Methods and apparatus for production of three-dimensional object

Details Methods and apparatus for production of three-dimensional object Methods and apparatus for production of three-dimensional object

1988-04-18

1991-02-26

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

1562733, 1562735, 264308, 4251744, 427 431, 427 541, B29C 3508

Patent

active

049960105

ABSTRACT:
An improved sterolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bonbardment or chemical reaction, information defining the object being specially processed to reduce curl and distortion, and increase resolution, strength, accuracy, speed and economy of reproduction even for rather difficult object shapes, the successive adjacent laminae, representing corresponding successive adjacent cross-sections of the object, being automatically formed and integrated together to provide a step-wise laminar buildup of the desired object, whereby a three-dimensional object is formed and drawn from a substantially planar surface of the fluid medium during the forming process, and further including post processing wheren the object is subjected to additional UV curing while the object is under water.

REFERENCES:
patent: 3723120 (1973-03-01), Hummel
patent: 4575330 (1986-03-01), Hull
Herbert, "Solid Object Generation" J. Appl. Photo Eng., vol. 8, No. 4, Aug. 1982, pp. 185-188.

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