DEVICE AND METHOD FOR EXAMINING DOCUMENTS OF VALUE AND/OR TRANSPORTING DOCUMENTS OF VALUE BY MEANS OF ULTRASOUND

摘要

Described is a device for examining value documents and/or the transport of value documents which are transported along a specified transport path in a specified transport direction, by means of ultrasound with ultrasound transmitters disposed offset in a direction transverse to the transport direction for emitting, upon transmit signals, ultrasound on the transport path and ultrasound receivers disposed offset in a direction transverse to the transport direction for receiving ultrasound which is generated by means of the ultrasound transmitters, and for emitting receive signals, the ultrasound transmitters and/or ultrasound receivers respectively having at least one capacitive, micromechanical ultrasonic transducer.