Patent ID: 11926931
Assignee: RICOH COMPANY, LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC D  B  C  Y | IPC B  C  D

Claim 18:
19. A method of manufacturing a solid freeform fabrication object, comprising:
forming a layer including a resin powder;
irradiating the layer with electromagnetic wave to melt the layer;
cooling down the layer;
curing the layer; and
repeating the forming, the irradiating, the cooling down, and the curing the layer,
wherein the resin powder comprises particles:
wherein the particles have a 50 percent cumulative volume particle diameter of from 5 to 200 μm,
a ratio (Mv/Mn) of a volume average particle diameter (Mv) to a number average particle diameter (Mn) of the particles is 2.00 or less,, the resin powder has an average circularity of 083 to 0.98 in a range in which the resin powder has a particle diameter of from 0.5 to 200 μm, and
said resin powder comprises particles having a pillar-like form having no points at ends.