Patent ID: 8313100

Claim:
A paper sheet processing apparatus comprising: a conveyance mechanism which is capable of driving a paper sheet to be conveyed along a traveling route; an authenticity judging part which determines an authenticity of the paper sheet being conveyed in the traveling route; a sensor which detects whether or not the paper sheet is present in the traveling route; and a controller which carries out a redetection process to detect whether or not the paper sheet is present in the traveling route by the sensor again after the conveyance mechanism is driven for a predetermined amount and stopped in a case of having not detected presence of the paper sheet upon previous detection of either presence or absence of the paper sheet by the sensor under a condition that driving of the conveyance mechanism of the traveling route is stopped after an authenticity determination by the authenticity judging part, wherein the controller controls the conveyance mechanism to convey the paper sheet in a returning direction.