Solid imaging system using photohardening inhibition
First Claim
1. A method for fabricating a film of photohardened composition by positioning a surface of a barrier transparent to actinic radiation in contact with a photohardenable composition to form an interface therewith and exposing a layer of the photohardenable composition to the radiation through the surface of the barrier, the improvement in the method comprising forming within the photohardenable composition an inhibition layer in contact with the interface that inhibits photohardening of the composition within the inhibition layer during the exposing step, thereby precluding adhesion of any photohardened composition to the barrier.
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Accused Products
Abstract
An imaging method and apparatus produces a film of photohardened composition by exposing a layer of photohardenable composition to actinic radiation through a surface of a barrier transparent to the radiation and in contact with the composition at an interface therewith. An inhibition layer is created within the photohardenable composition in contact with the interface that inhibits photohardening of the composition within the inhibition layer during exposure, thereby precluding adhesion of any photohardened composition to the barrier.
47 Citations
13 Claims
- 1. A method for fabricating a film of photohardened composition by positioning a surface of a barrier transparent to actinic radiation in contact with a photohardenable composition to form an interface therewith and exposing a layer of the photohardenable composition to the radiation through the surface of the barrier, the improvement in the method comprising forming within the photohardenable composition an inhibition layer in contact with the interface that inhibits photohardening of the composition within the inhibition layer during the exposing step, thereby precluding adhesion of any photohardened composition to the barrier.
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2. A method for fabricating a film from a photohardenable composition comprising the steps of:
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(a) placing the photohardenable composition in contact with one of two opposite surfaces belonging to a transparent barrier, in a way to form an interface therewith, with the requirement that the other surface of the barrier remains unwetted by the composition; (b) exposing a layer of the photohardenable composition to actinic radiation through the transparent barrier to form the film; and (c) forming within the photohardenable composition an inhibition layer in contact with the interface that inhibits photohardening of the composition within the inhibition layer during the exposing step, thereby precluding adhesion of the film to the barrier.
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Specification