Articles employing a magnetic security feature
First Claim
1. An article for use with security documents that comprises a plastic substrate having at least one security feature located thereon, wherein said security feature is a machine detectable security feature comprising a layer of a soft magnetic metal, wherein said soft magnetic metal is an amorphous metal glass having a low magnetic coercivity of from about 50 to about 5000 amperes per meter, and wherein said layer of said soft magnetic metal has a thickness ranging from about 0.10 to 0.50 microns.
2 Assignments
0 Petitions
Accused Products
Abstract
Articles for use with security documents are disclosed which include planchettes and security threads that comprise a plastic substrate having at least one security feature employing soft magnetic metal located thereon. Preferred articles comprise at least two security features where a first security feature is made up of an optionally repeating pattern of soft magnetic metal adapted to generate a signal or a series of signals in an interrogation field applied by a detection system for remote detecting and optionally for remote reading or identifying the article. A second security feature is a public security feature that comprises magnetic and/or non-magnetic metal formed indicia. The first and second security features of this invention can be coextensive features.
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Citations
31 Claims
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1. An article for use with security documents that comprises a plastic substrate having at least one security feature located thereon, wherein said security feature is a machine detectable security feature comprising a layer of a soft magnetic metal, wherein said soft magnetic metal is an amorphous metal glass having a low magnetic coercivity of from about 50 to about 5000 amperes per meter, and wherein said layer of said soft magnetic metal has a thickness ranging from about 0.10 to 0.50 microns.
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2. An article for use with security documents that comprises a plastic substrate having at least one security feature located thereon, wherein said security feature is a machine detectable and optionally machine readable security feature comprising a layer of an optionally repeating pattern of soft magnetic metal, wherein said soft magnetic metal is an amorphous metal glass having a low magnetic coercivity of from about 50 to about 5000 amperes per meter, and wherein said layer of said soft magnetic metal has a thickness ranging from about 0.10 to 0.50 microns.
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3. An article for use with security documents that comprises a plastic substrate having at least two security features located thereon, wherein a first security feature is a machine detectable and optionally machine readable security feature comprising an optionally repeating pattern of soft magnetic metal, and wherein a second security feature comprises:
- magnetic or non-magnetic metal formed indicia;
or a combination of magnetic and non-magnetic metal formed indicia. - View Dependent Claims (4, 5, 6)
- magnetic or non-magnetic metal formed indicia;
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7. A security thread for use with security documents that comprises a plastic substrate having at least two security features located thereon, wherein a first security feature is a machine detectable and optionally machine readable security feature comprising an optionally repeating pattern of soft magnetic metal, and wherein a second security feature comprises:
- magnetic or non-magnetic metal formed indicia;
or a combination of magnetic and non-magnetic metal formed indicia. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- magnetic or non-magnetic metal formed indicia;
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26. A security paper having an article at least partially embedded therein or mounted thereon, wherein said article comprises a plastic substrate having at least one security feature located thereon, wherein said security feature is a machine detectable and optionally machine readable security feature comprising a layer of an optionally repeating pattern of soft magnetic metal, wherein said soft magnetic metal is an amorphous metal glass having a low magnetic coercivity of from about 50 to about 5000 amperes per meter, and wherein said layer of said soft magnetic metal has a thickness ranging from about 0.10 to 0.50 microns.
- 27. A security paper having an article at least partially embedded therein or mounted thereon, wherein said article comprises a plastic substrate having at least two security features located thereon, wherein a first security feature is a machine detectable and optionally machine readable security feature comprising an optionally repeating pattern of soft magnetic metal, and wherein a second security feature comprises magnetic and/or non-magnetic metal formed indicia.
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31. A security thread for use with security documents that comprises the following layers:
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a. a layer of a plastic substrate having a length; and b. a thin layer of a first and a second security feature located on said plastic substrate, wherein said first security feature is a machine detectable and optionally machine readable security feature that comprises an optionally repeating pattern of soft magnetic metal, wherein said second security feature comprises;
magnetic metal formed indicia and optionally non-magnetic metal formed indicia,wherein said optionally repeating pattern of said first security feature comprises;
at least one soft magnetic metal region and at least one partitioning region, optionally in alternating sequence across said length of said plastic substrate, andwherein said indicia of said second security feature form at least a part of said soft magnetic metal region(s) and optionally form at least a part of said partitioning region(s).
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Specification