公开(公告)号：US20190134899A1

公开(公告)日：2019-05-09

申请号：US15804646

申请日：2017-11-06

Applicant: 3D Systems, Inc.

Inventor： Robert Mueller ,  Ben Wynne ,  Jamie Etcheson ,  Christopher Tanner

IPC: B29C64/20 ,  B29C64/129 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A three dimensional (3D) printer generates 3D articles of manufacture through the selective hardening of light curable liquid resins. The 3D printer includes a vessel, a fixture, a movement mechanism, a light engine, a controllable pressure source, and a controller. The vessel contains light curable resin with a bottom portion including a transparent sheet. The light engine selectively illuminates a lower face of a 3D article of manufacture being formed through the transparent sheet. The fixture and movement mechanism selectively translate the lower face up and down which generates a varying pressure of the resin against a top surface of the transparent sheet. The controllable pressure source applies a gas pressure to a bottom surface of the transparent sheet to offset the varying pressure of the resin.