Abstract: A magnetic detecting device according to an embodiment includes: a magnetic sensor head in which a plurality of magnetic sensing elements including a first magnetic sensing element and a second magnetic sensing element are arranged; and an environmental magnetism corrector. The plurality of magnetic sensing elements is arranged in one line over a length that is greater than a width of a sheet, in a direction that is orthogonal to a movement direction of the sheet. The environmental magnetism corrector corrects a first output signal output by the first magnetic sensing element, based on a second output signal output by the second magnetic sensing element. The magnetic sensor head has a sheet passage area that faces a sheet that passes over the magnetic sensor head, the first magnetic sensing element is positioned inside the sheet passage area, and the second magnetic sensing element is positioned outside the sheet passage area.

Abstract: According to one embodiment, a magnetic sensor includes: a case disposed facing an object that is to be detected; a plurality of magnetic sensing portions accommodated inside the case; and a magnetic generator disposed inside the case, between the plurality of magnetic sensing portions and the object that is to be detected.

Abstract: A magnetic detecting device according to an embodiment includes: a magnetic sensor head in which a plurality of magnetic sensing elements including a first magnetic sensing element and a second magnetic sensing element are arranged; and an environmental magnetism corrector. The plurality of magnetic sensing elements is arranged in one line over a length that is greater than a width of a sheet, in a direction that is orthogonal to a movement direction of the sheet. The environmental magnetism corrector corrects a first output signal output by the first magnetic sensing element, based on a second output signal output by the second magnetic sensing element. The magnetic sensor head has a sheet passage area that faces a sheet that passes over the magnetic sensor head, the first magnetic sensing element is positioned inside the sheet passage area, and the second magnetic sensing element is positioned outside the sheet passage area.

Abstract: According to one embodiment, a magnetic sensor includes: a case disposed facing an object that is to be detected; a plurality of magnetic sensing portions accommodated inside the case; and a magnetic generator disposed inside the case, between the plurality of magnetic sensing portions and the object that is to be detected.

Abstract: According to one embodiment, an image reading apparatus includes an illumination unit to irradiate a sheet that is conveyed by a conveyance unit with visible light and infrared light, an imaging unit to receive visible light and infrared light reflected from the sheet and to capture a visible image and an infrared image, and a background member including an infrared light low reflective part that is positioned within an imaging range of the imaging unit so as to overlap at least a side edge portion of the sheet and that diffusely reflects visible light and reflects infrared light at a lower reflectance than the sheet.

Abstract: According to one embodiment, an image reading apparatus that reads an image of a sheet conveyed by a conveyance unit includes a first illumination unit to irradiate the sheet with visible light, a second illumination unit to irradiate the sheet with visible light and infrared light from an angle different from that of the first illumination unit, and an imaging unit to receive visible light and infrared light reflected from the sheet and to capture a visible image and an infrared image.

Abstract: An image reading device includes an illuminating means for illuminating a reading position through which a sheet conveyed by conveying means passes, optical reading means for reading reflected light of the sheet illuminated by the illuminating means when the sheet passes the reading position, a white reference plate disposed opposite to the optical reading means with the reading position sandwiched therebetween, and moving structure means for moving a placement position of the illuminating means based on a placement position of the white reference plate, and storage means is included for storing information in a searchable manner.

Abstract: According to one embodiment, a sheet discriminating device includes a first conveying structure and a second conveying structure that are arranged at a predetermined distance from each other in a conveying direction of a sheet and that are configured to convey the sheet, and an information detecting means that is provided between the first conveying structure and the second conveying structure such that a detection range thereof is not blocked, and that is configured to detect information from the sheet.

Abstract: According to one embodiment, there is provided a fluorescence and afterglow detection device to detect fluorescence and afterglow on a sheet printed with fluorescent ink and phosphorescent ink while the sheet is being conveyed.

Abstract: According to one embodiment, an image reading apparatus includes an illumination unit to irradiate a surface of a sheet with light from an oblique direction at a predetermined angle of incidence, a reading unit to receive light reflected from a reading range on the sheet and to acquire a sheet image, and a reflecting mirror that is disposed in a direction of an angle of emission that is equal to the angle of incidence, that has a specular surface that is parallel to the reading range, and that reflects light reflected from the sheet toward the reading range with the specular surface.

Abstract: According to one embodiment, an image reading apparatus that reads an image of a sheet conveyed by a conveyance unit includes a first illumination unit to irradiate the sheet with visible light, a second illumination unit to irradiate the sheet with visible light and infrared light from an angle different from that of the first illumination unit, and an imaging unit to receive visible light and infrared light reflected from the sheet and to capture a visible image and an infrared image.

