US 12,269,214 B2
Method and system for three-dimensional printing
Barak Glassman, Nes Ziona (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Appl. No. 17/419,817
Filed by Stratasys Ltd., Rehovot (IL)
PCT Filed Dec. 30, 2019, PCT No. PCT/IL2019/051438
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2020/141518, PCT Pub. Date Jul. 9, 2020.
Claims priority of provisional application 62/786,577, filed on Dec. 31, 2018.
Prior Publication US 2022/0080665 A1, Mar. 17, 2022
Int. Cl. B29C 64/35 (2017.01); B29C 64/112 (2017.01); B29C 64/209 (2017.01); B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01); B33Y 50/02 (2015.01); B33Y 70/00 (2020.01)
CPC B29C 64/35 (2017.08) [B29C 64/112 (2017.08); B29C 64/209 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/00 (2014.12); B29K 2995/0046 (2013.01); B29K 2995/0092 (2013.01); B29K 2995/0093 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of three-dimensional printing, comprising:
operating a printing head having a nozzle array to dispense a building material formulation, wherein the printing head is directly connected to a cartridge containing the building material formulation, and wherein the printing head comprises a channel conveying a building material formulation received from said cartridge to said nozzle array;
discarding said building material formulation from said channel; and
connecting a cartridge containing a building material formulation that is different from said discarded building material formulation to said channel.