| 摘要 |
PURPOSE:To prevent the generation of an erroneous discrimination due to the fluctuation of the paper money carrier speed in the device providing an optical image of the paper money using a one-dimensional image sensor laying an carrier path carrying the paper money and examining the genuineness of the picture. CONSTITUTION:A one-dimensional image sensor 4 lays a carrier path 2 of the image sensor 4 while keeping an acute angle a against a carrier vertical direction Q vertical to a paper money carrier direction P and taking this angle alphaas alpha>=beta against an acute angle beta made by a diagonal line 3b of paper money 3 and the carrier vertical direction Q. Further, an optical image Xa is formed by storing the value of each output signal of the element sensor S every time the element sensor S comprising the image sensor 4 starts the detection of the paper money 3 or stops detecting the paper money 3. |
