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AssigneeVantico Inc.
InventorsDianne Beth Shirley, Ian Malcolm Shirley, Ajay Haridas Popat, Martin Russell Edwards, Kevin Thomas McAloon, Herbert Benson Scher
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A process is provided for producing a polymeric layer having a desired image thereon or a three dimensional article comprising a number of such layers in which a layer of a liquid photocurable composition which comprises photo colorable particles is cured by light and selected areas thereof are irradiated with light of a different dose, thereby forming the desired image which composition comprises particles dispersed in it which are micro-capsules containing a photosensitive color changing composition within a barrier layer which is substantially impermeable to the components of the color changing composition or are solid particles comprising an immobilized photosensitive color changing composition. The process permits the use of the same initiating mechanism to cure the resin and to change the color of the particles.
A process for producing a polymeric layer having a desired image thereon or a three dimensional article comprising a number of such layers, which process comprises curing by light at least one layer of a liquid photocurable composition, which composition comprises a photocurable resin, a first photo initiator, and photo colourable particles dispersed in the composition, and either simultaneously or subsequently irradiating selected areas of said at least one layer with light of a different dose, thereby initiating the photo colourable particles to form the desired image, wherein said photo colourable particles are
Dependencies are inferred from the claim text.