Lithophane-like article and method of manufacture
OwnerJohn Dufortinventor
Life of this patent
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Abstract
An article and a method of forming an article, for example formed of plastics, confectionary product, soap, wax or liquid, by determining the intensity of different points of an original image, and forming the article with a thickness at each point of the article related to the intensity of the corresponding point of the original image. Preferable, the article is formed by forming a mould, and moulding the article.
Claims16
A method of forming a plastics article through which an image is observable when the article is illuminated with light from behind due to variations in the thickness of the material of the article corresponding to variations in intensity of the image to be observed, the method comprising the steps of:
- determining the relative intensity at different points of an image;
- converting the determined relative intensity into data for controlling a mould forming machine;
- automatically forming a mould in which the relief on the mould surface corresponds to the determined relative intensity;
- and
- moulding the article in the mould, the article being moulded from a translucent plastics material including a pigmentation.
Dependencies are inferred from the claim text.