US 12,465,978 B2
Increasing energy absorption during additive manufacturing
Vladek P. Kasperchik, Corvallis, OR (US); Emre Hiro Discekici, San Diego, CA (US); and Krzysztof Nauka, Palo Alto, CA (US)
Assigned to PERIDOT PRINT LLC, Palo Alto, CA (US)
Appl. No. 18/020,006
Filed by Peridot Print LLC, Palo Alto, CA (US)
PCT Filed Aug. 6, 2020, PCT No. PCT/US2020/045104
§ 371(c)(1), (2) Date Feb. 6, 2023,
PCT Pub. No. WO2022/031285, PCT Pub. Date Feb. 10, 2022.
Prior Publication US 2023/0286054 A1, Sep. 14, 2023
Int. Cl. B22F 10/85 (2021.01); B22F 10/16 (2021.01); B22F 10/31 (2021.01); B22F 12/41 (2021.01); B33Y 10/00 (2015.01); B29C 64/165 (2017.01); B29C 64/393 (2017.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01)
CPC B22F 10/85 (2021.01) [B22F 10/16 (2021.01); B22F 10/31 (2021.01); B22F 12/41 (2021.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] 15 Claims
OG exemplary drawing
 
1. An additive manufacturing system, comprising:
a build material distributor to deposit powder build material on a surface;
an agent distribution system to selectively deposit various colored fusing agents and an ultraviolet (UV) absorbing agent on the powder build material in a pattern of a layer of a three-dimensional (3D) object to be printed;
an irradiation source to selectively fuse powder build material with colored fusing agent disposed thereon; and
a controller to, per location of the layer of the 3D object to be printed:
determine an energy absorption at the location based on an absorptivity of colored fusing agents deposited at that location;
determine an additive manufacturing adjustment to be made to bring the energy absorption at the location to a target level, wherein the additive manufacturing adjustment to be made to bring the energy absorption at the location to the target level includes adjusting an amount of UV absorbing agent deposited at the location based on the determined energy absorption corresponding to the absorptivity of the colored fusing agent deposited at the location; and
form the 3D object to be printed by:
depositing, using the agent distribution system, the colored fusing agents and the UV absorbing agent on the powder build material based on the determined additive manufacturing adjustment; and
activating the irradiation source to selectively fuse the powder build material with the colored fusing agent and the UV absorbing agent disposed thereon.