Back to results
US 6,210,777 B1Granted
Security document having a transparent or translucent support and containing interference pigments
AssigneeAgfa-Gevaert
InventorsLeo Vermeulen, Daniel De Baets
Life of this patent
Estimating the term…
Abstract
A security document which contains at least one layer and a transparent or translucent support and at least one image or pattern serving for identification purposes, characterized in that the document contains at least one light interference pigment distributed uniformly or patternwise in or on at least one layer of the document and/or contains the pigment in the support.
Claims30
A security document comprising:
- a transparent or translucent support with a visible light-blocking capacity less than 80%, said support having a first side and a second side opposite said first side;
- an image or pattern for identification purposes, at said first side or at said second side of said support;
- a first layer at said first side of said support;
- a first light interference pigment distributed uniformly or patternwise in or on said first layer;
- wherein said document, by presence of said first light interference pigment, has at least in certain areas a first color when viewed with light transmitted through the document and a second color, said second color being different from said first color, when viewed with light reflected by the document.
2 more elements
A security document comprising:
- a transparent or translucent support TS with a visible light-blocking capacity less than 80%, said support having a first side and a second side opposite said first side;
- an image or pattern for identification purposes, at said first side or at said second side of said support;
- a first layer at said first side of said support;
- a second layer at said second side of said support;
- a light interference pigment A distributed uniformly or patternwise in said first layer;
- a light interference pigment B distributed patternwise in said second layer;
- a second pattern containing common light-reflecting pigments R on top of said first layer;
- a third pattern containing said common light-reflecting pigments R underneath said second layer;
- wherein said document, by presence of said light interference pigment A, has at least in certain areas a first color when viewed with light transmitted through the document and a second color, said second color being, different from said first color, when viewed with light reflected by the document.
6 more elements
A security document comprising:
- a transparent or translucent support TS with a visible light-blocking capacity less than 80%, said support having a first side and a second side opposite said first side;
- an image or pattern for identification purposes, at said first side or at said second side of said support;
- a first layer at said first side of said support;
- a second layer at said second side of said support;
- a light interference pigment A distributed patternwise in said first layer;
- a light interference pigment B distributed uniformly or patternwise in said second layer;
- a second pattern containing common light reflecting pigments R1 underneath said first layer having a color complementary to a color of said light interference pigment A when seen with reflected light;
- a third pattern underneath said first layer containing said common light reflecting pigments R1 mixed with colored fluorescent or phosphorescent pigments or dyes RF;
- a plurality of fourth patterns underneath said first layer containing solely said pigments or dyes RF;
- a fifth pattern underneath said second layer containing metallic pigments M;
- a sixth pattern underneath said second layer containing light reflecting pigments R2 having a color complementary to a color of said light interference Pigment B when seen with reflected light;
- a seventh pattern underneath said second layer containing metallic pigments M mixed with said common light reflecting pigments R2;
- wherein said document, by presence of said light interference pigment A, has at least in certain areas a first color when viewed with light transmitted through the document and a second color, said second color being different from said first color, when viewed with light reflected by the document.
10 more elements
A security document comprising:
- a transparent or translucent support with a visible light-blocking capacity less than 80%, said support having a first side and a second side opposite said first side;
- an image or pattern for identification purposes, at said first side or at said second side of said support;
- a light interference pigment distributed uniformly or patternwise in said support;
- wherein said document, by presence of said light interference pigment, has at least in certain areas a first color when viewed with light transmitted through the document and a second color, said second color being different from said first color, when viewed with light reflected by the document.
1 more element
Dependencies are inferred from the claim text.