Patent ID: 8968625
Filing Date: 2015-03-03
Classification: B29C,G03G

Abstract:
1. A process for building three-dimensional objects, comprising the steps of (1) depositing a layer of powdered base material on a substrate; (2) operating an imaging device to generate a electrostatic latent image on an imaging member having a surface capable of supporting and transporting filler material, wherein the electrostatic latent image corresponds to data derived from a selected cross-section of a three-dimensional object to be built; (3) delivering a filler material to the surface of the imaging member to form a layer of filler material adjacent the electrostatic latent image thereon; (4) heating the layer of filler material in a heating zone; (5) transferring the layer of heated filler material from the surface of the imaging member to the layer of powdered base material to cause said layer of powdered base material to become bonded in regions corresponding to the electrostatic latent image; (6) repeating all the above steps for as many times as required to form successive layers that constitute the three-dimensional object, said filler material further causing adjacent layers to be bonded with one another; and (7) removing unbonded material to cause the three-dimensional object to appear.