Back to results
US 7,255,909 B2Granted
Security laminate
Assignee3M Innovative Properties Company
InventorsGraeme R. Mann, Brian W. Dunne, Paul D. Graham, Thomas Junck, Mark F. Schulz
Life of this patent
Estimating the term…
Abstract
In one aspect, the invention provides a security laminate comprising a retroreflective layer comprising a plurality of retroreflective microbeads partially embedded in and protruding from a beadbond layer and having image receptive material disposed around the protruding microspheres. In another embodiment, the security laminate further comprises indicia patterns viewable in retroreflective light. In another embodiment, the security laminate is imaged on the image receptive material.
Claims15
A transparent or translucent security laminate comprising:
- a retroreflective layer comprising:
- a plurality of retroreflective microbeads partially embedded in a beadbond, having a reflector layer embedded in the beadbond,
- having image receptive material disposed between microbeads, where the microbeads protrude from the image receptive material in a manner such that the microbeads remain retroreflective, and
- having an overt image on the image receptive material, wherein the overt image comprises an aqueous ink.
1 more element
Dependencies are inferred from the claim text.