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.

A paper-sheet-thickness detecting sensor of the present invention includes: an oscillator that outputs high-frequency signals with frequencies corresponding to positions in a horizontal direction that is orthogonal to a direction in which a paper sheet is transported; a signal electrode to which the high-frequency signals output by the oscillator are applied; a plurality of detection electrodes that face the signal electrode across a transportation path for the paper sheet and that individually detect detection signals that correspond to the positions; a plurality of resonance circuits that each have one end connected to one end of each of the plurality of detection electrodes and that have resonance frequencies equal to the frequencies allocated to the positions; and a broadband amplifier to which another end of each of the plurality of resonance circuits is connected and that outputs outputs of the plurality of resonance circuits as one piece of sensor output information.

A paper-sheet-thickness detecting sensor of the present invention includes: an oscillator that outputs high-frequency signals with frequencies corresponding to positions in a horizontal direction that is orthogonal to a direction in which a paper sheet is transported; a signal electrode to which the high-frequency signals output by the oscillator are applied; a plurality of detection electrodes that face the signal electrode across a transportation path for the paper sheet and that individually detect detection signals that correspond to the positions; a plurality of resonance circuits that each have one end connected to one end of each of the plurality of detection electrodes and that have resonance frequencies equal to the frequencies allocated to the positions; and a broadband amplifier to which another end of each of the plurality of resonance circuits is connected and that outputs outputs of the plurality of resonance circuits as one piece of sensor output information.

There is described a method for examining a value document while employing a digital image of the value document which comprises pixels, wherein the image is examined for the presence of at least one irregularity relating to a pre-specified property of the value document, when such an irregularity is found an examination region representing the irregularity is fixed in dependence on the size and/or position and/or form of the irregularity in the image, and for checking the irregularity only a part of those pixels of the digital image that correspond to the examination region is employed.

There is described a method for examining a value document while employing a digital image of the value document which comprises pixels, wherein the image is examined for the presence of at least one irregularity relating to a pre-specified property of the value document, when such an irregularity is found an examination region representing the irregularity is fixed in dependence on the size and/or position and/or form of the irregularity in the image, and for checking the irregularity only a part of those pixels of the digital image that correspond to the examination region is employed.

Described is a method for providing measurement data for value documents to a specified purpose of use employing a value-document processing device which has a transport device for transporting the value documents, and a sensor device for capturing at least one property of value documents transported in the value-document processing apparatus by means of the transport device and forming measurement data describing the captured property, in which value documents are transported to the sensor device by means of the transport device and measurement data for these are respectively captured by means of the sensor device, it is tested whether the measurement data for the value documents meet a suitability criterion specified for the purpose of use, and measurement data for respectively one of the value documents either are permanently stored or discarded in dependence on the result of the testing.

Described is a method for providing measurement data for value documents to a specified purpose of use employing a value-document processing device which has a transport device for transporting the value documents, and a sensor device for capturing at least one property of value documents transported in the value-document processing apparatus by means of the transport device and forming measurement data describing the captured property, in which value documents are transported to the sensor device by means of the transport device and measurement data for these are respectively captured by means of the sensor device, it is tested whether the measurement data for the value documents meet a suitability criterion specified for the purpose of use, and measurement data for respectively one of the value documents either are permanently stored or discarded in dependence on the result of the testing.

The present disclosure can provide a paper sheet recognition apparatus which can generate a subtracted reflective light image without increasing detection time. The operations of sensors (20, 30) are controlled in a plurality of phases. The phases include a phase (reflected infrared light 1) in which a light emission unit (22a) emits light, a light emission unit (22b) emits no light, and an optical sensor (21) detects reflective light, and a phase (reflected infrared light 2) in which the light emission unit (22a) emits no light, the light emission unit (22b) emits light, and the optical sensor (21) detects reflective light. In at least one of these phases, a light emission unit (24) emits light, and an optical sensor (31) detects transmissive light.

The present disclosure can provide a paper sheet recognition apparatus which can generate a subtracted reflective light image without increasing detection time. The operations of sensors (20, 30) are controlled in a plurality of phases. The phases include a phase (reflected infrared light 1) in which a light emission unit (22a) emits light, a light emission unit (22b) emits no light, and an optical sensor (21) detects reflective light, and a phase (reflected infrared light 2) in which the light emission unit (22a) emits no light, the light emission unit (22b) emits light, and the optical sensor (21) detects reflective light. In at least one of these phases, a light emission unit (24) emits light, and an optical sensor (31) detects transmissive light.

A method for examining a value document includes emitting ultrasonic pulses onto several locations on the value document. An echo pulse arises by reflection of at least a portion of a respective ultrasonic pulse at the value document. The echo pulses are received while forming echo values, and from the echo values at least a characteristic value is established as to the wrinkledness of the value document. As apparatus is provided for carrying out the method.