Patent ID: 7201312

Claim:
A device to invalidate banknotes in a unit equipped for storage thereof, said equipped unit including banknotes ( 4 ) forming at least one orderly group, and said device comprising: at least one ignition unit ( 15 ) placed in said equipped unit ( 3 ) in a position adjacent to said banknotes ( 4 ) and suitable to generate a flame, conveying means ( 18 ) of said flame comprising slotted channels ( 18 a ) produced between said banknotes ( 4 ) and said ignition unit ( 15 ), said ignition unit ( 15 ) and said conveying means ( 18 ) producing on at least one of said banknotes ( 4 ) a plurality of localized burns ( 4 a ) adjacent to one another and substantially defining an identifiable coding pattern, and activation means ( 16 ) of said ignition unit ( 15 ) sensitive to alarm situations being provided.