Patent ID: 8077961

Claim:
A method for recognizing forged bank notes with a bank note processing machine, the method comprising the steps of: processing the bank notes with the bank note processing machine; checking the bank notes with comparative data stored by the bank note processing machine and derived from authentic bank notes and known forgeries, wherein the comparative data is produced by capturing features selected from the group consisting of printing inks with special optical and/or magnetic properties, metallic or magnetic security threads, paper used for the bank notes being free of brighteners, information contained in an electrical circuit, bank note size, printing pattern, colors, optical appearance, and combinations thereof; and using additional comparative data for new types of forgeries, which are not recognized based on the comparative data derived from authentic bank notes and known forgeries; wherein the bank notes to be checked are compared with both the comparative data and the additional comparative data for new types of forgeries so as to determine whether a forged bank note is present.