	US 12,076,917 B2
	Energy dosing for additive manufacturing
Cary G. Addington, Corvallis, OR (US); David A. Champion, Corvallis, OR (US); Mohammed S. Shaarawi, Corvallis, OR (US); James McKinnell, Corvallis, OR (US); and Diane R. Hammerstad, Corvallis, OR (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
Filed on Nov. 24, 2021, as Appl. No. 17/535,223.
Application 17/535,223 is a continuation of application No. 16/074,805, granted, now 11,207,827, previously published as PCT/US2017/024788, filed on Mar. 29, 2017.
Prior Publication US 2022/0080652 A1, Mar. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 64/153 (2017.01); B29C 64/268 (2017.01); B29C 64/282 (2017.01); B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01)

CPC B29C 64/153 (2017.08) [B29C 64/268 (2017.08); B29C 64/282 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)]

14 Claims

1. A processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to:

irradiate fusible build material in a layer of fusible build material with a heating laser beam and a fusing laser beam overlapping the heating laser beam with the heating laser beam leading the fusing laser beam across the build material in two directions, the heating laser beam having a larger spot size and a lower intensity than the fusing laser beam; and

vary an overlap of the heating laser beam and the fusing laser beam at multiple different voxel locations in the layer of build material according to an energy dosage to be applied at each voxel location in an object slice, wherein each energy dosage is represented by an energy value associated with each voxel of the object slice.