Patent ID: 7090484
Filing Date: 2006-08-15
Classification: B29C,B33Y

Abstract:
1. A stereolithographic comprising: supply means of successively supplying a layer of photohardenable resin composition onto a mount table or a photohardened layer formed by hardening photohardenable resin composition; stereolithography means having a light irradiation device for repeating formation/lamination of photohardened layers each having predetermined pattern and thickness under control until a desired three dimensional object is formed; temperature adjusting means for setting the temperature of the photohardenable resin composition to a temperature less than the melting temperature thereof; wherein said temperature adjusting means is cooling means having control means for keeping, at a temperature less than the melting temperature of the photohardenable resin composition, a photohardenable resin composition layer forming the same surface as a photohardened layer which has been already formed, in the overall or a part of the stereolithographic process; and heating means for heating unhardened photohardenable resin composition existing in an optical stereolilthographic system up to a temperature above the melting temperature thereof at some midpoint of or after the end of the stereolithographic process.