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US 2016/0107473 A1Published application
System For and Method of Producing a Security Mark on a Micro-Porous Structure
OwnerDavid Benderlyinventor
Life of this patent
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Abstract
A security mark is produced on a micro-porous, synthetic paper, structure by changing light transmission properties of light pathways through the structure. The security mark is visible when the structure is illuminated.
Claims7
1-16. (canceled)
A method of producing a security mark on a micro-porous structure to be secured, comprising:
- forming selected portions of the micro-porous structure in a pattern corresponding to the security mark to be produced by scanning radiant energy relative to the micro-porous structure in the pattern;
- and
- changing light transmission characteristics of the selected portions to transmit light through the selected portions at different light levels to render the security mark visible when the micro-porous structure is illuminated, by distorting pores of the micro-porous structure at the selected portions to different sizes and shapes corresponding to the different light levels.
A system for producing a security mark on a micro-porous structure to be secured, comprising:
- a controller for forming selected portions of the micro-porous structure in a pattern corresponding to the security mark to be produced;
- and
- a radiant energy source for changing light transmission characteristics of the selected portions to transmit light through the selected portions at different light levels to render the security mark visible when the micro-porous structure is illuminated, the radiant energy source emitting radiant energy operative for distorting pores of the micro-porous structure at the selected portions to different sizes and shapes corresponding to the different light levels;
- and
- wherein the controller is operative for scanning the radiant energy relative to the micro-porous structure in the pattern.
2 more elements
A secured document, comprising:
- a micro-porous structure configured as a polymeric sheet having opposite major surfaces and containing a multitude of pores that constitutes at least 50 percent by volume of the micro-porous structure,
- selected portions of the micro-porous structure being arranged in a pattern corresponding to a security mark to secure the document,
- the selected portions having changed light transmission characteristics to transmit light through the selected portions at different light levels to render the security mark visible when the micro-porous structure is illuminated from at least one of the major surfaces, and
- the pores at the selected portions having different sizes and shapes.
1 more element
Dependencies are inferred from the claim text.