Claims
- 1. A method of producing a three-dimensional object having selected elements which are colored differently than other elements of said object comprising the steps of:
- a. providing a film of a photohardenable composition containing a photoresponsive agent,
- b. irradiating said film in a cross-sectional pattern of the object to be formed,
- c. selectively irradiating one or more portions of said cross-sectional pattern corresponding to said selected elements which are desired to be colored differently with radiation which activates said photoresponsive agent, said photoresponsive agent thereby producing color in or removing color from said selected irradiated portions of said cross-sectional pattern,
- d. repeating said steps a, b and c to form successive adjacent cross-sectional patterns of said object, and
- e. integrating said cross-sectional patterns together to provide said object, wherein the curing and coloring steps are conducted using actinic radiation.
- 2. A method according to claim 1 wherein the curing and coloring steps are conducted using laser actinic radiation.
- 3. A method according to claim 1 wherein the curing and coloring steps are conducted using ultraviolet radiation.
- 4. A method for producing a three-dimensional object having selected elements which are colored differently than other elements of said object comprising the steps of:
- a. providing a film of a photohardenable composition containing a photoresponsive agent,
- b. irradiating said film in a cross-sectional pattern of the object to be formed,
- c. selectively irradiating one or more portions of said cross-sectional pattern corresponding to said selected elements which are desired to be colored differently with radiation which activates said photoresponsive agent, said photoresponsive agent thereby producing color in or removing color from said selected irradiated portions of said cross-sectional pattern,
- d. repeating said steps a, b and c to form successive adjacent cross-sectional patterns of said object, and
- e. integrating said cross-sectional patterns together to provide said object, wherein the curing and coloring steps are conducted using different levels of light energy.
- 5. A method according to claim 4 wherein the curing and coloring steps are conducted using laser actinic radiation.
- 6. A method according to claim 4 wherein the curing and coloring steps are conducted using ultraviolet radiation.
Parent Case Info
This is a continuation of U.S. application Ser. No. 08/643,790, filed May 6, 1996, now U.S. Pat. No. 5,677,107, which, in turn, is a continuation-in-part of U.S. application Ser. No. 08/224,503, filed Apr. 7, 1994, now U.S. Pat. No 5,514,519, which, in turn, is a continuation-in-part of U.S. application Ser. No. 07/770,123, filed Oct. 2, 1991, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (2)
Number |
Date |
Country |
17733 |
Aug 1969 |
JPX |
WO9501257 |
Jan 1995 |
WOX |
Non-Patent Literature Citations (1)
Entry |
Hansen Shou and D.C. Neckers, Formation of Multicolor Polymeric Objects by Laser-Initiated Photopolymerization, Jan. 1995. |
Continuations (1)
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Number |
Date |
Country |
Parent |
643790 |
May 1996 |
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Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
224503 |
Apr 1994 |
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Parent |
770123 |
Oct 1991 |
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