公开(公告)号：US20250153431A1

公开(公告)日：2025-05-15

申请号：US18935811

申请日：2024-11-04

Applicant: 3D Systems, Inc.

Inventor： Steven Van Cleve Korol

IPC: B29C64/209 ,  B29C64/112 ,  B29C64/232 ,  B29C64/236 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00

Abstract: A 3D printing system includes a build plate supporting a 3D article, a drop on demand piezo (DODP) printhead, a horizontal movement mechanism, a supply of phase change ink, and a controller. The controller is configured to: operate the supply and the DODP printhead to maintain a liquid state of the phase change ink, position an upper surface of the 3D article at a build plane, scan the printhead over the upper surface, and operate the DODP printhead to deliver ink drops to pixel locations upon the upper surface. The operation of the DODP printhead includes, for individual ones of the ink drops: apply a secondary waveform to a piezo actuator followed by a primary waveform to the piezo actuator to generate two drops of liquified phase change ink that merge in flight before reaching and solidifying on the upper surface.

公开(公告)号：US20200331208A1

公开(公告)日：2020-10-22

申请号：US16839117

申请日：2020-04-03

Applicant: 3D Systems, Inc.

Inventor： Steven Van Cleve Korol

IPC: B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/165 ,  B29C64/209

Abstract: A system for fabricating a three-dimensional article includes a fluid supply with binding agent, a printhead, a powder dispenser, and a controller. The fluid supply is for containing a binding agent. The controller is configured to (a) operate the fluid supply and/or the printhead to elevate a temperature of the binding agent to above 25 degrees Celsius, (b) operate the dispenser to dispose a layer of the powder at a build plane, (c) scan and operate the printhead to selectively jet the binding agent onto the layer of powder to bind a layer of the three-dimensional article, and (d) repeat operating the dispenser and scanning and operating the printhead to complete fabrication of the article. Jetting or not jetting the binding agent includes individually operating drop ejectors of the printhead using a voltage waveform. The waveform can include one or more of a non-ejecting pulse and an ejecting pulse.