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He looked for a patent for his rapid prototyping system in Japan, in Might 1980. He described his system as follow: a barrel of photopolymer product is exposed to a UV light that hardens the part and develops the model in layers. Unfortunately, since of  You Can Try This Source  financing issue, the complete patent spec was not filled within the 1 year due date after application.

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Automatic Method for Producing a Three-Dimensional Plastic Model with Photo, Hardening Polymer, in Evaluation of Scientific Instruments. In this paper, he explains three standard '3D printing' techniques to develop plastic parts layer by layer, utilizing photopolymerization. He also offers crucial details for the production of stereolithography procedure. A French Group creates Stereolithography A concept born in the canteen (1984-86) Jean-Claude Andr (from the really popular French National Center for Scientific Research Study CNRS), Alain le Mhaut (from CGE, previous Alcatel) and Olivier de Wiite (from Cilas) came next.

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His colleagues disagreed with his formulas. The concept was clear for him:. He had to develop a 'fractal object' which he explains to be 'a things with regional homes that are equivalent to its global homes.' Because of the complex shape of such an object, no device allowed such production.

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Olivier de Witt was at the time dealing with lasers for Cilas, subsidiary of Alcatel. And think what? Olivier informed him: when two lasers cross each other, a liquid (monomer) can become a strong (polymer). They had simply thought of building a '3D printer'! They would utilize a laser to attempt and build Alain's 'fractal things'.

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They provided their idea to Jean-Claude Andr who was a scientist at the CNRS. Always really light-hearted, he qualified the idea to be 'an excellent great bad concept'. He featured the idea to construct the things layer by layer, and not from the block. From this moment, the 3 males started collaborating to develop a '3D printer' The very first object they produced was a spiral staircase!! They submitted a patent for stereolithography process, three weeks before the American Chuck Hull who produced 3D Systems (see below)! The French Patent was given in January 1986.