Patent ID: 11935351
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A paper sheet processing apparatus comprising:
a conveyance mechanism which conveys a paper sheet with fluorescent ink print information along a conveyance path;
a fluorescence reference member which includes a fluorescent material which exhibits fluorescence emission at an excitation light wavelength common to the fluorescent ink print information, and is arranged to oppose to the conveyance path including a passing area of the paper sheet;
a light source device which is arranged on an upstream side of the fluorescence reference member in a conveying direction of the paper sheet and irradiates the fluorescence reference member with excitation light; and
an imaging device which images the fluorescence emission of the fluorescence reference member and acquires an image including a contour of the paper sheet passing over the fluorescence reference member and an image of the fluorescent ink print information of the paper sheet,
wherein the fluorescence reference member is configured to include a fluorescent material in which a fluorescence emission intensity is excited to about 30 to 50% of a stable state within a time for the imaging device to scan one line.