THREE DIMENSIONAL (3D) PRINTING BY VOLUMETRIC ADDITION THROUGH SELECTIVE CURING OF A FLUID MATRIX
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United States of America Patent
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Mar 10, 2016
app pub date -
Sep 9, 2014
filing date -
Sep 9, 2014
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Abstract
An apparatus for building a three dimensional (3D) object using volumetric addition. The apparatus includes a print chamber containing a volume of a curable resin. The apparatus includes a first and second curing energy sources outputting first and second beams of energy. The apparatus includes a controller operating targeting mechanisms to align the beams of energy to sequentially intersect at a plurality of curing positions associated with build volumes of a digital model of the 3D object. The energy sources may be lasers generating a desired amount of heat when their beams are crossed. The curable resin may be a heat-curable fluid curing when heated into a curing temperature range, and the amount of heat provided by intersected pairs of the first and second beams heats volumes of the heat-curable fluid, proximate to each of the curing positions only, to a temperature in the curing temperature range.
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