Patent ID: 6110409
Filing Date: 2000-08-29
Classification: B29C,B33Y

Abstract:
Rapid prototyping process for production of components by transformation of successive volumes of raw material from a first state into a second state by a transformation-inducing device, the process including a repetition of a cycle comprising:a) covering part of a working field with raw material in the first state by moving at least one doctor blade;b) arranging at least one doctor blade, at a given time in the cycle, to prevent the transformation-inducing device from producing transformations in at least one region of the working field by producing a shadow effect in the region;c) transforming the raw material in at least one portion of the working field, which is bounded by the shortest closed and continuous contour containing the region affected by the shadow effect, into the second state;d) moving the at least one doctor blade such that the shadow effect is at least partially removed from the region and the raw material in the second state is covered with raw material in the first state; ande) repeating steps b-d until the cycle is completed.