公开(公告)号：US20240190071A1

公开(公告)日：2024-06-13

申请号：US18063024

申请日：2022-12-07

Applicant: XEROX CORPORATION

Inventor： Patrick Y. Maeda ,  Daniel Bullard ,  Dogan Timucin

IPC: B29C64/273 ,  B29C64/112 ,  B29C64/209 ,  B29C64/245 ,  B29C64/295 ,  B29C64/393

CPC classification number: B29C64/273 ,  B29C64/112 ,  B29C64/209 ,  B29C64/245 ,  B29C64/295 ,  B29C64/393 ,  B33Y10/00

Abstract: An additive manufacturing device includes a stage configured to support a substrate. The device also includes a printhead disposed above the stage. The printhead is configured to heat a build material to a molten build material and to deposit the molten build material on the substrate in the form of droplets to fabricate an article. The device also includes a controlled heating and ablation system disposed proximal the printhead. The controlled heating and ablation system is configured to heat the substrate and ablate oxides on a surface of the substrate.

公开(公告)号：US20240189895A1

公开(公告)日：2024-06-13

申请号：US18063030

申请日：2022-12-07

Applicant: XEROX CORPORATION

Inventor： Daniel Bullard ,  Patrick Y. Maeda ,  Warren Jackson ,  David K. Biegelsen

IPC: B22D23/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B22D23/003 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A 3D printing system includes an ejector configured to receive a build material. The ejector includes a nozzle. The ejector is configured to eject a plurality of drops of the build material through the nozzle. The 3D printing system also includes a substrate positioned below the nozzle. The drops fall toward the substrate after being ejected from the nozzle. The drops form a 3D object on the substrate. The 3D printing system also includes a power source configured to generate an alternating electrical current. The 3D printing system also includes an electrode configured to generate a plasma in response to receiving the alternating electrical current. The drops, the 3D object, the substrate, or a combination thereof are positioned at least partially within the plasma.

公开(公告)号：US20240424568A1

公开(公告)日：2024-12-26

申请号：US18213681

申请日：2023-06-23

Applicant: Xerox Corporation

Inventor： Dogan Timucin ,  Patrick Y. Maeda ,  Adrian Lew

IPC: B22F12/41 ,  B22F10/22 ,  B22F12/53 ,  B22F12/90 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: Techniques for laser-assisted additive manufacturing are disclosed. An example three-dimensional (3D) printer includes a platen having a surface to support a part during fabrication of the part. The 3D printer also includes an ejector head arranged above the surface of the platen. The ejector head is to eject build material toward the surface of the platen to fabricate the part. The 3D printer also includes a laser heating system to heat a target portion of the part during the fabrication of the part to improve a bond between the build material and the target portion of the part. The laser heating system includes a laser to output a laser beam that exhibits a non-gaussian beam profile.

公开(公告)号：US20250058376A1

公开(公告)日：2025-02-20

申请号：US18450846

申请日：2023-08-16

Applicant: XEROX CORPORATION

Inventor： Patrick Y. Maeda ,  Adrian Lew ,  Dogan Timucin

IPC: B22D23/00 ,  B22D46/00 ,  B33Y10/00 ,  B33Y30/00

Abstract: A system and method of three-dimensional printing that includes heating a portion of a build surface by impinging multiple laser pulses onto the build surface in a time controlled pattern to provide a desired heated build surface prior to depositing a molten material onto the build surface. The time controlled pattern of laser pulses includes at least one heating period and at least one cooling period, and the time for the cooling period is determined by the cooling time of the build surface material, and the temperature differences between the original temperature of the build surface and the desired temperature of the build surface material.