Recoating of stereolithographic layers

Details Recoating of stereolithographic layers Recoating of stereolithographic layers

B - Operations, Transporting

29

C

18/1101, 117/99

B29C 39/42 (2006.01) B29C 35/08 (2006.01) B29C 41/12 (2006.01) B29C 67/00 (2006.01) G01F 23/292 (2006.01) G01F 23/36 (2006.01) G05D 9/12 (2006.01)

Patent

CA 1337955

A stereolithography method and system for producing three-dimensional plastic objects by forming a plurality of thin layers of partially cured plastic material which are thin cross sections of the desired object. A layer of polymerizable resin is applied to a support surface and the excess is struck off, such as with a doctor blade, to form a smoothed layer. The smoothed layer is subjected to radiation in a predetermined pattern to form the cross-sectional layer into the desired shape. A plurality of layers are subsequently applied, leveled, then cured in the same manner to produce the desired three-dimensional object. Apparatus for measuring the level of the surface of a fluid is also provided. Variations in the level of fluid will be detected and may be used to drive a pump, diaphragm, or plunger in order to maintain the level of the fluid.

612990

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