Patent ID: 11861271
Assignee: STRATASYS, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 13:
14. The method of claim 1:
wherein selecting the first interior model volume comprises, based on the first upward-facing surface characterized by an effective tangent inclined from a horizontal plane, parallel to the first model layer, by greater than a threshold angle:
selecting the first interior model volume proximal the first superficial model volume and fully contained within the first model layer of the part model; and

further comprising:
segmenting a second model layer, in the set of model layers, into a second set of model volumes;
segmenting a third model layer, in the set of model layers, into a third set of model volumes, the third layer adjacent and above the second model layer in the part model;
detecting a second superficial model volume, in the third set of model volumes of the third layer intersecting a second upward-facing surface of the part model, the second upward-facing surface defining a concave contour characterized by a second effective tangent inclined from the horizontal plane by less than the threshold angle;
selecting a second interior model volume, in the second set of model volumes:
defined below the second superficial model volume of the third model layer; and
fully contained within the second model layer of the part model;

selecting a third interior model volume, in the second set of model volumes:
adjacent the second interior model volume; and
fully contained within the second model layer of the part model;

based on the material profile, calculating a second exposure energy predicted to yield a second three-dimensional polymerization geometry intersecting the concave contour of the second upward-facing surface when projected onto the material during the build;
based on the material profile, calculating a third exposure energy predicted to yield a third three-dimensional polymerization geometry intersecting the concave contour of the second upward-facing surface when projected onto the material during the build, the second three-dimensional polymerization geometry and the third three-dimensional polymerization geometry cooperating to approximate the concave contour of the second upward-facing surface contained within the second superficial model volume;
populating a second print image with:
the second exposure energy in a second image area corresponding to the second interior model volume in the second model layer; and
the third exposure energy in a third image area corresponding to the third interior model volume in the second model layer; and

storing the second print image in the print file.