05677107 is referenced by 135 patents and cites 8 patents.

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.

Title
Production of three-dimensional objects
Application Number
770123
Publication Number
5677107
Application Date
May 6, 1996
Publication Date
October 14, 1997
Inventor
Douglas C Neckers
Perrysburg
OH, US
Agent
Thompson Hine & Flory
Assignee
Spectra Group
OH, US
IPC
G03C 5/00
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