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Process for forming a colored three-dimensional article

  • US 6,133,336 A
  • Filed: 08/30/1996
  • Issued: 10/17/2000
  • Est. Priority Date: 09/09/1995
  • Status: Expired due to Term
First Claim
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1. A process for forming a three-dimensional article having selectively coloured regions from a photocurable, photocolourable composition comprising the steps:

  • a) curing a layer of the composition using light thereby forming a polymeric layer;

    b) irradiating selected areas of the polymeric layer resulting from step a) or of a layer of the composition with a higher dose of light than used in step a) thereby forming selectively coloured areas;

    c) repeating steps a) and b) on a previously formed polymeric layer until the desired three-dimensional article having selectively coloured regions is formed;

    wherein the wavelength(s) of light used in each of steps a) and b) is or are the same.

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