Solid imaging apparatus and method with coating station
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United States of America Patent
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Jan 16, 2001
Grant Date -
N/A
app pub date -
Feb 21, 1997
filing date -
Mar 1, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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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