The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 2007
Filed:
Aug. 29, 2001
Toru Matsui, Osaka, JP;
Benedikt Ahlers, Berlin, DE;
Anett Bailleu, Berlin, DE;
Roland Gutmann, Falkensee, DE;
Frank Kappe, Rheda-Wiedenbruck, DE;
Toru Matsui, Osaka, JP;
Benedikt Ahlers, Berlin, DE;
Anett Bailleu, Berlin, DE;
Roland Gutmann, Falkensee, DE;
Frank Kappe, Rheda-Wiedenbruck, DE;
Bundesdruckerei GmbH, Berlin, DE;
Abstract
An apparatus configured to discriminate the genuineness of a certified paper by exposing the paper to a light source and transporting the paper through an environment of an alternating-current electromagnetic field. Light detectors detect the light reflected from the paper and the light emitted by a fluorescent ink on the paper and output a waveform corresponding to the intensity of the detected light, reflected light, and the detected emitted light as the paper is scanned. The resulting waveforms are used to discriminate the genuineness of the paper. The fluorescent light and reflected light can be optically split and directed to separate detecting devices. Furthermore, the alternating-current electromagnetic field can be controlled by a voltage controller and configured to be driven only when the sensor detects light from the fluorescent ink.