Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Forming articles by uniting randomly associated particles
Reexamination Certificate
2005-05-24
2005-05-24
Theisen, Mary Lynn (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Forming articles by uniting randomly associated particles
C264S109000, C264S128000, C264S308000, C425S174000, C425S174400
Reexamination Certificate
active
06896839
ABSTRACT:
To provide a three-dimensional molding technique capable of generating a three-dimensional molded article in short time.In a three-dimensional molding apparatus, a powder material is allowed to drop via an opening while moving a thin layer formation section in the +X direction, thereby forming a powder layer on a molding stage. With respect to a selected region in the powder layer, a binder of ultraviolet-ray hardening resin is discharged from a head section. Then, the powder layer is irradiated with ultraviolet rays from an ultraviolet irradiation section, making the ultraviolet-ray hardening resin applied on the powder layer harden to thereby bind the powder material. By repeating this operation with respect to the powder layer which is sequentially formed, a three-dimensional molded article is formed. In this way, since an ultraviolet-ray hardening resin is used as a binder and a powder material can be bound rapidly by ultraviolet irradiation, it is possible to generate a three-dimensional molded article in short time.
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US 4,937,420, 6/1990, Deckard (withdrawn)
Kubo Naoki
Miyazaki Makoto
Norita Toshio
Wada Akira
McDermott Will & Emery LLP
Minolta Co. , Ltd.
Theisen Mary Lynn
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