Security element in the form of a thread or strip to be embedded

Details Security element in the form of a thread or strip to be embedded Security element in the form of a thread or strip to be embedded

1996-05-14

1999-03-02

Fridie, Jr., Willmon

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing electromagnetic radiation

B42D 1500

Patent

active

058760687

ABSTRACT:
A security element in the form of a thread or strip to be embedded in security documents such as bank notes, checks, bonds, identity cards, credit cards or the like, having characters, patterns, etc., that are readable by transmitted light to the naked eye and/or by machine. The security element consists of a transparent plastic film having an opaque coating extending over the element with recesses in the form of the characters and patterns to be introduced. The security element also contains, in areas congruent with the recesses, coloring and/or luminescent substances which cause the characters and/or patterns to differ from the security document and from the opaque coating by color contrast under suitable light conditions.

REFERENCES:
patent: 5388862 (1995-02-01), Edwards
patent: 5627663 (1997-05-01), Horan et al.

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