Richard A. Kalb , Peter John Knausdorf , Jason M. LeFevre , Jack T. Lestrange , Chu-Heng Liu , Paul J. McConville , Seemit Praharaj , Palghat S. Ramesh , Erwin Ruiz , Emmett James Spence , Rachel Lynn Tanchak , Kareem Tawil , Carlos M. Terrero , Megan Zielenski
CPC classification number: B41J11/0085
Abstract: A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead arranged to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device comprises a movable support surface to transport a print medium along a process direction through the deposition region, the media transport device holding the print medium against the movable support surface by vacuum suction. The air flow control system is arranged to selectively flow air through the opening of the carrier plate between the carrier plate and the printhead based on a location of a print medium transported by the media transport device relative to the printhead.
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公开(公告)号：US20230182201A1
公开(公告)日：2023-06-15
申请号：US18166104
申请日：2023-02-08
Applicant: XEROX CORPORATION
Inventor： Viktor Sukhotskiy , David A. Mantell , Palghat S. Ramesh , Kareem Tawil , Alexander J. Fioravanti , Dinesh Krishna Kumar Jayabal
CPC classification number: B22D23/003 , B33Y50/02 , B33Y30/00 , B33Y10/00
Abstract: A method includes ejecting a plurality of drops of a build material from a nozzle of a 3D printer. The build material cools and solidifies after being ejected to form a 3D object. The method also includes controlling an oxidation of the drops, the 3D object or both to create different oxidation levels in first and second portions of the 3D object.
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公开(公告)号：US20230173580A1
公开(公告)日：2023-06-08
申请号：US17457346
申请日：2021-12-02
Applicant: Xerox Corporation
Inventor： Collin A. Ladd , Paul J. McConville , Mariusz Mika , Kareem Tawil
CPC classification number: B22F10/22 , B33Y10/00 , B33Y30/00 , B22D23/003 , B22F12/50 , B22F2301/052 , B22F2302/45
Abstract: A three-dimensional (3D) metal object manufacturing apparatus is equipped with a liquid silicate application system to apply liquid silicate to a surface of a build platform prior to manufacture of a metal object. The liquid silicate layer is permitted to air dry and then the platform is heated to its operational temperature range for formation of a metal object with melted metal drops ejected by the apparatus. The liquid silicate layer forms a glassy, brittle layer on which the metal object is formed. This brittle layer is removed relatively easily with the object after the object is manufactured and the build platform is permitted to cool. The silicate layer improves the wetting of the surfaces of build platforms made with non-wetting materials, such as oxidized steel, while also preventing metal-to-metal welds with wetting materials, such as tungsten or nickel.
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公开(公告)号：US20250073996A1
公开(公告)日：2025-03-06
申请号：US18239485
申请日：2023-08-29
Applicant: XEROX CORPORATION
Inventor： Erwin Ruiz , Timothy G. Shelhart , Nadish Anand , James Root , Derek A. Bryl , Brian Gillis , Matthew R. McLaughlin , Peter Knausdorf , Wade F. Thomas , Kareem Tawil , Prince Joseph , Fredrik Perman
IPC: B29C64/295 , B29C64/209 , B29C64/245
Abstract: A 3D printer configured to print a 3D part includes an ejector having a nozzle that is configured to eject drops of a build material. The 3D printer also includes a build plate positioned below the nozzle. The drops land and solidify on the build plate to form at least a portion of the 3D part. The 3D printer also includes a first heater positioned under or within the build plate. The first heater is configured to heat the build plate and the 3D part thereon. The 3D printer also includes a second heater positioned laterally-offset from the build plate. The second heater is configured to heat a volume of air between the nozzle and an upper surface of the 3D part. The 3D printer also includes an enclosure. The nozzle, the build plate, the first heater, and the second heater are positioned at least partially within the enclosure.
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