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Temperature determination in additive manufacturing systems

  • US 10,639,848 B2
  • Filed: 09/28/2015
  • Issued: 05/05/2020
  • Est. Priority Date: 09/28/2015
  • Status: Active Grant
First Claim
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1. An additive manufacturing system, the system comprising a controller configured to:

  • operate a fluid dispenser to selectively dispense at least one of a plurality of print agents to a print-bed area containing a layer of a part being printed in a given three-dimensional printing process;

    obtain temperature information from one or more temperature sensors, wherein each of the one or more temperature sensors is configured to measure a temperature of a respective pixel area in a plurality of pixel areas in the print-bed area for at least one layer of the part being printed;

    obtain agent concentration information, the received agent concentration information comprising, for each pixel area in the plurality of pixel areas, a concentration of each of the plurality of printing agents present in the respective pixel area;

    on the basis of the obtained temperature information and agent concentration information, for each pixel area in the plurality of pixel areas, determine the temperature for each printing agent in the plurality of printing agents which is present in the respective pixel area, the different printing agents having different respective temperatures within that pixel area; and

    on the basis of the determined temperatures for each pixel area and printing agent, determine a power to be applied to a heating subsystem employed in the given three-dimensional printing process.

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