US 11,938,678 B2
Adhesion blocking element, three-dimensional printing device, and three-dimensional printing method
Guang Zhu, Ningbo (CN); Zhifeng Yao, Beijing (CN); Fang Li, Beijing (CN); Yi-Ho Lin, Beijing (CN); Yanhui Guo, Beijing (CN); and Hu Wang, Beijing (CN)
Assigned to LUXCREO (BEIJING) INC., Beijing (CN)
Appl. No. 16/761,682
Filed by NINGBO SEZEN TECHNOLOGY CO., LTD., Zhejiang (CN); and BEIJING QINGFENG SHIDAI TECHNOLOGY CO., LTD., Beijing (CN)
PCT Filed May 5, 2019, PCT No. PCT/CN2019/085569
§ 371(c)(1), (2) Date May 5, 2020,
PCT Pub. No. WO2019/214552, PCT Pub. Date Nov. 14, 2019.
Claims priority of application No. 201810422439.1 (CN), filed on May 5, 2018; application No. 201810571564.9 (CN), filed on Jun. 6, 2018; application No. 201810984776.X (CN), filed on Aug. 28, 2018; application No. 201810984844.2 (CN), filed on Aug. 28, 2018; and application No. 201810984845.7 (CN), filed on Aug. 28, 2018.
Prior Publication US 2021/0178682 A1, Jun. 17, 2021
Int. Cl. B29C 64/255 (2017.01); B29C 64/124 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01)
CPC B29C 64/255 (2017.08) [B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)] 9 Claims
OG exemplary drawing
 
1. A 3D printer comprising:
a liquid storage tank configured to hold a polymerization liquid; and
an anti-sticking element arranged on a bottom of the liquid storage tank, the anti-sticking element comprising:
a top surface in contact with the polymerization liquid, and
a plurality of microstructure depressions that extend from openings on the top surface away from the polymerization liquid, wherein at least some of the plurality of microstructure depressions contain air and have a first opening arranged on the top surface, but has no second openings arranged on a bottom surface of the anti-sticking element;
wherein the anti-sticking element prevents the three-dimensional part from sticking to the bottom of the liquid storage tank.