US 11,890,816 B2
System and method of mitigating color offset discrepancies in 3D printing systems
Lior Elgali, Tel-Aviv (IL); Dror Kasimov, Tel-Aviv (IL); Yoav Bressler, Tel-Aviv (IL); and Shai Lipowitch, Petach Tikva (IL)
Assigned to STRATASYS LTD., Rehovot (IL)
Appl. No. 17/264,043
Filed by STRATASYS LTD., Rehovot (IL)
PCT Filed Jul. 30, 2019, PCT No. PCT/IL2019/050860
§ 371(c)(1), (2) Date Jan. 28, 2021,
PCT Pub. No. WO2020/026240, PCT Pub. Date Feb. 6, 2020.
Claims priority of provisional application 62/860,564, filed on Jun. 12, 2019.
Claims priority of provisional application 62/760,949, filed on Nov. 14, 2018.
Claims priority of provisional application 62/711,889, filed on Jul. 30, 2018.
Prior Publication US 2021/0370610 A1, Dec. 2, 2021
Int. Cl. B29C 64/393 (2017.01); B29C 64/336 (2017.01); H04N 1/60 (2006.01); B33Y 10/00 (2015.01); B33Y 50/02 (2015.01); B33Y 70/00 (2020.01)
CPC B29C 64/393 (2017.08) [B29C 64/336 (2017.08); H04N 1/60 (2013.01); B33Y 10/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/00 (2014.12)] 20 Claims
OG exemplary drawing
 
1. A method of mitigating, by at least one processor, color discrepancies in a three-dimensional (3D) printing system comprising a plurality of printing heads, the method comprising:
obtaining a color offset vector from one or more samples;
receiving a model representing a 3D object, the model comprising a plurality of model printing points associated with respective color;
analyzing the model in view of the obtained color offset vector;
producing a calibrated data structure, adapted to mitigate color discrepancies, wherein producing the calibrated data structure comprises modifying the plurality of model printing points to comprise one or more of a transparent envelope region, a clarity enhancement region, a color compensation region and a white region; and
printing the 3D object according to the calibrated data structure.