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SELECTIVE DEPOSITING OF POWDER IN ADDITIVE MANUFACTURING

  • US 20160368055A1
  • Filed: 06/17/2016
  • Published: 12/22/2016
  • Est. Priority Date: 06/19/2015
  • Status: Active Grant
First Claim
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1. An additive manufacturing system, comprising:

  • a dispenser to deliver a plurality of successive layers of powder over a support, the plurality of successive layers including a bottom layer deposited on the support and remaining layers each deposited on an underlying layer of fused powder;

    an electron source to impart a spatially controllable electrostatic charge to a surface;

    an actuator configured to move the surface relative to the support such that the spatially controllable electrostatic charge on the surface causes removal of a corresponding portion of an outermost layer of powder on the support; and

    an energy source to fuse at least some of the outermost layer of powder.

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