Abstract: According to one embodiment, an image reading apparatus includes an illumination unit to irradiate a sheet that is conveyed by a conveyance unit with visible light and infrared light, an imaging unit to receive visible light and infrared light reflected from the sheet and to capture a visible image and an infrared image, and a background member including an infrared light low reflective part that is positioned within an imaging range of the imaging unit so as to overlap at least a side edge portion of the sheet and that diffusely reflects visible light and reflects infrared light at a lower reflectance than the sheet.

Abstract: Presented is a light detection device including a first detecting portion detecting fluorescence from a first detection position on a conveyor path, a second detecting portion detecting afterglow from a second detection position on the conveyor path, a lighting portion applying excitation light over a range including the first detection position but not the second detection position, a first reference member including fluorescent material emitting fluorescence and emitting reference light toward the first detecting portion, a second reference member emitting reference light toward the second detecting portion, the reference light not influencing a result of detection by the second detecting portion, and a correction controller correcting a detection result by the first detecting portion based on the reference light detected by the first detecting portion and correcting a detection result by the second detecting portion based on the reference light detected by the second detecting portion.

Abstract: An image reading device includes an illuminating means for illuminating a reading position through which a sheet conveyed by conveying means passes, optical reading means for reading reflected light of the sheet illuminated by the illuminating means when the sheet passes the reading position, a white reference plate disposed opposite to the optical reading means with the reading position sandwiched therebetween, and moving structure means for moving a placement position of the illuminating means based on a placement position of the white reference plate, and storage means is included for storing information in a searchable manner.

Abstract: According to one embodiment, a limpness detecting device includes a transmitting unit to irradiate an acoustic wave towards a conveyed sheet to excite a Lamb wave, a first receiving unit to detect a leaky wave of the Lamb wave emitted from a front surface of the sheet, a second receiving unit to detect a leaky wave of the Lamb wave emitted from a back surface of the sheet, a comparison data calculating unit to calculate comparison data based on the signal detected by the first receiving unit and the signal detected by the second receiving unit, and an intactness judgment unit to compare the comparison data calculated by the comparison data calculating unit with a preset standard value and judge whether the sheet is an intact bill or not, based on a result of the comparison.

Abstract: An optical detection apparatus includes a detector configured to detect image data in a predetermined reading area on a conveying path to convey the sheet, a first illuminator configured to intermittently emit an excitation light to a first illumination area including the reading area of the detector, a second illuminator configured to continuously emit an excitation light to a second illumination area which is continued with the first illumination area on the upstream of the first illumination area on the conveying path and which does not include the reading area of the detector, and a control unit configured to control the detector to detect image data of the sheet according to the emitting operation of the first illuminator.

Abstract: A stiffness detector includes a bending portion configured to bend a paper sheet to be carried. The stiffness detector transmits acoustic waves to an incidence point on an inner surface of the paper sheet which is bent by the bending portion and is carried, thereby exciting Lamb waves. The stiffness detector receives leaky waves of the Lamb waves emitted from a detection point on the inner surface of the paper sheet. The stiffness detector specifies a maximum crest value based on the received signals, and judges whether the paper sheet is an unimpaired sheet based on the specified maximum crest value.

Abstract: An image reading apparatus, in which sheets being transported are illuminated by an illuminating unit, one after another, and a sensor having an imaging elements arranged in a line photographs the sheets, one after another. A white-reference part is provided in a part of the photographing region of the sensor. A black-reference part guides the light reflected by the illuminating unit to the sensor when a sheet lies in the photographing region of the sensor, and to restrict application of the light reflected by the illuminating unit to the sensor when no sheets lie in the photographing region of the sensor.

Abstract: A stiffness detector transmits acoustic waves to a paper sheet at a predetermined angle to excite Lamb waves. The stiffness detector receives leaky waves of the Lamb waves propagated through the paper sheet at different angles with respect to the paper sheet by a plurality of reception sensors. The stiffness detector is configured to specify a maximum leak angle at which a leak amount of the acoustic waves from the paper sheet becomes maximum based on outputs from the plurality of reception sensors in the reception module and to judge a degree of fatigue of the paper sheet based on the specified maximum leak angle.

Abstract: According to one embodiment, an ultrasonic detecting device includes a transmitter arranged at a predetermined angle with respect to a conveying plane on which a sheet is conveyed, the transmitter emitting ultrasonic waves towards the conveying plane; a receiver provided with a plurality of channels for detecting the ultrasonic waves, the receiver detecting the ultrasonic waves incident on the channels; and a dividing member to shield the receiver from diffraction waves of the ultrasonic waves emitted from the transmitter, the diffraction waves being diffracted at an edge of the sheet that delimits the sheet in a direction perpendicular to a conveying direction of the sheet.