Paper sheet handling device
The present invention is provided with: a heat source unit; a heat detection unit that detects the intensity of light of a prescribed wavelength obtained from paper sheets in which heat provided from the heat source unit is stored; and a control unit that detects, on the basis of the intensity of the light of the prescribed wavelength obtained from the paper sheets, a repaired paper sheet which has been repaired with a repair member.
1. A paper sheet handling device, comprising:
a heat source unit;
a heat detection unit that detects an intensity of a prescribed wavelength light obtained from a paper sheet which stores heat supplied from the heat source unit; and
a control unit that determines whether the paper sheet is a repair paper sheet repaired with a repairing member or a folded paper sheet, based on the intensity of the prescribed wavelength light obtained from the paper sheet.
2. The paper sheet handling device according to claim 1 ,
wherein the control unit determines that the paper sheet is the folded paper sheet when the intensity of the prescribed wavelength light falls within a first range, and determines that the paper sheet is the repair paper sheet when the intensity of the prescribed wavelength light falls within a second range outside the first range.
3. The paper sheet handling device according to claim 1 , further comprising a thickness detection unit that detects a thickness of the paper sheet,
wherein the control unit performs determination based on the intensity of the prescribed wavelength light when it is determined whether the paper sheet is the repair paper sheet or the folded paper sheet, based on the detection result by the thickness detection unit.
4. The paper sheet handling device according to claim 2 ,
wherein the heat detection unit includes a plurality of elements that detect the intensity of the prescribed wavelength light, and
the control unit determines that the intensity of the prescribed wavelength light depends on an environmental factor when the intensity of the prescribed wavelength light within the second range is obtained from the plurality of elements.
5. The paper sheet handling device according to claim 2 ,
wherein the control unit determines that the intensity of the prescribed wavelength light depends on a sensitivity unevenness of the elements or a heat storage unevenness of the paper sheet when the intensity of the prescribed wavelength light detected by some of the plurality of elements falls within the second range, and a difference from a boundary value of the first range is not equal to or more than a constant value.
6. The paper sheet handling device according to claim 1 ,
wherein the control unit transports the bill to a collection box for collecting the paper sheet and collects the bill when it is determined that the paper sheet is the repair paper sheet, and transports the bill to a storage box for recycling the paper sheet and stores the bill when it is determined that the paper sheet is the folded bill.