DEVICE FOR CHECKING VALIDITY OF BANK NOTES Russian patent published in 1998 - IPC

FIELD: bank equipment. SUBSTANCE: device operations are based on capacitance method for detection of faked bank notes. Level of dielectric permeability of paper of tested bank note is preliminary checked against preset tolerance range for values of dielectric permeability. In addition method takes into account dielectric permeability of air in order to exclude influence of environment. Device provides optimal shape of measuring electrode of capacitance detector. EFFECT: increased reliability of detection, simplified operations in dynamic mode which involves simultaneous counting and checking of bank notes. 1 dwg