Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive...
Patent
1994-04-20
1995-09-05
Chapman, Mark A.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
264401, 4251744, 427487, 427492, B05D 306, G03C 908
Patent
active
054478227
ABSTRACT:
An apparatus and related method for providing a substantially flat working surface of photocurable resin for the formation of a next layer of a stereolithographic part. A substantially flat surface of a rigid member is substantially covered by and spaced from the resin by a substance or film, which is placed in contact with the photocurable resin to form the working surface. Various embodiments are described including where the rigid member is a quartz including a fused silica plate, a bar, a vat wall, the face of a CRT, a fiber-optic bundle, or the bottom of a piston, and also including embodiments where the substance or film is a thin teflon or mylar film, an inert liquid, wax, a thin coating of trichlorosilane or ethoxysilane, or oxygen-saturated resin. Embodiments are also described whereby the next layer is exposed by transmitting solidifying radiation through the member and substance or film.
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Cohen Adam L.
Hull Charles W.
Lewis Charles W.
Spence Stuart L.
3-D Systems, Inc.
Chapman Mark A.
Smalley Dennis R.
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