Secure property document and method of manufacture
First Claim
Patent Images
1. A fraud resistant document comprising:
- a main body,a plurality of radiant energy reflectors overlying said main body in a data area for reflecting incident radiant energy of predetermined characterisitcs.a magnetic recording member overlying said radiant energy reflectors, said member being substantially transparent to said radiant energy and generally opaque to normal visible light whereby said reflectors are at least partially concealed against detection by the naked eye, anda layer of material on the bottom of said magnetic recording member having a lower reflector-receiving surface interfacing with said reflectors, said layer of material being substantially transparent to said radiant energy and said surface having known general microtopographical characteristics,said reflectors comprising thin elements particle deposited onto said reflector-receiving surface, each element having a reflective surface interfacing with said reflector-receiving surface and having substantially the same microtopographical characteristics as said reflector-receiving surface.
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Abstract
A secure property document is provided which includes an optical data set defined by radiant energy modifying elements underlying a magnetic data member for reflecting infrared radiation therethrough. Preferably, the infrared reflectors are comprised of a plurality of thin metallic elements vapor deposited onto a magnetic tape during manufacture prior to hot stamping.
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Citations
15 Claims
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1. A fraud resistant document comprising:
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a main body, a plurality of radiant energy reflectors overlying said main body in a data area for reflecting incident radiant energy of predetermined characterisitcs. a magnetic recording member overlying said radiant energy reflectors, said member being substantially transparent to said radiant energy and generally opaque to normal visible light whereby said reflectors are at least partially concealed against detection by the naked eye, and a layer of material on the bottom of said magnetic recording member having a lower reflector-receiving surface interfacing with said reflectors, said layer of material being substantially transparent to said radiant energy and said surface having known general microtopographical characteristics, said reflectors comprising thin elements particle deposited onto said reflector-receiving surface, each element having a reflective surface interfacing with said reflector-receiving surface and having substantially the same microtopographical characteristics as said reflector-receiving surface. - View Dependent Claims (2, 3, 4)
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5. A method of manufacturing a fraud resistant document comprising the steps of:
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providing a document body member and a magnetic recording member substantially transparent to radiant energy of predetermined characteristics and generally opaque to visible light, providing a reflector-receiving surface on said magnetic recording member, said surface being of known general microtopographical characteristics, depositing particles of reflector material onto said receiving surface to build up a thin layer thereof at various locations on said receiving surface to provide a plurality of radiant energy reflector elements each having a reflector surface with microtopographical characteristics substantially the same as those of said receiving surface, and securing said magnetic recording member to said document body member with said radiant energy reflector elements disposed therebetween. - View Dependent Claims (6, 7, 8)
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9. A method of manufacturing a fraud resistant document comprising the steps of:
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providing a document body member and a magnetic recording member substantially transparent to radiant energy of predetermined characteristics and generally opaque to visible light, providing a reflector-receiving surface on said document body member, said surface being of known general microtopographical characteristics, depositing particles of reflector material onto said receiving surface to build up a thin layer thereof at various locations on said receiving surface to provide a plurality of radiant energy reflector elements each having a reflector surface with microtopographical characteristics substantially the same as those of said receiving surface, and securing said magnetic recording member to said document body member with said radiant energy reflector elements disposed therebetween. - View Dependent Claims (10, 11, 12)
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13. A method of manufacturing a security tape having a magnetic recording medium and reflector elements, whereby the microtopography of the reflector elements is controlled to provide desired reflective characteristics, said method comprising:
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providing a magnetic recording member comprising an elongated web having a magnetic recording medium disposed on one side thereof which is substantially transparent to radiant energy of predetermined characteristics and generally opaque to normal visible light, coating at least a portion of the exposed side of said magnetic recording medium with a layer of material, the exposed side of which defines a reflector-receiving surface of known general microtopographical characteristics, and depositing particles of reflector material onto said receiving surface to build up a thin layer thereof at various locations on said receiving surface and with microtopographical characteristics substantially the same as those of said receiving surface, said elements being such that incident radiant energy of said predetermined characteristics is reflected by each said reflective surface, said layer of material providing an adhesive bond between said reflector material and said magnetic medium an defining the desired reflective characteristics of the reflective surfaces. - View Dependent Claims (14, 15)
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Specification