公开(公告)号：US20180281277A1

公开(公告)日：2018-10-04

申请号：US15926148

申请日：2018-03-20

Applicant: 3D Systems, Inc.

Inventor： Christopher Tanner ,  Andrew ENSLOW ,  Ben WYNNE ,  Robert MUELLER ,  James PINGEL ,  Martin Alan JOHNSON

IPC: B29C64/129 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/35 ,  B29C64/20

Abstract: A three dimensional printing system includes a resin vessel, a light engine, a movement mechanism, a fixture, and a controller. The resin vessel is for containing a photocurable resin and has a lower portion with a transparent sheet. The light engine is configured to selectively project radiation up through the transparent sheet and over a build plane. The fixture is coupled to the movement mechanism and has a lower face that faces the transparent sheet. The controller is configured to operate the light engine to solidify a particle trapping sheet proximate to the build plane thereby trapping particles that extend upwardly from the transparent sheet into the build plane.