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:
May. 29, 2007
Filed:
May. 08, 2002
Norbert Lutz, Rückersdorf, DE;
Gerhard Zinner, Pyrbaum, DE;
Matthias Schumacher, Borchen, DE;
Ulrich Knaack, Paderborn, DE;
Dirk Fischer, Paderborn, DE;
Norbert Lutz, Rückersdorf, DE;
Gerhard Zinner, Pyrbaum, DE;
Matthias Schumacher, Borchen, DE;
Ulrich Knaack, Paderborn, DE;
Dirk Fischer, Paderborn, DE;
ORGA Systems GmbH, Paderborn, DE;
Abstract
The present invention relates to a process for increasing the level of safeguard in respect of forgery of paper documents. For that purpose, applied to the paper document is a transfer film or laminating film having a laser-sensitive layer. This multi-layer body is then treated with laser radiation. In that case, a laser-induced marking is produced in the laser-sensitive layer, for example, by laser-induced bleaching, laser-induced color change or laser-induced blackening. Respective individualization of the document can be effected by way of that laser-induced marking.