Apparatus for solidifying and shaping optically cured fluid by c

Plastic article or earthenware shaping or treating: apparatus – Means applying electrical or wave energy directly to work – Radiated energy

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264401, B29C 3508, B29C 4102

Patent

active

057800707

ABSTRACT:
There is provided an apparatus for solidifying and shaping fluid which can be optically cured, including (a) an optically scanning device for scanning a level of fluid which can be optically cured, with a light beam, (b) a sinking device for sinking a layer having been cured by scanning carried out by the optically scanning device, below a level of the fluid, and (c) a recoat device for covering a cured layer having been sunk in the step (b), with a fluid which is not yet cured. The recoat device is formed with a recoater blade which horizontally moves above a level of the cured layer with a predetermined gap kept therebetween to smooth a level of the not yet cured fluid. The optically scanning device scans a level of not yet cured fluid having been smoothed by the recoater blade, with a light beam, simultaneously with scanning of the optically scanning device. The above mentioned apparatus makes it possible to carry out an optically scanning process simultaneously with a recoat process to thereby significantly shorten a time for optical solidification and shaping. In addition, since the above mentioned apparatus optically scans and simultaneously recoats, it is scarcely necessary to stop an optically scanning process during a recoat process, thereby making it possible to effectively utilize output of an optically scanning apparatus such as a laser beam radiating device.

REFERENCES:
patent: 4801477 (1989-01-01), Fudim
patent: 5174931 (1992-12-01), Almquist et al.
patent: 5238614 (1993-08-01), Uchinono et al.
patent: 5432045 (1995-07-01), Nakamura et al.
patent: 5626919 (1997-05-01), Chapman et al.
patent: 5647931 (1997-07-01), Retallick et al.

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