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Skillful three-dimensional printing

  • US 10,286,603 B2
  • Filed: 12/09/2016
  • Issued: 05/14/2019
  • Est. Priority Date: 12/10/2015
  • Status: Active Grant
First Claim
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1. A method for printing a three-dimensional object, comprising:

  • (a) providing a material bed comprising a pre-transformed material;

    (b) irradiating an exposed surface of the material bed at a first position using an energy beam during a first time period of at least one millisecond, to transform the pre-transformed material at the first position to a transformed material to form a first tile as part of the three-dimensional object, which first position is along a path-of-tiles, wherein during the first time period, the energy beam is stationary or substantially stationary such that it at most undergoes back and forth movement with respect to the first position on the exposed surface;

    (c) translating the energy beam to a second position of the exposed surface along the path-of-tiles, which second position is different from the first position, wherein the energy beam is translated during an intermission without transforming the pre-transformed material along the path-of-tiles, wherein during the intermission, the energy beam irradiates a portion of the material bed that is not along the path-of-tiles; and

    (d) irradiating the exposed surface of the material bed at the second position with the energy beam at the second position during a second time period of at least one millisecond, to transform the pre-transformed material at the second position to a transformed material to form a second tile as part of the three-dimensional object, wherein during the second time period, the energy beam is stationary or substantially stationary such that it at most undergoes back and forth movement with respect to the second position on the exposed surface.

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