Patent ID: 11872828
Assignee: STRATASYS, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 16:
17. A three-dimensional (3D) color printer for printing 3D color objects layer-by-layer, comprising:
a table constructor, configured to construct a lookup table (LUT) of color values against actual printed color composition under different printing conditions by:
printing color calibration targets using actual printed color compositions while

exposing to different printing conditions;
measuring the resulting color value for each of said targets using a colorimetry device; and
tabulating the measured color values against the actual printed color composition and the respective printing conditions;

a specification input for obtaining a 3D CAD file defining a 3D geometry and a color texture for said color object;
a region definer configured to divide said 3D geometry into a core and a color shell, and to divide said color shell into volumetric regions; and
a color correction unit configured to calculate expected printing conditions for each of the volumetric regions, and to populate each of the volumetric regions with color voxels to provide an intended color according to said LUT of color values against actual printed color composition under different printing conditions; and wherein said 3D colored printer is configured to print using said color voxels.