FEEDBACK CONTROL SYSTEM FOR PRINTING 3D PARTS
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United States of America Patent
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Dec 14, 2017
app pub date -
Jun 9, 2016
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Jun 9, 2016
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Abstract
An electrophotography-based additive manufacturing system is used to print a three-dimensional part. An electrophotography engine is used to print a part layer of the three-dimensional part is using a part material compositionally including part material particles. The developed part layer is transferred from the electrophotography engine to a transfer medium, and the transferred part layer is transfused together to previously-printed layers using a layer transfusion assembly. A surface height profile of the transfused part layers is measured using a surface profilometer, and a thickness profile of a subsequently-printed part layer is controlled responsive to the measured surface height profile.
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