초록 ▼

An apparatus is described for producing a three-dimensional object from a powder material which includes powder particles and which is solidifiable by exposure to electromagnetic radiation. The apparatus includes a support having a substantially plane support surface for supporting said object, an a

An apparatus is described for producing a three-dimensional object from a powder material which includes powder particles and which is solidifiable by exposure to electromagnetic radiation. The apparatus includes a support having a substantially plane support surface for supporting said object, an applying device for applying a layer of the powder material to the support surface, a radiation device for selectively exposing the powder material to electromagnetic radiation at places corresponding to the object and a discharge electrode for generating an electric field for reducing charge differences on the powder particles.

대표청구항 ▼

[ What is claimed is:] [12.] A method of layerwise producing a three-dimensional object, said method comprising generating a layer of a powder material which comprises powder particles and is solidifiable by exposure to electromagnetic radiation, solidifying said layer by selective exposure to elect

[ What is claimed is:] [12.] A method of layerwise producing a three-dimensional object, said method comprising generating a layer of a powder material which comprises powder particles and is solidifiable by exposure to electromagnetic radiation, solidifying said layer by selective exposure to electromagnetic radiation at places corresponding to said object and generating an electric field for reducing the charge differences between said powder particles, wherein said step of generating a layer of powder material and selectively solidifying said layer are repeated until the three-dimensional object is formed.