METHOD FOR DETECTING CHECKED OBJECT NEEDING TO CONFIRM TRUTHFULNESS, SEALING MACHINE HAVING DETECTION FUNCTION AND CHECKED OBJECT NEEDING TO CONFIRM TRUTHFULNESS

摘要

PROBLEM TO BE SOLVED: To provide a method which has high detection performance, unnecessitates a complicated mechanism and detects a train ticket, etc., that is normally produced, its tool and paper that is used for it. ;SOLUTION: A train ticket, etc., contains conductive fiber and is provided with an electromagnetic wave sensor that detects the existence of the conductive fiber inside a stamp device for punching or checking which seals entrance date and time and place, etc. When the train ticket, etc., is irradiated with an electromagnetic wave at the time of punching and inspecting a train ticket, etc., in a car, the intensity of the reflected wave or transmitted wave becomes different according to the existence of conductive fiber, etc. Using this, when the conductive fiber is detected, a light emitting diode is turned on and notifies that it is a normal sheet of train tickets, etc.;COPYRIGHT: (C)1998,JPO