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SYSTEM AND METHOD FOR ON-DEMAND COLORIZATION FOR EXTRUSION-BASED ADDITIVE CONSTRUCTION

  • US 20170136761A1
  • Filed: 11/11/2016
  • Published: 05/18/2017
  • Est. Priority Date: 11/13/2015
  • Status: Active Grant
First Claim
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1. An extrusion-based 3D printer, for constructing objects out of a completely colored filament, the 3D printer comprising:

  • a tank system having a plurality of puncture mechanisms, a corresponding number of subchambers and a corresponding number of pumps, each pump being in fluid communication with one subchamber,wherein each subchamber has an interior chamber equipped with a single opening, the opening being sealed by a penetrable membrane;

    a mixing chamber having an interior volume, a filament input, a filament output, and a waste outlet,wherein the mixing chamber is in fluid communication with the plurality of pumps,wherein the plurality of pumps are configured to independently pump fluid from the corresponding subchamber;

    a material dispenser configured to dispense uncolored filament to the filament input;

    a waste management system in fluid communication with the waste outlet; and

    a print head having an extruder configured to receive filament through the filament output.

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