Invention Grant
US09087424B2 Method and device for checking the degree of soiling of bank notes 有权
检查钞票污染程度的方法和装置

Method and device for checking the degree of soiling of bank notes
Abstract:
The invention relates to a method and device for checking the degree of soiling of bank notes. To this end, the bank notes are conveyed along a transport path and illuminated by at least one light source with visible light of the blue spectral range. The light reflected and/or emitted by the bank notes, and/or the light having penetrated the bank notes due to transmission, is detected by means of at least one sensor and evaluated.
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