公开(公告)号：JP2002067175A

公开(公告)日：2002-03-05

申请号：JP2001208262

申请日：2001-07-09

Applicant: 3 D SYSTEMS INC

Inventor： MANNERS CHRIS R ,  KULKARNI RAJEEV B

IPC: B29C67/00 ,  G06F17/50

Abstract: PROBLEM TO BE SOLVED: To form a smooth contour from parts obtained by using a conventional slice forming method, and manufacture a final laminated object having a high precision and an improved surface appearance. SOLUTION: Statement data for the object to be formed is received. By processing the received data, the data is optimized in order to use the data for a selective energy application to stimulate a state variation of a liquid medium to form the object. The processing of the received data identifies all the vertexes in calculated slice layers of the statement data of the object. The object is sliced in such a manner that slice boundary layers may pass respective vertexes. Boolean function is applied to the sliced layers in order to form the expression of the laminated object having a smooth contour.

公开(公告)号：JP2001232690A

公开(公告)日：2001-08-28

申请号：JP2001019911

申请日：2001-01-29

Applicant: 3 D SYSTEMS INC

Inventor： KULKARNI RAJEEV B ,  MANNERS CHRIS R

IPC: B29C67/00

Abstract: PROBLEM TO BE SOLVED: To provide an improved stereolithography process for formation of a three-dimensional object using an improved support part. SOLUTION: The support part with a weakly cured part at a selected position is formed by distinguishably curing a liquid material during the formation of the support part. Consequently, removal of the support part from the shaped three-dimensional object is easy and at the same time, a required after-treatment is limited.