Coating processes – Direct application of electrical – magnetic – wave – or... – Polymerization of coating utilizing direct application of...
Patent
1992-05-18
1997-05-06
Padgett, Marianne
Coating processes
Direct application of electrical, magnetic, wave, or...
Polymerization of coating utilizing direct application of...
427512, 264401, 4251744, 118620, 118413, 118423, 118429, C08J 704, B05C 302, B29B 1700, B29C 3502
Patent
active
056269196
ABSTRACT:
A solid imaging apparatus and method produces an integral three-dimensional object from a multiplicity of cross sectional portions of the object by selectively exposing successive layers of a liquid photoformable composition to actinic radiation. The apparatus includes a vessel for containing the composition so as to present a free surface, and a movable platform disposed within the vessel below the free surface. Part of the composition is transferred above the free surface by lowering and raising a dispenser at predetermined positions located away from the platform. A doctor blade contacts the composition transferred above the free surface, and then moves over the platform to form a substantially uniform layer of the composition.
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Chapman Brian G.
Clausen Christian H.
Mickish Daniel J.
Vassiliou Eustathios
E. I. Du Pont de Nemours and Company
Magee Thomas H.
Padgett Marianne
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