Being the optical detection device which detects with fluorescence and the afterglow from the paper leaf central processing unit

摘要

PROBLEM TO BE SOLVED: To provide an optical detection apparatus simply configured to detect a plurality of lights having different characteristics, and a sheet processing apparatus including the optical detection apparatus.;SOLUTION: The optical detection apparatus 135 for detecting fluorescence and afterglow from a paper sheet on which a phosphor and phosphorescent substance are applied, includes: a detecting part 5 configured to detect image data by receiving light from a predetermined reading range on a conveying path to convey the sheet; a first illumination part 3 configured to intermittently emit an excitation light to a first illumination range including the reading position of the detecting part; a second illumination part 4 configured to continuously emit an excitation light to a second illumination range which is continued with the first illumination range on the upstream of the detecting part on the conveying path and which does not include the reading position of the detecting part; and a control part 6 configured to control the detecting part to detect image data according to the operation of the first illumination part.;COPYRIGHT: (C)2010,JPO&INPIT