Patent ID: 11931967
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  G  Y | IPC B  G

Claim 10:
11. A three-dimensional (3D) printing device, comprising:
a print head;
a thermal projector;
a thermal sensor to capture a thermal image;
a controller, wherein the controller is to:
produce a kernel for a voxel based on a portion of the thermal image and a trained machine learning model of thermal diffusivity that is constrained with a physical model, wherein the kernel comprises a plurality of kernel parameters indicating thermal diffusion values for a plurality of neighboring voxels that are adjacent to the voxel;
determine a phase condition score by detecting a material phase for the voxel based on the kernel predicted for the voxel; and
causing a modification to an amount of agent deposition for a build layer or an amount of thermal projection for the build layer based on the phase condition score determined.