Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive...
Patent
1996-05-06
1997-10-14
Chapman, Mark
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
430138, 4302701, 4302811, 430292, 264 22, G03C 500
Patent
active
056771070
ABSTRACT:
A method for producing a three-dimensional object having selected elements which are colored differently than other elements of the object comprising the steps of: (a) providing a film of a photohardenable composition containing a photoresponsive agent; (b) irradiating the film in a cross-sectional pattern of the object to be formed; (c) selectively irradiating one or more portions of the cross-sectional pattern corresponding to the selected elements which are desired to be colored differently with radiation which activates the photoresponsive agent, the photoresponsive agent thereby producing color in or removing color from the selected irradiated portions of the cross-sectional pattern; (d) repeating the steps a, b and c to form successive adjacent cross-sectional patterns of the object; and (e) integrating the cross-sectional patterns together to provide the object.
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patent: 5055372 (1991-10-01), Shanklin et al.
patent: 5076974 (1991-12-01), Modrek et al.
patent: 5088047 (1992-02-01), Bynum
patent: 5096530 (1992-03-01), Cohen
patent: 5121329 (1992-06-01), Crump
patent: 5230986 (1993-07-01), Neckers
Hansen Shou and D.C. Neckers, Formation of Multicolor Polymeric Objects by Laser-Initiated Photopolymerization, Jan. 1995.
Chapman Mark
Spectra Group Limited, Inc.
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