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ELECTROPHOTOGRAPHY-BASED ADDITIVE MANUFACTURING WITH OVERLAY CONTROL

  • US 20150273767A1
  • Filed: 04/01/2014
  • Published: 10/01/2015
  • Est. Priority Date: 04/01/2014
  • Status: Active Grant
First Claim
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1. An additive manufacturing system for printing a three-dimensional part, the additive manufacturing system comprising:

  • one or more imaging engines configured to develop layers of the three-dimensional part;

    a build platform;

    one or more gantry mechanisms configured to move the build platform;

    a rotatable transfer medium configured to receive the developed layers from the one or more imaging engines, and to transfer the developed layers onto intermediate build surfaces of the three-dimensional part on the build platform in a layer-by-layer manner;

    one or more imaging sensors configured to scan the developed layers on the rotatable transfer medium and on the three-dimensional part, and to transmit data relating to the scans; and

    a controller assembly configured to receive the transmitted data from the one or more imaging sensors, to detect overlay errors from the scans, and to adjust the one or more gantry mechanisms to reduce the overlay errors.

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