Verification device for currency containing an embedded security thread

Apparatus for authenticating and denominating currency paper comprising:

• a pair of first light emitters arranged along one side of a paper containing an embedded security thread providing an optical pattern corresponding to indicia contained on said security threads one of said first light emitters being focussed on said security thread to provide a clear image of said indicia and the other of said first light emitters being unfocussed on said security thread to provide a blurred image of said indicia;
• a light detector arranged along an opposite side of said paper receiving said clear and blurred images;
• and
• logic circuit means connecting with said first light detector combining said clear and blurred images to produce a resultant image of said indicia.

A method of denominating commercial paper and currency comprising the steps of:

• providing a paper containing an embedded security thread having indicia of commercial value;
• arranging a light emitter on one side of said paper providing an optical pattern corresponding to said indicia
• arranging a light detector along an opposite side of said paper receiving said optical pattern;
• and
• connecting logic means with said first light detector for comparing said optical pattern to stored values contained therein to thereby determine said commercial value.

A method of denominating commercial paper and currency comprising the steps of:

• providing a paper containing an embedded security thread having indicia of commercial value;
• arranging a pair of light emitters on one side of said paper, one of said light emitters providing a first clear image of said security thread and the other of said light emitters providing a blurred image thereof;
• arranging a pair of light detectors on an opposite side of said paper in optical communication with said light emitters;
• connecting said light detectors with a logic circuit containing stored data indicative of said security thread;
• combining said clear and blurred images to form a resultant image;
• and
• comparing said resultant image with said stored data for determining said commercial value.

Apparatus for authenticating and denominating currency paper comprising;

• a first light emitter arranged along one side of a paper containing an embedded security thread providing an optical pattern corresponding to indicia contained on said security thread;
• a first light detector arranged along said one side of said paper receiving said optical pattern;
• and
• logic circuit means connecting with said first light detector comparing said optical pattern to stored values contained therein.

A method of denominating commercial paper and currency comprising the steps of:

• providing a paper containing an embedded security thread having indicia of commercial value;
• arranging a light emitter on one side of said paper providing an optical pattern corresponding to said indicia
• arranging a light detector along said one side of said paper receiving said optical pattern;
• and
• connecting logic means with said first light detector for comparing said optical pattern to stored values contained therein to thereby determine said commercial value.