US 11,673,328 B2
Methods for preventing oxygen inhibition of a light-initiated polymerization reaction in a 3D printing system using inert gas
Michael Zenou, Hashmonaim (IL); Ziv Gilan, Kfar-harif (IL); Daniel Liptz, Jerusalem (IL); and Yuval Shai, Hashmonaim (IL)
Assigned to IO TECH GROUP LTD., Modiin (IL)
Filed by IO Tech Group Ltd., London (GB)
Filed on Nov. 2, 2021, as Appl. No. 17/453,292.
Application 17/453,292 is a continuation of application No. 16/703,417, filed on Dec. 4, 2019, granted, now 11,203,154.
Claims priority of provisional application 62/777,902, filed on Dec. 11, 2018.
Prior Publication US 2022/0055302 A1, Feb. 24, 2022
Int. Cl. B29C 64/264 (2017.01); B29C 64/245 (2017.01); B29C 64/106 (2017.01); B29C 64/371 (2017.01); B29C 35/02 (2006.01); B29C 35/08 (2006.01); B29C 59/04 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B29C 64/264 (2017.08) [B29C 35/0288 (2013.01); B29C 35/0805 (2013.01); B29C 59/04 (2013.01); B29C 64/106 (2017.08); B29C 64/245 (2017.08); B29C 64/371 (2017.08); B29C 2035/0827 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 8 Claims
OG exemplary drawing
 
1. A method, comprising:
depositing a layer of curable material on a print surface of an object under fabrication;
while depositing the layer of curable material on the print surface, initiating a purging of oxygen from a region adjacent to a diffuser;
upon finishing the deposition of the layer of curable material on the print surface, transporting the layer of curable material into the oxygen free region adjacent to the diffuser while continuing to purge oxygen from the region adjacent to the diffuser; and
curing the curable material while continuing to purge oxygen from the region adjacent to the diffuser.