US 11,981,087 B2
Three-dimensional (3D) printed objects with fracture channels
Wei Huang, Palo Alto, CA (US); and Gary J Dispoto, Palo Alto, CA (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 17/774,803
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Dec. 10, 2019, PCT No. PCT/US2019/065409
§ 371(c)(1), (2) Date May 5, 2022,
PCT Pub. No. WO2021/118535, PCT Pub. Date Jun. 17, 2021.
Prior Publication US 2022/0388248 A1, Dec. 8, 2022
Int. Cl. B29C 64/393 (2017.01); B22F 5/00 (2006.01); B22F 10/20 (2021.01); B22F 10/85 (2021.01); B29C 64/141 (2017.01); B33Y 10/00 (2015.01); B33Y 50/02 (2015.01)
CPC B29C 64/393 (2017.08) [B22F 5/003 (2013.01); B22F 10/20 (2021.01); B22F 10/85 (2021.01); B29C 64/141 (2017.08); B33Y 10/00 (2014.12); B33Y 50/02 (2014.12)] 20 Claims
OG exemplary drawing
 
1. An additive manufacturing device, comprising:
a fracture channel controller to determine fracture channels for a three-dimensional (3D) printed object, wherein portions of the 3D printed object along the fracture channels are to be solidified to a lesser degree as compared to non-channel portions of the 3D printed object; and
an additive manufacturing controller to control an additive manufacturing device to:
solidify portions of a layer of a powdered build material to form a slice of the 3D printed object; and
selectively solidify the fracture channels in the slice, wherein the fracture channels are solidified to the lesser degree as compared to the non-channel portions.