US 11,884,022 B2
Method and system for enhancing the lifetime of printing heads used in additive manufacturing
Shai Sultan, Moshav Ganei Tal (IL); and Shmuel Rubin, Moshav Tkuma (IL)
Assigned to STRATASYS LTD., Rehovot (IL)
Appl. No. 17/416,528
Filed by STRATASYS LTD., Rehovot (IL)
PCT Filed Dec. 25, 2019, PCT No. PCT/IL2019/051411
§ 371(c)(1), (2) Date Jun. 21, 2021,
PCT Pub. No. WO2020/136651, PCT Pub. Date Jul. 2, 2020.
Claims priority of provisional application 62/784,852, filed on Dec. 26, 2018.
Prior Publication US 2022/0072799 A1, Mar. 10, 2022
Int. Cl. B29C 64/393 (2017.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01); B33Y 50/02 (2015.01); B29C 64/35 (2017.01)
CPC B29C 64/393 (2017.08) [B29C 64/35 (2017.08); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B33Y 50/02 (2014.12)] 19 Claims
OG exemplary drawing
 
1. A three-dimensional (3D) printing system comprising:
a controller, and
printing heads comprising one or more nozzle arrays,
wherein said printing system being configured to form a 3D object by depositing a building material, layer by layer, wherein said controller is configured to activate each of said printing heads to dispense the building material at least once within a specified period of time during said printing,
wherein said 3D object comprises a bulk region and a surface region, wherein said controller is configured to activate said printing heads to deposit the building material to form a portion of said bulk region according to data provided by a CAD file, and wherein said controller is configured to activate said printing heads to deposit the building material to form another portion of the bulk region without relating to said data.