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

Claim 2:
3. The paper sheet processing apparatus according to claim 2, wherein when a rise time required for a light intensity of the fluorescence emission of the fluorescence reference member to rise up to a point where it exceeds a threshold value of the fluorescence intensity that can determine a boundary of the paper sheet is Tx, an irradiation angle of the excitation light is θ, a pixel accuracy required for boundary detection is P “pix”, an image resolution is R “mm/pix”, a distance between the paper sheet and the fluorescence reference member is d2, and a conveying speed of the paper sheet is V,
the fluorescence reference member includes a fluorescent material that satisfies the following relationship:

Tx=(ds×tan θ+P×R)/(V×103)[sec].