Method of producing a transparent polychromatic printed iridescent image
AssigneeFasver
InventorsFrançois TRANTOUL, Eric PHILIPPE, Laurence BES
Life of this patent
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Abstract
A method of producing a transparent polychromatic printed iridescent image (8) of any kind in which at least two colors change simultaneously when there is a change in the viewing angle of the image under illumination by at least one visible light source.
Claims18
A method for marking, in which at least one transparent image that has at least one first pattern comprising at least one interferential pigment is printed, with at least one first pattern being formed by a first initial color at a first viewing angle under lighting by at least one visible light source, with the first initial color changing into a first final color at a second viewing angle under lighting by at least one visible light source, distinct from the first viewing angle, the method comprising:
- printing at least one printing composition that comprises a powder that comprises at least one interferential pigment is used,
- wherein said powder is dispersed with a proportion by mass in a liquid printing medium, and
- wherein each interferential pigment and said proportion by mass are selected in such a way that each image is transparent, with the proportion by mass of interferential pigment in the printing composition being selected so that the marking makes it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.
A marking, with at least one transparent printed image that has at least one first pattern comprising:
- at least one interferential pigment of a first initial color at a first viewing angle,
- wherein the first initial color changes into a first final color at a second viewing angle that is distinct from the first viewing angle, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.
Dependencies are inferred from the claim text.